PHATTER (Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region)
Description
The PHATTER dataset contains UV-optical-NIR photometry for 22 million stars in the central ~0.1 deg² of M33 for the Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region ("PHATTER") survey. They use the filters F275W and F336W on the WFC3/UVIS camera, F475W and F814W on ACS/WFC, and the F110W and F160W on WFC3/IR. UVIS data reach a magnitude limit of ~25 in F275W and F336W. ACS data reach maximum depths of ~28 magnitudes in F475W and ~27 magnitudes in F814W in the uncrowded outer disk. In these same regions, WFC3/IR data reach maximum depths of ~26.5 and ~25.5 in F110W and F160W, respectively. However, the depths are crowding limited in the optical and NIR, and thus is a strong function of radius. As a result, photometry in the inner bulge fields is far shallower. The source catalog is available at Astro Data Lab as phatter.phot_mod.
The phatter.phot_mod table has been crossmatched against our default reference datasets within a 1.5 arcsec radius, nearest neighbor only. These tables will appear with x1p5 in their name in our table browser. Example: phatter.x1p5__phot_mod__gaia_dr3__gaia_source.
For more information about this survey, see Williams et al. 2021 or visit the PHATTER webpage.
Image: The approximate footprints of each photometric subsection of PHATTER are plotted on a Sloan Digital Sky Survey (SDSS) image of M33.
| PHATTER Tables | |
|---|---|
| phot_mod | Full-stack 6-band photometry tables for each subsection of the survey (21,980,690 rows) |
Data Access
The PHATTER data are accessible by a variety of means:
Data Lab Table Access Protocol (TAP) service
TAP provides a convenient access layer to the PHATTER catalog database. TAP-aware clients (such as TOPCAT) can point to https://datalab.noirlab.edu/tap, select the phatter database, and see the database tables and descriptions. You can also view the PHATTER tables and descriptions in the Data Lab table browser.
Data Lab Query Client
The Query Client is available as part of the Data Lab software distribution. The Query Client provides a Python API to Data Lab database services. These services include anonymous and authenticated access through synchronous or asynchronous queries of the catalog made directly to the database. Additional Data Lab services for registered users include personal database storage and storage through the Data Lab VOSpace.
The Query Client can be called from a Jupyter Notebook on the Data Lab Notebook server. Example notebooks are provided to users upon creation of their user account (register here), and are also available to browse on GitHub at https://github.com/astro-datalab/notebooks-latest.
Acknowledgments
Please remember to cite the appropriate paper(s) below and the DOI if you use these data in a published work.
Williams et al. 2021, The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER) I. Ultraviolet to Infrared Photometry of 22 Million Stars in M33.
Note: These HLSP data products are licensed for use under CC BY 4.0.
