SIMBAD references

2017MNRAS.468.4938K - Mon. Not. R. Astron. Soc., 468, 4938-4943 (2017/July-2)

An intermediate luminosity optical transient (ILOTs) model for the young stellar object ASASSN-15qi.

KASHI A. and SOKER N.

Abstract (from CDS):

We construct a scenario where the outburst of the young stellar object ASASSN-15qi is an intermediate luminosity optical transient (ILOT). In this scenario, a sub-Jupiter young planet was tidally destructed on to a young main-sequence (MS) star. The system is young, and therefore the radius of the planet is larger than its final value; consequently, its density is smaller. The lower density allows the tidal destruction of the young Saturn-like planet on to the MS star of mass ≃2.4 M☉, resulting in the formation of a disc and a gravitationally powered ILOT. Unlike the case of the more energetic ILOT V838 Mon, the mass of the destructed planet is too low to inflate a giant envelope, and hence the merger remnant remains hot. If our suggested model holds, this ILOT possesses two interesting properties: (i) its luminosity and total energy are below those of novae; (ii) it is not as red as other ILOTs. The unusual outburst of ASASSN-15qi - if indeed is an ILOT - further increases the diversity of the already heterogeneous group of ILOTs. We mark the region on the energy-time diagram occupied by such young ILOTs.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - planet-star interactions - stars: flare - stars: pre-main-sequence - stars: pre-main-sequence

Simbad objects: 5

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