A dataset provided by the European Space Agency

Proposal ID 074079
Title Cepheid Associates: Star Formation and Distance Calibration
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0740790101

DOI https://doi.org/10.5270/esa-4c5qsib
Principal Investigator, PI Dr Nancy Remage Evans
Abstract XMM-Newton observations are powerful discriminants between young stars and theold field population because of the well known relation between the age of lowmass stars and their X-ray strength. We use this property to identify youngresolved physical companions of Cepheids and also low mass members of clusterscontaining Cepheids. This will probe the maximum separation in Cepheid binaries,a diagnostic of star formation. The target list contains the 5 brightestCepheids in the recent analysis of Cepheids in clusters (Anderson, et al. 2013).This project will identify low mass cluster members which provide a calibrationof the distances of clusters.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2015-03-13T09:10:05Z/2015-03-13T20:31:45Z
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 2016-04-01T22:00:00Z
Keywords "low mass stars", "star formation", "cluster anderson", "powerful discriminants", "cepheid binary", "xray strength", "XMM", "distance calibration", "resolved physical companions", "low mass", "field population", "brightest cepheids", "maximum separation", "cepheid associates", "XMM-Newton", "low mass cluster", "target list", "xmm newton"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Nancy Remage Evans, 2016, 'Cepheid Associates: Star Formation and Distance Calibration', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-4c5qsib