| Name | 002414 |
| Title | Clump Giants in the Hyades |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0024140101 |
| DOI | https://doi.org/10.5270/esa-1p6rmso |
| Author | Dr Nancy Brickhouse |
| Description | Cluster giant stars allow a powerful test of our concepts of coronal magnetic activity and its evolution. The puzzling result of large differences in coronal strength among the 4 Hyades clump giants, when these stars are so similar, merits detailed study. Moreover, the renaissance of magnetic activity in helium-burning stars challenges our ideas of dynamo evolution and wind-induced angular momentum loss. We propose XMM observations of 3 Hyades giant stars to document the differences and similarities in coronal structure and abundances to finally isolate the dynamo effects in a well-understood stellar population. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2001-03-13T18:14:12Z/2001-03-14T11:52:45Z |
| Version | 17.56_20190403_1200 |
| Mission Description | The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2002-07-23T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2002-07-23T00:00:00Z, 002414, 17.56_20190403_1200. https://doi.org/10.5270/esa-1p6rmso |