J/ApJ/665/1067 Velocities in Cl 0024+16 and MS 0451-03 (Moran+, 2007)
The dynamical distinction between elliptical and lenticular galaxies in distant
clusters: further evidence for the recent origin of S0 galaxies.
Moran S.M., Loh B.L., Ellis R.S., Treu T., Bundy K., MacArthur L.A.
<Astrophys. J., 665, 1067-1073 (2007)>
=2007ApJ...665.1067M 2007ApJ...665.1067M
ADC_Keywords: Clusters, galaxy ; Redshifts ; Rotational velocities ;
Velocity dispersion
Keywords: galaxies: clusters: general -
galaxies: elliptical and lenticular, cD - galaxies: evolution -
galaxies: spiral - galaxies: stellar content
Abstract:
We examine resolved spectroscopic data obtained with the Keck II
telescope for 44 spheroidal galaxies in the fields of two rich
clusters, Cl 0024+16 (z=0.40) and MS 0451-03 (z=0.54) and contrast
this with similar data for 23 galaxies within the redshift interval
0.3<z<0.65 in the GOODS northern field. For each galaxy we examine
the case for systemic rotation, derive central stellar velocity
dispersions sigma and photometric ellipticities epsilon. Using
morphological classifications obtained via Hubble Space Telescope
imaging as the basis, we explore the utility of our kinematic
quantities in distinguishing between pressure-supported ellipticals
and rotationally supported lenticulars (S0s).
Description:
The primary data set for this paper is a comprehensive Keck
spectroscopic and HST imaging (F814W) survey of morphologically
selected spheroidals in two clusters, Cl 0024+16 (z=0.40) and
MS 0451-03 (z=0.54).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 61 67 Measurements of Cl 0024+16, MS 0451-03, and
field galaxies
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See also:
J/ApJS/116/247 : CNOC cluster redshift survey (MS 0451-03) (Ellingson+ 1998)
J/A+A/372/391 : Spectroscopic Survey of Cl 0024+1654 (Czoske+, 2001)
J/ApJ/591/53 : I photometry of Cl 0024+16 (Treu+, 2003)
J/AJ/126/2644 : CL 0024+1654 UBVI photometry (Alexov+, 2003)
J/ApJ/634/977 : Redshifts in Cl 0024+16 members (Moran+, 2005)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- [MLE2007] Sequential number (CNN or FNN) (1)
5- 14 F10.6 deg RAdeg Right ascension in decimal degrees (J2000)
16- 25 F10.6 deg DEdeg Declination in decimal degrees (J2000)
27- 31 F5.3 --- z Redshift
33 A1 --- l_vsini Limit flag on vsini (2)
34- 36 I3 km/s vsini Measured rotation velocity (2)
39- 40 I2 km/s e_vsini ? rms uncertainty on vsini
42- 44 I3 km/s sigma Velocity dispersion
46- 47 I2 km/s e_sigma rms uncertainty on sigma
49- 52 F4.2 --- Ell Galaxy ellipticity
54- 57 A4 --- MType Galaxy morphological type
60- 61 I2 deg delta Angle between the galaxy major axis and the
long axis of the spectroscopic slit
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Note (1): Galaxy IDs are designated with C for cluster members and F for
field galaxies.
Note (2): Velocities are listed uncorrected for slit misalignment. Upper
limits on velocities are 1sigma.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 06-Sep-2009