J/ApJS/219/29 Spectroscopic redshifts in strong lens fields (Momcheva+, 2015)
A spectroscopic survey of the fields of 28 strong gravitational lenses.
Momcheva I.G., Williams K.A., Cool R.J., Keeton C.R., Zabludoff A.I.
<Astrophys. J. Suppl. Ser., 219, 29 (2015)>
=2015ApJS..219...29M 2015ApJS..219...29M (SIMBAD/NED BibCode)
ADC_Keywords: Gravitational lensing ; Spectroscopy ; Redshifts ; Surveys ;
Galaxy catalogs
Keywords: catalogs; galaxies: distances and redshifts; galaxies: general;
gravitational lensing: strong; surveys
Abstract:
We present the spectroscopic redshift catalog from a wide-field survey
of the fields of 28 galaxy-mass strong gravitational lenses. We
discuss the acquisition and reduction of the survey data, collected
over 40 nights of 6.5m MMT and Magellan time, employing four different
multiobject spectrographs. We determine that no biases are introduced
by combining data sets obtained with different telescope and
spectrograph combinations. Special care is taken to determine redshift
uncertainties using repeat observations. The redshift catalog consists
of 9768 new and unique galaxy redshifts. 82.4% of the catalog
redshifts are between z=0.1 and z=0.7, and the catalog median redshift
is zmed=0.36. The data from this survey will be used to study the
lens environments and line-of-sight structures to gain a better
understanding of the effects of large-scale structure on lens
statistics and lens-derived parameters.
Description:
We selected our sample of galaxy-mass lenses from the CASTLES, a
survey that obtained Hubble Space Telescope (HST) images in the H, I,
and V bands of galaxy-scale lenses and binary quasars with the NICMOS
and WFPC2 cameras (GO: 7495, 7887; PI: Falco).
We obtained deep I and either V or R images of each field between 2002
May and 2006 January using the MOSAIC imagers on the 4m Cerro Tololo
Inter-American Observatory (CTIO) Blanco telescope for the southern
fields and the 4m KPNO Mayall telescope for the northern fields.
We carried out the follow-up spectroscopy using the Magellan 6.5m
telescopes for the southern targets and the MMT 6.5m telescope for the
northern targets. B2114 was observed with both Magellan and the MMT.
On Magellan, we employed the Low Dispersion Survey Spectrograph-2
(LDSS-2), Low Dispersion Survey Spectrograph-3 (LDSS-3), and IMACS
multislit spectrographs. On the MMT, we used the Hectospec multifiber
spectrograph. The observations were carried out between 2003 March and
2006 September.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 118 29 Gravitational lens galaxies
table6.dat 67 10641 Spectroscopic catalog
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See also:
VIII/72 : CLASS survey of radio sources (Myers+, 2003)
VIII/60 : Interferometer phase calibration sources (Patnaik+ 1998)
J/ApJS/213/35 : SHELS: galaxy redshift survey for R≤20.6 (Geller+, 2014)
J/A+A/556/A22 : R-band light curves of RX J1131-1231 (Tewes+, 2013)
J/MNRAS/425/2116 : Arizona CDFS Environment Survey, ACES (Cooper+, 2012)
J/ApJS/200/8 : AGES: the AGN and Galaxy Evolution Survey (Kochanek+, 2012)
J/A+A/536/A53 : R-band light curves of HE 0435-1223 (Courbin+, 2011)
J/ApJ/690/670 : The Sloan lens ACS Survey. VIII. (Treu+, 2009)
J/A+A/488/481 : Time delays and H0 from WFI J2033-4723 (Vuissoz+, 2008)
J/ApJ/681/1017 : Chandra observations of lens groups (Fassnacht+, 2008)
J/ApJ/664/777 : Multiwavelength study of RX J1117.4+0743 (Carrasco+, 2007)
J/A+A/470/821 : BLOX Cluster catalog (Dietrich+, 2007)
J/ApJ/663/164 : VLT & ACS observations in RDCS J1252.9-2927 (Demarco+, 2007)
J/AJ/132/231 : MMT redshift survey of 24um sources (Papovich+, 2006)
J/ApJ/641/169 : Spectroscopy in lens fields (Momcheva+, 2006)
J/A+A/440/53 : VRc light curves of SBSG 1520+530 (Gaynullina+, 2005)
J/ApJ/625/633 : Chandra sources in B1600+434 & B1608+656 fields (Dai+, 2005)
J/ApJ/625/6 : Galaxy groups in the DEEP2 GRS (Gerke+, 2005)
J/MNRAS/348/866 : 2dFGRS Percolation-Inferred Galaxy Group (2PIGG) (Eke+, 2004)
J/A+A/391/481 : R-band photometry of SBS1520+530 (Burud+, 2002)
J/ApJ/569/689 : Distant cluster hunting. II. (Donahue+, 2002)
J/AJ/123/1807 : SDSS galaxy clusters redshifts (Goto+, 2002)
J/ApJ/552/427 : Galaxy groups a intermediate redshifts (Carlberg+, 2001)
J/MNRAS/320/387 : The A3528 complex (Bardelli+, 2001)
J/ApJS/130/237 : LCRS loose groups of galaxies (Tucker+, 2000)
J/AJ/119/2598 : u'g'r'i'z' phot. of LCRS galaxies (Sowards-Emmerd+, 2000)
J/A+A/358/77 : Hamburg/ESO survey for bright QSOs. III. (Wisotzki+, 2000)
J/MNRAS/308/233 : RIXOS source sample X-ray spectra (Mittaz+, 1999)
J/ApJ/502/558 : Catalog of ROSAT galaxy clusters (Vikhlinin+ 1998)
J/A+AS/129/399 : The ENACS Catalogue. V. (Katgert+ 1998)
J/AJ/112/407 : The FIRST bright QSO survey (Gregg+, 1996)
J/ApJS/78/1 : Galaxies in 7 clusters 0.35<z<0.55 (Dressler+, 1992)
J/MNRAS/244/408 : LDSS Deep Redshift Survey (Colless+ 1990)
http://www.cfa.harvard.edu/castles/ : CASTLES survey home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Lens Full lens designation
16- 17 I2 h RAh Hour of right ascension (J2000)
19- 20 I2 min RAm Minute of right ascension (J2000)
22- 26 F5.2 s RAs Second of right ascension (J2000)
28 A1 --- DE- Sign of declination (J2000)
29- 30 I2 deg DEd Degree of declination (J2000)
32- 33 I2 arcmin DEm Arcminute of declination (J2000)
35- 38 F4.1 arcsec DEs Arcsecond of declination (J2000)
40- 44 F5.3 --- zl [0.1/0.9]? Spectroscopic redshift of
the lens galaxy
45 A1 --- f_zl [d] d: photometric redshift
47- 51 F5.2 mag Imag [16.7/21.9]? HST F814W magnitude of the lens
galaxy
52 A1 --- f_Imag [e] e: SDSS i' magnitude
54- 58 F5.3 --- zs [0.6/4.5]? Spectroscopic redshift of the source
59 A1 --- f_zs [d] d: photometric redshift
61- 65 F5.1 d delt [7.8/161]? Time delay (1)
67- 70 F4.1 d E_delt ? Positive error on delt
72- 76 F5.2 d e_delt ? Negative error on delt
78- 82 A5 --- Img Image configuration (2)
84- 86 I3 --- Ngrp [5/470]? Number of group members (3)
88- 90 I3 --- E_Ngrp [100]? Positive error on Ngrp
92- 93 I2 --- e_Ngrp [90]? Negative error on Ngrp
95- 99 F5.1 km/s sigma [1/440]? Velocity dispersion of the group
101-103 I3 km/s E_sigma ? Positive error on sigma
105-109 F5.1 km/s e_sigma ? Negative error on sigma
111-114 F4.1 keV kTx [0.8/16]? Temperature of diffuse X-ray emission
of the group
116-118 F3.1 keV e_kTx ? kTx uncertainty
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Note (1): If multiple time delays are measured, the longest one is listed.
Note (2): R: Einstein ring; E: extended; 2 + 2: two pairs of images of
two different sources.
Note (3): Number of spectroscopically identified group members associated
with the lens galaxy including the lens.
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- Lens Lens identifier (4)
16- 20 I5 --- ID [33/90057] Unique identifier within the field (1)
22- 30 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000)
32- 40 F9.5 deg DEdeg Declination in decimal degrees (J2000)
42- 46 F5.2 arcmin d [0/25.4] Distance from lens
48- 54 F7.5 --- z [0.001/4.5]? Spectroscopic redshift (2)
56- 62 E7.1 --- e_z [0/0.2]? Uncertainty in z (2)
64- 67 A4 --- Flag Spectroscopic flag(s) (3)
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Note (1): The ID is unique within the field but not over the entire sample.
Note (2): Blank value redshift and uncertainty indicates source is a star.
Note (3): Flag as follows:
1 = Objects with redshifts that are not in our final photometric catalog;
2 = data obtained with LDSS-2;
3 = data obtained with LDSS-3;
4 = data obtained with IMACS;
5 = data obtained with Hectospec;
6 = NED objects.
Note (4): HST14113-2914 was a misprint for HST14113+5211; corrected by CDS.
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History:
From electronic version of the journal
02-Nov-2015: Insert into VizieR
18-Apr-2017: Misprint corrected in table 6:
HST14113-2914 corrected for HST14113+5211.
Acknowledgements:
Iva Momcheva [Yale University]
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 29-Sep-2015