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Catalog Service:
H{alpha} emission-line stars in 7 dwarfs galaxies

Short name: J/AJ/134/2474
IVOA Identifier: ivo://CDS.VizieR/J/AJ/134/2474
DOI (Digital Object Identifier): 10.26093/cds/vizier.51342474
Publisher: CDS[+][Pub. ID]
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/134/2474
VO Compliance: Level 2: This is a VO-compliant resource.
Status: active
Registered: 2010 Apr 04 15:53:19Z
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Description


We describe a search for H{alpha} emission-line stars in M31, M33, and seven dwarfs in or near the Local Group (IC 10, NGC 6822, WLM, Sextans B, Sextans A, Pegasus, and the Phoenix dwarf) using interference filter imaging with the KPNO and CTIO 4m telescopes and Mosaic cameras. The survey is aimed primarily at identifying new luminous blue variables (LBVs) from their spectroscopic similarity to known LBVs, avoiding the bias toward photometric variability, which may require centuries to manifest itself if LBVs go through long quiescent periods. Follow-up spectroscopy with WIYN confirms that our survey detected a wealth of stars whose spectra are similar to the known LBVs.

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under Cooperative Agreement AST0122449 with the Johns Hopkins University
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