J/ApJS/141/61 Morphology of satellite galaxies (Gutierrez+, 2002)
The properties of satellite galaxies in external systems.
I. Morphology and structural parameters.
Gutierrez C.M., Azzaro M., Prada F.
<Astrophys. J. Suppl. Ser. 141, 61 (2002)>
=2002ApJS..141...61G 2002ApJS..141...61G
ADC_Keywords: Galaxies, optical ; Morphology
Keywords: galaxies: fundamental parameters - galaxies: general -
galaxies: structure
Abstract:
We present the first results of an ongoing project to study the
morphological, kinematical, dynamical, and chemical properties of
satellite galaxies of external giant spiral galaxies. The sample of
objects has been selected from the catalog by Zaritsky et al.
(1993ApJ...405..464Z 1993ApJ...405..464Z). The paper analyzes the morphology and
structural parameters of a subsample of 60 such objects. The
satellites span a great variety of morphologies and surface brightness
profiles. About two-thirds of the sample are spirals and irregulars,
the remaining third being early-types. Some cases showing interaction
between pairs of satellites are presented and briefly discussed.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 95 60 Morphology and Structural Parameters of
Satellite Galaxies
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [ZSFW]
6- 11 A6 --- ZSFW Galaxy name (1)
13- 14 I2 h RAh Right ascension (J2000.0) (from Simbad)
16- 17 I2 min RAm Right ascension (J2000.0) (from Simbad)
19- 22 F4.1 s RAs Right ascension (J2000.0) (from Simbad)
24 A1 --- DE- Declination sign (J2000.0) (from Simbad)
25- 26 I2 deg DEd Declination (J2000.0) (from Simbad)
28- 29 I2 arcmin DEm Declination (J2000.0) (from Simbad)
31- 32 I2 arcsec DEs Declination (J2000.0)
34- 38 F5.1 mag BMAG Absolute B magnitude, from Zaritsky et al.,
1997ApJ...478...39Z 1997ApJ...478...39Z
40- 42 I3 kpc Dist Projected distance between the satellite and
the parent galaxy
44 A1 --- Filt [VRI] Filter used
46- 49 F4.1 arcsec re ? Radius of the bulge in arcsec (h0=0.75)
51- 53 F3.1 kpc re21 ? Radius of the bulge in kpc (h0=0.75)
55- 57 F3.1 --- n ? Sersic parameter of the bulge (3)
59- 62 F4.1 arcsec rd ? Length scale of the disk in arcsec
64- 66 F3.1 kpc rd2 ? Length scale of the disk in kpc
68- 71 F4.2 --- B/T ? Bulge to total luminosity ratio, computed
from the structural parameters above
73- 95 A23 --- HType Morphological Hubble type (2)
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Note (1): We wish to make the following remarks on some of the individual
objects:
1. ZSFW N488c and ZSFW N2424b are examples of a low surface brightness
galaxies without any structure. Other galaxies in the sample such
as NGC 4030c also have low surface brightness, but in this case
there are knots.
2. There are a few cases of spiral edge-on galaxies in which we were
not able to determine the Hubble type and no satisfactory fit was
found. In these cases we have classified them as S.
3. Many galaxies (∼25%) show signs of distortion, and at least in two
cases interactions (see below).
4. ZSFW N488b and ZSFW N2775b are examples of spiral galaxies with
very distorted disks.
In the case of ZSFW N488b only the bulge was fitted.
Note (2): For the great majority of the objects it was possible to
determine their morphological type. The symbols * and ** quoted in
some of the cases mean uncertain classification and signs of
distortion/interaction, respectively.
Note (3): the Sersic parameter n expressed the luminosity L
being proportional to r(1/n)
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History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 17-Sep-2002