| Name | 084013 |
| Title | The rotation-activity connection for low mass stars |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0840130301 |
| DOI | https://doi.org/10.5270/esa-6p81wnk |
| 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 | 2019-09-15T07:04:30Z/2020-04-14T04:21:31Z |
| 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 | 2021-05-01T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Prof Juergen Schmitt, 2021, 084013, 18.02_20200221_1200, European Space Agency, https://doi.org/10.5270/esa-6p81wnk |