J/A+AS/133/29 Molecular line survey towards UC HII (Hatchell+ 1998)
A survey of molecular line emission towards ultracompact HII regions
Hatchell J., Thompson M.A., Millar T.J., Macdonald G.H.
<Astron. Astrophys. Suppl. Ser. 133, 29 (1998)>
=1998A&AS..133...29H 1998A&AS..133...29H (SIMBAD/NED BibCode)
ADC_Keywords: H II regions ; Radio lines
Keywords: ISM: molecules - ISM: clouds - ISM: HII regions - radio line: ISM -
stars: formation - molecular processes
Description:
The tables give identifications for molecular lines detected in the
survey of ultracompact HII regions. The survey covers 14 sources:
G5.89, G9.62, G10.30, G10.47, G12.21, G13.87, G29.96, G31.41, G34.26,
G43.89, G45.12, G45.45, G45.47, and G75.78. For each source, we
observed up to ten 1∼GHz bands between 200 and 350∼GHz, covering lines
of more than 30 species including multiple transitions of CO isotopes,
CH3OH, CH3CCH, CH3CN and HCOOCH_3, and sulphuretted molecules.
The tables give the measured line parameters of observed frequency
ν(obs), peak temperature TR* and linewidth Δν1/2 for
each line. Each independent detection of a particular line is given.
The species, transition, rest frequency and upper level energy
(Eu/k) are given for identified lines.
Objects:
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RA (2000) DE Designation(s)
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18 06 14.9 -20 31 40 G9.62 = [WC89] 009.62+0.19
18 08 56.0 -20 05 54 G10.30 = [WC89] 010.30-0.15
18 08 38.3 -19 51 50 G10.47 = [WC89] 010.47+0.03
18 12 39.6 -18 24 21 G12.21 = [WC89] 012.21-0.10
18 14 35.5 -16 45 38 G13.87 = [HC96] G13.87+0.28
18 46 03.8 -02 39 22 G29.96 = [WC89] 029.96-0.02
18 47 34.5 -01 12 43 G31.41 = [WC89] 031.41+0.31
18 53 18.4 +01 14 58 G34.26 = [HC96] G34.26+0.15
19 14 26.1 +09 22 34 G43.89 = [WC89] 043.89-0.78
19 13 27.8 +10 53 37 G45.12 = [WC89] 045.12+0.13
19 12 00.1 +11 04 00 G45.45 = [WC89] 045.45+0.06
19 14 25.5 +11 09 26 G45.47 = [WC89] 045.47+0.05
20 21 44.0 +37 26 40 G75.78 = [WC89] 075.78+0.34
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tab10-17.dat 94 858 Molecular lines observed toward 8 UC HII
table18.dat 90 72 Molecular lines observed towards the line poor sources
tables.tex 102 1438 LaTeX version of the tables
tables.ps 72 2697 PostScript version of the tables
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See also:
J/A+AS/120/283 : Water maser features in UC HII regions (Hofner+ 1996)
Byte-by-byte Description of file: tab10-17.dat table18.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Name HII region name
7 A1 --- n_Name [*] Note for G34.26 observations (1)
9- 15 F7.3 GHz nuObs Observed centre frequency of line
17- 23 F7.2 K TR* Peak brightness temperature of line
25- 28 F4.1 MHz Dnu1/2 ? FWHM of line
30- 40 A11 --- Species Species identified for transition
42- 64 A23 --- Trans Quantum numbers of transition
66- 74 F9.5 GHz nuRest ? Rest frequency of transition
76- 81 F6.2 K Eu/k ? Upper state energy of transition divided
by Boltzmann constant
83- 95 A13 --- Notes Notes (2)
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Note (1): *: Molecular lines observed towards G34.26 at offset positions. The
lines before the break were observed at (0,20) offset from the
centre position and the lines after the break were observed
at (20,0) offset from the centre position.
Note (2): This column gives further information about the line in the form of
one or more codes.
blend: blended line
self-abs: self-absorbed line
sba: line which has a sideband ambiguity
sl-blend: when it has been possible to extract lines from blends
Some HCOOCH3, C2H5OH and H2CCHCN lines are blends of two or
transitions of the same frequency and are indicated as such by blend.
*: All possibilities for uncertain detections are given, with
the most likely indicated by an asterisk.
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Acknowledgements: Jennifer Hatchell
(End) Patricia Bauer [CDS] 10-Aug-1998