86 GHz SiO maser survey of late-type stars in the Inner Galaxy II. Infrared photometry of the SiO Target Stars

M. Messineo (1) & H. J. Habing (1) & K. M. Menten (2) & A. Omont (3) & L. O. Sjouwerman (4)

(1) Leiden Observatory, P.O. Box 9513, 2300 RA Leiden, the Netherlands, & Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany, & Institut d'Astrophysique de Paris, CNRS & Université Paris 6, 98bis Bd Arago, F 75014 Paris, France, & National Radio Astronomy Observatory, P.O. Box 0, Socorro NM 87801, USA,

Paper: A&A in press

EPrint Server: astro-ph/0401262


We present a compilation and study of DENIS, 2MASS, ISOGAL, MSX and IRAS 1-25 micron photometry for a sample of 441 late-type stars in the inner Galaxy, which we previously searched for 86 GHz SiO maser emission (Messineo et al. 2002). The comparison of the DENIS and 2MASS J and Ks magnitudes shows that most of the SiO targets are indeed variable stars. The MSX colours and the IRAS [12]-[25] colour of our SiO targets are consistent with those of Mira type stars with dust silicate feature at 9.7 micron feature in emission, indicating only a moderate mass-loss rate.

Preprints available from the authors at messineo@strw.leidenuniv.nl , or the raw TeX (no figures) if you click here.

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