A dataset provided by the European Space Agency

Name: Origin of the X-ray emission in the He-rich luminous subdwarf BD +37 442
Published: 2017-02-16T23:00:00Z

Proposal ID	076455
Title	Origin of the X-ray emission in the He-rich luminous subdwarf BD +37 442
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0764550101
DOI	https://doi.org/10.5270/esa-kx7p4f9
Principal Investigator, PI	Dr Sandro MEREGHETTI
Abstract	BD +37 442 is one of the very few hot subdwarf stars detected in the X-rayrange. The observed X-rays could arise either from accretion onto a neutron staror white dwarf companion (as suggested by the possible presence of X-raypulsations at P=19.2 s) or from intrinsic emission of the hot subdwarf itself.Both possibilities are interesting because they offer the possibility toinvestigate the poorly known properties of radiation driven winds at the lowmass-loss rates present in hot subdwarfs. A new observation is required toconfirm or reject the pulsations and to better constrain the spectralproperties.
Publications	The lack of X-ray pulsations in the extreme helium star BD+37442 and its possible stellar wind X-ray emission \|Mereghetti, Sandro, La Palombara, Nicola, et al. \| MNRAS \| 466-2918 \| 2017 \| 2017MNRAS.466.2918M \| http://ui.adsabs.harvard.edu/#abs/2017MNRAS.466.2918M News on the X-ray emission from hot subdwarf stars \|Palombara, Nicola La, Mereghetti, Sandro, \| OAst \| 26-187 \| 2017 \| 2017OAst...26..187P \| http://ui.adsabs.harvard.edu/#abs/2017OAst...26..187P 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 XMM-Newton Line Emission Analysis Program (X-LEAP). I. Emission-line Survey of O VII, O VIII, and Fe L-shell Transitions \|Pan, Zeyang, Qu, Zhijie, et al. \| ApJS \| 271-62 \| 2024 \| 2024ApJS..271...62P \| http://ui.adsabs.harvard.edu/#abs/2024ApJS..271...62P 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	2016-02-01T02:33:38Z/2016-02-01T22:46:59Z
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	2017-02-16T23:00:00Z
Keywords	"white dwarf companion", "hot subdwarfs", "xray pulsations", "xray range", "neutron star", "hot subdwarf", "radiation driven winds", "spectral properties", "xray emission", "hot subdwarf stars"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Sandro MEREGHETTI, 2017, 'Origin of the X-ray emission in the He-rich luminous subdwarf BD +37 442', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-kx7p4f9