J/ApJS/253/53ivo://CDS.VizieR/J/ApJS/253/53doi:10.26093/cds/vizier.22530053CDSWilliams B.F.Durbin M.J.Dalcanton J.J.Lang D.Girardi L.,Smercina A.Dolphin A.Weisz D.R.Choi Y.Bell E.F.Rosolowsky E.,Skillman E.Koch E.W.Lindberg C.W.Hagen L.Gordon K.D.Seth A.,Gilbert K.Guhathakurta P.Lauer T.Bianchi L.2022-09-14T06:14:14Z2022-09-13T13:33:15ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frhst-photometryultraviolet-astronomyvisible-astronomyinfrared-astronomygalaxiesWe present panchromatic resolved stellar photometry for 22 million stars in the Local Group dwarf spiral Triangulum (M33), derived from Hubble Space Telescope observations with the Advanced Camera for Surveys in the optical (F475W, F814W), and the Wide Field Camera 3 in the near-ultraviolet (F275W, F336W) and near-infrared (F110W, F160W) bands. The large, contiguous survey area covers ~14kpc^2^ and extends to 3.5kpc (14', or 1.5-2 scale lengths) from the center of M33. The PHATTER observing strategy and photometry technique closely mimics that of Panchromatic Hubble Andromeda Treasury, but with updated photometry techniques that take full advantage of all overlapping pointings (aligned to within <5-10mas) and improved treatment of spatially varying point-spread functions. The photometry reaches a completeness-limited depth of F475W~28.5 in the lowest surface density regions observed in M33 and F475W~26.5 in the most crowded regions found near the center of M33. We find the young populations trace several relatively tight arms, while the old populations show a clear, looser two-armed structure. We present extensive analysis of the data quality, including artificial star tests to quantify completeness, photometric uncertainties, and flux biases.2021ApJS..253...53Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/253/53CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/AJ/110/1649 : VI photometry near the M33 nucleus (Mighell+ 1995)J/ApJ/469/629 : UV-brightest stars of M33 and its nucleus (Massey+ 1996)J/ApJS/122/431 : Star Clusters in M33 (Chandar+, 1999)J/A+A/366/498 : VI photometry of M33 star clusters (Chandar+, 2001)J/ApJS/149/343 : Giant molecular clouds in M33 (Engargiola+, 2003)J/AJ/131/2478 : M31 and M33 UBVRI photometry (Massey+, 2006)J/ApJ/661/830 : Giant molecular clouds of M33 (Rosolowsky+, 2007)J/ApJ/664/850 : Spitzer observations of stars in M33 (McQuinn+, 2007)J/ApJ/675/1213 : Abundances in M33 HII regions (Rosolowsky+, 2008)J/A+A/487/131 : JHKs photometry of LPVs in M33 (Cioni+, 2008)J/AcA/59/47 : HST photometry of M33 stellar clusters (Zloczewski+, 2009)J/ApJ/696/729 : Fluxes and abundances of PNe in M33 (Magrini+, 2009)J/ApJ/699/839 : Newly identified star clusters in M33. II. (San Roman+, 2009)J/A+A/512/A63 : Abundances of M33 HII regions (Magrini+, 2010)J/A+A/522/A3 : M33 CO(2-1) and HI integrated intensity maps (Gratier+, 2010)J/ApJ/724/799 : RR Lyrae variables in M33. II. (Yang+, 2010)J/ApJS/193/31 : M33 Chandra ACIS survey: final catalog (Tullmann+, 2011)J/AJ/144/113 : Cepheids & companions in M33 from HST images (Chavez+, 2012)J/ApJ/795/170 : Sample SNRs for M31 and M33 (Jennings+, 2014)J/ApJS/215/9 : PHAT X. UV-IR photometry of M31 stars (Williams+, 2014)J/ApJ/802/127 : PHAT stellar cluster survey. II. AP catalog (Johnson+, 2015)J/ApJS/218/9 : Deep XMM-Newton survey of M33 (Williams+, 2015)J/MNRAS/451/3400 : Star clusters in M33 (Beasley+, 2015)J/A+A/586/A37 : M33 center and BCLMP302 [CII] spectroscopy (Mookerjea+, 2016)J/ApJ/825/50 : Variable stars in M31 & M33. III. YSGs & RSGs (Gordon+, 2016)J/ApJ/836/64 : Luminous variable stars in M31 & M33. IV. (Humphreys+, 2017)J/ApJ/842/97 : Spectroscopic obs. of 413 HII regions in M33 (Lin+, 2017)J/ApJ/846/145 : PHAT. XIX. Formation history of M31 disk (Williams+, 2017)J/ApJ/868/55 : Structure of M31 halo. II. PAndAS (McConnachie+, 2018)J/ApJS/241/37 : 1.4 and 5GHz deep JVLA radio survey of M33 (White+, 2019)J/ApJS/260/41 : Dust extinction law in nearby galaxies. II. M33 (Wang+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/253/53https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/253/53http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/253/53https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/253/53https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/253/53http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/253/53GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/253/53/table1 (Exposure data for all fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/253/53/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/253/53/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/253/53/table1?GETtext/xml+votable180.050000true23.638166730.79928610.005555555555555556Cone search capability for table J/ApJS/253/53/table3 (Artificial star data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/253/53/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/253/53/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/253/53/table3?GETtext/xml+votable180.050000true23.436615630.64749550.005555555555555556Cone search capability for table J/ApJS/253/53/table6 (Photometric data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/253/53/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/253/53/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/253/53/table6?GETtext/xml+votable180.050000true23.340786430.52347580.0055555555555555566/2154-21551.1796835550914393e-19 7.886974166154988e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/253/53?format=asciiUVOpticalInfrareddefaultJ/ApJS/253/53/table1Exposure data for all fieldsTargetTarget Namemeta.id;meta.maincharFiltFiltermeta.id;instr.filtercharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[1] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[30] Degree of Declination (J2000)pos.eq.dec;meta.mainDateISO 8601 Date/Time at start of exposurestime.epochnullableExp[10/700] Exposure timestime.duration;obs.exposurefloatInstInstrument ("WFC3" or "ACS")meta.id;instrcharAperInstrument aperturephys.angSize;instr.fovcharOrient[-133.3/99.84] Orientationdeginstr.offsetfloatJ/ApJS/253/53/table3Artificial star dataF814Wsnr[-8.5/1719] Signal-to-noise ratio, F814Wstat.snrfloatF814Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[23.43/23.57] Right Ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000[30.64/30.84] Declination (J2000)degpos.eq.dec;meta.mainindexedF275W[15.47/35.5] Input F275W magnitudemagphot.mag;em.UV.200-300nmfloatdF275W[-9.5/10.3]? Magnitude difference, F275W out - inmagphot.mag;arith.difffloatnullableF275Wsnr[-6.1/1323] Signal-to-noise ratio, F275Wstat.snrfloatF275Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualcharF336W[16/32.31] Input F336W magnitudemagphot.mag;em.opt.UfloatdF336W[-8.2/9.9]? Magnitude difference, F336W out - inmagphot.mag;arith.difffloatnullableF336Wsnr[-5.8/1718] Signal-to-noise ratio, F336Wstat.snrfloatF336Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualcharF475W[17.75/30.86] Input F475W magnitudemagphot.mag;em.opt.BfloatdF475W[-8.62/8.6]? Magnitude difference, F475W out - inmagphot.mag;arith.difffloatnullableF475Wsnr[-12.3/1955] Signal-to-noise ratio, F475Wstat.snrfloatF475Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualcharF814W[18/29.13] Input F814W magnitudemagphot.mag;em.opt.IfloatdF814W[-8.7/9.3]? Magnitude difference, F814W out - inmagphot.mag;arith.difffloatnullableF110W[16.87/28.58] Input F110W magnitudemagphot.mag;em.IR.JfloatdF110W[-9.3/12.7]? Magnitude difference, F110W out - inmagphot.mag;arith.difffloatnullableF110Wsnr[-7.2/1967] Signal-to-noise ratio, F110Wstat.snrfloatF110Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualcharF160W[15.84/28] Input F160W magnitudemagphot.mag;em.IR.HfloatdF160W[-9.9/9.6]? Magnitude difference, F160W out - inmagphot.mag;arith.difffloatnullableF160Wsnr[-10.9/2262] Signal-to-noise ratio, F160Wstat.snrfloatF160Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualcharJ/ApJS/253/53/table5Bias and uncertainty as a function of magnitude and stellar densityBias[-0.5/0.18] Photometric bias (median output - input)magstat.errorfloatErr[0.001/0.52] AST-derived uncertainty (2)magstat.error;phot.magfloatDOLPHOT[0.001/0.24] DOLPHOT-reported uncertaintymagstat.error;phot.magfloatRatio[0.87/29.05] AST/DOLPHOT uncertainty ratiostat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDen1[0/0.9] Lower range of density, star counts per square arcsec (1)arcsec**-2src.density;stat.minfloatDen2[0.15/0.9]? Upper range of density, star counts per square arcsec (1)arcsec**-2src.density;stat.maxfloatnullableFiltFiltermeta.id;instr.filtercharBin[17.5/28] Magnitude binmagphot.magfloatJ/ApJS/253/53/table6Photometric datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[23.34/23.67] Right Ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000[30.48/30.86] Declination (J2000)degpos.eq.dec;meta.mainindexedF275W[14.69/44.76]? Measured HST/WFC3 F275W near-UV magnitudemagphot.mag;em.UV.200-300nmfloatnullableF275Wsnr[-9.6/606.5] Signal-to-noise ratio, F275Wstat.snrfloatF275Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualcharF336W[15.62/46.2]? Measured HST/WFC3 F336W near-UV magnitudemagphot.mag;em.opt.UfloatnullableF336Wsnr[-13.3/869.5] Signal-to-noise ratio, F336Wstat.snrfloatF336Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualcharF475W[16.72/45.47]? Measured HST/ACS optical F475W magnitudemagphot.mag;em.opt.BfloatnullableF475Wsnr[-23.6/1758] Signal-to-noise ratio, F475Wstat.snrfloatF475Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualcharF814W[14.14/44.45]? Measured HST/ACS optical F814W magnitudemagphot.mag;em.opt.IfloatnullableF814Wsnr[-19.2/1701.3] Signal-to-noise ratio, F814Wstat.snrfloatF814Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualcharF110W[13/42.6]? Measured HST/WFC3 near-IR F110W magnitudemagphot.mag;em.IR.JfloatnullableF110Wsnr[-7.9/8071.1] Signal-to-noise ratio, F110Wstat.snrfloatF110Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualcharF160W[12/42.13]? Measured HST/WFC3 near-IR F160W magnitudemagphot.mag;em.IR.HfloatnullableF160Wsnr[-21.4/10410] Signal-to-noise ratio, F160Wstat.snrfloatF160Wgst[TF] Fulfills GST quality requirements (G1)meta.code.qualchar