A dataset provided by the European Space Agency

Name: X-Ray Emission from Nitrogen-Rich Wolf-Rayet Stars
Published: 2011-03-30T00:00:00Z

Proposal ID	060202
Title	X-Ray Emission from Nitrogen-Rich Wolf-Rayet Stars
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0602020101 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0602020201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0602020301 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0602020401
DOI	https://doi.org/10.5270/esa-17c2cer
Principal Investigator, PI	Dr Stephen Skinner
Abstract	Wolf-Rayet (WR) stars are massive evolved stars approaching the end of theirlives as supernovae. Previous studies have focused on X-ray bright WR+OBcolliding wind binaries, but much less is known about the X-ray emission ofsingle WR stars. We have initiated a survey of single (non-binary) nitrogen-rich(WN-type) stars aimed at determining their X-ray properties and identifyingpossible emission processes. We have recently detected X-rays from a WN2 and aWN6 star with Chandra and an observation of a WN4 star is pending. We proposehere to use XMM EPIC to extend this exploratory survey to the later WN7 - WN9spectral types, thus providing a first-look at X-ray properties across the fullspectral sequence.
Publications	X-ray Emission from Nitrogen-Type Wolf-Rayet Stars \|Skinner Stephen L. Zhekov Svetozar A. et al. \| AJ \| 139-825 \| 2010 \| 2010AJ....139..825S \| http://ui.adsabs.harvard.edu/#abs/2010AJ....139..825S New X-Ray Detections of WNL Stars \|Skinner Stephen L. Zhekov Svetozar A. et al. \| AJ \| 143-116 \| 2012 \| 2012AJ....143..116S \| http://ui.adsabs.harvard.edu/#abs/2012AJ....143..116S Absence of hot gas within the Wolf-Rayet bubble around WR 16 \|Toala J. A. Guerrero M. A. \| A&A \| 559-52 \| 2013 \| 2013A&A...559A..52T \| http://ui.adsabs.harvard.edu/#abs/2013A&A...559A..52T 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 Chandra Detects the Rare Oxygen-type Wolf-Rayet Star WR 142 and OB Stars in Berkeley 87 \|Sokal Kimberly R. Skinner Stephen L. et al. \| ApJ \| 715-1327 \| 2010 \| 2010ApJ...715.1327S \| http://ui.adsabs.harvard.edu/#abs/2010ApJ...715.1327S Is the Pollocks paradigm of X-ray emission for O stars correct? \|Ryspaeva E. B. Kholtygin A. F. \| AN \| 338-959 \| 2017 \| 2017AN....338..959R \| http://ui.adsabs.harvard.edu/#abs/2017AN....338..959R The low-mass pre-main sequence population of Scorpius OB1 \|Damiani Francesco \| A&A \| 615-148 \| 2018 \| 2018A&A...615A.148D \| http://ui.adsabs.harvard.edu/#abs/2018A&A...615A.148D 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 The EXTraS project: Exploring the X-ray transient and variable sky \|De Luca A. Salvaterra R. et al. \| A&A \| 650-167 \| 2021 \| 2021A&A...650A.167D \| http://ui.adsabs.harvard.edu/#abs/2021A&A...650A.167D 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	2009-08-30T01:44:03Z/2010-03-03T02:08:10Z
Version	PPS_NOT_AVAILABLE
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	2011-03-30T00:00:00Z
Keywords	"xray properties", "wn4 star", "exploratory survey", "XMM", "EPIC", "xmm epic", "single wr stars", "xray emission", "x ray emission", "wn6 star", "spectral sequence", "xray bright wr", "emission processes"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Stephen Skinner, 2011, 'X-Ray Emission from Nitrogen-Rich Wolf-Rayet Stars', PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.5270/esa-17c2cer