| Name | 020173 |
| Title | THE HYADES-AGE OPEN STAR CLUSTERS NGC 6633 AND IC 4756 |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0201730101 |
| DOI | https://doi.org/10.5270/esa-pwsoo62 |
| Author | European Space Agency |
| Description | We propose deep EPIC surveys of the Hyades-age open star clusters NGC 6633 and IC 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 the median X-ray luminosities seen in the Hyades, even for dM stars, and (1) allow definitive inter- and intra-cluster comparisons; (2) probe the magnetic dynamo down to at least mid-M in each cluster. The NGC 6633 observations will complement our ongoing optical programme; we have now surveyed the cluster to late-M. NGC 6633 is the most iron-poor of the Hyades-age clusters and hence the most crucial when looking for composition effects. |
| Publication | No observations found associated with the current proposal |
| 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 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 | 2005-11-12T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 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 |