J/ApJ/741/98 Spectroscopy of galaxy clusters to find LCBGs (Crawford+, 2011)
Spectroscopy of luminous compact blue galaxies in distant clusters.
I. Spectroscopic data.
Crawford S.M., Wirth G.D., Bershady M.A., Hon K.
<Astrophys. J., 741, 98 (2011)>
=2011ApJ...741...98C 2011ApJ...741...98C
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Spectroscopy ;
Redshifts ; Surveys
Keywords: galaxies: clusters: general - galaxies: distances and redshifts -
galaxies: clusters: individual (MS0451-03, Cl0016+16, ClJ1324+3011 -
MS1054-03, ClJ1604+430) - galaxies: evolution - galaxies: starburst
Abstract:
We used the DEIMOS spectrograph on the Keck II Telescope to obtain
spectra of galaxies in the fields of five distant, rich galaxy
clusters over the redshift range 0.5<z<0.9 in a search for luminous
compact blue galaxies (LCBGs). Unlike traditional studies of galaxy
clusters, we preferentially targeted blue cluster members identified
via multi-band photometric pre-selection based on imaging data from
the WIYN telescope. Of the 1288 sources that we targeted, we
determined secure spectroscopic redshifts for 848 sources, yielding a
total success rate of 66%. Our redshift measurements are in good
agreement with those previously reported in the literature, except for
11 targets which we believe were previously in error. Within our
sample, we confirm the presence of 53 LCBGs in the five galaxy
clusters.
Description:
The WIYN Long-term Variability (WLTV) survey is a photometric census
of 10 massive galaxy clusters over the redshift range 0.3<z<0.9
undertaken with the WIYN 3.5m telescope. The observations were
completed over a six-year period from 1999 October until 2005 June
with the Mini-Mosaic camera in UBRI. Full details of the observations,
data reduction, and analysis appear in Crawford et al.
(2009ApJ...690.1158C 2009ApJ...690.1158C).
We completed spectroscopic observations of the clusters fields using
DEIMOS on the Keck II Telescope during 2005 November and 2007 April.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 64 5 Summary of fields observed
table4.dat 91 1286 WIYN Long-term Variability (WLTV) DEIMOS catalog
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See also:
J/ApJS/199/23 : IR and UV star formation in ACCEPT BCGs (Hoffer+, 2012)
J/ApJS/188/280 : Spectroscopic catalog in 24 clusters (Stern+, 2010)
J/ApJ/724/714 : Velocity dispersions of MS1054-03 + Coma gal. (Holden+, 2010)
J/ApJ/708/1076 : The WHIQII survey: compact blue galaxies (Tollerud+, 2010)
J/ApJ/671/1503 : Cl 0024+16 and MS 0451-03 spectrophotometry (Moran+, 2007)
J/ApJ/665/1067 : Velocities in Cl 0024+16 and MS 0451-03 (Moran+, 2007)
J/ApJ/661/750 : Photometry & spectroscopy of MS 1054-03 members (Tran+, 2007)
J/MNRAS/379/1546 : z'BVRi' photometry of ClG 0016+1609 (Tanaka+, 2007)
J/MNRAS/366/144 : 0.06<z<1.20 galaxies Tully-Fisher relation (Nakamura+, 2006)
J/AJ/131/1891 : Phot. survey of MS 1054-03 field (Foerster-Schreiber+, 2006)
J/ApJS/142/153 : Distant galaxy clusters photometry (Stanford+, 2002)
J/AJ/122/1125 : BVRI photometry in 3 high-z clusters (Postman+, 2001)
J/ApJS/122/51 : Spectroscopic cat. of 10 rich galaxy clusters (Dressler+ 1999)
J/ApJS/116/247 : CNOC cluster redshift survey catalogs. VI. (Ellingson+ 1998)
J/ApJS/78/1 : Galaxies in 7 clusters 0.35<z<0.55 (Dressler+, 1992)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Field Galaxy cluster name
15- 17 A3 --- ObsID WLTV internal designation for each of the
clusters
19- 20 I2 h RAh Hour of right ascension (J2000) (1)
22- 23 I2 min RAm Minute of right ascension (J2000)
25- 28 F4.1 s RAs Second of right ascension (J2000)
30 A1 --- DE- Sign of declination (J2000) (1)
31- 32 I2 deg DEd Degree of declination (J2000) (1)
34- 35 I2 arcmin DEm Arcminute of declination (J2000)
37- 38 I2 arcsec DEs Arcsecond of declination (J2000)
40- 45 F6.4 --- z Measured cluster redshift
47- 50 I4 km/s Sig(z) Measured cluster velocity dispersion σ
52- 55 F4.2 10+15Msun M200 Cluster virial mass computed from Sig(z)
57- 60 F4.2 Mpc R200p Cluster virial radius computed from Sig(z)
62- 64 I3 arcsec R200 Cluster virial radius in angular units for
our adopted cosmology
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Note (1): Celestial coordinates of the adopted cluster center defined by
brightest cluster galaxy.
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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 --- --- [WLTV]
6- 24 A19 --- WLTV Object identifier (JHHMMSS.ss+DDMMSS.s)
26- 36 F11.7 deg RAdeg Right Ascension in decimal degrees (J2000)
38- 47 F10.7 deg DEdeg Declination in decimal degrees (J2000)
49- 53 F5.2 mag Rmag [5.3/32.8] Total R band magnitude
55- 60 A6 --- Mask Mask name (w01.m1 to w10.m3) (1)
62- 63 I2 --- Slit [0/93] Slit number
65- 72 F8.5 --- z [0/3.11]? Measured spectroscopic redshift
74- 75 I2 --- q_z [-2/4] Quality code of z, 4=best (2)
77- 84 F8.5 --- zlit ? Literature redshift
86 I1 --- r_zlit [1/7]? Reference for zlit (3)
88- 91 A4 --- Class Photometric classification (4)
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Note (1): Slit mask observation data (table 3):
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No. Mask Obs. Date Int.Time Grating Blaze Filter lambdac Range
(UT) (s) (l/mm) (0.1nm) (0.1nm) (0.1nm) (0.1nm)
------------------------------------------------------------------------------
1 w01.m1 2005-Nov-03 4800 900 5500 GG455 6500 4700-8300
2 w01.m2 2005-Nov-03 3600 900 5500 GG455 6500 4700-8300
3 w01.m3 2005-Nov-03 3600 900 5500 GG455 6500 4700-8300
4 w01.m4 2005-Nov-03 3600 900 5500 GG455 6500 4700-8300
5 w05.m1 2005-Nov-03 3600 900 5500 GG455 6500 4700-8300
6 w05.m2 2005-Nov-03 3600 900 5500 GG455 6500 4700-8300
7 w05.m3 2005-Nov-03 3600 900 5500 GG455 6500 4700-8300
8 w05.m4 2005-Nov-03 3600 900 5500 GG455 6500 4700-8300
9 w07.m1 2007-Apr-17 3600 1200 7760 OG550 7800 6450-9150
10 w07.m3 2007-Apr-17 3600 1200 7760 OG550 7800 6450-9150
11 w08.m1 2007-Apr-17 3600 1200 7760 OG550 7500 6150-8850
12 w08.m2 2007-Apr-17 3600 1200 7760 OG550 7500 6150-8850
13 w10.m1 2007-Apr-17 3600 1200 7760 OG550 8000 6650-9350
14 w10.m2 2007-Apr-17 3600 1200 7760 OG550 8000 6650-9350
15 w10.m3 2007-Apr-17 4800 1200 7760 OG550 8000 6650-9350
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Note (a): Nominal wavelength range for a slit lying in the center of the mask;
actual wavelength range depends on slit position.
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Note (2): Quality of z (table 5) as follows:
4 = Very secure redshift (P>99%); at least two spectral features identified
3 = Secure redshift (P>95%); one strong line and another weak feature
identified or single wide line
2 = Uncertain redshift; signal is present but no unambiguous spectral line
identified
1 = No redshift; S/N too poor
-1 = Star
-2 = No redshift measured because of instrumental artifacts in spectrum
Note (3): Reference as follows:
1 = Dressler & Gunn (1992, Cat. J/ApJS/78/1);
2 = Ellingson et al. (1998, Cat. J/ApJS/116/247);
3 = Postman et al. (2001, Cat. J/AJ/122/1125);
4 = Nakamura et al. (2006, Cat. J/MNRAS/366/144);
5 = Moran et al. (2007, Cat. J/ApJ/671/1503);
6 = Tanaka et al. (2007, Cat. J/MNRAS/379/1546);
7 = Tran et al. (2007, Cat. J/ApJ/661/750).
Note (4): Classification type as follows (see section 1 for more details):
BC = "blue cloud", actively star-forming objects
LCBG = Luminous Compact Blue Galaxies, an extreme star-forming class of
galaxies initially identified at intermediate redshifts
(Koo et al. 1994ApJ...427L...9K 1994ApJ...427L...9K).
RS = "Red Sequence", passive galaxies
STAR = stellar spectrum.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 25-Feb-2013