An extragalactic HII region in the Virgo cluster

被引：37
作者：
Cortese, L
Gavazzi, G
Boselli, A
Iglesias-Paramo, J
机构：
[1] Univ Studi Milano Bicocca, I-20126 Milan, Italy
[2] Lab Astrophys Marseille, F-13376 Marseille, France
来源：
ASTRONOMY & ASTROPHYSICS | 2004年 / 416卷 / 01期
关键词：
galaxies : distances and redshifts; galaxies : clusters : individuals : Virgo; galaxies : abundances; ISM : HII regions;
D O I：
10.1051/0004-6361:20031755
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present spectroscopic observations for six emission-line objects projected onto the Virgo cluster. These sources have been selected from narrow band (Halpha + [NII]) images showing faint detectable continuum emission and EW > 100 Angstrom. Five of these sources result [O III]lambda5007 emitters at z similar to 0.31, 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 similar to200 km s(-1), 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. (2002).
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页码：119 / 123
页数：5
相关论文
共 31 条
[1]   The kinematics of the planetary nebulae in the outer regions of NGC 4406 [J].
Arnaboldi, M ;
Freeman, KC ;
Mendez, RH ;
Capaccioli, M ;
Ciardullo, R ;
Ford, H ;
Gerhard, O ;
Hui, X ;
Jacoby, GH ;
Kudritzki, RP ;
Quinn, PJ .
ASTROPHYSICAL JOURNAL, 1996, 472 (01) :145-&
[2]   Narrowband imaging in [O III] and Hα to search for intracluster planetary nebulae in the Virgo Cluster [J].
Arnaboldi, M ;
Freeman, KC ;
Okamura, S ;
Yasuda, N ;
Gerhard, O ;
Napolitano, NR ;
Pannella, M ;
Ando, H ;
Doi, M ;
Furusawa, H ;
Hamabe, M ;
Kimura, M ;
Kajino, T ;
Komiyama, Y ;
Miyazaki, S ;
Nakata, F ;
Ouchi, M ;
Sekiguchi, M ;
Shimasaku, K ;
Yagi, M .
ASTRONOMICAL JOURNAL, 2003, 125 (02) :514-524
[3]   THE LUMINOSITY FUNCTION OF THE COMA CLUSTER CORE FOR -25-LESS-THAN-M(R)LESS-THAN-9.4 [J].
BERNSTEIN, GM ;
NICHOL, RC ;
TYSON, JA ;
ULMER, MP ;
WITTMAN, D .
ASTRONOMICAL JOURNAL, 1995, 110 (04) :1507-&
[4]   Hα surface photometry of galaxies in the Virgo cluster -: III.: Observations with INT and NOT 2.5 m telescopes [J].
Boselli, A ;
Iglesias-Páramo, J ;
Vílchez, JM ;
Gavazzi, G .
ASTRONOMY & ASTROPHYSICS, 2002, 386 (01) :134-139
[5]   THE GALACTIC FOUNTAIN OF HIGH-VELOCITY CLOUDS [J].
BREGMAN, JN .
ASTROPHYSICAL JOURNAL, 1980, 236 (02) :577-591
[6]   THE RELATIONSHIP BETWEEN INFRARED, OPTICAL, AND ULTRAVIOLET EXTINCTION [J].
CARDELLI, JA ;
CLAYTON, GC ;
MATHIS, JS .
ASTROPHYSICAL JOURNAL, 1989, 345 (01) :245-256
[7]   Optical spectroscopy and the UV luminosity function of galaxies in the Abell 1367, Coma and Virgo clusters [J].
Cortese, L ;
Gavazzi, G ;
Iglesias-Paramo, J ;
Boselli, A ;
Carrasco, L .
ASTRONOMY & ASTROPHYSICS, 2003, 401 (02) :471-478
[8]   Intracluster planetary nebulae in the virgo cluster. II. Imaging catalog [J].
Feldmeier, JJ ;
Ciardullo, R ;
Jacoby, GH ;
Durrell, PR .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2003, 145 (01) :65-81
[9]   Detection of intergalactic red-giant-branch stars in the Virgo cluster [J].
Ferguson, HC ;
Tanvir, NR ;
von Hippel, T .
NATURE, 1998, 391 (6666) :461-463
[10]   A new, kinematically anomalous HI component in the spiral galaxy NGC 2403 [J].
Fraternali, F ;
Oosterloo, T ;
Sancisi, R ;
van Moorsel, G .
ASTROPHYSICAL JOURNAL, 2001, 562 (01) :L47-L50
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