A search for H I in some peculiar faint dwarf galaxies

Begum, Ayesha ; Chengalur, Jayaram N. (2005) A search for H I in some peculiar faint dwarf galaxies Monthly Notices of the Royal Astronomical Society, 362 (2). pp. 609-611. ISSN 0035-8711

Full text not available from this repository.

Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-...

Related URL: http://dx.doi.org/10.1111/j.1365-2966.2005.09342.x


We present a deep Giant Metrewave Radio Telescope (GMRT) search for H I 21-cm emission from three dwarf galaxies, viz. POX 186, SC 24 and KKR 25. Based, in part, on previous single-dish H I observations, these galaxies have been classified as a blue compact dwarf (BCD), a dwarf irregular and a transition galaxy, respectively. However, in conflict with previous single-dish detections, we do not detect H I in SC 24 or KKR 25. We suggest that the previous single-dish measurements were probably confused with the local Galactic emission. In the case of POX 186, we confirm the previous non-detection of H I but with substantially improved limits on its H I mass. Our derived upper limits on the H I mass of SC 24 and KKR 25 are similar to the typical H I mass limit for dwarf spheroidal (dSph) galaxies, whereas in the case of POX 186, we find that its gas content is somewhat smaller than is typical of BCD galaxies.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Galaxies: Dwarf; Galaxies: Individual: KKR 25; Galaxies: Individual: POX 186; Galaxies: Individual: SC 24; Radio Lines: Galaxies
ID Code:63565
Deposited On:29 Sep 2011 04:07
Last Modified:29 Sep 2011 04:07

Repository Staff Only: item control page