A search for peculiar objects in young open clusters. II. A new Be star, the optical counterpart of IRAS 19564+3224 and a new open cluster in Vulpecula

Details A search for peculiar objects in young open clusters. II. A new Be star, the optical counterpart of IRAS 19564+3224 and a new open cluster in Vulpecula A search for peculiar objects in young open clusters. II. A new Be star, the optical counterpart of IRAS 19564+3224 and a new open cluster in Vulpecula

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...371..123b&link_type=abstract

Astronomy and Astrophysics, v.371, p.123-132 (2001)

Astronomy and Astrophysics

Astrophysics

5

Stars: Carbon Stars, Stars: Evolution, Stars: Emission-Line, Be, Stars: Individual (Ls Ii+32Deg</Sup&Gt, 9) Open Clusters And Associations

Scientific paper

A serendipitous sky field in Vulpecula was observed with Johnson BVR photometry and slitless spectroscopy in the 5600-8000 Å range, looking for emission line and late spectral type stars. We discovered that the B2V star LS II +32deg 9, most probably a member of the Vul OB4 association, is now an Hα emitter. Furthermore, we identified the optical counterpart of the IRAS source IRAS 19564+3224 as a C star. Photometric study of the surrounding stellar field revealed that this object lies inside the sky area of a previously undetected open cluster of intermediate age. We discuss the possible cluster membership of the Carbon star and its implications. Some hints about the galactic structure along the line of sight of the observed field are also given Based on data collected at 1.52 m ``Cassini" telescope of the Loiano Observing Station, Bologna Astronomical Observatory.

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