ISOGAL survey of Baade's Windows
| dc.creator | Glass, Ian S. | |
| dc.creator | Alves, D. R. | |
| dc.creator | team, ISOGAL | |
| dc.creator | team, MACHO | |
| dc.date | 1999-12-13 | |
| dc.date | 1999-12-14 | |
| dc.date.accessioned | 2026-07-07T02:34:56Z | |
| dc.date.available | 2026-07-07T02:34:56Z | |
| dc.description | The Baade's Windows of low obscuration towards the inner parts of the Galactic bulge represent ideal places in which to develop an understanding of the ISOGAL colour-magnitude diagrams. Unlike the case for the solar neighbourhood, their contents are at a uniform distance from the Sun, affected only by the finite thickness of the Bulge. The objects detected in the ISOGAL survey are found to be late-type M-giants at the red giant tip or on the Asymptotic Giant Branch (AGB). The ISOGAL colour-magnitude diagrams show that mass-loss starts at about M4 and increases towards later types. Many non-Miras have mass-loss rates similar to shorter-period Miras. The visible counterparts of the ISOGAL sources have been identified in the database of the MACHO gravitational lensing survey. A first report of this work is included here. It is found that nearly all the ISOGAL sources are semi-regular variables (SRVs), which are many times more numerous than Miras. Their stellar luminosities increase with period. Based on a simple interpretation of the photometry, mass-loss rates from about 10^{-9} to 10^{-7} solar masses per year are found for SRVs with periods in excess of about days. | |
| dc.description | 8 pages, 6 figures, to be published in "ISO Surveys of a Dusty Universe", eds D. Lemke, M. Stickel, K. Wilke, Lecture Notes in Physics, Springer-Verlag | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9912245 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9912245 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/15438 | |
| dc.subject | Astrophysics | |
| dc.title | ISOGAL survey of Baade's Windows | |
| dc.type | text |