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Title:
The Southern Dwarf Hunt: Local Group Dwarf Candidates in the Southern Sky
Authors:
Whiting, Alan B.; Hau, George K. T.; Irwin, Mike
Affiliation:
AA(Physics Department, US Naval Academy; ), AB(Facultad de Física y Astronomía, Universidad Católica de Chile; ), AC(Institute of Astronomy, University of Cambridge; )
Publication:
The Astrophysical Journal Supplement Series, Volume 141, Issue 1, pp. 123-146. (ApJS Homepage)
Publication Date:
07/2002
Origin:
UCP
ApJ Keywords:
Galaxies: Dwarf, Galaxies: Local Group, ISM: Planetary Nebulae: General, ISM: Reflection Nebulae, Surveys
DOI:
10.1086/340037
Bibliographic Code:
2002ApJS..141..123W

Abstract

We present observations of 82 Local Group dwarf galaxy candidates, of which 62 were chosen visually from ESO-SRC survey plates of the southern sky (32 of which were not previously cataloged) and the rest suggested by various sources in the literature. Two are the Local Group galaxies Antlia and Cetus; nine are more distant galaxies, though still within a few megaparsecs; 45 are background galaxies; seven are planetary (or other emission) nebulae; 15 are reflection or other Galactic nebulae; two are galaxy clusters; one is a Galactic star cluster; and one is a misidentified star. We conclude that there is no large population of faint Local Group dwarf galaxies of any familiar type awaiting discovery. We point out the danger of relying on a single type of data to reach conclusions about an object. Based on observations made with the Isaac Newton Telescope, operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias, and on observations made at Cerro Tololo Interamerican Observatory (CTIO). CTIO is operated by the Association of Universities for Research in Astronomy, Inc. (AURA), under a cooperative agreement with the National Science Foundation as part of the National Optical Astronomy Observatory (NOAO).
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