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Title: 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{sup -1}, and with R-band luminosities and H I 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 Australian National University 2.3 m telescope, the Wide-Field Spectrograph. This paper describes our survey criteria and procedures, lists the survey sample, and reports on initial observations.

Authors:
; ;  [1];  [2]
  1. Research School of Astronomy and Astrophysics, Australian National University, Mount Stromlo Observatory, Cotter Road, Weston Creek, ACT 2611 (Australia)
  2. International Centre for Radio Astronomy Research, University of Western Australia, M468, 35 Stirling Highway, Crawley, WA 6009 (Australia)
Publication Date:
OSTI Identifier:
21582902
Resource Type:
Journal Article
Journal Name:
Astronomical Journal (New York, N.Y. Online)
Additional Journal Information:
Journal Volume: 142; Journal Issue: 3; Other Information: DOI: 10.1088/0004-6256/142/3/83; Journal ID: ISSN 1538-3881
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ABUNDANCE; HYDROGEN; LUMINOSITY; MAGELLANIC CLOUDS; MASS; SOUTHERN HEMISPHERE; STARS; STATISTICS; TELESCOPES; UNIVERSE; EARTH PLANET; ELEMENTS; GALAXIES; MATHEMATICS; NONMETALS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; PLANETS

Citation Formats

Nicholls, David C., Dopita, Michael A., Jerjen, Helmut, and Meurer, Gerhardt R., E-mail: david@mso.anu.edu.au. THE SMALL ISOLATED GAS-RICH IRREGULAR DWARF (SIGRID) GALAXY SAMPLE: DESCRIPTION AND FIRST RESULTS. United States: N. p., 2011. Web. doi:10.1088/0004-6256/142/3/83.
Nicholls, David C., Dopita, Michael A., Jerjen, Helmut, & Meurer, Gerhardt R., E-mail: david@mso.anu.edu.au. THE SMALL ISOLATED GAS-RICH IRREGULAR DWARF (SIGRID) GALAXY SAMPLE: DESCRIPTION AND FIRST RESULTS. United States. doi:10.1088/0004-6256/142/3/83.
Nicholls, David C., Dopita, Michael A., Jerjen, Helmut, and Meurer, Gerhardt R., E-mail: david@mso.anu.edu.au. Thu . "THE SMALL ISOLATED GAS-RICH IRREGULAR DWARF (SIGRID) GALAXY SAMPLE: DESCRIPTION AND FIRST RESULTS". United States. doi:10.1088/0004-6256/142/3/83.
@article{osti_21582902,
title = {THE SMALL ISOLATED GAS-RICH IRREGULAR DWARF (SIGRID) GALAXY SAMPLE: DESCRIPTION AND FIRST RESULTS},
author = {Nicholls, David C. and Dopita, Michael A. and Jerjen, Helmut and Meurer, Gerhardt R., E-mail: david@mso.anu.edu.au},
abstractNote = {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{sup -1}, and with R-band luminosities and H I 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 Australian National University 2.3 m telescope, the Wide-Field Spectrograph. This paper describes our survey criteria and procedures, lists the survey sample, and reports on initial observations.},
doi = {10.1088/0004-6256/142/3/83},
journal = {Astronomical Journal (New York, N.Y. Online)},
issn = {1538-3881},
number = 3,
volume = 142,
place = {United States},
year = {2011},
month = {9}
}