| Proposal ID | 074170 |
| Title | Coronal activity cycles in solar analog stars |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0741700301 |
| DOI | https://doi.org/10.5270/esa-lkaazf4 |
| Principal Investigator, PI | Dr Fabio Favata |
| Abstract | We propose continuation into AO13 of the ongoing long-term program for themonitoring of coronal cycles in a sample of five solar-type stars in threestellar systems. The targets have been monitored continuously since AO1,yielding the first unambiguous evidence of cyclic behavior in the X-ray emissionfrom the coronae of cool stars. Thanks to the long-term monitoring our programis starting to show evidence of the complex behavior of stellar cycles, withsignificant cycle-to-cycle variability becoming apparent. The observationsrequested in AO-13 will allow us to capitalize on our long-term investment ofXMM-Newton observing time and to continue assembling a unique long-term data setthat is likely to remain unmatched for a long time. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2014-04-28T00:30:53Z/2015-04-30T17:55:17Z |
| 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 | 2016-05-18T22:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "term investment", "stellar cycles", "xmm newton", "unambiguous evidence", "solar analog stars", "stellar systems", "XMM-Newton", "term data set", "cool stars", "coronal activity cycles", "xray emission", "monitored continuously", "XMM", "term program", "solar type stars", "coronal cycles" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Fabio Favata, 2016, 'Coronal activity cycles in solar analog stars', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-lkaazf4 |