Release 11.12 ("Hergest Ridge")
Release 11.12 ("Hergest Ridge")
| Article ID: gc406 | |
| Author | Alcaino, G.; Wamsteker, W. |
| Title | Photometry in the central region of the globular cluster NGC 7099 |
| Journal | Astronomy and Astrophysics Supplement Series, vol. 50, p. 141-146 |
| Year of publication | 1982 (on gclusters from 2013-11-13 12:16:12 ) |
| Abstract | The results of iris photometry in the UBV system on short exposure plates of M30 (NGC 7099) are discussed. The photometry is given for the bright stars within a radius of 10 to 90 arcsec from the cluster center. A factor-of-two deficiency of blue horizontal branch stars to red giant stars is found for the central part of the cluster, compared to similar evaluations made at a radius of 80 to 300 arcsec. These ratios render values of helium content which range from about 0.27 in the outer regions to about 0.12 in the central region. |
| CM diagram |  |
| Tags | NGC 7099 |
This page has been visited 393 times since March, 14 2013
Query processed at 17:13, 25th April
| Home | | Parameters | | Table 1 | | Table 2 | | Table 3 |
| Search | | Feedback | | What's new | | Links | | Blog |