A dataset provided by the European Space Agency

Proposal ID 069281
Title The Wind-Wind Interaction Region and Stellar Wind Geometry of V444 Cyg
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DOI https://doi.org/10.5270/esa-yzg1qo2
Principal Investigator, PI Ms Jamie Lomax
Abstract Angular momentum and mass loss from massive binary star systems is poorlyconstrained; however, eclipsing colliding-wind systems provide usefullaboratories in which to study these processes. V444 Cyg is a bright, WN5+O6colliding-wind system that shows different eclipse behaviors in the hard andsoft X-rays. We ask for XMM-Newton observations that, combined with opticalspectropolarimetric observations, will significantly improve our understandingof the 3D structure of the winds and wind-wind collision region in V444 Cyg.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2012-05-05T20:43:34Z/2012-06-15T04:45:44Z
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 2013-07-06T00:00:00Z
Last Update 2025-01-27
Keywords "eclipse behaviors", "stellar wind geometry", "mass loss", "xmm newton", "XMM-Newton", "optical spectropolarimetric", "poorly constrained", "soft xray", "XMM", "v444 cyg", "useful laboratories", "3d structure", "angular momentum"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Ms Jamie Lomax, 2013, 'The Wind-Wind Interaction Region and Stellar Wind Geometry of V444 Cyg', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-yzg1qo2