A dataset provided by the European Space Agency

Proposal ID 011267
Title GT Observations of Hot Stars: Gamma2 Vel
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DOI https://doi.org/10.5270/esa-sl50iv9
Principal Investigator, PI Dr Albert Brinkman
Abstract GT-Gamma Vel is an early-type binary consisting of an O9 supergiant and aWolf-Rayet star. Both stars have a powerful wind and the resulting collisionzone is a strong X-ray source. We plan to explore the physical conditions andelemental abundances as well as the dynamics in this interaction region.Comparison with state-of-the art hydrodynamical models will provide a stringentcheck on the model input physics. Observations at maximum and minimum phase willreveal varying absorption columns and hence constraints on the mass loss rateand abundance patterns in the WR wind. Two phase-critical observations will beperformed: i) 30 ks during the X-ray maximum, ii) 65 ks during the low state.The pn will be used in full window/thick filter mode, and both MOS in window2/thick filter mode.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2000-11-08T19:50:58Z/2001-05-05T02:09:19Z
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 2003-02-16T00:00:00Z
Keywords "xray maximum", "wr wind", "type binary consisting", "minimum phase", "interaction region", "thick filter mode", "collision zone", "o9 supergiant", "model input physics", "varying absorption columns", "art hydrodynamical models", "abundance patterns", "xray source", "elemental abundance", "physical conditions", "mass loss rate", "stringent check", "wolf rayet star", "gamma vel", "gamma2 vel", "hot stars", "powerful wind"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Albert Brinkman, 2003, 'GT Observations of Hot Stars: Gamma2 Vel', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-sl50iv9