A dataset provided by the European Space Agency

Name 069080
Title Coronal cycles in Solar-type stars
URL

http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0690800301
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0690800401
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0690800501
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0690800601
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0690800701
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0690800801
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0690800901
http://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0690801101

DOI 10.5270/esa-gtbbx50
Author Dr Fabio Favata
Description The present program to study for the first time solar-like cycles in the X-ray emission of stars similar to our Sun has been ongoing since XMM s AO-1. Five targets in three stellar systems have been monitored at regular cadence for a full decade, providing for the first time clear evidence of long-term cycles in the coronal activity of normal stars, with cycle amplitudes of up to an order of magnitude in X-ray luminosity. The present proposal requests continuation of the ongoing monitoring program into XMM AO-11, needed to progress toward full characterization of the coronal cycle for our targets and the understanding of the cycle-to-cycle variations.
Publication A solar-like magnetic cycle on the mature K-dwarf 61 Cygni A (HD 201091) . Boro Saikia, S., Jeffers, S. V., et all. . A&A . 594-29 . 2016 . 2016A&A...594A..29B ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
Fifteen years in the high-energy life of the solar-type star HD 81809. XMM-Newton observations of a stellar activity cycle . Orlando, S., Favata, F., et all. . A&A . 605-19 . 2017 . 2017A&A...605A..19O ,
Deconvolving the HD 81809 Binary: Rotational and Activity Evidence for a Subgiant with a Sun-like Cycle . Egeland, Ricky, . ApJ . 866-80 . 2018 . 2018ApJ...866...80E ,
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2012-06-07T00:38:40Z/2013-04-29T13:09:55Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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 2014-05-23T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2014-05-23T00:00:00Z, 069080, 17.56_20190403_1200. https://doi.org/10.5270/esa-gtbbx50