Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999afz....42...75t&link_type=abstract
Astrofizika, Tom 42, Vyp. 1, p. 75 - 88
Astronomy and Astrophysics
Astronomy
7
Circumstellar Disks: Variables, Circumstellar Disks: Magnetic Fields, Circumstellar Disks: Non-Lte Models
Scientific paper
The mass accretion rate has been estimated; it ranges from M˙α = 10-8 to 10-9Msunyr-1. The gas temperature in this region is about 10000 K. In the close vicinity of the star there exists the hotter region with the temperature of more than 15000 K where the line of the neutral helium 5876 Å observed in the spectra of these stars arises. This region has a small geometrical depth, covers a small part of the visible stellar disk and, apparently, represents places where accreting gas contacts the star. Low values of the rotation velocity in this region (150 - 200 km/s) implies the presence of the magnetic field strong enough to extinguish the rapid rotation of the stream. The magnetic strength in this region is about 150 Gs.
Grinin V. P.
Kozlova O. V.
Tambovtseva L. V.
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