J/AJ/142/148 IR observations of galaxies in the Coma cluster (Edwards+, 2011)
A multi-wavelength analysis of Spitzer selected Coma cluster galaxies: star
formation rates and masses.
Edwards L.O.V., Fadda D.
<Astron. J., 142, 148 (2011)>
=2011AJ....142..148E 2011AJ....142..148E
ADC_Keywords: Galaxies, IR ; Clusters, galaxy ; Photometry, SDSS ;
Photometry, infrared ; Spectra, infrared
Keywords: Galaxies: clusters: individual (Coma Cluster) - Galaxies: fundamental
parameters - Galaxies: luminosity function, mass function -
Infrared: galaxies
Abstract:
We present a thorough study of the specific star formation rates
(sSFRs) for MIPS 24um selected galaxies in the Coma cluster. We
build galaxy spectral energy distributions using optical (u', g',
r', i', z'), near-infrared (J, H, Ks), and mid- to far-infrared
(Infrared Array Camera and MIPS) photometry. New and archival spectra
confirm 210 cluster members. Subsequently, the total infrared
luminosity, galaxy stellar mass, and sSFR for the members are
determined by measuring best-fit templates. Using an array of
complementary diagnostics, we search for any contaminating active
galactic nuclei, but find few. We compare obscured SFRs to unobscured
rates derived from extinction-corrected Hα emission line
measurements. The agreement between these two values leads us to
conclude that there is no evidence for an additionally obscured
component. In our spectroscopic sample, complete to 80% for r'<19.5,
we find that all starbursts are blue and are dwarfs, having masses
<109M☉. Examining the location of these starbursts within the
cluster, we confirm that there is a lower fraction in the cluster
core.
Description:
The MIPS data field of view covers the full core of the cluster,
(0.2-0.5)*r200 (where r200 is the radius within which the cluster
density is 200 times the mean density required to close the universe).
The near-IR photometry was gathered at the Palomar 200inch telescope
using the WIRC during three nights of observations between 2008 April
23 and 25 in J, H and Ks, respectively.
We have collected archival photometry from the Spitzer Space Telescope
(PIs: Fazio, Rieke, Kitayama). The MIPS instrument (2004 Jun 22 and
2007 Jan 19) provides far-infrared images at 24um, 70um, and 160um.
IRAC data (2004 Jul 4 and 2003 Dec 18) cover the mid-infrared
wavelengths of 3.6, 4.5, 5.8, and 8.0um.
Using the SDSS Catalog Archive Server, we collect the photometric
information for the 97660 sources available with DR7 which overlap
with the 24um field of view. Inside the MIPS field of view, there are
346 galaxies with SDSS spectra.
To add to the Sloan spectra, we include our own spectroscopic
observations targeting 24um sources. We were awarded three nights
with the Hydra multiobject spectrometer on WIYN in 2008 July.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 111 210 Emission line measurements for member galaxies
table3.dat 768 7603 MIPS 24 micron source catalog (from erratum in
Edwards & Fadda, 2012, AJ, 143, 151)
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See also:
VIII/90 : The FIRST Survey Catalog, Version 12Feb16 (Becker+ 2012)
VII/42 : GMP catalogue: galaxies in the Coma cluster (Godwin+ 1983)
J/A+A/534/A31 : Spectroscopic study of 283 AGNs in Coma (Gavazzi+, 2011)
J/MNRAS/404/1745 : Dwarf galaxies in Coma supercluster (Mahajan+, 2010)
J/ApJS/169/225 : Photometry of galaxies in Coma (Eisenhardt+, 2007)
J/A+A/451/1159 : BVRI imaging of the Coma cluster (Adami+, 2006)
J/A+A/395/753 : Spectroscopy of Coma early-type gal. II. (Wegner+, 2002)
J/ApJS/137/279 : Spectroscopic Survey in Coma (Mobasher+, 2001)
J/AJ/121/2331 : SDSS redshifts in the Coma cluster (Castander+, 2001)
J/A+AS/141/113 : Coma extensive H photometry (Andreon+, 2000)
J/A+AS/122/409 : Photometric catalogue of Coma (Lobo+, 1997)
J/A+A/303/661 : Star-forming galaxies in the Coma Cluster (Donas+, 1995)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- ID Identification number
5- 14 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000)
16- 24 F9.6 deg DEdeg Declination in decimal degrees (J2000)
26- 31 F6.4 --- z [0.0153/0.0347] Redshift
33- 37 F5.2 Msun/yr SFRIR [0/11] Star formation rate from IR
spectral energy distribution
39- 44 F6.2 10+9Msun Mass [0.01/150] Mass
46- 51 F6.1 Msun/yr SFRHa ?=-999.9 Star formation rate from Hα
53- 59 F7.1 10-20W/m2 Hb ?=-999.9 Hβ emission line flux (1)
61- 66 F6.1 10-20W/m2 e_Hb ?=-999.9 Error in Hb (1)
68- 74 F7.1 10-20W/m2 OIII [5/16953]?=-999.9 The [OIII](5007) emission
line flux (1)
76- 81 F6.1 10-20W/m2 e_OIII ?=-999.9 Error in OIII (1)
83- 89 F7.1 10-20W/m2 Ha [-106/45814]?=-999.9 Hα emission line
flux (1)
91- 96 F6.1 10-20W/m2 e_Ha ?=-999.9 Error in Ha (1)
98-104 F7.1 10-20W/m2 NII [23/13733]?=-999.9 The [NII](6584) emission
line flux (1)
106-111 F6.1 10-20W/m2 e_NII ?=-999.9 Error in NII (1)
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Note (1): In units of 10-17erg/s/cm2.
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Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 --- Seq [1/7608] Catalog running sequence number
6- 15 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000)
17- 25 F9.6 deg DEdeg Declination in decimal degrees (J2000)
27- 36 F10.3 uJy S24 MIPS 24µm band flux density
38- 44 F7.3 uJy e_S24 Error in S24
46- 53 F8.3 --- S/N Signal-to-Noise of 24µm band source
55- 60 F6.3 arcsec r(SDSS) ?=-9 Separation MIPS 24µm / SDSS
62- 67 F6.3 arcsec r(3.6) ?=-9 Separation MIPS 24µm / IRAC 3.6µm
69- 74 F6.3 arcsec r(4.5) ?=-9 Separation MIPS 24µm / IRAC 4.5µm
76- 81 F6.3 arcsec r(5.8) ?=-9 Separation MIPS 24µm / IRAC 5.8µm
83- 88 F6.3 arcsec r(8.0) ?=-9 Separation MIPS 24µm / IRAC 8.0µm
90- 95 F6.3 arcsec r(J) ?=-9 Separation MIPS 24µm / WIRC J band
97-102 F6.3 arcsec r(H) ?=-9 Separation MIPS 24µm / WIRC H band
104-108 F5.3 arcsec r(K) Separation MIPS 24µm / WIRC Ks band
110-117 F8.3 arcsec r(70) ?=-9 Separation MIPS 24µm / 70µm
119-126 F8.3 arcsec r(160) ?=-9 Separation MIPS 24µm /160µm
128-132 F5.3 arcsec r(z) Separation MIPS 24µm / SDSS z-band
134-141 F8.3 mag umag ?=-999 SDSS u' band AB magnitude
143-150 F8.3 mag gmag ?=-999 SDSS g' band AB magnitude
152-159 F8.3 mag rmag ?=-999 SDSS r' band AB magnitude
161-168 F8.3 mag imag ?=-999 SDSS i' band AB magnitude
170-177 F8.3 mag zmag ?=-999 SDSS z' band AB magnitude
179-186 F8.2 uJy S3.6a4 ?=-999 IRAC 3.6µ, 4"aperture, flux density
188-195 F8.2 uJy S3.6a6 ?=-999 IRAC 3.6µ, 6"aperture, flux density
197-205 F9.2 uJy S3.6a12 ?=-999 IRAC 3.6µ, 12"aperture, flux density
207-216 F10.2 uJy S3.6P ?=-999 IRAC 3.6µ Petrosian flux density
218-225 F8.2 uJy S4.5a4 ?=-999 IRAC 4.5µ, 4"aperture, flux density
227-234 F8.2 uJy S4.5a6 ?=-999 IRAC 4.5µ, 6"aperture, flux density
236-243 F8.2 uJy S4.5a12 ?=-999 IRAC 4.5µ, 12"aperture flux density
245-254 F10.2 uJy S4.5P ?=-999 IRAC 4.5µ Petrosian flux density
256-263 F8.2 uJy S5.8a4 ?=-999 IRAC 5.8µ, 4"aperture, flux density
265-272 F8.2 uJy S5.8a6 ?=-999 IRAC 5.8µ, 6"aperture, flux density
274-282 F9.2 uJy S5.8a12 ?=-999 IRAC 5.8µ, 12"aperture, flux density
284-292 F9.2 uJy S5.8P ?=-999 IRAC 5.8µ Petrosian flux density
294-301 F8.2 uJy S8.0a4 ?=-999 IRAC 8.0µ, 4"aperture, flux density
303-310 F8.2 uJy S8.0a6 ?=-999 IRAC 8.0µ, 6"aperture, flux density
312-319 F8.2 uJy S8.0a12 ?=-999 IRAC 8.0µ, 12"aperture, flux density
321-328 F8.2 uJy S8.0P ?=-999 IRAC 8.0µ Petrosian flux density
330-337 F8.3 mag J3.5 ?=-999 WIRC/J 3.5"aperture Vega magnitude (2)
339-346 F8.3 mag JPet ?=-999 WIRC/J Petrosian Vega magnitude (2)
348-355 F8.3 mag H3.5 ?=-999 WIRC/H 3.5"aperture Vega magnitude (2)
357-364 F8.3 mag HPet ?=-999 WIRC/H Petrosian Vega magnitude (2)
366-373 F8.3 mag K3.5 ?=-999 WIRC/Ks 3.5"aperture Vega magnitude (2)
375-382 F8.3 mag KPet ?=-999 WIRC/Ks Petrosian Vega magnitude (2)
384-394 F11.3 uJy S70 ?=-999 MIPS 70µ band flux density
396-406 F11.3 uJy S160 ?=-999 MIPS 160µ band flux density
408-415 F8.3 mag e_umag ?=-999 Error in umag
417-424 F8.3 mag e_gmag ?=-999 Error in gmag
426-433 F8.3 mag e_rmag ?=-999 Error in rmag
435-442 F8.3 mag e_imag ?=-999 Error in imag
444-451 F8.3 mag e_zmag ?=-999 Error in zmag
453-459 F7.2 uJy e_S3.6a4 ?=-999 Error in S3.6a4
461-467 F7.2 uJy e_S3.6a6 ?=-999 Error in S3.6a6
469-476 F8.2 uJy e_S3.6a12 ?=-999 Error in S3.6a12
478-486 F9.2 uJy e_S3.6P ?=-999 Error in S3.6aP
488-494 F7.2 uJy e_S4.5a4 ?=-999 Error in S4.5a4
496-502 F7.2 uJy e_S4.5a6 ?=-999 Error in S4.5a6
504-511 F8.2 uJy e_S4.5a12 ?=-999 Error in S4.5a12
513-520 F8.2 uJy e_S4.5P ?=-999 Error in S4.5aP
522-528 F7.2 uJy e_S5.8a4 ?=-999 Error in S5.8a4
530-536 F7.2 uJy e_S5.8a6 ?=-999 Error in S5.8a6
538-544 F7.2 uJy e_S5.8a12 ?=-999 Error in S5.8a12
546-552 F7.2 uJy e_S5.8P ?=-999 Error in S5.8aP
554-560 F7.2 uJy e_S8.0a4 ?=-999 Error in S8.0a4
562-568 F7.2 uJy e_S8.0a6 ?=-999 Error in S8.0a6
570-576 F7.2 uJy e_S8.0a12 ?=-999 Error in S8.0a12
578-584 F7.2 uJy e_S8.0P ?=-999 Error in S8.0aP
586-593 F8.3 mag e_J3.5 ?=-999 Error in J3.5
595-602 F8.3 mag e_JPet ?=-999 Error in JPet
604-611 F8.3 mag e_H3.5 ?=-999 Error in H3.5
613-620 F8.3 mag e_HPet ?=-999 Error in HPet
622-629 F8.3 mag e_K3.5 ?=-999 Error in K3.5
631-638 F8.3 mag e_KPet ?=-999 Error in KPet
640-648 F9.3 uJy e_S70 ?=-999 Error in S70
650-658 F9.3 uJy e_S160 ?=-999 Error in S160
660-670 F11.6 --- zph ?=-999 SDSS photometric redshift
672-682 F11.6 --- e_zph ?=-999 Error in zp
684-692 F9.6 --- zsp ?=-9 Spectroscopic redshift
694 I1 --- r_zsp [1/5]?=0 Reference for zsp (1)
696 I1 --- fs24 [0/1] MIPS 24µm band separation flag
698 I1 --- S/G24 [0/1] Star/galaxy flag for MIPS 24um
700-704 F5.3 --- SI3.6 [0/1]?=9 Stellarity index for IRAC 3.6um
706-710 F5.3 --- SI4.5 [0/1]?=9 Stellarity index for IRAC 4.5um
712-716 F5.3 --- SI5.8 [0/1]?=9 Stellarity index for IRAC 5.8um
718-722 F5.3 --- SI8.0 [0/1]?=9 Stellarity index for IRAC 8.0um band
724-728 F5.3 --- SIJ [0/1]?=9 Stellarity index for WIRC J band
730-734 F5.3 --- SIH [0/1]?=9 Stellarity index for WIRC H band
736-740 F5.3 --- SIK [0/1]?=9 Stellarity index for WIRC Ks band
742 I1 --- CP3.6 [0/1]?=9 Close pair flag for IRAC 3.6um band
744 I1 --- CP4.5 [0/1]?=9 Close pair flag for IRAC 4.5um band
746 I1 --- CP5.8 [0/1]?=9 Close pair flag for IRAC 5.8um band
748 I1 --- CP8.0 [0/1]?=9 Close pair flag for IRAC 8.0um band
750 I1 --- CPJ [0/1]?=9 Close pair flag for WIRC J band
752 I1 --- CPH [0/1]?=9 Close pair flag for WIRC H band
754 I1 --- CPK [0/1]?=9 Close pair flag for WIRC Ks band
756 I1 --- S/G3.6 [0/1]?=9 Star/galaxy flag for IRAC 3.6um band
758 I1 --- S/G4.5 [0/1]?=9 Star/galaxy flag for IRAC 4.5um band
760 I1 --- S/G5.8 [0/1]?=9 Star/galaxy flag for IRAC 5.8um band
762 I1 --- S/G8.0 [0/1]?=9 Star/galaxy flag for IRAC 8.0um band
764 I1 --- S/GJ [0/1]?=9 Star/galaxy flag for WIRC J band
766 I1 --- S/GH [0/1]?=9 Star/galaxy flag for WIRC H band
768 I1 --- S/GK [0/1]?=9 Star/galaxy flag for WIRC Ks band
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Note (1): Reference as follows:
1 = Literature;
3 = SDSS-DR7 (Cat. II/294);
4 = WIYN (this paper);
5 = NED (NASA Extragalactic Database).
Note (2): WIRC = Wide-field Infrared Camera on the Palomar 200-in (5-m)
telescope
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 07-Mar-2013