A dataset provided by the European Space Agency

Name: KIC 9832227: A Contact Binary about to Merge
Published: 2018-05-16T22:00:00Z

Proposal ID	080248
Title	KIC 9832227: A Contact Binary about to Merge
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0802480101
DOI	https://doi.org/10.5270/esa-xy2d0ph
Principal Investigator, PI	Dr Dirk Pandel
Abstract	Luminous red novae are thought to be the result of the merger of twonon-degenerate stars in a contact binary (W Ursae Majoris star). Previously,stellar mergers in these systems have only been recognized after they hadalready entered the luminous red nova stage, making it difficult to study theirpre-outburst properties. KIC 9832227 was recently identified as a contact binarythat may undergo a merger in approximately five years. This provides us with aunique opportunity to study the evolution of a contact binary as it approachesthe luminous red nova stage. The proposed XMM-Newton observation will provide abaseline for future X-ray monitoring leading up to the merger and allow us toinvestigate the stellar activity on the binary.
Publications	The hierarchical triple nature of the former red nova precursor candidate KIC 9832227 \|Kovacs Geza Hartman Joel D. \| A&A \| 631-126 \| 2019 \| 2019A&A...631A.126K \| http://ui.adsabs.harvard.edu/#abs/2019A&A...631A.126K 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 X-Ray and UV Observations of the Contact Binary KIC 9832227 \|Pandel Dirk Molnar Lawrence A. \| AJ \| 166-51 \| 2023 \| 2023AJ....166...51P \| http://ui.adsabs.harvard.edu/#abs/2023AJ....166...51P 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	2017-04-18T14:51:53Z/2017-04-19T03:21:53Z
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	2018-05-16T22:00:00Z
Last Update	2025-01-27
Keywords	"future xray", "kic 9832227", "contact binary", "xmm newton", "XMM-Newton", "stellar mergers", "degenerate stars", "XMM", "pre outburst properties", "stellar activity", "ursae majoris star", "luminous red novae"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Dirk Pandel, 2018, 'KIC 9832227: A Contact Binary about to Merge', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-xy2d0ph