منابع مشابه
Emission from the Secondary Star in the Old Cv Wz Sge
We present the first detection of the mass donor star in the cataclysmic variable WZ Sge. Phase resolved spectroscopy reveals narrow Balmer emission components from the irradiated secondary star during the 2001 outburst. Its radial velocity curve indicates a systemic velocity of −72± 3 km/s and an apparent velocity amplitude of K2app = 493±10 km/s. Doppler tomography reveals a highly asymmetric...
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Background: Goiter is not frequently seen in the neonatal period.Case report: We report the case of a full-term neonate who was born with anterior neck swelling and observed tosuffer from congenital goiter on examination. Thyroid function tests were within normal limits. Thyroid swellinggradually reduced in size during the 1st week of life. All the cases of congenital goiter t...
متن کاملAstronomy and Astrophysics the Δ Scuti Star Fg Vir. Iv. Mode Identifications and Pulsation Modelling
This paper examines the mode identification and presents pulsation models for FG Vir, for which 24 frequencies have been detected. Histograms of the frequency spacings show peaks which are identified with adjacent radial orders and rotational splitting. Pulsational l values are deduced for eight modes by comparing the observed photometric phase lags between v and y variations with calculated va...
متن کاملObservations of WZ Sge in Superoutburst
We present seven separate Chandra observations of the 2001 superoutburst of WZ Sge. The high-energy outburst was dominated by intense EUV emission lines, which we interpret as boundary layer emission scattered into our line of sight in an accretion disc wind. The direct boundary layer emission was hidden from view, presumably by the accretion disc. The optical outburst orbital hump was detected...
متن کاملOscillation mode identifications and models for the δ Scuti star FG
We present new spectroscopic and photometric time series observations of the δ Scuti star FG Vir. We detect the oscillations via changes in the equivalent widths of hydrogen and metal absorption lines. From the ratios between spectroscopic and photometric amplitudes, we assign l values to the eight strongest oscillation modes. In particular, we identify two radial modes (l = 0) and find that th...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 2000
ISSN: 0074-1809
DOI: 10.1017/s0074180900003041