Bangs and meteors from the quiet comet 15P/Finlay

0485073 - FZÚ 2018 RIV US eng J - Journal Article
Ye, Q.Z. - Brown, P. G. - Bell, Ch. - Gao, X. - Mašek, Martin - Hui, M.T.
Bangs and meteors from the quiet comet 15P/Finlay.
Astrophysical Journal. Roč. 814, č. 1 (2015), s. 1-10, č. článku 79. ISSN 0004-637X. E-ISSN 1538-4357
R&D Projects: GA MŠMT(CZ) LG13007
EU Projects: European Commission(XE) 283783 - GLORIA
Institutional support: RVO:68378271
Keywords : comets * 15P/Finlay * meteorites * meteors * meteoroids
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.909, year: 2015
Method of publishing: Open access

Jupiter-family comet 15P/Finlay has been reportedly quiet in activity for over a century but has harbored two outbursts during its 2014/2015 perihelion passage. Here we present an analysis of these two outbursts using a set of cometary observations. The outbursts took place between 2014 December 15.4-16.0 UT and 2015 January 15.5-16.0 UT as constrained by ground-based and spacecraft observations. We find a characteristic ejection speed of V-0 = 300-650 m s(-1) for the ejecta of the first outburst and V-0 = 550-750 m s(-1) for that of the second outburst using a Monte Carlo dust model. The mass of the ejecta is calculated to be M-d = (2-3) x 10(5) kg for the first outburst and M-d = (4-5) x 10(5) kg for the second outburst, which. corresponds to less than 10(-7) of the nucleus mass.
Permanent Link: http://hdl.handle.net/11104/0280175