|Title||Probing the high energies phenomena at work in early B-type stars using the RGS|
|Author||Dr Yael Naze|
|Description||Despite its relatively high abundance amongst early-type stars, only a few B-stars have ever been observed with gratings. This resulted in our current poor understanding of the nature of X-ray emissions from these objects. By contrast, numerous high-resolution X-ray spectra of O-stars provides us a case where such gratings have significantly improved our knowledge of the physical parameters, notably by revising down the mass-loss rates of those objects. We thus propose a spectroscopic survey of early B type stars aimed at discovering the X-ray emission mechanisms at work in their weak winds using a range of diagnostics only available from high-res data (line ratios, shifts, shapes, widths).|
|Publication||Young Stellar Objects in Lynds 1641: Disks, Accretion, and Star Formation History . Fang, Min, Kim, Jinyoung Serena, et all. . ApJS . 207-5 . 2013 . 2013ApJS..207....5F ,
A New Halpha Emission-line Survey in the Orion Nebula Cluster . Szegedi-Elek, E., Kun, M., et all. . ApJS . 208-28 . 2013 . 2013ApJS..208...28S ,
Estudio de fuentes de rayos X asociadas a la fuente de rayos gamma no identificada 2FGL J0534.8-0548 . Kornecki, P., Combi, J. A., . BAAA . 58-237 . 2016 . 2016BAAA...58..237K ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
NGC 1980 Is Not a Foreground Population of Orion: Spectroscopic Survey of Young Stars with Low Extinction in Orion A . Fang, Min, Kim, Jinyoung Serena, et all. . AJ . 153-188 . 2017 . 2017AJ....153..188F ,
B stars seen at high resolution by XMM-Newton . Cazorla, Constantin, Naze, Yael, . A&A . 608-54 . 2017 . 2017A&A...608A..54C ,
Analysis of the X-ray emission of OB stars II: B stars . Ryspaeva, Elizaveta, Kholtygin, Alexander, . RAA . 19-120 . 2019 . 2019RAA....19..120R ,
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2014-04-06T00:00:00Z, 069020, 17.56_20190403_1200. https://doi.org/10.5270/esa-qpkm0lx|