J/AJ/140/403 SDSS Quasar Lens Search. IV. (Inada+, 2010)
The Sloan Digital Sky Survey Quasar Lens Search.
IV. Statistical lens sample from the fifth data release.
Inada N., Oguri M., Shin M.-S., Kayo I., Strauss M.A., Hennawi J.F.,
Morokuma T., Becker R.H., White R.L., Kochanek C.S., Gregg M.D., Chiu K.,
Johnston D.E., Clocchiatti A., Richards G.T., Schneider D.P., Frieman J.A.,
Fukugita M., Gott J.R., Hall P.B., York D.G., Castander F.J., Bahcall N.A.
<Astron. J., 140, 403-415 (2010)>
=2010AJ....140..403I 2010AJ....140..403I
ADC_Keywords: Surveys ; QSOs ; Gravitational lensing
Keywords: cosmology: observations - gravitational lensing: strong -
quasars: general
Abstract:
We present the second report of our systematic search for strongly
lensed quasars from the data of the Sloan Digital Sky Survey (SDSS).
From extensive follow-up observations of 136 candidate objects, we
find 36 lenses in the full sample of 77,429 spectroscopically
confirmed quasars in the SDSS Data Release 5.
Description:
The 136 lensed quasar candidates taken from the 13,636 quasars
constitute our targets for follow-up observations, but we remove two
candidates that have already been examined.
One is the morphologically selected candidate SDSS J111816.95+074558.1
which is the well-known lensed quasar PG1115+080 (Weymann et al.
1980Natur.285..641W 1980Natur.285..641W). The other is the color-selected candidate
SDSS J165502.02+260516.5, which is a pair of quasars with slightly
different redshifts from SDSS spectroscopy. The remaining 134
candidates were observed as described in what follows using various
telescopic facilities. The observations include optical and/or
near-infrared imaging and optical spectroscopy, and are tabulated in
Tables 2 and 3.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 109 50 Morphologically Selected Candidates
table3.dat 113 174 Color-selected Candidates
table4.dat 86 19 DR5 Statistical Sample
table5.dat 112 17 DR5 Additional Lensed Quasars
refs.dat 103 55 References
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See also:
J/AJ/132/999 : SDSS Quasar Lens Search (Oguri+, 2006)
J/AJ/135/496 : SDSS Quasar Lens Search. II. (Inada+, 2008)
J/MNRAS/382/412 : Catalog of SDSS-DR5/2MASS spectroscopic quasars (Ofek, 2007)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [SDSS]
6- 24 A19 --- SDSS SDSS name (JHHMMSS.ss+DDMMSS.s)
26- 30 F5.3 --- z Redshift from the SDSS DR5 quasar catalog
32- 36 F5.2 mag imag i-Band PSF magnitude with Galactic extinction
corrections from the SDSS DR5 quasar catalog
38- 41 F4.2 arcsec theta Image separations (θSDSS)
43- 46 F4.2 mag Di Absolute i-band magnitude differences Δi
between the expected two components (1)
48- 75 A28 --- Image Instruments (and filters) used for the
follow-up observations (2)
77- 78 A2 --- Spec Spectroscope used (2)
81-107 A27 --- Com Comment
109 I1 --- Ref ? Reference, in refs.dat file
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Note (1): derived from fitting the SDSS i-band image of each candidate with
two PSFs using GALFIT.
Note (2): Instruments (and filters) are:
UF = UFTI at UKIRT
8k = UH8k at UH88
Te = Tek2k CCD at UH88
Op = Optic CCD at UH88
QU = QUIRC at UH88
WF = WFGS2 at UH88
RE = RETROCAM at MDM 2.4m
ES = ESI at Keck
NR = NIRC at Keck
EF = EFOSC2 at ESO 3.6m
NF = NICFPS at ARC 3.5m
DA = DIS III at ARC 3.5m
FO = FOCAS at Subaru
Ma = MagIC at WB 6.5m
MM = MiniMo at WIYN.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [SDSS]
6- 24 A19 --- SDSS SDSS name (JHHMMSS.ss+DDMMSS.s) (1)
26- 30 F5.3 --- z ? Redshift from the SDSS DR5 quasar catalog
32- 36 F5.2 mag imag i-Band PSF magnitude with Galactic extinction
corrections from the SDSS DR5 quasar catalog
38- 42 F5.2 arcsec theta ? Image separations (θSDSS) between the
two components from the SDSS imaging data
44- 60 A17 --- Src Instruments (and filters) used for the
follow-up observations (2)
61 A1 --- n_Src [e] e: The data are obtained from the SMOKA
(Baba et al. 2002, ASP Conf. Ser. 281, 298)
63- 67 A5 --- Spec Spectroscope used (2)
69-109 A41 --- Com Comment
111-113 A3 --- Ref Reference(s), in refs.dat file
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Note (1): Two candidates, SDSS J080623.70+200631.8 and
SDSS J145307.06+331950.5, that are identified by the morphological
selection algorithm as well, are listed in Table 2.
Note (2): Instruments (filter) are:
DA = DIS III at ARC 3.5m
NF = NICFPS at ARC 3.5m
SP = SPIcam at ARC 3.5m
UF = UFTI at UKIRT
Te = Tek2k CCD at UH88
8k = UH8k at UH88
WF = WFGS2 at UH88
QU = QUIRC at UH88
FO = FOCAS at Subaru
LR = LRIS at Keck
DO = DOLORES at TNG 3.6m
CI = CCD Imager at KPNO 2.1m
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [SDSS]
6- 15 A10 --- SDSS SDSS (truncated) name (JHHMM+DDMM)
17 I1 --- Nimg Number of images
19- 23 F5.3 --- z Source redshift from follow-up observations
25- 29 F5.3 --- zl ? Measured lens redshifts
31- 35 F5.1 mag MAG ? Absolute magnitudes of the detected
(brightest) lens galaxies (1)
37- 41 F5.2 arcsec thetaM ? Maximum image separation θM
43- 46 F4.2 --- Fratio Flux ratios between the brightest lensed
image and the farthest lensed image from
the brightest image, in the I-band images
48- 50 A3 --- Src Source (DR3 or DR5)
52- 74 A23 --- Com Comments
76- 86 A11 --- Ref References, in refs.dat file
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Note (1): The combinations of evolution- and K-corrections are included
(Poggianti, 1997, Cat. J/A+AS/122/399).
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Byte-by-byte Description of file: table5.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 A4 --- --- [SDSS]
6- 15 A10 --- SDSS SDSS (truncated) name (JHHMM+DDMM)
17 I1 --- Nimg Number of images
19- 23 F5.3 --- z Source redshift from follow-up observations
25- 29 F5.3 --- zl ? Measured lens redshift
31- 34 F4.2 arcsec thetaM ? Maximum image separation θM
36- 39 F4.2 --- Fratio Flux ratio between the brightest lensed image
and the farthest lensed image from the
brightest image, in the I-band images
41- 43 A3 --- Src SDSS source (DR3 or DR5)
45- 70 A26 --- Com Comments
72-100 A29 --- Rej The reason that each lens is excluded from
the statistical sample
102-112 A11 --- Ref References, in refs.dat file
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 44 A21 --- Aut Author's name
46-103 A58 --- Com Comments
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History:
From electronic version of the journal
References:
Oguri et al., Paper I 2006AJ....132..999O 2006AJ....132..999O, Cat. J/AJ/132/999
Inada et al., Paper II 2008AJ....135..496I 2008AJ....135..496I, Cat. J/AJ/135/496
Oguri et al., Paper III 2008AJ....135..512O 2008AJ....135..512O
(End) Patricia Vannier [CDS] 12-Jun-2012