A dataset provided by the European Space Agency

Name: Investigating the transitional nature of extreme O-type supergiants in X-rays
Published: 2014-02-09T00:00:00Z

Proposal ID	069088
Title	Investigating the transitional nature of extreme O-type supergiants in X-rays
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0690880101
DOI	https://doi.org/10.5270/esa-vmlz8du
Principal Investigator, PI	Dr Michael De Becker
Abstract	We propose to investigate the X-ray properties of HD14947, an O5 supergiantbelieved to be a transition object between O and Wolf-Rayet stars. Starsbelonging to this scarce category display several properties strongly pointingto their transitional status, including broad and strong emission lines in thevisible and infrared, and the existence is some cases of surrounding nebulaesimilar to those existing close to WR stars. We request observation time withXMM-Newton to check whether the X-ray emission of HD14947 deviates significantlyfrom the expected behaviour of regular O-type stars, as recently revealed by ourteam on the basis of an XMM-Newton observation of a similar object, attemptingto establish an additional transition criterion in X-rays for evolved O-type stars.
Publications	The X-ray under-luminosity of the O-type supergiants HD 16691 and HD 14947 revealed by XMM-Newton \|De Becker, M., \| NewA \| 25-7 \| 2013 \| 2013NewA...25....7D \| http://ui.adsabs.harvard.edu/#abs/2013NewA...25....7D 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 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 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	2013-01-20T19:53:38Z/2013-01-21T01:58:55Z
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	2014-02-09T00:00:00Z
Keywords	"wolf rayet stars", "type supergiants", "xray properties", "existing close", "XMM", "hd14947 deviates", "o5 supergiant", "emission lines", "scarce category display", "additional transition criterion", "transitional status", "XMM-Newton", "stars belonging", "xray emission", "type stars", "wr stars", "xmm newton", "transition object"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Michael De Becker, 2014, 'Investigating the transitional nature of extreme O-type supergiants in X-rays', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-vmlz8du