Name | 009279 |
Title | The Unusual Wolf-Rayet Star EZ CMa |
URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0092790101 |
DOI | https://doi.org/10.5270/esa-eyxthw9 |
Author | European Space Agency |
Description | EZ CMa is one of the most unusual Wolf-Rayet stars known. It shows well-defined variability in the optical/UV at a period of 3.77 days. The cause of the variability is not known, and it may be due either to binarity or corotating structures in the wind of a single star. We propose to obtain a hign S/N EPIC spectrum of EZ CMa, enabling us to search for the hotter plasma which should be present if it is a binary system and to constrain the nature of the companion. Previous ASCA observations suggest that such hotter plasma is present. |
Publication | No observations found associated with the current proposal |
Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
Temporal Coverage | 2001-10-29T21:28:52Z/2001-10-30T01:03:16Z |
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 | 2002-11-21T00:00:00Z |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, 2002, The Unusual Wolf-Rayet Star Ez Cma, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-eyxthw9 |