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Date and Time of the Query: 2019-06-26 T10:24:03 PDT
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For refcode 2007A&A...466..501V:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2007A&A...466..501V Carbon stars and C/M ratio in the WLM dwarf irregular galaxy Valcheva, A. T.; Ivanov, V. D.; Ovcharov, E. P.; Nedialkov, P. L. Abstract. We identify the rich carbon star population of the Magellanic-type dwarf irregular galaxy WLM (Wolf-Lundmark-Melotte) and study its photometric properties from deep near-IR observations. The galaxy also exhibits a clear presence of oxygen-rich population. We derive a carbon to M-star ratio of C/M = 0.56+/-0.12, relatively high in comparison with many galaxies. The spatial distribution of the AGB stars in WLM hints at the presence of two stellar complexes with a size of a few hundred parsecs. Using the H I map of WLM and the derived gas-to-dust ratio for this galaxy N(H I)/E(B-V) = 60+/-10 [ 10^21^ at. cm^-2^ mag^-1^] we re-determined the distance modulus of WLM from the IR photometry of four known Cepheids, obtaining (m-M)0 = 24.84+/-0.14 mag. In addition, we determine the scale length of 0.75+/-0.14 kpc of WLM disk in the J-band. Key words: galaxies: individual: WLM, stars: AGB and post-AGB, stars: carbon, galaxies: irregular, Local Group
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