The Small Isolated Gas Rich Irregular Dwarf (SIGRID) Galaxy Sample: Description and First Results

Abstract

Using an optically-unbiased selection process based on the HIPASS neutral hydrogen survey, we have selected a sample of 83 spatially isolated, gas-rich dwarf galaxies in the southern hemisphere with cz between 350 and 1650 km s-1, and with R-band luminosities and HI masses less than that of the Small Magellanic Cloud. The sample is an important population of dwarf galaxies in the local Universe, all with ongoing star formation, and most of which have no existing spectroscopic data. We are measuring the chemical abundances of these galaxies, using the Integral Field Spectrograph on the ANU 2.3m telescope, the Wide Field Spectrograph (WiFeS). This paper describes our survey criteria and procedures, lists the survey sample, and reports on initial observations.

13 figures, 3 table. Accepted for publication in The Astronomical Journal

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Cited by in corpus (14)

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• Galaxy Interactions in Compact Groups I : The Galactic Winds of HCG16
• Metal-poor dwarf galaxies in the SIGRID galaxy sample. I. HII region observations and chemical abundances
• The HI Chronicles of LITTLE THINGS BCDs II: The Origin of IC 10's HI Structure
• Choirs HI Galaxy Groups: The metallicity of dwarf galaxies
• Comparison of Theoretical Starburst Photoionisation Models for Optical Diagnostics
• The SAMI Galaxy Survey: The discovery of a luminous, low-metallicity H II complex in the dwarf galaxy GAMA J141103.98-003242.3
• The HI Chronicles of LITTLE THINGS BCDS III: Gas Clouds in and around Mrk 178, VII Zw 403, AND NGC 3738
• SH$\alpha$DE: Survey description and mass-kinematics scaling relations for dwarf galaxies
• Metal-poor dwarf galaxies in the SIGRID galaxy sample. II. The electron temperature-abundance calibration and the parameters that affect it
• Nebular metallicities in two isolated Local Void dwarf galaxies
• The Neutral Hydrogen Properties of Galaxies in Gas-rich Groups
• Anomalous gas in ESO 149-G003: A MeerKAT-16 View
• Clumpy Starburst in a Local Dwarf Galaxy, NGC 1522