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Table: sdss_dr8.galspecline
(The bold columns are indexed columns)
| Column Name | Description | Datatype |
|---|---|---|
| ariii7135_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| ariii7135_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| ariii7135_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| ariii7135_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| ariii7135_eqw_err | Error in the equivalent width described above | REAL |
| ariii7135_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| ariii7135_flux_err | Error in the flux | REAL |
| ariii7135_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| ariii7135_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| ariii7135_reqw_err | Error in the equivalent width described above | REAL |
| fiberid | Fiber number (1 - 640) | SMALLINT |
| h_alpha_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| h_alpha_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| h_alpha_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| h_alpha_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| h_alpha_eqw_err | Error in the equivalent width described above | REAL |
| h_alpha_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| h_alpha_flux_err | Error in the flux | REAL |
| h_alpha_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| h_alpha_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| h_alpha_reqw_err | Error in the equivalent width described above | REAL |
| h_beta_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| h_beta_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| h_beta_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| h_beta_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| h_beta_eqw_err | Error in the equivalent width described above | REAL |
| h_beta_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| h_beta_flux_err | Error in the flux | REAL |
| h_beta_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| h_beta_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| h_beta_reqw_err | Error in the equivalent width described above | REAL |
| h_delta_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| h_delta_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| h_delta_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| h_delta_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| h_delta_eqw_err | Error in the equivalent width described above | REAL |
| h_delta_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| h_delta_flux_err | Error in the flux | REAL |
| h_delta_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| h_delta_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| h_delta_reqw_err | Error in the equivalent width described above | REAL |
| h_gamma_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| h_gamma_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| h_gamma_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| h_gamma_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| h_gamma_eqw_err | Error in the equivalent width described above | REAL |
| h_gamma_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| h_gamma_flux_err | Error in the flux | REAL |
| h_gamma_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| h_gamma_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| h_gamma_reqw_err | Error in the equivalent width described above | REAL |
| hei_5876_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| hei_5876_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| hei_5876_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| hei_5876_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| hei_5876_eqw_err | Error in the equivalent width described above | REAL |
| hei_5876_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| hei_5876_flux_err | Error in the flux | REAL |
| hei_5876_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| hei_5876_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| hei_5876_reqw_err | Error in the equivalent width described above | REAL |
| mjd | Modified Julian Date of plate observation | INTEGER |
| neiii_3869_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| neiii_3869_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| neiii_3869_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| neiii_3869_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| neiii_3869_eqw_err | Error in the equivalent width described above | REAL |
| neiii_3869_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| neiii_3869_flux_err | Error in the flux | REAL |
| neiii_3869_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| neiii_3869_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| neiii_3869_reqw_err | Error in the equivalent width described above | REAL |
| nii_6548_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| nii_6548_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| nii_6548_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| nii_6548_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| nii_6548_eqw_err | Error in the equivalent width described above | REAL |
| nii_6548_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| nii_6548_flux_err | Error in the flux | REAL |
| nii_6548_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| nii_6548_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| nii_6548_reqw_err | Error in the equivalent width described above | REAL |
| nii_6584_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| nii_6584_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| nii_6584_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| nii_6584_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| nii_6584_eqw_err | Error in the equivalent width described above | REAL |
| nii_6584_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| nii_6584_flux_err | Error in the flux | REAL |
| nii_6584_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| nii_6584_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| nii_6584_reqw_err | Error in the equivalent width described above | REAL |
| oi_6300_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| oi_6300_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| oi_6300_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| oi_6300_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| oi_6300_eqw_err | Error in the equivalent width described above | REAL |
| oi_6300_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| oi_6300_flux_err | Error in the flux | REAL |
| oi_6300_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| oi_6300_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| oi_6300_reqw_err | Error in the equivalent width described above | REAL |
| oii_3726_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| oii_3726_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| oii_3726_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| oii_3726_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| oii_3726_eqw_err | Error in the equivalent width described above | REAL |
| oii_3726_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| oii_3726_flux_err | Error in the flux | REAL |
| oii_3726_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| oii_3726_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| oii_3726_reqw_err | Error in the equivalent width described above | REAL |
| oii_3729_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| oii_3729_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| oii_3729_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| oii_3729_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| oii_3729_eqw_err | Error in the equivalent width described above | REAL |
| oii_3729_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| oii_3729_flux_err | Error in the flux | REAL |
| oii_3729_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| oii_3729_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| oii_3729_reqw_err | Error in the equivalent width described above | REAL |
| oii_chi2 | chi^2 of the fit to the [O II] line in free fit | REAL |
| oii_flux | The flux of the [O II] doublet from a free fit. | REAL |
| oii_flux_err | The estimated uncertainty on OII_FLUX | REAL |
| oii_sigma | The width of the [O II] line in a free fit (ie. not tied to other emission lines) | REAL |
| oii_voff | The velocity offset of the [O II] doublet from a free fit | REAL |
| oiii_4363_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| oiii_4363_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| oiii_4363_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| oiii_4363_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| oiii_4363_eqw_err | Error in the equivalent width described above | REAL |
| oiii_4363_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| oiii_4363_flux_err | Error in the flux | REAL |
| oiii_4363_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| oiii_4363_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| oiii_4363_reqw_err | Error in the equivalent width described above | REAL |
| oiii_4959_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| oiii_4959_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| oiii_4959_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| oiii_4959_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| oiii_4959_eqw_err | Error in the equivalent width described above | REAL |
| oiii_4959_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| oiii_4959_flux_err | Error in the flux | REAL |
| oiii_4959_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| oiii_4959_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| oiii_4959_reqw_err | Error in the equivalent width described above | REAL |
| oiii_5007_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| oiii_5007_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| oiii_5007_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| oiii_5007_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| oiii_5007_eqw_err | Error in the equivalent width described above | REAL |
| oiii_5007_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| oiii_5007_flux_err | Error in the flux | REAL |
| oiii_5007_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| oiii_5007_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| oiii_5007_reqw_err | Error in the equivalent width described above | REAL |
| oiii_chi2 | chi^2 of the fit to the [O III]5007 line in free fit | REAL |
| oiii_flux | The flux of the [O III]5007 line from a free fit. | REAL |
| oiii_flux_err | The estimated uncertainty on OIII_FLUX | REAL |
| oiii_sigma | The width of the [O III]5007 line in a free fit (ie. not tied to other emission lines) | REAL |
| oiii_voff | The velocity offset of the [O III]5007 line from a free fit | REAL |
| plateid | Plate number | SMALLINT |
| random_id | Random ID in the range 0.0 => 100.0 | REAL |
| sdss_joinid | Unique ID based on PLATE, MJD, FIBERID for joining across data releases | BIGINT |
| sigma_balmer | Velocity dispersion (sigma not FWHM) measured simultaneously in all of the Balmer lines | REAL |
| sigma_balmer_err | Error in the above | REAL |
| sigma_forbidden | Velocity dispersion (sigma not FWHM) measured simultaneously in all the forbidden lines | REAL |
| sigma_forbidden_err | Error in the above | REAL |
| sii_6717_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| sii_6717_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| sii_6717_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| sii_6717_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| sii_6717_eqw_err | Error in the equivalent width described above | REAL |
| sii_6717_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| sii_6717_flux_err | Error in the flux | REAL |
| sii_6717_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| sii_6717_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| sii_6717_reqw_err | Error in the equivalent width described above | REAL |
| sii_6731_chisq | Reduced chi-squared of the line fit over the bandpass used for the EW measurement | REAL |
| sii_6731_cont | Continuum at line center from 200 pixel median smoothing of the emission-line subtracted continuum | REAL |
| sii_6731_cont_err | Error in the continuum computed from the variance in the band pass | REAL |
| sii_6731_eqw | The equivalent width of the CB08 continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative) . This properly takes into account stellar absorption. Note that it will not be correct in the case of blended lines (ie NII & H-alpha) | REAL |
| sii_6731_eqw_err | Error in the equivalent width described above | REAL |
| sii_6731_flux | Flux from Gaussian fit to continuum subtracted data. (Note that the fit is done simultaneously to all the lines so de-blending happens automatically) | REAL |
| sii_6731_flux_err | Error in the flux | REAL |
| sii_6731_inst_res | Instrumental resolution at the line center (measured for each spectrum from the ARC lamps) | REAL |
| sii_6731_reqw | The equivalent width of the continuum-subtracted emission line computed from straight integration over the bandpasses listed below (emisison is negative). In this case the continuum comes from a running 200 pixel median and does not properly account for stellar absorption. In general the EQW measurements provide a better measure of the true equivalent width. The purpose of this measurement is to help characterize the stellar absorption effecting the line. (EW_stellar = REQW - EQW) | REAL |
| sii_6731_reqw_err | Error in the equivalent width described above | REAL |
| specobjid | Unique ID | BIGINT |
| spectofiber | The multiplicative scale factor applied to the original flux and error spectra prior to measurement of the emission lines to improve the spectrophotometric accuracy. The rescaling insures that a synthetic r-band magnitude computed from the spectrum matches the r-band fiber magnitude measured by the photometric pipeline. | REAL |
| v_off_balmer | Velocity offset of the Balmer lines from the measured redshift | REAL |
| v_off_balmer_err | Error in the above | REAL |
| v_off_forbidden | Velocity offset of the forbidden lines from the measured redshift | REAL |
| v_off_forbidden_err | Error in the above | REAL |
