A dataset provided by the European Space Agency

Proposal ID 030017
Title X-ray activity at the low-mass end of the main-sequence
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0300170101

DOI https://doi.org/10.5270/esa-6e739a2
Principal Investigator, PI Dr Beate Stelzer
Abstract We propose to embark upon a systematic investigation of X-ray activity on fieldstars and brown dwarfs at the spectral type M/L transition and beyond usingsensitive XMM-Newton observations. The aim of this study is to examine thenature and efficiency of stellar dynamos at the bottom of the main-sequence. Forthis purpose we carefully selected a sample of ultra-cool dwarfs (spectral typeM7 and later) which are nearby (within 15 pc) and known to sustain achromosphere (Halpha emission has been detected). These characteristics make ourtargets most promising in a search for X-ray emission.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-02-19T05:25:56Z/2006-02-19T16:41:43Z
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 2007-03-11T00:00:00Z
Last Update 2025-01-27
Keywords "chromosphere halpha emission", "brown dwarf", "field stars", "M7", "systematic investigation", "main sequence", "xray activity", "XMM-Newton", "stellar dynamos", "spectral type", "xray emission", "low mass", "XMM", "x ray activity", "sensitive xmm newton"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Beate Stelzer, 2007, 'X-ray activity at the low-mass end of the main-sequence', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-6e739a2