A dataset provided by the European Space Agency

Name: The X-ray properties of the mysterious high Galactic latitude O-star HD93521
Published: 2010-11-26T00:00:00Z

Proposal ID	060062
Title	The X-ray properties of the mysterious high Galactic latitude O-star HD93521
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0600620101
DOI	https://doi.org/10.5270/esa-duuu07i
Principal Investigator, PI	Prof Gregor Rauw
Abstract	We propose to investigate the X-ray properties of the mysterious O9.5Vp starHD93521. This object is a very fast rotator, located at an unusually highGalactic latitude of 62.15 and displaying prominent line profile variability inthe optical and UV domain. The nature of this star has been much debated overthe last decades and it has been suggested that this is either a rather normalPopulation I O-type star displaying non-radial pulsations or a low-massPopulation II object, or an O-star with a compact companion that accretes matterfrom the O-star. X-ray observations have the power to discriminate between thesescenarios since the X-ray spectrum and luminosity are expected to be quitedistinct in the three cases.
Publications	The nature of the high Galactic latitude O-star HD 93521: new results from X-ray and optical spectroscopy \|Rauw, G., Morel, T., \| A&A \| 546-77 \| 2012 \| 2012A&A...546A..77R \| http://ui.adsabs.harvard.edu/#abs/2012A&A...546A..77R XMM-Newton publication statistics \|Ness, J.-U., Parmar, A. N., et al. \| AN \| 335-210 \| 2014 \| 2014AN....335..210N \| http://ui.adsabs.harvard.edu/#abs/2014AN....335..210N The Tight Relation between X-Ray and Ultraviolet Luminosity of Quasars \|Lusso, E., Risaliti, G., \| ApJ \| 819-154 \| 2016 \| 2016ApJ...819..154L \| http://ui.adsabs.harvard.edu/#abs/2016ApJ...819..154L The Million Optical - Radio/X-ray Associations (MORX) Catalogue \|Flesch, Eric W., \| PASA \| 33-52 \| 2016 \| 2016PASA...33...52F \| http://ui.adsabs.harvard.edu/#abs/2016PASA...33...52F Analysis of the X-ray emission of OB stars: O stars \|Ryspaeva, Elizaveta, Kholtygin, Alexander, \| RAA \| 18-104 \| 2018 \| 2018RAA....18..104R \| http://ui.adsabs.harvard.edu/#abs/2018RAA....18..104R A Luminous X-Ray Transient in SDSS J143359.16+400636.0: A Likely Tidal Disruption Event \|Brightman, Murray, Ward, Charlotte, et al. \| ApJ \| 909-102 \| 2021 \| 2021ApJ...909..102B \| http://ui.adsabs.harvard.edu/#abs/2021ApJ...909..102B Classification of 4XMM-DR9 sources by machine learning \|Zhang, Yanxia, Zhao, Yongheng, \| MNRAS \| 503-5263 \| 2021 \| 2021MNRAS.503.5263Z \| http://ui.adsabs.harvard.edu/#abs/2021MNRAS.503.5263Z X-ray emission from a rapidly accreting narrow-line Seyfert 1 galaxy at z = 6.56 \|Wolf, J., Nandra, K., et al. \| A&A \| 669-127 \| 2023 \| 2023A&A...669A.127W \| http://ui.adsabs.harvard.edu/#abs/2023A&A...669A.127W From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez, Antonio C., \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R Robust constraints on feebly interacting particles using XMM-Newton \|Luque, Pedro De la Torre, Balaji, Shyam, \| PhRvD \| 109-L101305 \| 2024 \| 2024PhRvD.109j1305L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j1305L Multimessenger search for electrophilic feebly interacting particles from supernovae \|Luque, Pedro De la Torre, Balaji, Shyam, \| PhRvD \| 109-103028 \| 2024 \| 2024PhRvD.109j3028L \| http://ui.adsabs.harvard.edu/#abs/2024PhRvD.109j3028L Importance of Cosmic-Ray Propagation on Sub-GeV Dark Matter Constraints \|De la Torre Luque, Pedro, Balaji, Shyam, \| ApJ \| 968-46 \| 2024 \| 2024ApJ...968...46D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...968...46D
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2009-11-02T23:07:35Z/2009-11-03T10:44:27Z
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	2010-11-26T00:00:00Z
Keywords	"5vp star hd93521", "star hd93521", "xray properties", "galactic latitude", "uv domain", "compact companion", "xray spectrum", "type star displaying", "normal population", "radial pulsations", "accretes matter", "fast rotator"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Prof Gregor Rauw, 2010, 'The X-ray properties of the mysterious high Galactic latitude O-star HD93521', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-duuu07i