| Issue |
A&A
Volume 379, Number 1, November III 2001
|
|
|---|---|---|
| Page(s) | 82 - 89 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20011302 | |
| Published online | 15 November 2001 | |
H2, HD, and CO at the edge of 30 Dor in the LMC: The line of sight to Sk-69 246*
Sternwarte, Universität Bonn, Auf dem Hügel 71, 53121 Bonn, Germany
Corresponding author: H. Bluhm, hbluhm@aibn44.astro.uni-bonn.de
Received:
13
June
2001
Accepted:
10
September
2001
Fuse and IUE observations of Sk-69 246, a WN 6 star to the north of 30 Dor, reveal the existence of LMC interstellar gas in at least 3 velocity components. In one of these components Fuse spectra show strong absorption by molecular hydrogen with a column density of 
(H
.
We investigate the physical conditions in this cloud, which is probably located near the Hii region surrounding Sk-69 246.
HD and CO with column densities of 
and 13.0, respectively, are detected.
The N(CO)-to-N(H2) ratio is consistent with values found in the Galaxy.
From the population of the rotational levels of H2 we derive a gas temperature of 72 K and a radiation field 
erg s-1 cm-3 at 1000 Å.
The fractional abundance 
is rather high for an 
.
Key words: galaxies: individual: LMC / ISM: abundances / ISM: molecules / ultraviolet: ISM
© ESO, 2001
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