| Proposal ID | 078206 |
| Title | A Snapshot Survey of the Hyades: Testing Models for Magnetic Saturation |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0782060101 |
| DOI | https://doi.org/10.5270/esa-700zpze |
| Principal Investigator, PI | Prof Marcel Agueros |
| Abstract | Investigations of the relationship between stellar magnetic activity androtation reveal the presence of a saturation threshold where, for unknownreasons, activity no longer varies with rotation period (Prot). However, thesestudies 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 openclusters is essential to understand the evolution of the activity-rotationrelation from the ZAMS to the age of field stars. We propose a snapshot X-raysurvey of K and M dwarfs with measured Prot in the 650-Myr-old Hyades. Bymatching the resulting X-ray catalog to our catalog of 134 Hyades Prot, we willanalyze the behavior of coronal activity as a function of Rossby number Ro at 650 Myr. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2016-08-16T13:14:36Z/2017-03-08T18:17:46Z |
| Version | PPS_NOT_AVAILABLE |
| Mission Description | The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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 | 2018-03-31T22:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "stellar magnetic activity", "activity rotation relation", "magnetic saturation", "field stars", "xray catalog", "snapshot survey", "134 hyades prot", "rotation period prot", "testing models", "saturation threshold", "snapshot xray survey", "coronal activity", "magnetic activity" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Marcel Agueros, 2018, 'A Snapshot Survey of the Hyades: Testing Models for Magnetic Saturation', PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.5270/esa-700zpze |