| Name | 040472 |
| Title | A search for Be + white dwarf binaries in 50-130 Myr old open clusters |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0404720101 |
| DOI | https://doi.org/10.5270/esa-ase7p3s |
| Author | European Space Agency |
| Description | We propose to continue our search for Be + white dwarf binaries in a sample of nearby open clusters with ages of 50-130 Myr. XMM-Newton has discovered a class of Gamma-Cas-like hard Be/X-ray emitters, two of them being found in open clusters in this range of ages. These massive stars could harbour the long sought white dwarfs accreting from the Be circumstellar envelopes. So far no such Be + white dwarf system has been confirmed and as long as none is found the models on which our understanding of massive X-ray binary evolution are based remain suspect. Making the census of Be + white dwarfs binaries also allows to select between the different models explaining the Be phenomenon. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2006-08-09T20:26:37Z/2007-01-16T04:47:04Z |
| 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 | 2009-05-02T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2009, A Search For Be + White Dwarf Binaries In 50-130 Myr Old Open Clusters, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ase7p3s |