Deep CCD photometry of the globular cluster NGC 7099
1987; IOP Publishing; Volume: 319; Linguagem: Inglês
10.1086/165496
ISSN1538-4357
Autores Tópico(s)Astronomical Observations and Instrumentation
Resumoview Abstract Citations (56) References (32) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Deep CCD Photometry of the Globular Cluster NGC 7099 Bolte, Michael Abstract B and V photometry to V ≡ 24 mag of stars in the globular cluster NGC 7099 has been obtained with the CTIO 4 m CCD prime-focus camera. The color-magnitude diagram obtained shows very well defined, narrow cluster sequences with no blue straggler candidates and no indication of a binary star sequence lying above and to the right of the main sequence. Fitting the NGC 7099 main sequence to a Population II main sequence defined by local subdwarfs, the author derives a distance modulus to the cluster of (m-M)V = 14.65. The best fit to model isochrones is for models with enhanced oxygen abundance and an age near 17 Gyr. Publication: The Astrophysical Journal Pub Date: August 1987 DOI: 10.1086/165496 Bibcode: 1987ApJ...319..760B Keywords: Binary Stars; Charge Coupled Devices; Globular Clusters; Main Sequence Stars; Stellar Spectrophotometry; Ubv Spectra; Abundance; Color-Magnitude Diagram; Interstellar Extinction; Stellar Evolution; Stellar Models; Subdwarf Stars; Astrophysics; CLUSTERS: GLOBULAR; PHOTOMETRY; STARS: ABUNDANCES; STARS: EVOLUTION full text sources ADS | data products SIMBAD (13) NED (1)
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