The Variable Star Z Herculis
نویسندگان
چکیده
منابع مشابه
WZ Sagittae as a DQ Herculis star
We argue that quiescent WZ Sge is a rapidly spinning magnetic rotator in which most of the matter transfered from the secondary is ejected from the system. Assuming that the observed 27.87 s oscillation period is due to the spinning white dwarf we propose that the other observed principal period of 28.96 s is a beat due to reprocessing of the rotating white dwarf beam on plasma blobs in Kepleri...
متن کاملEUVE J0425.6–5714: A Newly Discovered AM Herculis Star
We detected a new AM Her star serendipitously in a 25 day observation with the EUVE satellite. A coherent period of 85.82 min is present in the EUVE Deep Survey imager light curve of this source. A spectroscopic optical identification is made with a 19th magnitude blue star that has H and He emission lines, and broad cyclotron humps typical of a magnetic cataclysmic variable. A lower limit to t...
متن کاملThe Low Velocity Wind from the Circumstellar Matter around the B9v Star Σ Herculis
We have obtained FUSE spectra of σ Her, a nearby binary system, with a main sequence primary, that has a Vega-like infrared excess. We observe absorption in the excited fine structure lines C II at 1037 Å, N II at 1085 Å, and N II at 1086 Å that are blueshifted by as much as ∼30 km/sec with respect to the star. Since these features are considerably narrower than the stellar lines and broader th...
متن کاملASTROMETRIC-SPECTROSCOPIC DETERMINATION OF THE ABSOLUTE MASSES OF THE HgMn BINARY STAR φ HERCULIS
The Mercury-Manganese star φ Her is a well known spectroscopic binary that has been the subject of a recent study by Zavala et al. (2006), in which they resolved the companion using long-baseline interferometry. The total mass of the binary is now fairly well established, but the combination of the spectroscopy with the astrometry has not resulted in individual masses consistent with the spectr...
متن کاملLuminous Red Variable Star
We report photometry and spectroscopy of the evolution of Nova Sagittarii 1994 #1 (V4332 Sagittarii) during outburst. We compare the photometric and spectral evolution of this outburst to known classes of outbursts – including classical novae and outbursts occurring on symbiotic stars – and find this object does not conform to any known class of outburst. The closest match to the behavior of th...
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ژورنال
عنوان ژورنال: Nature
سال: 1896
ISSN: 0028-0836,1476-4687
DOI: 10.1038/054595b0