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FIGGS: Faint Irregular Galaxies GMRT Survey - Overview, observations and first results
Ayesha Begum, Jayaram N. Chengalur, I. D. Karachentsev +2
The Faint Irregular Galaxies GMRT Survey (FIGGS) is a Giant Metrewave Radio Telescope (GMRT) based HI imaging survey of a systematically selected sample of extremely faint nearby d…
Baryonic Tully-Fisher Relation for Extremely Low Mass Galaxies
Ayesha Begum, Jayaram N. Chengalur, I. D. Karachentsev +1
We study Tully-Fisher relations for a sample that combines extremely faint (M_B > -14.0) galaxies along with bright (i.e. L_*) galaxies. Accurate (~ 10%) distances, I band photomet…
The Local Group dwarf Leo T: HI on the brink of star formation
Emma V. Ryan-Weber, Ayesha Begum, Tom Oosterloo +5
We present Giant Meterwave Radio Telescope (GMRT) and Westerbork ynthesis Radio Telescope (WSRT) observations of the recently discovered Local Group dwarf galaxy, Leo T. The peak H…
Gas rich galaxies from the FIGGS survey
Jayaram N. Chengalur, Ayesha Begum, I. D. Karachentsev +2
The FIGGS (Faint Irregular Galaxy GMRT Survey) is aimed at creating a multi-wavelength observational data base for a volume limited sample of the faintest gas rich galaxies. In thi…
FIGGS: Faint Irregular Galaxies GMRT Survey
Ayesha Begum, Jayaram N. Chengalur, I. D. Karachentsev +2
The Faint Irregular Galaxies GMRT Survey (FIGGS) is a large program aimed at providing a comprehensive and statistically robust characterisation of the neutral ISM properties of fa…
Life in the last lane: Star formation and chemical evolution in an extremely gas-rich dwarf
Ayesha Begum, Jayaram N. Chengalur, Robert C. Kennicutt +2
We present an analysis of HI, H-alpha, and oxygen abundance data for NGC 3741. This galaxy has a very extended gas disk (~8.8 times the Holmberg radius), and a dark to luminous (i.…