Soft X-ray emission from intermediate-age open clusters: IC 4651
| dc.creator | Belloni, T. | |
| dc.creator | Tagliaferri, G. | |
| dc.date | 1998-04-06 | |
| dc.date.accessioned | 2026-07-07T02:26:32Z | |
| dc.date.available | 2026-07-07T02:26:32Z | |
| dc.description | We present the results of soft X-ray observations of the intermediate-age open cluster IC 4651 performed with the ROSAT PSPC. We detected 25 sources. Two are identified with a giant binary and a blue straggler respectively, both belonging to the cluster, and two with probable main-sequence members. Two other cases have ambiguous identification. Of the five binaries known in the cluster, the one detected in X rays is the only one whose period is short enough to maintain fast rotation and therefore strong stellar activity at a high age. The detected blue straggler is probably binary, suggesting that binarity is the key to producing a high level of X-ray emission. It is the third blue straggler detected in X rays. The remaining sources need to be identified through optical follow-up. | |
| dc.description | Accepted for publications in Astronomy and Astrophysics; 6 pages, including 1 figure | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9804056 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9804056 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/12312 | |
| dc.subject | Astrophysics | |
| dc.title | Soft X-ray emission from intermediate-age open clusters: IC 4651 | |
| dc.type | text |