Issue |
A&A
Volume 429, Number 3, January III 2005
|
|
---|---|---|
Page(s) | L51 - L54 | |
Section | Letters | |
DOI | https://doi.org/10.1051/0004-6361:200400111 | |
Published online | 05 January 2005 |
Letter to the Editor
The strange case of a sub-DLA with very little HI
1
Kapteyn Astronomical Institute, University of Groningen, Post Bag 800, 9700 AV Groningen, The Netherlands e-mail: nissim@astro.rug.nl
2
National Centre for Radio Astrophysics, Post Bag 3, Ganeshkhind Pune – 411 007, India e-mail: chengalu@ncra.tifr.res.in
Received:
5
November
2004
Accepted:
26
November
2004
We report a deep search for HI 21cm emission from
the sub-DLA toward PG1216+069 with the Giant
Metrewave Radio Telescope. No emission was detected and
our
upper limit on the mass of any associated galaxy
is
, nearly 3
orders of magnitude less than
. The
absorber is thus the most extreme known
deviation from the standard paradigm in which high column
density quasar absorption lines arise in the disks of
gas-rich galaxies.
Key words: galaxies: evolution / galaxies: formation / galaxies: ISM / cosmology: observations / radio lines: galaxies
© ESO, 2005
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