| Proposal ID | 040472 |
| Title | A search for Be + white dwarf binaries in 50-130 Myr old open clusters |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0404720101 |
| DOI | https://doi.org/10.5270/esa-ase7p3s |
| Principal Investigator, PI | Dr Christian Motch |
| Abstract | We propose to continue our search for Be + white dwarf binaries in a sample ofnearby open clusters with ages of 50-130 Myr. XMM-Newton has discovered a classof Gamma-Cas-like hard Be/X-ray emitters, two of them being found in openclusters in this range of ages. These massive stars could harbour the longsought white dwarfs accreting from the Be circumstellar envelopes. So far nosuch Be + white dwarf system has been confirmed and as long as none is found themodels on which our understanding of massive X-ray binary evolution are basedremain suspect. Making the census of Be + white dwarfs binaries also allows toselect between the different models explaining the Be phenomenon. |
| Publications |
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| 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 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 | 2009-05-02T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "x ray emitters", "white dwarf system", "white dwarfs binary", "white dwarf binary", "xmm newton", "XMM-Newton", "circumstellar envelopes", "XMM", "models explaining", "gamma cas", "massive stars", "130 myr" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Christian Motch, 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 |