A dataset provided by the European Space Agency

Name 086111
Title The rotation-activity connection for low mass stars


DOI https://doi.org/10.5270/esa-[xxxxxxx]
Author Prof Juergen Schmitt
Description Recently a large number of rotation period measurements of low mass stars of type M have become available. Surprisingly, one finds that in addition to the well-known rapid rotators a population of very slowly rotating M dwarfs with rotation periods exceeding 100 days. These slow rotators pose a challenge for the usual rotation- activity paradigm, since about a third of these stars have been detected in the ROSAT all-sky survey, even though the RASS data did not probe significantly deeper than the saturation limit for stars of masses below 0.6 MSun. We thus propose XMM follow-up for a complete sample of nearby, undetected low mass stars with long rotation periods down to a sensitivity limit of L_X-L_bol virgul 2 10**-5 to study the relation between X-ray activity and rotation in these stars.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2020-09-23T22:15:04Z/2020-11-23T21:18:45Z
Version 18.02_20200221_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 2021-12-15T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2021-12-15T00:00:00Z, 086111, 18.02_20200221_1200. https://doi.org/10.5270/esa-[xxxxxxx]