[vsnet-campaign-v838mon 395] Re: V838 Mon interpretion in astro-ph/0210463

["Ondrej Pejcha" <opejcha@volny.cz>]

Dear colleagues,

I've read with interest paper of Soker and Tylenda. But I
have a question to general public. Does anyone know how can
the model of Soker and Tylenda produce concentric rings in
the nebula around V838 Mon as observed with HST? Could it be
some early stage of resonance of orbital periods in the
protoplanetary disk caused by some unseen body far away from
the outbursting star? I'm just guessing...

Best regards,

Ondrej Pejcha


----- Original Message -----
From: "Taichi Kato" <tkato@kusastro.kyoto-u.ac.jp>
To: <vsnet-campaign-v838mon@ooruri.kusastro.kyoto-u.ac.jp>
Sent: Tuesday, October 22, 2002 5:57 AM
Subject: [vsnet-campaign-v838mon 394] V838 Mon interpretion
in astro-ph/0210463


>
>    Have a look.
>
> Paper: astro-ph/0210463
> From: Soker Noam <soker@physics.technion.ac.il>
> Date: Mon, 21 Oct 2002 13:45:12 GMT   (9kb)
>
> Title: Main-sequence stellar eruption model for V838 Mon
> Author: Noam Soker (Dept. of Physics, Oranim, Israel),
Romuald Tylenda
>   (Copernicus Astronomical Center, Poland)
> Comments: 9 pages
> \\
>   We propose that the energy source of the outburst of
V838 Mon and similar
> objects is an accretion event, i.e., gravitational energy
rather than
> thermonuclear runaway. We show that the merger of two main
sequence stars, of
> masses 1.5 Mo and 0.1-0.5 Mo can account for the
luminosity, large radius, and
> low effective temperture of V838 Mon and similar objects.
Subsequent cooling
> and gravitational contraction lead such objects to move
along the Hayashi
> limit, as observed. By varying the masses and types of the
merging stars, and
> by considering slowly expanding, rather than hydrostatic,
envelopes, this model
> can account for a large range in luminosities and radii of
such outburst
> events.
> \\ ( http://arXiv.org/abs/astro-ph/0210463 ,  9kb)
>
>

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