J/A+A/534/A102 AMIGA IX. Molecular gas properties (Lisenfeld+, 2011)
The AMIGA sample of isolated galaxies.
IX. Molecular gas properties.
Lisenfeld U., Espada D., Verdes-Montenegro L., Kuno N., Leon S., Sabater J.,
Sato N., Sulentic J., Verley S., Min Y.
<Astron. Astrophys. 534, A102 (2011)>
=2011A&A...534A.102L 2011A&A...534A.102L
ADC_Keywords: Galaxy catalogs ; Galaxies, radio ; Carbon monoxide
Keywords: galaxies: evolution - galaxies: interactions - galaxies: ISM -
radio lines: ISM - radio lines: galaxies - surveys
Abstract:
We characterize the molecular gas content (ISM cold phase) using CO
emission of a redshift-limited subsample of isolated galaxies from the
AMIGA (Analysis of the interstellar Medium of Isolated GAlaxies)
project in order to provide a comparison sample for studies of
galaxies in different environments.
We present the 12CO(1-0) data for 273 AMIGA galaxies, most of them
(n=186) from our own observations with the IRAM 30m and the FCRAO 14m
telescopes and the rest from the literature. We constructed a
redshift-limited sample containing galaxies with 1500km/s<v<5000km/s
and excluded objects with morphological evidence of possible
interaction. This sample (n=173) is the basis for our statistical
analysis. It contains galaxies with molecular gas masses, MH2, in
the range of ∼108-1010M☉. It is dominated, both in absolute
number and in detection rate, by spiral galaxies of type T=3-5
(Sb-Sc). Most galaxies were observed with a single pointing towards
their centers. Therefore, we performed an extrapolation to the total
molecular gas mass expected in the entire disk based on the assumption
of an exponential distribution. We then studied the relationships
between MH2 and other galactic properties.
Description:
File "table1.dat" contains the CIG number, and general data for the
total CO sample.
File "tale4.dat" contains the CIG number, and the velocity integrated
12CO(1-0) intensities, line width and central velocities for galaxies
newly observed.
File "tale5.dat" contains the CIG number and the molecular gas mass
for the total CO sample.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 47 273 General data for the total CO sample
table4.dat 43 285 Velocity integrated 12CO(1-0) line intensities,
mean velocities and line widths
table5.dat 26 273 Molecular gas mass
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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)
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-catalog galaxy number
6- 8 I3 Mpc Dist Distance (based on H0=75km/s/Mpc)
10- 14 I5 km/s Vel Recession velocity
16- 20 F5.2 arcmin D25 Isophotal major diameter at the isophotal
level 25mag/arcsec2
22- 23 I2 deg i Inclination from LEDA
25- 26 I2 --- TT Morphological type, given in the RC3
numerical scale
28 I1 --- Mi Code for morphological signature of a possible
interaction (1)
30- 34 F5.2 [Lsun] log(LB) Decimal logarithm of the blue luminosity in
units of bolometric solar luminosity
36 A1 --- l_log(LFIR) Limit flag on log(LFIR) (2)
37- 41 F5.2 [Lsun] log(LFIR) ?=- Decimal logarithm of far-infrared luminosity
in units of bolometric solar luminosity
43- 47 F5.2 [Lsun] log(LK) ?=- Decimal logarithm of K-band luminosity
from 2MASS in units of K-band solar luminosity
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Note (1): Code for interaction as follows:
0 = No signs of large distortions which cannot be clearly explained
by e.g. dust
1 = At least one of the following signs of possible interaction:
asymmetric, lopsided, distorted, confirmed pair in the Nasa
Extragalactic Database (NED) or in Verley et al. (2007,
Cat. J/A+A/472/121), integral sign shape, warp, tidal features
(tail, bridge, shell)
2 = Merger-like morphology or superposition of two galaxies
Note (2): Upper limit code for FIR luminosity, LFIR
if <, LFIR is an upper limit, else LFIR is a detection
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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- 4 I4 --- CIG CIG-catalog galaxy number
6 A1 ---- u_CIG [*] Code for data quality:
* means a marginal detections
8- 10 I3 arcsec oRA RA offset from the center
12- 14 I3 arcsec oDE Declination offset from the center
16- 20 F5.2 mK rms Root mean square noise for a velocity
resolution of 10.6km/s (IRAM), 13.1km/s (FCRAO)
22 A1 --- l_ICO Limit flag on ICO (1)
23- 27 F5.2 K.km/s ICO Velocity integrated CO line temperature (Tmb)
29- 32 F4.2 K.km/s e_ICO ?=- rms uncertainty on ICO
34- 37 I4 km/s VCO ?=- Mean velocity of the CO line
39- 41 I3 km/s WCO ?=- Zero line-width of the CO spectrum
43 I1 --- Tel [1/2] Radio telescope code: 1=IRAM, 2=FCRAO
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Note (1): Upper limit code for ICO:
if <, ICO is an upper limit, else ICO is a detection
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- CIG CIG-catalog galaxy number
6 I1 --- Det [0/2] Detection code (1)
8- 11 F4.2 [Msun] MH2c ?=0 Decimal logarithm of molecular gas mas
towards the central pointing (2)
13- 16 F4.2 [Msun] MH2m ?=0 Decimal logarithm of mapped molecular gas
mass (2)
18- 22 F5.2 [Msun] MH2e ?=0 Decimal logarithm of total molecular gas
mass, extrapolated from the central value (2)
24 I1 --- Tel [1/5] Radio-telescope code (3)
26 I1 --- Ref [1/6] Bibliographic code (4)
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Note (1): Detection code for the molecular mass as follows:
0 = Detection
1 = Upper limit
2 = Marginal detection
Note (2): Zero indicates a blank value (no measurement taken).
Note (3): Radio telescope code as follows:
1 = IRAM
2 = FCRAO
3 = SEST
4 = Onsala
5 = NRAO Kitt-Peak
Note (4): Bibliographic code as follows:
1 = This work
2 = Young et al. (1995ApJS...98...219J)
3 = Braine & Combes (1993A&A...269....7B 1993A&A...269....7B)
4 = Sauty et al. (2003A&A...411..318S 2003A&A...411..318S)
5 = Elfhag et al. (1996, Cat. J/A+AS/115/439)
6 = Sage (1993A&A...272..123)
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Acknowledgements:
J.D. Santander-Vela, jdsant(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
Fernandez Lorenzo et al., Paper X 2012A&A...540A..47F 2012A&A...540A..47F, Cat. J/A+A/540/A47
(End) U. Lisenfeld [UGR], Patricia Vannier [CDS] 11-Aug-2011