J/MNRAS/422/494 X-ray properties of optically selected ETGs (Danielson+, 2012)
The cosmic history of hot gas cooling and radio active galactic nucleus activity
in massive early-type galaxies.
Danielson A.L.R., Lehmer B.D., Alexander D.M., Brandt W.N., Luo B.,
Miller N., Xue Y.Q., Stott J.P.
<Mon. Not. R. Astron. Soc., 422, 494-509 (2012)>
=2012MNRAS.422..494D 2012MNRAS.422..494D
ADC_Keywords: Galaxy catalogs ; X-ray sources ; Redshifts ; Radio sources
Keywords: galaxies: elliptical and lenticular, cD - galaxies: evolution -
X-rays: galaxies
Abstract:
We study the X-ray properties of 393 optically selected early-type
galaxies (ETGs) over the redshift range of z≈0.0-1.2 in the
Chandra Deep Fields (CDFs). To measure the average X-ray properties of
the ETG population, we use X-ray stacking analyses with a subset of
158 passive ETGs (148 of which were individually undetected in X-ray).
This ETG subset was constructed to span the redshift ranges of
z=0.1-1.2 in the ≈4Ms CDF-South and ≈2Ms CDF-North and z=0.1-0.6 in
the ≈250ks Extended-CDF-South where the contribution from
individually undetected active galactic nuclei (AGN) is expected to be
negligible in our stacking.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 76 393 Master catalogue of Early-Type Galaxies
table3.dat 95 24 Radio-bright Early-Type Galaxies (ETGs)
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See also:
J/ApJ/635/243 : Sample of GOODS/CDFS early-type galaxies (Ferreras+, 2005)
J/ApJ/666/863 : GOODS MIPS early-type galaxies (Van Der Wel+, 2007)
J/ApJ/731/L41 : Bright early-type galaxies 1.4GHz observations (Brown+, 2011)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 F11.7 deg RAdeg Right ascension (J2000)
13- 23 F11.7 deg DEdeg Declination (J2000)
25- 29 F5.3 --- z Spectroscopic or photometry redshift
31 A1 --- n_z [sp] spec/phot redshift flag
33- 37 F5.2 mag z850 HST z850 magnitude
39- 44 F6.2 mag UMAG Absolute U magnitude
46- 51 F6.2 mag BMAG Absolute B magnitude
53- 58 F6.2 mag VMAG Absolute V magnitude
60- 64 F5.2 [Lsun] logLB Luminosity in B band
66- 70 F5.2 [Msun] logM* Stellar mass
72 I1 --- X? [0/1] X-ray detection flag
74 I1 --- rad? [0/1] 1.4GHz detection flag
76 I1 --- IR? [0/1] 24um detection flag
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Optical right ascension (J2000)
4- 5 I2 min RAm Optical right ascension (J2000)
7- 12 F6.3 s RAs Optical right ascension (J2000)
14 A1 --- DE- Optical declination sign (J2000)
15- 16 I2 deg DEd Optical declination (J2000)
18- 19 I2 arcmin DEm Optical declination (J2000)
21- 26 F6.3 arcsec DEs Optical declination (J2000)
28- 32 F5.3 --- z Redshift
34- 39 F6.1 uJy F1.4 Flux density at 1.4GHz
41- 45 F5.1 uJy e_F1.4 rms uncertainty on F1.4
47- 52 F6.3 [10+23W/Hz] logL1.4 Radio luminosity at 1.4GHz
54- 58 F5.3 [10+23W/Hz] e_logL1.4 ? rms uncertainty on logL1.4
60 A1 --- l_F24 Limit flag on F24
61- 66 F6.1 uJy F24 Flux density at 24um
68- 71 F4.1 uJy e_F24 ? rms uncertainty on F24
73 A1 --- l_q24 Limit flag on q24
74- 79 F6.3 [-] q24 q24 ratio (logF24um/F1.4GHz)
81 A1 --- l_LX Limit flag on LX
82- 86 F5.2 10+35W/m2 LX ?=- X-ray (0.5-2Kev) luminosity (1)
88- 91 F4.1 [Lsun] logLB Luminosity in B band
93 A1 --- ext? [Y/N] Extended emission flag
95 A1 --- Note [AS] AGN/Stellar Classification note (2)
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Note (1): iX-ray luminosity (in 1042erg/cm2/s) derived from SB1(0.5-1keV)
counts and converted using the 1.5keV Raymond-Smith plasma.
Note (2): Classification note as follows:
A = radio emission dominated by an AGN
S = radio detected ETGs for which the radio emission is likely
dominated by star formation (as implied by their q24 value)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 27-Nov-2012