A dataset provided by the European Space Agency

Proposal ID 010928
Title The variable WN8 star WR 40 and its ring nebula RCW 58
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0109280101

DOI https://doi.org/10.5270/esa-dfzne23
Principal Investigator, PI Prof Keith Mason
Abstract GT- WR 40 (=HD 96548) is a Wolf Rayet star of spectral type WN8 located ratherfar away from the Galactic plane. Its spectrum is variable (Moffat & Isserstedt1980) and particularly rich in emission lines and P Cygni profiles. The UV linesexhibit changes that are interpreted by Smith et al. (1985) as signs of ashocked stellar wind flow. The star is surrounded by the axisymmetric ringnebula RCW 58 which is classified as containing stellar ejecta, an almost uniquefeature for such a late-type WN star.Ring nebulae offer also the opportunity tolook for the X-ray signature of the interaction of the high speed ejectedmaterial with the interstellar matter.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2002-02-23T23:48:14Z/2002-02-24T06:36:48Z
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 2003-03-16T00:00:00Z
Keywords "xray signature", "ring nebulae", "stellar ejecta", "cygni profiles", "wolf rayet star", "ring nebula rcw", "variable moffat", "emission lines", "galactic plane", "uv lines exhibit", "interstellar matter", "isserstedt 1980", "hd 96548"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Prof Keith Mason, 2003, 'The variable WN8 star WR 40 and its ring nebula RCW 58', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-dfzne23