| Name | 076505 |
| Title | A Snapshot Survey of the Hyades |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0765050401 |
| DOI | https://doi.org/10.5270/esa-ifxolx6 |
| Author | European Space Agency |
| Description | Investigations of the relationship between stellar magnetic activity and rotation reveal the presence of a saturation threshold where, for unknown reasons, activity no longer varies with rotation period (Prot). However, these studies have focused on stars in young open clusters (<500 Myr) and field stars (2-10 Gyr). Measuring Prot and proxies for magnetic activity in older open clusters is essential to understand the evolution of the activity-rotation relation from the ZAMS to the age of field stars. We propose a snapshot survey to complete the X-ray census of stars with measured Prot in the 650-Myr-old Hyades. By matching the resulting X-ray catalog to our catalog of 90 Hyades Prot, we will analyze the behavior of coronal activity as a function of Rossby number Ro at 650 Myr. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2016-03-25T23:11:50Z/2016-03-26T01:58:31Z |
| 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 | 2017-04-06T22:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2017, A Snapshot Survey Of The Hyades, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ifxolx6 |