J/A+AS/131/77 Catalogue of HI maps of galaxies. II. (Martin 1998)
Catalogue of HI maps of galaxies. II. Analysis of the data
Martin M.C.
<Astron. Astrophys. Suppl. Ser. 131, 77 (1998)>
=1998A&AS..131...77M 1998A&AS..131...77M (SIMBAD/NED BibCode)
ADC_Keywords: Galaxy catalogs ; Galaxies, radio ; H I data
Keywords: galaxies: ISM; structure - radio lines: galaxies
Abstract:
We use some of the maps of the catalogue presented in Paper I (Cat.
J/A+AS/131/73) to provide some evidence for global conditions that
must be fulfilled by the galaxies to have extended hydrogen. For this
purpose, we tried to find possible connections between the HI gas
extension and other properties of the galaxies (morphological type,
surface brightness, gas density, etc.). With isophotal hydrogen
diameters of a large sample, we could observe that optically smaller
galaxies seem to have greater relative HI extensions. By means of the
relation with the apparent HI surface density, we found an expression
that should provide a rough estimate of the gas extension. With
respect to the dependence on morphological type, we could not find any
significant correlation either for the real HI surface density or the
relative gas extension. Nevertheless, whereas for spiral and irregular
galaxies the real HI surface density exhibits a broad range of values,
the values are rather lower for elliptical and S0 galaxies.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1a.dat 98 116 General parameters
table1b.dat 37 144 HI observations
refs.dat 123 471 References
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See also:
J/A+AS/131/73 : Catalogue of HI maps of galaxies. I. (Martin 1998)
Byte-by-byte Description of file: table1a.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Galaxy name
11- 20 A10 --- Names Alternative name of the galaxy
22- 23 I2 h RAh Right ascension (1950)
24- 25 I2 min RAm Right ascension (1950)
26- 29 F4.1 s RAs Right ascension (1950)
30 A1 --- DE- Declination sign
31- 32 I2 deg DEd Declination (1950)
33- 34 I2 arcmin DEm Declination (1950)
35- 36 I2 arcsec DEs Declination (1950)
38- 43 F6.2 arcmin Do The corrected optical diameter Do, from LEDA
45- 47 A3 --- Type [DSELICBRM ] Morphological description (1)
48- 49 I2 --- Mtype [-5/10]? Morphological type code
51- 52 A2 deg Incl Inclination
54- 59 F6.2 Mpc Dist Distance (see text)
60 A1 --- n_Dist [-] -: indicates an interval
61- 64 F4.1 Mpc Dist2 ? Second distance when interval (see text)
66- 69 F4.1 kpc Dlin Linear diameter from corrected optical
diameter Do and distance
70 A1 --- n_Dlin [-] -: indicates an interval
71- 74 F4.1 kpc Dlin2 ? Second linear diameter when interval
76- 81 F6.3 10+9solMass MHI HI mass
82 A1 --- n_MHI [-] -: indicates an interval
83- 87 F5.2 10+9solMass MHI2 ? Second HI mass when interval
89- 93 F5.2 10+21/cm2 SDHIa Apparent HI surface density
95- 98 F4.2 10+20/cm2 SDHIr Real HI surface density
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Note (1): S = Spiral
E = Eliptical
L = Lenticular
I = Irregular
C = Compact
B = Bar
R = Ring
M = Multiple, possible interaction
D = Dwarf
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Byte-by-byte Description of file: table1b.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Galaxy name
11- 18 A8 --- Tel Radiotelescope used in the observation
20- 28 A9 arcmin HPBW Spatial resolution of the maps: half power
beam width or synthesized beam
30- 33 F4.1 --- DHI/Do Ratio between HI and optical isophotal diameters
35- 37 I3 --- r_DHI/Do Reference (in refs.dat file)
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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- 3 I3 --- Ref Reference number
5- 23 A19 --- BibCode Simbad bibcode
25-123 A99 --- Text Author names and complete reference
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Acknowledgements: Maria Cristina Martin
(End) Patricia Bauer [CDS] 31-Mar-1998