| Proposal ID | 074307 |
| Title | Magnetic Activity in the Lowest Mass Pre-main Sequence Stars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0743070101 |
| DOI | https://doi.org/10.5270/esa-s4w69lt |
| Principal Investigator, PI | Mr David Principe |
| Abstract | The spectral type boundary that determines which very low-mass objects willeventually become M stars, vs. brown dwarfs, remains poorly constrained duringpre-main sequence evolution. X-ray observations of pre-main sequence M starsoffer a means to probe internal and surface stellar magnetic activity, so as tohelp determine this boundary. However, even though a majority of stars in thesolar neighborhood are of mid- to late-M type, the X-ray activity of such starsremain essentially unexplored for the important age range 10-100 Myr. We proposeto use XMM-Newton to observe 14 nearby (D~50 pc), young (age 10-40 Myr) stars oftype M3-M6, to investigate the potential decrease in X-ray luminosity for verylow-mass stars at this age. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2014-04-15T04:06:01Z/2014-08-21T16:34:09Z |
| 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 | 2015-09-05T22:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "probe internal", "age range", "xmm newton", "xray activity", "M3", "brown dwarf", "myr stars", "pre main sequence", "low mass stars", "xray luminosity", "XMM-Newton", "potential decrease", "poorly constrained", "type m3 m6", "solar neighborhood", "low mass objects", "spectral type boundary", "XMM", "magnetic activity" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Mr David Principe, 2015, 'Magnetic Activity in the Lowest Mass Pre-main Sequence Stars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-s4w69lt |