| Issue |
A&A
Volume 416, Number 1, March II 2004
|
|
|---|---|---|
| Page(s) | 119 - 123 | |
| Section | Extragalactic astronomy | |
| DOI | https://doi.org/10.1051/0004-6361:20031755 | |
| Published online | 26 February 2004 | |
An extragalactic HII region in the Virgo cluster*
1
Universitá degli Studi di Milano-Bicocca, P.zza della Scienza 3, 20126 Milano, Italy e-mail: Giuseppe.Gavazzi@mib.infn.it
2
Laboratoire d'Astrophysique de Marseille, BP 8, Traverse du Siphon, 13376 Marseille, France e-mail: jorge.iglesias;alessandro.boselli@oamp.fr
Corresponding author: L. Cortese, Luca.Cortese@mib.infn.it
Received:
21
July
2003
Accepted:
2
December
2003
We present spectroscopic observations for six emission-line objects projected onto the Virgo cluster.
These sources have been selected from narrow band (
) images showing faint
detectable continuum emission and 
.
Five of these sources result 
emitters at 
, while one
122603+130724 is confirmed to be an HII region belonging to the Virgo cluster.
This point-like source has a recessional velocity of ~
,
and is associated with the giant galaxy VCC 873 (NGC 4402).
It has a higher luminosity, star formation rate and metallicity than the extragalactic HII region recently discovered near the Virgo galaxy VCC 836 by
Gerhard et al. ([CITE]).
Key words: galaxies: distances and redshifts / galaxies: clusters: individuals: Virgo / galaxies: abundances / ISM: HII regions
© ESO, 2004
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