Volume 418, Number 1, April IV 2004
|Page(s)||103 - 116|
|Section||Interstellar and circumstellar matter|
|Published online||02 April 2004|
II. Infrared photometry of the SiO target stars
Leiden Observatory, PO Box 9513, 2300 RA Leiden, The Netherlands e-mail: email@example.com; firstname.lastname@example.org
2 Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany e-mail: email@example.com
3 Institut d'Astrophysique de Paris, CNRS & Université Paris 6, 98bis Bd Arago, 75014 Paris, France e-mail: firstname.lastname@example.org
4 National Radio Astronomy Observatory, PO Box 0, Socorro NM 87801, USA e-mail: email@example.com
Corresponding author: M. Messineo, firstname.lastname@example.org
Accepted: 19 December 2003
We present a compilation and study of DENIS, 2MASS, ISOGAL, MSX and IRAS 1–25 μm photometry for a sample of 441 late-type stars in the inner Galaxy, which we previously searched for 86 GHz SiO maser emission [CITE]. 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 colour of our SiO targets are consistent with those of Mira type stars with dust silicate feature at 9.7 μm feature in emission, indicating only a moderate mass-loss rate.
Key words: stars: AGB and post-AGB / infrared: stars / stars: variables: general / stars: circumstellar matter / masers / Galaxy: stellar content
This is paper No. 21 in a refereed journal based on data from the ISOGAL project. Based on observations with ISO, an ESA project with instruments funded by ESA member states and with the participations of ISAS and NASA. Based on observations collected at the European Southern Observatory, La Silla Chile. Based on observations carried out with the IRAM 30-m telescope located at Pico Veleta. IRAM is supported by INSU/CNRS (France), MPG (Germany) and IGN (Spain).
© ESO, 2004
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