| Proposal ID | 084123 |
| Title | Kepler 63: a young star as an enrichment of X-ray activity cycle studies |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0841230201 |
| DOI | https://doi.org/10.57780/esa-9j946na |
| Principal Investigator, PI | Mrs Martina Coffaro |
| Abstract | Chromospheric activity cycles are often found in old stars, but their coronal X-ray counterparts have been difficult to catch. Thanks to XMM-Newton, X-raycycles have been detected in four stars, moving forward an exploration of theparameters space of dynamo cycles (activity level, cycle length, etc.). Twostars with known X-ray activity cycles are relatively young (500Myr), rising thequestion at what age and activity level X-ray cycles set in. We propose here 4short (6ksec) observations of Kepler63. It is younger (250Myr), has higheractivity (logLx=29.02erg/s) and a shorter cycle (1.27yr) that the previoustargets for such dedicated studies. A single XMM-Newton observing season cancover 1/2 of a full cycle with short snapshots. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2019-05-05T07:24:36Z/2020-03-06T15:04:57Z |
| Version | 18.02_20200221_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 | 2021-03-19T00:00:00Z |
| Last Update | 2025-08-04 |
| Keywords | "XMM", "activity loglx", "XMM-Newton", "xray activity cycles", "short snapshots", "xray activity cycle", "single xmm newton", "xmm newton", "shorter cycle", "xray cycles", "moving forward", "etc .. stars", "parameters space", "cycle length", "chromospheric activity cycles" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Mrs Martina Coffaro, 2021, 'Kepler 63: a young star as an enrichment of X-ray activity cycle studies', 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-9j946na |