J/A+AS/139/1 HI in Byurakan blue compact galaxies (Thuan+, 1999)
HI observations of blue compact galaxies from the
first and second Byurakan surveys.
Thuan T.X., Lipovetsky V.A., Martin J.-M., Pustilnik S.A.
<Astron. Astrophys. Suppl. Ser. 139, 1 (1999)>
=1999A&AS..139....1T 1999A&AS..139....1T
ADC_Keywords: Galaxies, radio ; H II regions ; H I data
Keywords: galaxies: compact - galaxies: ISM - galaxies: starburst -
radio lines: galaxies - radio lines: ISM
Abstract:
We present the results of a neutral hydrogen survey of 79 galaxies
from a statistical sample of 88 Blue Compact Galaxies (BCGs) selected
from the First and Second Byurakan objective prism surveys to have a
HII region-like spectrum, an equivalent width of the [O III]
λ5007 line larger than ∼50Å, and a velocity ≤6000km/s. The
detection rate for the statistical sample is 74%. HI masses range
between 4x107M☉ and 5x109M☉ with the HI mass
distribution peaking at 3x108M☉. The full width at
half-maximum of the HI profile varies between ∼30km/s and 160km/s,
with a mean of ∼92km/s. These small widths are characteristic of dwarf
galaxies. For comparison, we have also observed an additional 92 BCGs
with weaker star formation and/or larger distances, and/or interesting
astrophysical properties. These in general have larger widths
and HI masses.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 120 79 HI detections of BCGs
table2.dat 120 54 Uncertain and confused HI detections
table3.dat 57 37 HI non-detections of BCGs
notes.dat 81 315 Indiviudal notes
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See also:
VII/172 : First Byurakan Survey (FBS) (Markarian+, 1989)
J/ApJ/511/639 : Abundances in blue comact galaxies (Izotov+, 1999)
J/A+AS/139/1 : HI in Byurakan blue comact galaxies (Thuan+, 1999)
J/A+AS/147/169 : Accurate positions of 2978 SBS objects (Bicay+, 2000)
J/A+A/373/24 : Blue compact galaxies from SBS (Pustilnik+ 2001)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- BCG IAU name (1)
9- 10 A2 --- m_Name Multiplicity index on Name
11- 12 A2 --- n_Name [+* a] +: BCGs which are in the statistical
sample
*: galaxies non-confused in table2.dat
a: See Note (1)
14- 19 A6 --- Name Other name (2)
21- 22 I2 h RAh Right ascension (1950)
24- 25 I2 min RAm Right ascension (1950)
27- 30 F4.1 s RAs Right ascension (1950)
32 A1 --- DE- Declination sign (1950)
33- 34 I2 deg DEd Declination (1950)
36- 37 I2 arcmin DEm Declination (1950)
39- 40 I2 arcsec DEs Declination (1950)
42- 44 I3 arcsec Dmaj ? Holmberg major diameter to the limiting
surface brightness of B=26.5mag/arcsec2
45 A1 --- --- [x]
46- 48 I3 arcsec Dmin ? Holmberg minor diameter to the limiting
surface brightness of B=26.5mag/arcsec2
49 A1 --- n_Dmaj [e] Note on Size (3)
51- 53 I3 deg PA [-90/90]? Position angle of the major axis
of the galaxy measured eastward from north
55- 59 I5 km/s V(HI) Heliocentric HI velocity
61- 62 I2 km/s e_V(HI) rms uncertainty on V(HI)
64- 68 F5.1 Mpc Dist Distance to the galaxy
70- 72 I3 km/s W50 Velocity width of the HI profile at 50% of
the peak
74- 76 I3 km/s e_W50 rms uncertainty on W50
78- 80 I3 km/s W20 Velocity width of the HI profile at 20% of
the peak
82- 84 I3 km/s e_W20 rms uncertainty on W20
86- 90 F5.2 Jy.km/s FluxObs ? Observed integrated flux density
92- 95 F4.2 Jy.km/s e_FluxObs ? rms uncertainty on FluxObs
97-101 F5.2 Jy.km/s FluxCor ? HI flux density corrected for telescope
beam size
103-106 F4.2 Jy.km/s e_FluxCor ? rms uncertainty on FluxCor
108-112 F5.2 [solMass] logM(HI) Hydrogen mass
114-119 A6 --- Run Telescope used and year of observation (4)
120 A1 --- Note [*] *: Note in notes.dat file
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Note (1): In table2.dat, UGC 6309 is not a BCG and has been observed to check
for confusion with BCG 1114+517 = Mk 1445
In the original table, the name in the BCG column was "1114+5145"
(SBS 1114+5145), and transformed in blanks here.
Note (2): Mk: Markarian et al., 1989, Cat. VII/172
UM: Michigan, Salzer et al., 1989ApJS...70..447S 1989ApJS...70..447S
CG: Case, Pesh et al., 1991ApJS...76.1043P 1991ApJS...76.1043P
SB: Second Byurakan Survey, Markarian et al., 1983Afz....19...29M 1983Afz....19...29M
Stepanian et al., 1993BSAO...35...15S 1993BSAO...35...15S, 1993BSAO...35...24S 1993BSAO...35...24S
1993BSAO...35...32S 1993BSAO...35...32S, 1993BSAO...35...38S 1993BSAO...35...38S
Note (3): Size are mainly derived from CCD surface photometry (Lipovetsky et
al., 1999, in prep.; Kniazev et al., 1995, priv. comm.).
When CCD data was not available, Holmberg diameters were derived from
measurements on the Palomar Sky Survey blue prints and the relation
obtained by least-square fitting to the diameter data from a
subsample of 48 of our BCGs with CCD photometry:
dH(arcsec)=2.53dPSS(arcsec)+7.4".
Diameters derived in this way are marked by the letter e.
Note (4): Telescope used (G: Green Bank, N: Nancay) and the last two digits
of the year of observation
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- BCG IAU name
9 A1 --- m_Name Multiplictiy index on Name
10 A1 --- n_Name [+] +: BCGs which are in the statistical sample
12- 17 A6 --- Name Other name (1)
19- 20 I2 h RAh Right ascension (1950)
22- 23 I2 min RAm Right ascension (1950)
25- 28 F4.1 s RAs Right ascension (1950)
30 A1 --- DE- Declination sign (1950)
31- 32 I2 deg DEd Declination (1950)
34- 35 I2 arcmin DEm Declination (1950)
37- 38 I2 arcsec DEs Declination (1950)
40- 44 I5 km/s Vopt Heliocentric optical velocity (2)
46- 48 F3.1 mJy RMS rms noise of the spectrum
50- 56 A7 --- Run Telescope used and year of observation (3)
57 A1 --- Note [*] *: Note detailed in notes.dat file
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Note (1): Mk: Markarian et al., 1989, Cat. VII/172
UM: Michigan, Salzer et al., 1989ApJS...70..447S 1989ApJS...70..447S
CG: Case, Pesh et al., 1991ApJS...76.1043P 1991ApJS...76.1043P
SB: Second Byurakan Survey, Markarian et al., 1983Afz....19...29M 1983Afz....19...29M
Stepanian et al., 1993BSAO...35...15S 1993BSAO...35...15S, 1993BSAO...35...24S 1993BSAO...35...24S
1993BSAO...35...32S 1993BSAO...35...32S, 1993BSAO...35...38S 1993BSAO...35...38S
Note (2): All optical velocities have been obtained with the 6m telescope IPCS
with a typical accuracy of 100-150km/s. They come either from
Stepanian et al., (1993BSAO...35...[15-38]S), or Lipovetsky et al.'s
unpublished catalog of BCGs.
Note (3): Telescope used (G: Green Bank, N: Nancay) and the last two digits
of the year of observation
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- BCG IAU name
9- 10 A2 --- m_BCG Multiplictiy index on BCG
12- 81 A70 --- Note Text of the note
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(End) Patricia Bauer [CDS] 28-Oct-1999