A study of the Galactic Center stellar population is continuing with
a sensitive 2μm CCD camera. Using a 64 x 64 detector array, background limited
images are recorded with modest amounts of observing time (tob, 20 sec to reach
K =13). Magnitudes have been extracted using DAOPHOT from repeated imaging
of the central 5' x 5' to search among approximately 1500 stars for long period
variables (LPV's, P > 200d), particularily Miras. Miras have a well defined period -
luminosity relationship as well as one in period -mass. This program investigates
the nature of highly luminous stars at the Galactic Center. Presently 12 variables
have been found and have several characteristics consistant with Miras. They have
a maximum bolometric luminosity of -4.4 mag which supports the case that high
luminosity stars in the central 6 pc are young supergiants.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/623913 |
| Date | 11 1900 |
| Creators | Impey, C. D., Bothun, G. D. |
| Contributors | Univ Arizona, Steward Observ |
| Publisher | Steward Observatory, The University of Arizona (Tucson, Arizona) |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Article |
| Source | Steward Observatory Parker Library SO QB 4 .S752 ARCH |
| Rights | Copyright © All Rights Reserved. |
| Relation | Preprints of the Steward Observatory #845, http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1989ApJ...341...89I&db_key=AST&data_type=HTML&format=&high=3ed65e9cd007589 |
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