Detection of supersoft X-ray emission from GQ Muscae nine years after a nova outburst
Article Abstract:
Nova Muscae 1983 or GQ Mus, a classical nova that first appeared in 1983, is emitting soft black-body-like X-rays. Data collected by the Rosat satellite on Feb 25-26, 1992 confirmed the supersoft nature of these emissions, which probably results from the burning of hydrogen at the surface of a white dwarf star. GQ Mus is the only nova among the 26 discovered since 1983 known to produce soft X-rays due to hydrogen burning. Most novae probably throw off their outer envelopes quickly rather than slowly burning them.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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A case of missing metals
Article Abstract:
Star HD52961, which belongs to the post-asymptomatic-giant-branch (post-AGB) class of metal-deficient stars, lost its metals through a process that took away heavy elements rather than as a part of galactic chemical evolution. Researcher H. Van Winkel and associates found that HD52961's photosphere differs from the star's original composition due to the removal of heavy elements. However, pre-AGB metal deficient stars can still be used to deduce the Milky Way's evolution.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1992
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An energetic stellar outburst accompanied by circumstellar light echoes
Article Abstract:
A high-resolution imaging and polarimetry of the light echoes of the previously unknown variable star V838 monocerotis, which brightened suddenly, is examined. These characteristics indicate that V838 Mon represent an unknown type of stellar outburst, for which there exists no satisfactory explanation.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
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