Catastrophic Disruption of Comet ISON

Riesen, Timm-Emanuel; Keane, Jacqueline V.; Coulson, Iain M.; Kleyna, Jan T.; Sekanina, Zdenek; Kracht, Rainer; Meech, Karen J.; Charnley, Steven B. (2016). Catastrophic Disruption of Comet ISON. Astrophysical journal, 831(2), p. 207. Institute of Physics Publishing IOP 10.3847/0004-637X/831/2/207

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We report submillimeter 450 and 850 μm dust continuum observations for comet C/2012 S1 (ISON) obtained at heliocentric distances 0.31–0.08 au prior to perihelion on 2013 November 28 (rh = 0.0125 au). These observations reveal a rapidly varying dust environment in which the dust emission was initially point-like. As ISON approached perihelion, the continuum emission became an elongated dust column spread out over as much as 60″ (>105 km) in the anti-solar direction. Deconvolution of the November 28.04 850 μm image reveals numerous distinct clumps consistent with the catastrophic disruption of comet ISON, producing ∼5.2 × 1010 kg of submillimeter-sized dust. Orbital computations suggest that the SCUBA-2 emission peak coincides with the cometʼs residual nucleus.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Center for Space and Habitability (CSH)
08 Faculty of Science > Physics Institute > NCCR PlanetS

UniBE Contributor:

Riesen, Timm-Emanuel

Subjects:

500 Science > 520 Astronomy
500 Science > 530 Physics

ISSN:

0004-637X

Publisher:

Institute of Physics Publishing IOP

Language:

English

Submitter:

Danielle Zemp

Date Deposited:

29 Jun 2017 15:55

Last Modified:

29 Jun 2017 15:55

Publisher DOI:

10.3847/0004-637X/831/2/207

BORIS DOI:

10.7892/boris.97151

URI:

https://boris.unibe.ch/id/eprint/97151

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