J/A+A/540/A47 AMIGA X. Isolated galaxy colors (Fernandez Lorenzo+, 2012)
The AMIGA sample of isolated galaxies.
X. A first look at isolated galaxy colors.
Fernandez Lorenzo M., Sulentic J., Verdes-Montenegro L., Ruiz J.E.,
Sabater J., Sanchez S.
<Astron. Astrophys. 540, A47 (2012)>
=2012A&A...540A..47F 2012A&A...540A..47F
ADC_Keywords: Galaxy catalogs ; Galaxies, photometry ; Morphology
Keywords: galaxies: evolution - galaxies: interactions -
galaxies: fundamental parameters - galaxies: general
Abstract:
The basic properties of galaxies can be affected by both nature
(internal processes) or nurture (interactions and effects of
environment). Deconvolving the two effects is an important current
effort in astrophysics. Observed properties of a sample of isolated
galaxies should be mainly the result of internal (natural) evolution.
It follows that nurture-induced galaxy evolution can only be
understood through a comparative study of galaxies in different
environments.
We take a first look at SDSS (g-r) colors of galaxies in the AMIGA
sample, which consists of many of the most isolated galaxies in the
local Universe. This alerted us at the same time the pitfalls of using
automated SDSS colors.
Description:
Revision of the main properties for all AMIGA galaxies. Because a
significant number of new data are available for the sample since the
AMIGA project started, apparent magnitudes, morphological types,
distances, and optical luminosities for the CIG sample have been
updated. In the frame of the Wf4Ever project, the revision of these
properties was partially automated by the implementation of scientific
workflows that ask for and gather values of some of the properties for
all AMIGA galaxies from the HyperLeda catalog.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 115 1050 Main properties of the CIG sample
table2.dat 72 466 Photometric information of the CIG-SDSS sample
refs.dat 121 51 References
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See also:
VII/82 : Catalogue of Isolated Galaxies (Karachentseva+ 1986)
J/A+A/411/391 : AMIGA project. Revised positions for CIG galaxies (Leon+ 2003)
J/A+A/449/937 : AMIGA II. Morphological refinement (Sulentic+, 2006)
J/A+A/462/507 : AMIGA III. IRAS data (Lisenfeld+, 2007)
J/A+A/470/505 : AMIGA IV. Neighbours around CIG galaxies (Verley+, 2007)
J/A+A/472/121 : AMIGA V. Isolation parameters (Verley+, 2007)
J/A+A/485/475 : AMIGA VI. Radio fluxes of the isolated galaxies (Leon+ 2008)
J/A+A/486/73 : AMIGA VII. FIR and radio study (Sabater+, 2008)
J/A+A/532/A117 : AMIGA VIII. Flux ratio asymmetry parameter (Espada+, 2011)
J/A+A/534/A102 : AMIGA IX. Molecular gas properties (Lisenfeld+, 2011)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- CIG CIG (VII/82) number (K73 NNNN in Simbad)
6- 10 I5 km/s HV ? Heliocentric velocity
11- 12 A2 --- --- [.0 ]
14- 16 I3 km/s e_HV ? Error in the heliocentric velocity
17- 18 A2 --- --- [.0 ]
20- 21 I2 --- r_HV ? Source of velocity, in refs.dat file
23- 27 F5.1 Mpc Dist ? Distance
29- 32 F4.1 --- TT Morphological type (RC3)
34- 36 F3.1 --- e_TT ? Error in the morphological type
38 I1 --- IA Degree of optical asymmetry (1)
40 I1 --- r_TT [1/5] Data used for the morphological
classification (2)
42- 47 F6.3 mag Bmag B-band magnitude from HyperLeda
49- 53 F5.3 mag e_Bmag Error in B-band magnitude from HyperLeda
55- 59 F5.3 mag Ag Galactic extinction
61- 65 F5.3 mag Ai Internal extinction
67- 71 F5.3 mag Ak ? K-correction in the B-band
73- 78 F6.3 mag Bmagc ? Corrected magnitude in the B-band
80- 84 F5.2 [Lsun] logLB ? Logarithm of the optical luminosity in
the B-band
86- 90 F5.2 arcmin amaj Major axis of the galaxy at the isophotal
level 25 mag/arcsec2 in the B-band
92- 96 F5.2 arcmin bmin Minor axis of the galaxy at the isophotal
level 25 mag/arcsec2 in the B-band
98-102 F5.1 kpc amajp ? Physical major axis in kpc
104-108 F5.1 kpc bminp ? Physical minor axis in kpc
110-113 F4.1 deg i Galaxy inclination
115 I1 --- St [0/1] Code 1 when the galaxy is studied in
this paper (table2), and 0 otherwise (3)
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Note (1): Degree of optical asymmetry as follows:
0 = assigned if no relevant signs of distortions are visible
1 = corresponds to galaxies seen in the images as asymmetric, lopsided,
warped or distorted, with an integral sign shape or tidal feature
(tail, bridge, shell)
2 = was assigned if the galaxy was identified as a pair in Verley et al.
(2007, Cat. J/A+A/470/505) and/or in NED, or if the galaxy looks like a
merger or superposition of two galaxies
Note (2): Data used for the morphological classification:
1 = Visual classification using CCD images, either own data or from public
archives, including the SDSS
2 = Visual classification using POSS2
3 = Morphology has been compiled from HyperLeda database
4 = For CIG galaxies with Vhel < 1000 km/s, morphological types have been
compiled from the bibliography and the mean value used.
5 = Morphology has been compiled from NED database
Note (3): The sample selection is explained in Sect.3 of the paper.
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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- 4 I4 --- CIG CIG (VII/82) number (K73 NNNN in Simbad)
6- 11 F6.3 mag gmag g-band model magnitude from SDSS-DR8
13- 17 F5.3 mag gAg Galactic extinction in the g-band from SDSS-DR8
19- 24 F6.3 mag gKcorr K-correction in the g-band
26- 32 F7.3 mag gMAG Absolute magnitude in the g-band
34- 39 F6.3 mag rmag r-band model magnitude from SDSS-DR8
41- 45 F5.3 mag rAg Galactic extinction in the r-band from SDSS-DR8
47- 51 F5.3 mag rKcorr K-correction in the r-band
53- 59 F7.3 mag rMAG Absolute magnitude in the r-band
61- 65 F5.3 mag Ai(g-r) Internal extinction correction in the (g-r) color
67- 72 F6.3 mag g-r Corrected (g-r) rest-frame color index
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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 number
4- 22 A19 --- BibCode BibCode
24- 46 A23 --- Aut Author's name
48-121 A74 --- Com Comments
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Historical notes:
* 23-Mar-2012: table2 not yet available
* 27-Mar-2012: New table1 and table2
* 16-Mar-2012: New table1
* 26-Oct-2012: New table1 (more precision on Ai, Ak and Bmagc)
Acknowledgements:
Mirian Fernandez Lorenzo, mirian(at)iaa.es
References:
Leon et al., Paper I 2003A&A...411..391L 2003A&A...411..391L, Cat. J/A+A/411/391
Sulentic et al., Paper II 2006A&A...449..937S 2006A&A...449..937S Cat. J/A+A/449/937
Lisenfeld et al., Paper III 2007A&A...462..507L 2007A&A...462..507L, Cat. J/A+A/462/507
Verley et al., Paper IV 2007A&A...470..505V 2007A&A...470..505V, Cat. J/A+A/470/505
Verley et al., Paper V 2007A&A...472..121V 2007A&A...472..121V, Cat. J/A+A/472/121
Leon et al., Paper VI 2008A&A...485..475L 2008A&A...485..475L, Cat. J/A+A/485/475
Sabater et al., Paper VII 2008A&A...486...73S 2008A&A...486...73S, Cat. J/A+A/486/73
Espada et al., Paper VIII 2011A&A...532A.117E 2011A&A...532A.117E, Cat. J/A+A/532/A117
Lisenfeld et al., Paper IX 2011A&A...534A.102L 2011A&A...534A.102L, Cat. J/A+A/534/A102
(End) Patricia Vannier [CDS] 16-Feb-2012