Volume 416, Number 1, March II 2004
|Page(s)||119 - 123|
|Published online||26 February 2004|
An extragalactic HII region in the Virgo cluster*
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;email@example.com
Corresponding author: L. Cortese, Luca.Cortese@mib.infn.it
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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