A dataset provided by the European Space Agency

Name: AK Sco: enhanced magnetic activity in a pre-main sequence interacting binary
Published: 2012-04-12T00:00:00Z

Proposal ID	065187
Title	AK Sco: enhanced magnetic activity in a pre-main sequence interacting binary
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0651870201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0651870301 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0651870401
DOI	https://doi.org/10.5270/esa-40d6y90
Principal Investigator, PI	Prof Ana I. Gomez de Castro
Abstract	AK Sco is a unique source: a virgul10 Myr old pre-main-sequence (PMS) spectroscopicbinary composed of two nearly equal F5 stars that at periastron are separated bybarely 11 stellar radii. The orbit is not yet circularized (e = 0.47) and verystrong tides are expected. Previous high resolution UV spectroscopicobservations carried out with the HST/STIS have shown that there is an extendedregion with plasma at logTe (K)=4.8 reaching 1.7R*. The magnetic diffusivity inthis region is very small; unusually strong tidally modulated polarimetricvariations of the system have been detected suggesting a strong coupling betweengravitational tides and the stellar field. We propose to study the variation ofthe X-ray/UV spectrum of AK Sco as the stellar magnetospheres are modified by the tide.
Publications	XMM-Newton Monitoring of the Close Pre-main-sequence Binary AK Sco. Evidence of Tide-driven Filling of the Inner Gap in the Circumbinary Disk \|Gomez de Castro, Ana I., Lopez-Santiago, Javier, et al. \| ApJ \| 766-62 \| 2013 \| 2013ApJ...766...62G \| http://ui.adsabs.harvard.edu/#abs/2013ApJ...766...62G 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 Evidence of accretion triggered oscillations in the pre-main-sequence interacting binary AK Sco \|Gomez, de Castro, Ana I., Lopez-Santiago, Javier, \| MNRAS \| 429-1 \| 2013 \| 2013MNRAS.429L...1G \| http://ui.adsabs.harvard.edu/#abs/2013MNRAS.429L...1G 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 emission from Ae/Be Herbig stars due to disc-stellar magnetosphere interaction \|Ryspaeva, Elizaveta, Kholtygin, Alexander, \| MNRAS \| 521-2427 \| 2023 \| 2023MNRAS.521.2427R \| http://ui.adsabs.harvard.edu/#abs/2023MNRAS.521.2427R 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	2011-03-15T21:03:32Z/2011-03-22T21:18:45Z
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	2012-04-12T00:00:00Z
Keywords	"uv spectrum", "enhanced magnetic activity", "stellar field", "gravitational tides", "stellar magnetosphere", "magnetic diffusivity", "resolution uv spectroscopic", "ak sco", "stellar radii", "HST", "7r *."
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Prof Ana I. Gomez de Castro, 2012, 'AK Sco: enhanced magnetic activity in a pre-main sequence interacting binary', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-40d6y90