Journal Article

Disc wind in the HH 30 binary models

L. V. Tambovtseva and V. P. Grinin

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 387, issue 3, pages 1313-1317
Published in print July 2008 | ISSN: 0035-8711
Published online May 2008 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.13329.x
Disc wind in the HH 30 binary models

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Recent interferometric observations of the young stellar object (YSO) HH 30 have revealed a low-velocity outflow in the12CO J=1–2 molecule line. We present here two models of the low-velocity disc winds with the aim of investigating the origin of this molecular outflow. Following Andlada et al., we treated HH 30 as a binary system. Two cases have been considered: (i) the orbital period P= 53 yr and (ii) P≤ 1 yr. Calculations showed that in the first case the outflow cone had a spiral-like structure due to summing the velocities of the orbital motion and the disc wind. Such a structure contradicts the observations. In the second case, the outflow cone demonstrates a symmetry relatively to the system axis and agrees well with the observations.

Keywords: binaries: close; circumstellar matter; stars: individual: HH 30

Journal Article.  3621 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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