Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/383

Download PDF (Author's final draft) (Adobe Acrobat PDF, -1 bytes)

Title

The discovery of new galaxy members in the NGC 5044 and 1052 groups

Author(s)

McKay, N. P.;  Mundell, Carole;  Brough, Sarah;  Forbes, Duncan A.;  Barnes, David G.;  James, Phil A.;  Goudfrooij, Paul;  Kozhurina-Platais, Vera;  Whitaker, Richard J.

Abstract

We present the results of neutral hydrogen (HI) observations of the NGC 5044 and NGC 1052 groups, as part of a GEMS (Group Evolution Multiwavelength Study) investigation into the formation and evolution of galaxies in nearby groups. Two new group members have been discovered during a wide-field HI imaging survey conducted using the ATNF Parkes telescope. These results, as well as those from follow-up HI synthesis and optical imaging, are presented here. J1320 - 1427, a new member of the NGC 5044 group, has an HI mass of and , with a radial velocity of v= 2750 kms-1. The optical galaxy is characterized by two regions of star formation, surrounded by an extended, diffuse halo. J0249-0806, the new member of the NGC 1052 group, has and v= 1450 kms-1. The optical image reveals a low-surface-brightness galaxy. We interpret both of these galaxies as irregular type, with J0249 - 0806 possibly undergoing first infall into the NGC 1052 group.

Publication type

Journal article

Research centre

Swinburne University of Technology. School of Biophysical Sciences and Electrical Engineering. Centre for Astrophysics and Supercomputing

Source

Monthly notices of the Royal Astronomical Society, Vol. 352, no. 4 (Aug. 2004), pp. 1121-1134

Publication year

2004

Publisher

Blackwell Publishers

ISSN

0035-8711

Publisher URL

http://dx.doi.org/10.1111/j.1365-2966.2004.08007.x

Copyright

Copyright © 2004 RAS. Author's final draft reproduced here in accordance with the copyright policy of the publisher.

Full text

Peer reviewed