A dataset provided by the European Space Agency

Name 030069
Title The activity-rotation-age relationship in stellar clusters: NGC 6475
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0300690101
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0300690201

DOI 10.5270/esa-dfro6lz
Author Dr Roberto Pallavicini
Description We propose to observe the open cluster NGC 6475 (age ~220 Myr, [Fe-H] = 0.14 +- 0.06) to investigate the activity-rotation-age relationship of low-mass stars in the crucial age interval between the Pleiades and the Hyades. We will use XMM-Newton observations of the proposed cluster to go a factor of 10 deeper than ROSAT (to detect new faint candidate members) and to obtain spectral information on the brightest cluster members (to derive coronal temperatures and metallicities). These observations will provide strong constraints on the universality (or lack of) of the activity-rotation-age relationship, and hence on dynamo models of stellar coronal activity.
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Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-04-02T10:20:24Z/2006-04-03T03:17:01Z
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 2007-05-03T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2007-05-03T00:00:00Z, 030069, 17.56_20190403_1200. https://doi.org/10.5270/esa-dfro6lz