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JHK photometric study of the variable interstellar extinction in the direction of open star cluster NGC 654
| Content Provider | Indian Institute of Astrophysics |
|---|---|
| Author | Sagar, R. Yu, Q. Z. |
| Description | JHK magnitudes have been determined for 18 stars in the field of NGC 654. Study of the interstellar extinction law in the cluster direction indicates an anomalous distribution of interstellar grains causing more extinction in U and B pass-bands compared to that obtained from the color excesses E(V-J), E(V-H) and E(V-K) using a normal reddening law. This implies a small shift in the grain-size distribution towards smaller than normal-sized particles. Patchy distribution of interstellar matter seems to be responsible for the nonuniform extinction in the cluster region. |
| Starting Page | 1 |
| File Format | |
| ISSN | 00358711 |
| Language | English |
| Publisher Institution | The Royal Astronomical Society |
| Access Restriction | Open |
| Subject Keyword | Interstellar extinction Open clusters Star clusters Early stars Stellar color Stellar magnitude |
| Content Type | Text |
| Resource Type | Article |
| Subject | Astronomy and Astrophysics Space and Planetary Science |