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Table: sdss_dr12.stellarmass_portsmouth
(The bold columns are indexed columns)
| Column Name | Description | Datatype |
|---|---|---|
| absmagk | Absolute magnitude in K inferred from model | REAL |
| age | Age of best fit | REAL |
| dec | Declination of fiber, J2000 | DOUBLE |
| elat | Ecliptic Latitude | DOUBLE |
| elon | Ecliptic Longitude | DOUBLE |
| fiberid | Fiber ID | SMALLINT |
| glat | Galactic Latitude | DOUBLE |
| glon | Galactic Longitude | DOUBLE |
| htm9 | HTM index (order 9 => ~10 arcmin size) | INTEGER |
| imf | Initial Mass Function, "salpeter" or "kroupa" | CHAR |
| logmass | Best-fit stellar mass of galaxy | REAL |
| logmass_nomassloss | Best-fit stellar mass of galaxy (log base 10 in solar masses) | REAL |
| maxage | 1-sigma maximum age (where chi-squared is within minimum + 1) | REAL |
| maxlogmass | 1-sigma maximum stellar mass (where chi-squared is within minimum + 1) | REAL |
| maxlogmass_nomassloss | 1-sigma maximum stellar mass (where chi-squared is within minimum + 1), not accounting for mass loss | REAL |
| maxsfr | 1-sigma maximum star-formation rate of best fit (where chi-squared is within minimum + 1) | REAL |
| medianpdf | Median value in mass PDF (log base 10 in solar masses) | REAL |
| medianpdf_nomassloss | Median value in mass PDF, not accounting for mass loss (log base 10 in solar masses) | REAL |
| metallicity | Metallicity of best fit template (0.004, 0.01, 0.02, 0.04, or "composite") | CHAR |
| minage | 1-sigma minimum age (where chi-squared is within minimum + 1) | REAL |
| minlogmass | 1-sigma minimum stellar mass (where chi-squared is within minimum + 1) | REAL |
| minlogmass_nomassloss | 1-sigma minimum stellar mass (where chi-squared is within minimum + 1), not accounting for mass loss | REAL |
| minsfr | 1-sigma minimum star-formation rate of best fit (where chi-squared is within minimum + 1) | REAL |
| mjd | MJD of observation | INTEGER |
| model | Star formation model, "passive" or "starforming" | CHAR |
| nest4096 | HEALPIX index (Nsides 4096, Nest scheme => ~52 arcsec size) | INTEGER |
| nfilter | Number of filters used in the fit (default is 5 for ugriz) | SMALLINT |
| pdf16 | 16% lower limit on stellar mass in PDF | REAL |
| pdf16_nomassloss | 16% lower limit on stellar mass in PDF, not accounting for mass loss | REAL |
| pdf84 | 84% upper limit on stellar mass in PDF | REAL |
| pdf84_nomassloss | 84% upper limit on stellar mass in PDF, not accounting for mass loss | REAL |
| peakpdf | Peak of PDF (log base 10 in solar masses) | REAL |
| peakpdf_nomassloss | Peak of PDF, not accounting for mass loss (log base 10 in solar masses) | REAL |
| plate | Plate number | SMALLINT |
| ra | Right ascension of fiber, J2000 | DOUBLE |
| random_id | Random ID in the range 0.0 => 100.0 | REAL |
| reddeninglaw | ID of best fit reddening law (0 = no reddening) | SMALLINT |
| reducedchi2 | Reduced chi squared of best fit | REAL |
| ring256 | HEALPIX index (Nsides 256, Ring scheme => ~14 arcmin size) | INTEGER |
| sdss_joinid | Unique ID based on PLATE, MJD, FIBERID for joining across data releases | BIGINT |
| sfh | Star-formation history model used ("const" or "tau=X" or "trunc=X", where X is the exponential decline rate, or the time until truncation of the model) | CHAR |
| sfr | Star-formation rate of best fit | REAL |
| specobjid | Unique ID | BIGINT |
| z | Redshift used (corresponds to z_noqso in specObjAll) | REAL |
| zerr | Error in z (corresponds to zErr_noqso in specObjAll) | REAL |
