J/MNRAS/389/1924 Old stellar systems (globulars to ellipticals) (Forbes+, 2008)
Uniting old stellar systems: from globular clusters to giant ellipticals.
Forbes D.A., Lasky P., Graham A.W., Spitler L.
<Mon. Not. R. Astron. Soc., 389, 1924-1936 (2008)>
=2008MNRAS.389.1924F 2008MNRAS.389.1924F
ADC_Keywords: Clusters, globular ; Galaxies, optical ; Morphology ;
Photometry, infrared ; Velocity dispersion
Keywords: globular clusters: general - galaxies: dwarf -
galaxies: elliptical and lenticular, cD -
galaxies: fundamental parameters - galaxies: general -
galaxies: kinematics and dynamics
Abstract:
Elliptical galaxies and globular clusters (GCs) have traditionally
been regarded as physically distinct entities due to their
discontinuous distribution in key scaling diagrams involving size,
luminosity and velocity dispersion. Recently this distinctness has
been challenged by the discovery of stellar systems with mass
intermediate between those of GCs and dwarf ellipticals (such as
ultracompact dwarfs and dwarf galaxy transition objects). Here we
examine the relationship between the virial and stellar mass for a
range of old stellar systems, from GCs to giant ellipticals, and
including such intermediate-mass objects (IMOs). Improvements on
previous work in this area include the use of (i) near-infrared
magnitudes from the Two Micron All Sky Survey (2MASS), (ii) aperture
corrections to velocity dispersions, (iii) homogeneous half-light
radii and (iv) accounting for the effects of non-homology in galaxies.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 40 85 Milky Way and M31 globular clusters
table2.dat 59 41 Intermediate mass objects and dwarf galaxies
table3.dat 43 499 Elliptical galaxies
refs.dat 75 32 References
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See also:
VII/176 : Elliptical Galaxies Photometry & Spectroscopy (Faber+ 1989)
VII/202 : Globular Clusters in the Milky Way (Harris, 1997)
J/ApJS/161/304 : Star clusters in Milky Way and satellites (McLaughlin+ 2005)
J/A+A/384/371 : Kinematical data on early-type galaxies. VI (Simien+, 2002)
J/MNRAS/382/1342 : Compact stellar systems around NGC 1399 (Firth+, 2007)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Cluster name
12- 16 F5.3 Mpc Dist Distance
18- 22 F5.2 km/s sigma0 Luminosity-weighted central velocity dispersion
23 A1 --- n_sigma0 [*] * when velocity dispersion corrected (G1)
25- 30 F6.2 arcsec Rh Half light radius
32- 36 F5.2 mag Kmag 2MASS K magnitude
38 I1 --- r_sigma0 Reference for sigma0, in refs.dat file
40 I1 --- r_Rh ? Reference for Rh, in refs.dat file
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 18 A18 --- Name Object name
20- 27 A8 --- MType Morphological type
29- 34 F6.3 Mpc Dist Distance
36- 39 F4.1 km/s sigma0 Luminosity-weighted central velocity dispersion
40 A1 --- n_sigma0 [*] * when velocity dispersion corrected (G1)
41- 47 F7.2 arcsec Rh Half-light radius
49- 53 F5.2 mag Kmag 2MASS K magnitude
55- 56 I2 --- r_sigma0 Reference for sigma0, in refs.dat file
58- 59 I2 --- r_Rh ? Reference for Rh, in refs.dat file
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Galaxy name
12- 16 F5.1 Mpc Dist Distance
18- 22 F5.1 km/s sigma0 Luminosity-weighted central velocity dispersion
24- 28 F5.1 arcsec R20 ?=- 2MASS R20 radius (1)
30- 34 F5.1 arcsec Rh Half light radius (2)
36- 40 F5.2 mag Kmag 2MASS K magnitude
42- 43 I2 --- Ref References
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Note (1): Major axis radius of the K-band 20mag/arcsec2 isophote
(Jarrett et al., 2000AJ....119.2498J 2000AJ....119.2498J)
Note (2): The half light radius, Rh, is calculated from the R20 radius
following Section 2.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference code
4- 22 A19 --- BibCode BibCode
24- 51 A28 --- Aut Author's name
53- 75 A23 --- Com Comments
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Global notes:
Note (G1): An asterisk implies the velocity dispersion has been corrected
to a central value following section 2.
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History:
* 24-Mar-2009: From electronic version of the journal
* 08-Mar-2011: Corrected table3, from author,
Duncan Forbes, dforbes(at)swin.edu.au
(End) Patricia Vannier [CDS] 03-Mar-2009