A dataset provided by the European Space Agency

Name 078249
Title A Hard Look at the Colliding Winds in the gamma Velorum system


DOI https://doi.org/10.5270/esa-87nx2jt
Author European Space Agency
Description We propose to explore the orbital variability of the nearby WR+O binary, gamma
Vel. This system has been the subject of a recent optical variability campaign
for both spectroscopy and precision photometry with the BRITE nanosatellites.
The X-ray data will provide direct constraints on the shock physics and
radiative braking processes that are present in the system. Unlike most other
colliding-winds binaries, we have a high-quality visual orbit, a distance
accurate to 7 pc, and a direct measurement of the luminosities of both stars. As
such, the gamma Vel system will constrain how these processes work. Lastly,
these observations will be made parallel to precision photometry from BRITE,
allowing for a connection to be made between X-ray and optical variability.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2016-11-22T14:24:09Z/2016-12-22T08:18:57Z
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 2018-01-13T23:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2018, A Hard Look At The Colliding Winds In The Gamma Velorum System, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-87nx2jt