J/ApJ/667/673 FIRST-2MASS red quasar survey (Glikman+, 2007)
The FIRST-2MASS Red Quasar Survey.
Glikman E., Helfand D.J., White R.L., Becker R.H., Gregg M.D., Lacy M.
<Astrophys. J., 667, 673-703 (2007)>
=2007ApJ...667..673G 2007ApJ...667..673G
ADC_Keywords: QSOs ; Surveys ; Infrared sources ; Radio sources ; Photometry
Keywords: dust, extinction - quasars: general - surveys
Abstract:
Combining radio observations with optical and infrared color
selection, demonstrated in our pilot study to be an efficient
selection algorithm for finding red quasars, we have obtained optical
and infrared spectroscopy for 120 objects in a complete sample of 156
candidates from a sky area of 2716deg2.
Description:
Spectroscopic follow-up of our candidates was carried out over a 5
year period at four observatories at both optical and near-infrared
wavelengths. A majority of the optical spectra were obtained at the
10m W.M. Keck Observatory in Hawaii using the ESI and, to a lesser
extent, the LRIS spectrographs. A handful of spectra were obtained
with the Kast spectrograph on the 3m Shane Telescope at Lick
Observatory.
The near-infrared observations, spanning 0.8-2.5um, were conducted at
the NASA Infrared Telescope Facility (IRTF) with the SpeX spectrograph
Five near-infrared spectra, spanning 0.95-2.5um, were obtained at the
MDM Observatory on Kitt Peak with the TIFKAM infrared camera in
spectroscopic mode.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 121 135 F2M red quasar candidates
table2.dat 120 22 F2M candidates with JSNR<3 and J-K<1.7
obscode.dat 38 29 Observation codes
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See also:
VIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
J/ApJ/607/60 : FIRST-2MASS faint sources (Glikman+, 2004)
Byte-by-byte Description of file: table[12].dat
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Bytes Format Units Label Explanations
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1- 2 I2 h RAh Hour of Right Ascension (J2000)
4- 5 I2 min RAm Minute of Right Ascension (J2000)
7- 11 F5.2 s RAs Second of Right Ascension (J2000)
13 A1 --- DE- Sign of the Declination (J2000)
14- 15 I2 deg DEd Degree of Declination (J2000)
17- 18 I2 arcmin DEm Arcminute of Declination (J2000)
20- 23 F4.1 arcsec DEs Arcsecond of Declination (J2000)
25- 31 F7.2 mJy Fpk FIRST catalog peak 20cm flux density
33- 39 F7.2 mJy Fint FIRST catalog integrated 20cm flux density
41 A1 --- l_Bmag Limit flag on Bmag
42- 46 F5.2 mag Bmag ?=99.90 Apparent B band magnitude
47 A1 --- f_Bmag [b] Bmag undetected (1)
49 A1 --- l_Rmag Limit flag on Rmag
50- 54 F5.2 mag Rmag Apparent R band magnitude
55 A1 --- f_Rmag [b] Rmag undetected (1)
57 A1 --- l_Jmag Limit flag on Jmag
58- 63 F6.3 mag Jmag Apparent J band magnitude
64 A1 --- f_Jmag [a] Jmag from 2MASS-PSC (2)
66- 71 F6.3 mag Hmag Apparent H band magnitude
72 A1 --- f_Hmag [a] Hmag from 2MASS-PSC (2)
74- 79 F6.3 mag Kmag Apparent K band magnitude
80 A1 --- f_Kmag [a] Kmag from 2MASS-PSC (2)
82 A1 --- l_J-K Limit flag on J-K color index
83- 86 F4.2 mag J-K J-K color index
88 A1 --- l_R-K Limit flag on R-K
89- 92 F4.2 mag R-K R-K color index
94-100 A7 --- Type ? Object classification
102-107 F6.4 --- z ? Spectroscopic redshift
109-111 A3 --- O.opt ? Code for optical observation, in obscode file
113-115 A3 --- O.IR ? Code for near-infrared observation,
in obscode file
117-121 A5 --- Ref ? Code for references in the literature (3)
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Note (1): 'b' indicates that the B and/or R magnitudes were undetected in
GSC-II. We replace these with r and g magnitudes from SDSS.
Note (2): 'a' indicates that J, H, and Ks magnitudes are from the
2MASS All-Sky data Release catalog (Cat. II/246)
Note (3): References as follows:
B01 = Becker et al. (2001, Cat. J/ApJS/135/227)
D97 = Drinkwater et al. (1997, Cat. VIII/34)
Gr96 = Gregg et al. (1996, Cat. J/AJ/112/407)
Gr02 = Gregg et al. (2002ApJ...564..133G 2002ApJ...564..133G)
Gl04 = Glikman et al (2004, Cat. J/ApJ/607/60)
Lac02 = Lacy et al. (2002AJ....123.2925L 2002AJ....123.2925L)
Law96 = Lawrence et al. (1996ApJS..107..541L 1996ApJS..107..541L)
P98 = Perlman et al. (1998, cat. J/AJ/115/1253)
S02 = Smith et al (2002, Cat. J/ApJ/569/23)
S93 = Stickel et al. (1993, Cat. III/175)
V96 = Vermeulen et al. (1996AJ....111.1013V 1996AJ....111.1013V )
X94 = Xu et al (1994AJ....108..395X 1994AJ....108..395X)
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Byte-by-byte Description of file: obscode.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- ObsCode Observation code
5- 23 A19 --- Inst Instrument
25- 38 A14 --- Date Observation date
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History:
From electronic version of the journal
References:
Glikman et al., Paper I 2004ApJ...607...60G 2004ApJ...607...60G, Cat. J/ApJ/607/60
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 23-Nov-2009