A dataset provided by the European Space Agency

Name: X-Ray Spectroscopy of the Hyades Binary 71 Tau
Published: 2011-09-04T00:00:00Z

Proposal ID	065079
Title	X-Ray Spectroscopy of the Hyades Binary 71 Tau
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0650790101
DOI	https://doi.org/10.5270/esa-0bno89k
Principal Investigator, PI	Dr Theodore Simon
Abstract	71 Tau is an enigmatic object for two reasons: (i) it is the second brightestX-ray source in the Hyades, yet early-F stars as a rule are not strong coronalemitters; (ii) it lies 1 mag above the cluster main sequence, implying it is 150Myr older than other cluster members. Recent HST observations have discovered afaint stellar companion directly south of the primary that is seen only in itsUV emission lines. The high emission levels of this object are most readilyexplained if it is a tight binary of coronally active dG stars. We propose toobserve the O VII and O VIII lines near 20 A using the XMM RGS. The ratio ofthese line strengths will be used to determine whether the UV secondary canaccount for the striking X-ray properties of 71 Tau.
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 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	2010-08-17T01:16:50Z/2010-08-17T12:56:56Z
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	2011-09-04T00:00:00Z
Keywords	"faint stellar companion", "XMM", "uv emission lines", "emission levels", "xmm rgs", "tight binary", "line strengths", "coronal emitters", "71 tau", "viii lines", "striking xray properties", "x ray spectroscopy", "brightest xray source", "uv secondary", "enigmatic object", "cluster main sequence", "HST"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Theodore Simon, 2011, 'X-Ray Spectroscopy of the Hyades Binary 71 Tau', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-0bno89k