A dataset provided by the European Space Agency

Name: Investigating the origin of the X-ray emission of Cyg OB2 #5 - continuation
Published: 2017-11-11T23:00:00Z

Proposal ID	078004
Title	Investigating the origin of the X-ray emission of Cyg OB2 #5 - continuation
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0780040101
DOI	https://doi.org/10.5270/esa-rqp6i9s
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 thatsome X-rays arise in the wind-wind collision (WWC) between the close binary andthe third star orbiting it in 6.7 yrs. In this context, X-rays are a crucialtool to constrain the orbital parameters, but the 6.7 yr orbit is poorlysampled. A monitoring (one observation per year) is thus needed. To continuethis program, we request in this AO a short exposure (10 ks).
Publications	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 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 Search for Young Stellar Objects within 4XMM-DR13 Using CatBoost and SPE \|Ma Xiangyao Zhang Yanxia et al. \| AJ \| 168-210 \| 2024 \| 2024AJ....168..210M \| http://ui.adsabs.harvard.edu/#abs/2024AJ....168..210M New 511 keV Line Data Provide Strongest sub-GeV Dark Matter Constraints \|De la Torre Luque Pedro Balaji Shyam \| ApJ \| 973-L6 \| 2024 \| 2024ApJ...973L...6D \| http://ui.adsabs.harvard.edu/#abs/2024ApJ...973L...6D
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2016-10-21T14:56:54Z/2016-10-21T19:56:54Z
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	2017-11-11T23:00:00Z
Last Update	2025-08-04
Keywords	"star orbiting", "massive stars", "close binary", "orbital parameters", "quadruple system", "yr orbit", "massive binary", "varying xray emission", "poorly sampled", "cyg ob2", "short exposure", "xray emission"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Mr Constantin Cazorla, 2017, 'Investigating the origin of the X-ray emission of Cyg OB2 #5 - continuation', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-rqp6i9s