Results 71 to 80 of about 1,380,342 (182)
Plastic and Reconstructive Surgery, Global Open, 2020 Edward M. Gronet, MD +3 more
doaj +1 more source
High-Resolution Spectroscopy of the Hydrogen-Deficient Binary υ Sgr
Open Astronomy, 2012 The high resolution spectra of hydrogen-deficient binary υ Sgr are analyzed. The atmospheric parameters are Teff = 12300±200 K, log g = 2:5±0:5 and ξt = 5 - 15 kms−1 depending on the element. For Fe II ξt = 9:3 ± 0:3 kms−1. Iron is slightly underabundant
Kipper Tõnu, Klochkova Valentina G.
doaj +1 more source
Open Astronomy, 2011 White dwarf stars are traditionally found to have surface compositions made primarily of hydrogen or helium. However, a new family has recently been uncovered, the so-called hot DQ white dwarfs, which have surface compositions dominated by carbon and ...
Dufour P. +3 more
doaj +1 more source
Conference “Modern Stellar Astronomy 2017”
Open Astronomy, 2017 Here we give a brief overview on the eighth annual conference on Modern Stellar Astronomy held in the Ural FederalUniversity (Ekaterinbourg, Russia) in June 2017, to commemorate the 100th birthday of Prof. K. Barkhatova (1917-1990).
Malkov Oleg Yu., Rastorguev Alexey S.
doaj +1 more source
Results on (UN)Published Wet Runs on Pulsating DB White Dwarfs
Open Astronomy, 2003 I have collected all the WET archival data on the pulsating DB white dwarf stars (DBVs) and re-reduced them. In addition, the WET has recently observed three DBVs.
Handler G.
doaj +1 more source
Long-Term Photometric Behavior of 18 Carbon Stars in Cygnus
Open Astronomy, 2003 The large variety of long-term (secondary) variations is demonstrated on the basis of a 30 year long photographic red magnitude time-series for 18 carbon stars in Cygnus based on the observations carried out with the Baldone Schmidt telescope.
Alksnis A.
doaj +1 more source
Experience in CCD Photometry at the Tartu Observatory
Open Astronomy, 2003 We give overview of the CCD instrumentation and data reduction techniques used at the Tartu Observatory. The first results from photometric observations of the peculiar variable V838 Mon are presented.
Tuvikene T., Kolka I.
doaj +1 more source