J/ApJ/638/725 Fundamental manifold of spheroids (Zaritsky+, 2006)
The fundamental manifold of spheroids.
Zaritsky D., Gonzalez A.H., Zabludoff A.I.
<Astrophys. J., 638, 725-738 (2006)>
=2006ApJ...638..725Z 2006ApJ...638..725Z
ADC_Keywords: Models ; Galaxies, spectra
Keywords: galaxies: elliptical and lenticular, cD - galaxies: formation -
galaxies: fundamental parameters - galaxies: structure
Abstract:
We present a unifying empirical description of the structural and
kinematic properties of all spheroids embedded in dark matter halos.
We find that the intracluster stellar spheroidal components of galaxy
clusters, which we call cluster spheroids (CSphs) and which are
typically 100 times the size of normal elliptical galaxies, lie on a
fundamental plane as tight as that defined by elliptical galaxies (rms
in effective radius of 0.07) but having a different slope.
Description:
We obtained spectra of galaxies in the fields of the 12 clusters from
Paper I (Gonzalez et al., 2005ApJ...618..195G 2005ApJ...618..195G) with insufficient
kinematic data in the literature. We observed those galaxies with the
Hydra spectrograph at the CTIO Blanco 4m telescope on the nights of
2003 July 28-31 using the KPGL1 grating, which has 632lines/mm and
provides a dispersion of 0.59Å/pixel.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 21 447 Measurements Used in Fitting the Fundamental Manifold
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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- 5 F5.2 [kpc] logR Log of effective radius
7- 11 F5.2 [km/s] logsig Log of velocity dispersion
13- 17 F5.2 [solLum/pc2] logI Log of mean surface brightness within
the effective radius
19- 21 A3 --- Ref [1-6, ] Reference(s) (1)
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Note (1): References as follows:
1 = This paper
2 = Gonzalez et al. (2005ApJ...618..195G 2005ApJ...618..195G)
3 = Jorgensen et al. (1996MNRAS.280..167J 1996MNRAS.280..167J)
4 = Oegerle & Hoessel (1991ApJ...375...15O 1991ApJ...375...15O)
5 = Geha et al. (2003AJ....126.1794G 2003AJ....126.1794G)
6 = Matkovic & Guzman (2005MNRAS.362..289M 2005MNRAS.362..289M)
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History:
From electronic version of the journal
Reference:
Gonzalez et al., Paper I 2005ApJ...618..195G 2005ApJ...618..195G
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 26-Sep-2008