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http://hdl.handle.net/2248/3749| Title: | Photoelectric and electronographic photometry of the globular cluster NGC 1851 |
| Authors: | Sagar, R Cannon, R. D Hawkins, M. R. S |
| Keywords: | Astronomical photometry Color-magnitude diagram Electronography, Electrophotometry Globular clusters UBV spectra Astronomical spectroscopy Horizontal branch stars Main sequence stars |
| Issue Date: | May-1988 |
| Publisher: | Royal Astronomical Society |
| Citation: | Monthly Notices of Royal Astronomical Society, Vol. 232, No. 1, pp. 131 - 145 |
| Abstract: | The colour-magnitude diagram for NGC 1851 is presented to a limit of V = 21.0 mag, approximately 2 mag below the main-sequence turn-off point, on the basis of UBV photoelectric photometry and electronographic BV photometry. The main-sequence turn-off parameters are (B-V)t = 0.40±0.03 mag; Vt = 19.45±0.1 mag. From the location of the horizontal branch stars, the apparent distance modulus to the cluster has been estimated as 15.45±0.2 mag. An age of 15±3 Gyr has been assigned to the cluster from the fitting of VandenBerg & Bell theoreticalisochrones |
| URI: | http://hdl.handle.net/2248/3749 |
| ISSN: | 0035-8711 |
| Appears in Collections: | IIAP Publications |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Photoelectric and electronographic photometry of the globular cluster NGC 1851 | 1.4 MB | Adobe PDF |  View/Open |
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