J/ApJS/191/143 HST/ACS Coma cluster survey. II. (Hammer+, 2010)
The HST/ACS Coma cluster survey. II. Data description and source catalogs.
Hammer D., Verdoes Kleijn G., Hoyos C., Den Brok M., Balcells M.,
Ferguson H.C., Goudfrooij P., Carter D., Guzman R., Peletier R.F.,
Smith R.J., Graham A.W., Trentham N., Peng E., Puzia T.H., Lucey J.R.,
Jogee S., Aguerri A.L., Batcheldor D., Bridges T.J., Chiboucas K.,
Davies J.I., Del Burgo C., Erwin P., Hornschemeier A., Hudson M.J.,
Huxor A., Jenkins L., Karick A., Khosroshahi H., Kourkchi E., Komiyama Y.,
Lotz J., Marzke R.O., Marinova I., Matkovic A., Merritt D., Miller B.W.,
Miller N.A., Mobasher B., Mouhcine M., Okamura S., Percival S.,
Phillipps S., Poggianti B.M., Price J., Sharples R.M., Tully R.B.,
Valentijn E.
<Astrophys. J., Suppl. Ser., 191, 143-159 (2010)>
=2010ApJS..191..143H 2010ApJS..191..143H
ADC_Keywords: Clusters, galaxy ; Galaxy catalogs ; Galaxies, photometry
Keywords: catalogs ; galaxies: clusters: individual: Coma ; galaxies: dwarf ;
galaxies: elliptical and lenticular, cD ; galaxies: photometry
Abstract:
The Coma cluster, Abell 1656, was the target of an HST-ACS Treasury
program designed for deep imaging in the F475W and F814W passbands.
Although our survey was interrupted by the ACS instrument failure in
early 2007, the partially completed survey still covers ∼50% of the
core high-density region in Coma. Observations were performed for 25
fields that extend over a wide range of cluster-centric radii (1.75Mpc
or 1°) with a total coverage area of 274arcmin2. The majority of
the fields are located near the core region of Coma (19/25 pointings)
with six additional fields in the southwest region of the cluster. In
this paper, we present reprocessed images and SEXTRACTOR source
catalogs for our survey fields, including a detailed description of
the methodology used for object detection and photometry, the
subtraction of bright galaxies to measure faint underlying objects,
and the use of simulations to assess the photometric accuracy and
completeness of our catalogs. We also use simulations to perform
aperture corrections for the SEXTRACTOR Kron magnitudes based only on
the measured source flux and its half-light radius. We have performed
photometry for 73,000 unique objects; approximately one-half of our
detections are brighter than the 10σ point-source detection
limit at F814W=25.8mag(AB). The slight majority of objects (60%) are
unresolved or only marginally resolved by ACS. We estimate that Coma
members are 5%-10% of all source detections, which consist of a large
population of unresolved compact sources (primarily globular clusters
but also ultra-compact dwarf galaxies) and a wide variety of extended
galaxies from a cD galaxy to dwarf low surface brightness galaxies.
The red sequence of Coma member galaxies has a color-magnitude
relation with a constant slope and dispersion over 9mag
(-21<MI←13). The initial data release for the HST-ACS Coma Treasury
program was made available to the public in 2008 August. The images
and catalogs described in this study relate to our second data
release.
Description:
This data release contains catalogs for the ACS Images in F475W and
F814W bands of 25 fields in the Coma cluster of galaxies. Each field
is about 202x202arcsec. Please see the release notes for further
details.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
h737831.dat 881 2618 Sources in list#h737831 (scale=0.05arcsec/pix)
h737841.dat 881 2507 Sources in list#h737841 (scale=0.05arcsec/pix)
h737851.dat 881 2270 Sources in list#h737851 (scale=0.05arcsec/pix)
h737861.dat 881 2771 Sources in list#h737861 (scale=0.05arcsec/pix)
h737871.dat 881 3499 Sources in list#h737871 (scale=0.05arcsec/pix)
h737881.dat 881 2219 Sources in list#h737881 (scale=0.05arcsec/pix)
h737891.dat 881 2335 Sources in list#h737891 (scale=0.05arcsec/pix)
h737901.dat 881 7096 Sources in list#h737901 (scale=0.05arcsec/pix)
h737911.dat 881 2023 Sources in list#h737911 (scale=0.05arcsec/pix)
h737921.dat 881 2440 Sources in list#h737921 (scale=0.05arcsec/pix)
h737931.dat 881 2419 Sources in list#h737931 (scale=0.05arcsec/pix)
h737941.dat 881 2481 Sources in list#h737941 (scale=0.05arcsec/pix)
h737951.dat 881 3086 Sources in list#h737951 (scale=0.05arcsec/pix)
h737961.dat 881 2169 Sources in list#h737961 (scale=0.05arcsec/pix)
h737971.dat 881 2706 Sources in list#h737971 (scale=0.05arcsec/pix)
h737981.dat 881 3185 Sources in list#h737981 (scale=0.05arcsec/pix)
h737991.dat 881 3055 Sources in list#h737991 (scale=0.05arcsec/pix)
h738001.dat 881 3263 Sources in list#h738001 (scale=0.05arcsec/pix)
h738011.dat 881 3523 Sources in list#h738011 (scale=0.05arcsec/pix)
h738021.dat 881 2894 Sources in list#h738021 (scale=0.05arcsec/pix)
h738031.dat 881 4536 Sources in list#h738031 (scale=0.05arcsec/pix)
h738041.dat 881 3679 Sources in list#h738041 (scale=0.05arcsec/pix)
h738051.dat 881 2795 Sources in list#h738051 (scale=0.05arcsec/pix)
h738061.dat 881 3141 Sources in list#h738061 (scale=0.05arcsec/pix)
h738071.dat 881 2250 Sources in list#h738071 (scale=0.05arcsec/pix)
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Byte-by-byte Description of file: h73*.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- SID [0/7097] Record number (SID)
6- 14 F9.5 deg RAdeg Right ascension (ICRS) (RA)
16- 24 F9.5 deg DEdeg Declination (ICRS) (DEC)
26- 32 F7.3 pix a [0.6/251] RMS profile of isophotal pixels
along major axis (A)
34- 40 F7.3 pix awin [0/950]? windowed (Gaussian) RMS profile of
isophotal pixels along major axis (AWIN_IMAGE)
42- 48 F7.3 pix b [0.1/66.57] RMS profile of isophotal pixels
along minor axis (B)
50- 56 F7.3 pix bwin [0/770]? windowed (Gaussian) RMS profile of
isophotal pixels along minor axis (BWIN_IMAGE)
58- 64 F7.4 ph/s bg [-0.09/0.36] Background flux at centroid
position (BackGr)
66- 69 F4.2 --- Cl [0/1]? Star(1)/Galaxy(0) class (CLASS_STAR)
71- 74 A4 --- --- [COMA]
75 A1 --- --- [i] (Filter)
76- 95 A20 --- ComaID Unique ID assigned to each object
(HHMMSS.sss+DDMMSS.ss) (COMA_ID) (3)
97-106 F10.6 pix-2 cxx [0/27] ellipse parameter for isophotal pixels
in Cartesian system (CXX_IMAGE)
108-117 F10.6 pix-2 cxy [-12/12]? ellipse parameter for isophotal
pixels in Cartesian system (CXY_IMAGE)
119-128 F10.6 pix-2 cyy [0/26] ellipse parameter for isophotal pixels
in Cartesian system (CYY_IMAGE)
130-135 F6.3 --- a/b [1/37] ellipse elongation (ELONGATION)
137-143 F7.3 pix e_awin [0/976]? error on awin (ERRAWIN_IMAGE)
145-151 F7.3 pix e_a [0/1] error on a (ERRA_IMAGE)
153-159 F7.3 pix e_bwin [0/153]?=999.999 error on (ERRBWIN_IMAGE)
161-167 F7.3 pix e_b [0/0.29] error on b (ERRB_IMAGE)
169-173 F5.1 deg e_theta [-90/90]? error on theta (ERRTHETAWIN_IMAGE)
175-179 F5.1 deg e_the [-90/90]? error on (ERRTHETA_IMAGE)
181-184 A4 --- --- [None] (FLAG)
186-187 I2 --- fB [0/31]? F475W Sextractor flag (FLAGS_F475) (2)
189-190 I2 --- --- [-1] (FLAGS_OBJ)
192-198 F7.3 ph/s e_Fauto ?=-99.999 error on Fauto (FLUXERR_AUTO)
200-206 F7.3 ph/s e_FisoI ?=-99.999 error on FisoI (FLUXERR_ISO)
208-214 F7.3 ph/s e_FisoB ?=-99.999 error on FisoB (FLUXERRISOF475)
216-226 F11.3 ph/s Fauto [-81/593319] Flux measured within elliptical
Kron aperture (FLUX_AUTO)
228-238 F11.3 ph/s FisoI [-5.0/1356683] Flux measured across F814W
isophotal pixels (FLUX_ISO)
240-250 F11.3 ph/s FisoB [-27/841156] F475 flux measured across F814W
isophotal pixels (FLUXISOF475)
252-261 F10.3 pix r.2 ?=-9999 Radius of circular aperture that
encloses 20% of FLUX AUTO (FLUXRADIUS1)
263-272 F10.3 pix r.3 ?=-9999 Radius of circular aperture that
encloses 30% of FLUX AUTO (FLUXRADIUS2)
274-283 F10.3 pix r.5 ?=-9999 radius of circular aperture that
encloses 50% of FLUX AUTO (FLUXRADIUS3)
285-294 F10.3 pix r.8 ?=-9999 radius of circular aperture that
encloses 80% of FLUX AUTO (FLUXRADIUS4)
296-305 F10.3 pix r.9 ?=-9999 radius of circular aperture that
encloses 90% of FLUX AUTO (FLUXRADIUS5)
307-312 F6.2 pix FWHM [-28/533]? FWHM assuming isophotal pixels have
Gaussian light distribution (FWHM_IMAGE)
314-315 I2 --- fI [0/31]? F814W Sextractor flags (Flag) (2)
317-333 I17 --- HTM Hierarchical Triangular Mesh cell (HTM)
335-336 I2 --- Ifl [0/15]? F814W exposure flags
(IMAFLAGS_ISO) (1)
338-339 I2 --- Bfl [0/15]? F475W exposure flags
(IMAFLAGSISOF475) (1)
341-350 F10.3 pix rKron [3.5/13]?=-9999 Kron radius (KRON_RADIUS)
352-358 F7.4 --- Level [0.0098/0.066] (Level)
360-365 F6.3 mag e_Imag1 ? error on Imag1 (MAGERRAPER1)
367-372 F6.3 mag e_Bmag1 ? error on Bmag1 (MAGERRAPER1_F475)
374-379 F6.3 mag e_Imag2 ? error on Imag2 (MAGERRAPER2)
381-386 F6.3 mag e_Bmag2 ? error on Bmag2 (MAGERRAPER2_F475)
388-393 F6.3 mag e_Imag3 ? error on Imag3 (MAGERRAPER3)
395-400 F6.3 mag e_Bmag3 ? error on Bmag3 (MAGERRAPER3_F475)
402-407 F6.3 mag e_Imag4 ? error on Imag4 (MAGERRAPER4)
409-414 F6.3 mag e_Bmag4 ? error on Bmag4 (MAGERRAPER4_F475)
416-421 F6.3 mag e_Imag5 ? error on Imag5 (MAGERRAPER5)
423-428 F6.3 mag e_Bmag5 ? error on Bmag5 (MAGERRAPER5_F475)
430-435 F6.3 mag e_Imag6 ? error on Imag6 (MAGERRAPER6)
437-442 F6.3 mag e_Bmag6 ? error on Bmag6 (MAGERRAPER6_F475)
444-449 F6.3 mag e_Imag7 ? error on Imag7 (MAGERRAPER7)
451-456 F6.3 mag e_Bmag7 ? error on Bmag7 (MAGERRAPER7_F475)
458-463 F6.3 mag e_Imag8 ? error on Imag8 (MAGERRAPER8)
465-470 F6.3 mag e_Bmag8 ? error on Bmag8 (MAGERRAPER8_F475)
472-477 F6.3 mag e_Imag9 ? error on Imag9 (MAGERRAPER9)
479-484 F6.3 mag e_Bmag9 ? error on Bmag9 (MAGERRAPER9_F475)
486-491 F6.3 mag e_Imag ?=-9.999 error on Imag (MAGERR_AUTO)
493-498 F6.3 mag e_Imagc ?=-9.999 error on Imagc (MAGERRAUTOCORR)
500-505 F6.3 mag e_Bmag ?=-9.999 error on Bmag (MAGERRAUTOF475)
507-512 F6.3 mag e_Iiso ?=-9.999 error on Iiso (MAGERR_ISO)
514-519 F6.3 mag e_Iisoc [/99]?=-9.999 error on Iisoc (MAGERR_ISOCOR)
521-526 F6.3 mag e_Biso ?=99.999 error on Biso (MAGERRISOF475)
528-533 F6.3 mag e_Ipetr ?=99.999 error on Ipetr (MAGERR_PETRO)
535-540 F6.3 mag Imag1 [10/99] F814W AB magnitude measured within
aperture of 0.12" (MAGAPER1)
542-547 F6.3 mag Bmag1 [10/99] F475W AB magnitude measured within
aperture of 0.12" (MAGAPER1_F475)
549-554 F6.3 mag Imag2 [10/99] F814W AB magnitude measured within
aperture of 0.4" (MAGAPER2)
556-561 F6.3 mag Bmag2 [10/99] F475W AB magnitude measured within
aperture of 0.4" (MAGAPER2_F475)
563-568 F6.3 mag Imag3 [10/99] F814W AB magnitude measured within
aperture of 1" (MAGAPER3)
570-575 F6.3 mag Bmag3 [10/99] F475W AB magnitude measured within
aperture of 1" (MAGAPER3_F475)
577-582 F6.3 mag Imag4 [10/99] F814W AB magnitude measured within
aperture of 1.5" (MAGAPER4)
584-589 F6.3 mag Bmag4 [10/99] F475W AB magnitude measured within
aperture of 1.5" (MAGAPER4_F475)
591-596 F6.3 mag Imag5 [10/99] F814W AB magnitude measured within
aperture of 3" (MAGAPER5)
598-603 F6.3 mag Bmag5 [10/99] F475W AB magnitude measured within
aperture of 3" (MAGAPER5_F475)
605-610 F6.3 mag Imag6 [10/99] F814W AB magnitude measured within
aperture of 4.5" (MAGAPER6)
612-617 F6.3 mag Bmag6 [10/99] F475W AB magnitude measured within
aperture of 4.5" (MAGAPER6_F475)
619-624 F6.3 mag Imag7 [10/99] F814W AB magnitude measured within
aperture of 6" (MAGAPER7)
626-631 F6.3 mag Bmag7 [10/99] F475W AB magnitude measured within
aperture of 6" (MAGAPER7_F475)
633-638 F6.3 mag Imag8 [10/99] F814W AB magnitude measured within
aperture of 9" (MAGAPER8)
640-645 F6.3 mag Bmag8 [10/99] F475W AB magnitude measured within
aperture of 9" (MAGAPER8_F475)
647-652 F6.3 mag Imag9 [10/99] F814W AB magnitude measured within
aperture of 12" (MAGAPER9)
654-659 F6.3 mag Bmag9 [10/99] F475W AB magnitude measured within
aperture of 12" (MAGAPER9_F475)
661-666 F6.3 mag Imag ?=-9999 F814W AB magnitude measured within
elliptical Kron aperture (MAG_AUTO)
668-673 F6.3 mag Imagc ?=-9999 F814W corrected Kron magnitude for a
typical galaxy (AB) (MAGAUTOCORR)
675-680 F6.3 mag Bmag [/99]?=-9999 F475W AB magnitude measured
within F814W Kron aperture (MAGAUTOF475)
682-687 F6.3 mag Iiso [10/99] F814W isophotal magnitude measured
across pixels that satisfy detection
threshold (MAG_ISO)
689-694 F6.3 mag Iisoc [10/99] F814W corrected isophotal
magnitude assuming Gaussian profile
(MAG_ISOCOR)
696-701 F6.3 mag Biso [10/99] F475W color magnitude measured across
F814W isophotal pixels (MAGISOF475)
703-708 F6.3 mag Ipetr [10/99] F814W magnitude measured within
elliptical Petrosian aperture (MAG_PETRO)
710-715 F6.3 mag/arcsec2 mu.max [10/99] peak surface brightness (above
background) measured across isophotal
pixels (MU_MAX)
717-722 F6.3 mag/arcsec2 mu.thr [20.1/32]?=99 detection threshold in surface
brightness above background (MU_THRESHOLD)
724-733 F10.3 --- MaxVal [-0.014/310] (MaxVal)
735-740 I6 --- NIfl [0/262143]? Number of pixels entering Ifl
(NIMAFLAGS_ISO)
742-747 I6 --- BVfl [0/262143]? Number of pixels entering Bfl
(NIMAFLAGSISOF475)
749-754 I6 --- NPIX [0/208324]? (NPIX)
756-765 F10.3 pix rPetr [0/11]? F814W Petrosian radius (PETRO_RADIUS)
767-771 F5.1 deg PA [-90/90]? Position angle of ellipse (POSANG)
773-781 F9.5 deg DEsdss ?=-99.99999 SDSS declination (J2000)
(SDSS_DEC)
783-788 F6.3 mag umag ?=-9999 SDSS u-band (AB) Petrosian magnitude
(SDSSPETROMAGU)
790-795 F6.3 mag gmag ?=-9999 SDSS g-band (AB) Petrosian magnitude
(SDSSPETROMAGG)
797-802 F6.3 mag rmag ?=-9999 SDSS r-band (AB) Petrosian magnitude
(SDSSPETROMAGR)
804-809 F6.3 mag imag ?=-9999 SDSS i-band (AB) Petrosian magnitude
(SDSSPETROMAGI)
811-816 F6.3 mag zmag ?=-9999 SDSS z-band (AB) Petrosian magnitude
(SDSSPETROMAGZ)
818-826 F9.5 deg RAsdss ?=-99.99999 SDSS right ascension (J2000)
(SDSS_RA)
828-833 I6 --- SLID [737831/738071] Source List Identifier (SLID)
835-838 I4 --- Seq [1/7098] Sequence number (=SD+1) (SeqNr)
840-844 F5.1 deg theta [-90/90]? Windowed (Gaussian) ellipse position
angle of isophotal pixels (counter-clock-wise
w/r/t x-axis) (THETAWIN_IMAGE)
846-853 F8.3 pix Xwin [0/4400] Windowed (Gaussian) X position
(XWIN_IMAGE)
855-862 F8.3 pix Xpos [0/4400] X position of centroid (Xpos)
864-871 F8.3 pix Ywin [0/4400] Windowed (Gaussian) Y position
(YWIN_IMAGE)
873-880 F8.3 pix Ypos [0/4400] Y position of centroid (Ypos)
881 A1 --- --- [|]
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Note (1): the exposure and Image Location Flags are:
0 = object pixels have nominal exposure time and location
1 = object pixel(s) are located within region of subtracted bright galaxy
2 = object pixel(s) are located within 32 pixels of the image edge
4 = object pixel(s) have an effective exposure less than two-thirds the
nominal exposure
8 = object pixel(s) have zero effective exposure
(e.g., object is truncated by image edge)
Note (2): SExtractor Internal Flags are:
0 = no flags
1 = MAG AUTO photometry may be biased by nearby neighbors (>10% of area is
affected)
2 = object was originally blended with another source
4 = one or more pixels is saturated
8 = object is truncated at image boundary
16 = aperture data are incomplete or corrupted
Note (3): the source is named
<[HVH2010] Comai JHHMMSS.sssDDMMSS.ss> in Simbad
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See also:
http://www.astro-wise.org/projects/COMALS/ : HST-ACS Coma Legacy Survey
Home Page
History:
From http://www.astro-wise.org/
(End) Francois Ochsenbein [CDS] 09-Dec-2010