| Proposal ID | 020173 |
| Title | THE HYADES-AGE OPEN STAR CLUSTERS NGC 6633 AND IC 4756 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201730101 |
| DOI | https://doi.org/10.5270/esa-pwsoo62 |
| Principal Investigator, PI | Dr JOHN PYE |
| Abstract | We propose deep EPIC surveys of the Hyades-age open star clusters NGC 6633 andIC 4756. These are the only such clusters with relatively small angular diameter(less than about 1 deg.) within 800 pc. The 50ks exposures will reach below themedian X-ray luminosities seen in the Hyades, even for dM stars, and (1) allowdefinitive inter- and intra-cluster comparisons; (2) probe the magnetic dynamodown to at least mid-M in each cluster. The NGC 6633 observations willcomplement our ongoing optical programme; we have now surveyed the cluster tolate-M. NGC 6633 is the most iron-poor of the Hyades-age clusters and hence themost crucial when looking for composition effects. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2004-10-10T03:49:22Z/2004-10-14T07:13:36Z |
| 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 | 2005-11-12T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "magnetic dynamo", "optical programme", "EPIC", "median xray luminosities", "hyades age cluster", "NGC 6633", "composition effects", "definitive inter", "dm stars", "angular diameter", "ngc 6633", "hyades age", "intra cluster comparisons", "deep epic surveys", "ic 4756" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr JOHN PYE, 2005, 'THE HYADES-AGE OPEN STAR CLUSTERS NGC 6633 AND IC 4756', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-pwsoo62 |