Issue |
A&A
Volume 381, Number 2, JanuaryII 2002
|
|
---|---|---|
Page(s) | 566 - 570 | |
Section | The Sun | |
DOI | https://doi.org/10.1051/0004-6361:20011502 | |
Published online | 15 January 2002 |
Molecular hydrogen gas at high-velocity associated with the Monoceros Loop SNR
1
Experimental Astrophysics Group, Space Sciences Laboratory, UC Berkeley, Berkeley, CA 94720, USA
2
Center for Astrophysics and Space Astronomy, University of Colorado, Boulder, CO 80309, USA
Corresponding author: B. Y. Welsh, bwelsh@ssl.berkeley.edu
Received:
31
August
2001
Accepted:
15
October
2001
We present Far Ultraviolet Spectroscopic
Explorer () observations of
molecular hydrogen (H2) gas
observed at a high-velocity
of
km s-1 towards the star HD 47240
which lies just behind the Monoceros Loop Supernova
Remnant at a distance of ~1800 pc. These
absorption features have been detected in six lines of the
rotational level, with an equivalent molecular
hydrogen column density of log
cm-2.
The observed data are best fit with a single excitation temperature,
Tex, of ~1000 K, which when
comparised to temperatures generally found for
low J-levels is unusually high for interstellar
H2.
The molecular fraction in this HV cloud has a very low value
of log
, which is similar to that found for HV clouds
in the galactic halo.
Key words: ISM: supernova remnants / ISM: molecules
© ESO, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.