A dataset provided by the European Space Agency

Name 050401
Title Sleuthing X-ray Emission in Very Low Mass Dwarfs: Spectroscopy of VB 10


DOI https://doi.org/10.5270/esa-xlhmuil
Author Dr Rachel Osten
Description The bulk of very low mass stars with X-ray detections in quiescence show a marked decline in chromospheric and coronal activity past a spectral type of M7, some objects display these emissions, suggesting a decrease in chromospheric and coronal heating efficiencies. Previous X-ray investigations have focussed mostly on detections, revealing evidence for low coronal temperatures. Yet, among active and inactive earlier spectral type M dwarfs, X-ray spectra show the presence of hot coronal plasma, thought to be related to the unknown coronal heating mechanism. We propose an observation with XMM-Newton to investigate the spectral distribution of coronal plasma in the M8 dwarf VB 10 as a way to constrain the coronal heating processes taking place in very low mass dwarfs.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2008-04-06T12:14:52Z/2008-04-07T06:09:27Z
Version 17.56_20190403_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 2009-06-05T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2009-06-05T00:00:00Z, 050401, 17.56_20190403_1200. https://doi.org/10.5270/esa-xlhmuil