A dataset provided by the European Space Agency

Proposal ID 030060
Title Towards an understanding of the Ofp phenomenon
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DOI https://doi.org/10.5270/esa-6ctxcce
Principal Investigator, PI Dr Yael Naze
Abstract We propose to observe the peculiar Of?p star HD191612 for 3*20 ks withXMM-Newton. In the visible domain, this star displays spectacular line profilevariations alternating between two different spectral states (O6-O8) with aperiod of virgul540d. A monitoring of this peculiar object in the X-ray domain willprovide crucial information for constraining its nature. The requested XMM dataare part of a multiwavelength observing campaign that also includes coordinatedobservations in the UV (FUSE) and visible (ground-based telescopes) ranges.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2005-04-05T13:03:17Z/2005-10-08T08:54:21Z
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 2006-10-28T00:00:00Z
Keywords "HD191612", "uv fuse", "XMM", "ofp phenomenon", "requested xmm data", "xray domain", "visible ground", "XMM-Newton", "visible domain", "o6 o8", "telescopes ranges", "star hd191612", "includes coordinated", "xmm newton"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Yael Naze, 2006, 'Towards an understanding of the Ofp phenomenon', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-6ctxcce