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arXiv · 1604.04122

North Galactic plane structure with IPHAS Be stars

Leo Gkouvelis·Juan Fabregat·the IPHAS consortium
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Abstract

Our goal is to investigate the spiral structure of the Northern Galactic plane using as tracers the classical Be stars detected by INT Photometric H$α$ Survey (IPHAS). IPHAS scans the $29^o<l<+215^o, -5^o<b<+5^o$ region in the $r$, $i$ and H$α$ bands. Spectroscopic follow up has been done for the bright H$α$ emitters. We have developed an automatic procedure for spectral analysis, based on the BCD spectrophotometric system. In this paper we present a cataloque of 1135 Classical Be stars, for which we have determined spectral types, astrophysical parameters and distances. From these results we make a first attempt to map the structure of the Galactic disk in the anticenter direction.

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Leo Gkouvelis, Juan Fabregat, the IPHAS consortium. 2016-04-14. North Galactic plane structure with IPHAS Be stars. https://arxiv.org/abs/1604.04122

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