We propose to observe the complete sample of confirmed binary Be stars with sdOcompanions. We aim to probe the essentials of binary evolution theory whichpredicts that Be-type stars are the products of close binary evolution, and thata significant fraction of them have hot companions which were stripped ofhydrogen during a mass exchange event. The proposed survey will lead to acharacterization of X-ray emission from Be+sdO binaries and establishing theirX-ray properties. Furthermore, we propose to measure the X-ray spectra of twoprototypical Be+sdO systems, phi Per and o Pup, to measure the hot plasmatemperatures and emission measure, and to validate a hypothesis about stellarwind collisions in Be binaries.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2022-04-30T02:22:28Z/2022-04-30T10:07:28Z
Version
19.17_20220121_1250
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.
European Space Agency, Dr Lidia Oskinova, 2023, 'Bringing stripped stars to X-ray light', 19.17_20220121_1250, European Space Agency, https://doi.org/10.57780/esa-939isak
