| Issue |
A&A
Volume 372, Number 3, June IV 2001
|
|
|---|---|---|
| Page(s) | 820 - 823 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20010592 | |
| Published online | 15 June 2001 | |
21-cm H I emission from the Damped Lyman-
absorber SBS 1543+593
1
Princeton University Observatory, Princeton, NJ 08544, USA
2
Max-Plank-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
3
Depto. de Astronomía, Apdo. Postal 144, Guanajuato, Gto. 36000, Mexico
Corresponding author: D. V. Bowen, dvb@astro.princeton.edu
Received:
13
March
2001
Accepted:
24
April
2001
We detect 21-cm emission from the Low Surface Brightness (LSB) galaxy
SBS 1543+593, which gives rise to a Damped-Lyα (DLyα)
absorption line in
the spectrum of the background QSO HS 1543+5921 (
). We
obtain an accurate measure of the velocity of the H I gas in the LSB
galaxy, 
km s-1, and derive a mass of
. We compare 
with limits obtained towards two other 
DLyα
systems, and show that SBS 1543+593 would not have been detected. Hence LSB
galaxies similar to SBS 1543+593 can be responsible for DLyα systems
at even modest redshifts without being detectable from their 21-cm
emission.
Key words: galaxies: individual: SBS 1543+593 / radio lines: ISM / quasars: absorption lines
© ESO, 2001
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.