E-resources
Peer reviewed
Open access
-
Fynbo, J. P. U.; Christensen, L.; Geier, S. J.; Heintz, K. E.; Krogager, J.-K.; Ledoux, C.; Milvang-Jensen, B.; Møller, P.; Vejlgaard, S.; Viuho, J.; Östlin, G.
Astronomy and astrophysics (Berlin), 11/2023, Volume: 679Journal Article
We report on further observations of the field of the quasar Q 1218+0832. Geier et al. (2019, A&A, 625, L9) presented the discovery of the quasar resulting from a search for quasars reddened and dimmed by dust in foreground damped Lyman- α absorbers (DLAs). The DLA is remarkable by having a very large H I column density close to 10 22 cm −2 . Its dust extinction curve shows the 2175 Å bump known from the Local Group. It also shows absorption from cold gas exemplified by C I and CO molecules. For this paper, we present narrow-band observations of the field of Q 1218+0832 and also use an archival Hubble Space Telescope (HST) image to search for the galaxy counterpart of the DLA. No emission from the DLA galaxy is found in either the narrow-band imaging or in the HST image. In the HST image, we could probe down to an impact parameter of 0.3 arcsec and a 3- σ detection limit of 26.8 mag per arcsec 2 . In the narrow-band image, we probed down to a 0 arcsec impact parameter and detected nothing down to a 3- σ detection limit of about 3 × 10 −17 erg s −1 cm −2 . We did detect a bright Lyman- α emitter 59 arcsec south of Q 1218+0832 with a flux of 3 × 10 −16 erg s −1 cm −2 . We conclude that the DLA galaxy must be located at a very small impact parameter (< 0.3 arcsec, 2.5 kpc) or it is optically dark. Also, the DLA galaxy most likely is part of a galaxy group.
Author
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.