| Name | 067124 |
| Title | The fast-spinning ultra-massive white dwarf companion of HD 49798 |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0671240901 |
| DOI | https://doi.org/10.5270/esa-8f8edsj |
| Author | European Space Agency |
| Description | HD49798/RXJ0648-4418 is an X-ray binary with unique properties: the primary star is the brightest known subdwarf of early spectral type, while the secondary is the fastest rotating (P=13.2 s) and one of the most massive (M>1.2 Msun) white dwarfs currently known. We propose a follow-up study to better understand the properties of the X-ray emission and derive tighter constraints on the masses of this interesting post-common envelope binary. In addition, observations near the time of the eclipse will provide for the first time information on the stellar wind properties of a hot subdwarf. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2011-05-02T13:10:57Z/2011-09-08T04:36:28Z |
| 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 | 2012-10-12T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2012, The Fast-Spinning Ultra-Massive White Dwarf Companion Of Hd 49798, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-8f8edsj |