A dataset provided by the European Space Agency

Proposal ID 011140
Title GT Observations of Active Cool Stars: Pi1 UMa
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111400101

DOI https://doi.org/10.5270/esa-69tve73
Principal Investigator, PI Dr Albert Brinkman
Abstract GT-pi1 UMa is a solar analog with an age of only about 300 Myrs. Its consequentactivity is intermediate between zero-age main-sequence stars and the Sun. Itis one of a few G main-sequence stars that has shown energetic X-ray flares.This target is part of a study on the Sun in Time in which we investigate thedecline of coronal activity of a solar analog with time. Important aspectsconcern the emission measure distribution, the abundance pattern that might beactivity dependent, and flare variability studies with respect to temperatures,abundances, densities, and mass motions. The pn and one MOS camera will be usedin TIMING mode with the medium filter to optimize the detection of soft photons.The OM will observe with the UVW2 filter.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2000-11-03T21:44:48Z/2000-11-04T13:45:38Z
Version 21.51_20241115_1113
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 2002-09-02T00:00:00Z
Last Update 2026-07-09
Keywords "coronal activity", "soft photons", "mass motions", "flare variability", "mos camera", "consequent activity", "abundance pattern", "energetic xray flares", "activity dependent", "pi1 uma", "solar analog", "aspects concern", "uvw2 filter", "active cool stars", "medium filter", "main sequence stars"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Albert Brinkman, 2002, 'GT Observations of Active Cool Stars: Pi1 UMa', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-69tve73
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.