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

M. Messineo , H. J. Habing , K. M. Menten , A. Omont (1) , L. O. Sjouwerman

1 IAP - Institut d'Astrophysique de Paris

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.

Domaines: Cosmologie et astrophysique extra-galactique [astro-ph.CO]

M. Messineo, H. J. Habing, K. M. Menten, A. Omont, L. O. Sjouwerman. 86 GHz SiO maser survey of late-type stars in the Inner Galaxy II. Infrared photometry of the SiO Target Stars. Astronomy and Astrophysics - A&A, 2004, 418, pp.103-116. ⟨hal-00005397⟩