A dataset provided by the European Space Agency

Name: Properties of X-ray activity cycles on young solar-like stars: epsilon Eridanae
Published: 2020-02-11T23:00:00Z

Proposal ID	082007
Title	Properties of X-ray activity cycles on young solar-like stars: epsilon Eridanae
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0820070201 https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0820070301
DOI	https://doi.org/10.5270/esa-eazkxlo
Principal Investigator, PI	Prof Beate Stelzer
Abstract	We propose to continue our XMM-Newton monitoring of the young solar analogepsilon Eri started in AO 14. So far only one X-ray cycle has been found on astar resembling the young Sun, iota Hor (600Myr, SpT G0V). Its X-ray cycle isremarkably one of the shortest dynamo cycles known to date (1.6 yrs), the onlyX-ray cycle identified so far on a star with high chromospheric activity level,and episodically interrupted. Our target, Epsilon Eri resembles iota Hor (youngage, short calcium cycle, high activity) and our observations aim atestablishing whether the peculiar features of iota Hors X-ray cycle arecharacteristic for such young stars. We ask for two snapshots in AO17, for atotal of 10ksec to be combined with our previous data and the continued Ca II monitoring program of epsilon Eri.
Publications	An X-ray activity cycle on the young solar-like star u220a Eridani \|Coffaro M. Stelzer B. et al. \| A&A \| 636-49 \| 2020 \| 2020A&A...636A..49C \| http://ui.adsabs.harvard.edu/#abs/2020A&A...636A..49C Helium absorption in exoplanet atmospheres is connected to stellar coronal abundances \|Poppenhaeger K. \| MNRAS \| 512-1751 \| 2022 \| 2022MNRAS.512.1751P \| http://ui.adsabs.harvard.edu/#abs/2022MNRAS.512.1751P Characterizing X-ray activity cycles of young solar-like stars with solar observations \|Coffaro Martina Stelzer Beate \| AN \| 343-10066 \| 2022 \| 2022AN....34310066C \| http://ui.adsabs.harvard.edu/#abs/2022AN....34310066C In the Trenches of the Solar-Stellar Connection. VI. Total EclipSS \|Ayres Thomas Buzasi Derek \| ApJS \| 263-41 \| 2022 \| 2022ApJS..263...41A \| http://ui.adsabs.harvard.edu/#abs/2022ApJS..263...41A A multi-wavelength view of the multiple activity cycles of u03f5 Eridani \|Fuhrmeister B. Coffaro M. et al. \| A&A \| 672-149 \| 2023 \| 2023A&A...672A.149F \| http://ui.adsabs.harvard.edu/#abs/2023A&A...672A.149F 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
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2018-07-20T02:15:37Z/2019-01-19T19:53:02Z
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	2020-02-11T23:00:00Z
Last Update	2025-01-27
Keywords	"chromospheric activity level", "xray activity cycles", "continued ca ii", "spt g0v", "epsilon eri", "iota hor", "short calcium cycle", "xmm newton", "star resembling", "XMM-Newton", "episodically interrupted", "shortest dynamo cycles", "XMM", "iota hor 600myr", "xray cycle"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Prof Beate Stelzer, 2020, 'Properties of X-ray activity cycles on young solar-like stars: epsilon Eridanae', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-eazkxlo