A dataset provided by the European Space Agency

Proposal ID 011147
Title GT Observations of Active Cool Stars: Sigma2 CrB
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111470101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111470201
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111470301
DOI https://doi.org/10.5270/esa-h61dhje
Principal Investigator, PI Dr Albert Brinkman
Abstract GT-sigma2 CrB = TZ CrB is an active RS CVn binary consisting of two early main-sequence G stars, locked in synchronous rotation. The rapid rotation inducesstrong magnetic activity that is thought of as enhanced activity of two spun-upSuns. We propose to observe sigma CrB for 40 ks to investigate the compositionof its quiescent corona and, if flares are seen, to follow the density, plasmavelocity, temperature, and abundance histories during evaporation and coolingprocesses with the RGS and the EPICs. To avoid saturation, the pn and one MOScamera will be used in TIMING mode, both with the medium filter. Coordinatedradio VLA and spatially resolved VLBA/VLBI as well as optical observations areplanned to study the geometry and energy balance of sigma CrB.s atmosphere.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2001-08-29T11:03:13Z/2002-02-23T05:47:05Z
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 2003-03-16T00:00:00Z
Keywords "sigma crb", "rapid rotation induces", "cooling processes", "plasma velocity", "main sequence", "coordinated radio vla", "active cool stars", "tz crb", "medium filter", "mos camera", "abundance histories", "enhanced activity", "EPIC", "resolved vlba", "sigma2 crb", "avoid saturation", "quiescent corona", "energy balance", "synchronous rotation", "magnetic activity"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Albert Brinkman, 2003, 'GT Observations of Active Cool Stars: Sigma2 CrB', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-h61dhje