| Proposal ID | 082091 |
| Title | The rotation-activity connection for low mass stars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0820910101 |
| DOI | https://doi.org/10.5270/esa-syzu2sd |
| Principal Investigator, PI | Prof Juergen Schmitt |
| Abstract | A large number of rotation periods for low mass stars has become available now.In addition to the long known rapid rotators, a population of slowly rotating Mdwarfs with rotation periods above 100 days has been identified. These slowrotators pose a challenge for the cool star rotation activity paradigm, sinceabout a third of the sample is detected as RASS sources near the the saturationlimit for cool stars LX/Lbol virgul 10**-3 and hence belong to the most active stars.We propose XMM follow-up of a sample of very slow rotators undetected in theRASS to study the rotation-activity relation for such low mass objects and RGSspectroscopy of GJ699 to study the universality of the surface flux-coronaltemperature relation at the very lowest known levels of X-ray activity. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2018-04-19T10:19:50Z/2019-04-22T09:55:56Z |
| Version | 17.56_20190403_1200 |
| 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 | 2020-05-09T22:00:00Z |
| Keywords | "low mass stars", "slow rotators pose", "rotation activity connection", "saturation limit", "rotation periods", "XMM", "low mass objects", "slowly rotating", "rotation activity relation", "rgs spectroscopy", "xray activity", "cool stars lx", "slow rotators undetected", "active stars", "rapid rotators", "rass sources" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Juergen Schmitt, 2020, 'The rotation-activity connection for low mass stars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-syzu2sd |