A dataset provided by the European Space Agency

Name: Investigating the origin of the X-ray emission of Cyg OB2 #5
Published: 2015-04-25T22:00:00Z

Proposal ID	074030
Title	Investigating the origin of the X-ray emission of Cyg OB2 #5
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0740300101
DOI	https://doi.org/10.5270/esa-3rxtf5n
Principal Investigator, PI	Mr Constantin Cazorla
Abstract	Massive stars have strong winds, which collide in massive binaries, giving riseto hard and varying X-ray emission. Cyg OB2 #5 is such a case. It was recentlyfound to be a quadruple system and changes in its X- ray emission indicate thatX-rays arise in the wind-wind collision (WWC) between the close binary and thethird star. In this context, X-rays are a crucial tool to constrain the orbitalparameters, but available observations only probe two phases of the 6.7 yr orbitof the third star. A monitoring (one observation per year) is thus needed and wetherefore request in this AO a short exposure observation (10 ks) to betterunderstand this iconic system.
Publications	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 Quest for the tertiary component in Cyg OB2 #5 \|Rauw Gregor Naze Yael \| A&A \| 627-2 \| 2019 \| 2019A&A...627A...2R \| http://ui.adsabs.harvard.edu/#abs/2019A&A...627A...2R Variations on a theme: the puzzling behaviour of Schulte 12 \|Naze Yael Rauw Gregor et al. \| A&A \| 627-99 \| 2019 \| 2019A&A...627A..99N \| http://ui.adsabs.harvard.edu/#abs/2019A&A...627A..99N Search for non-thermal X-ray emission in the colliding wind binary Cygnus OB2 #8A \|Mossoux E. Pittard J. M. et al. \| A&A \| 636-109 \| 2020 \| 2020A&A...636A.109M \| http://ui.adsabs.harvard.edu/#abs/2020A&A...636A.109M 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 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	2014-04-10T14:12:21Z/2014-04-10T19:55:41Z
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	2015-04-25T22:00:00Z
Last Update	2025-01-27
Keywords	"quadruple system", "short exposure", "close binary", "yr orbit", "massive binary", "iconic system", "orbital parameters", "cyg ob2", "probe phases", "varying xray emission", "x ray emission", "xray emission", "massive stars"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Mr Constantin Cazorla, 2015, 'Investigating the origin of the X-ray emission of Cyg OB2 #5', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-3rxtf5n