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EARLY EVOLUTION OF DISRUPTED ASTEROID P/2016 G1 (PANSTARRS)

Moreno, F. ; Licandro, J. ; Cabrera-Lavers, A. ; Pozuelos, F. J.

Astrophysical journal. Letters, 2016-08, Vol.826 (2), p.L22-L22 [Periódico revisado por pares]

United States: The American Astronomical Society

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Título:
EARLY EVOLUTION OF DISRUPTED ASTEROID P/2016 G1 (PANSTARRS)
Autor: Moreno, F. ; Licandro, J. ; Cabrera-Lavers, A. ; Pozuelos, F. J.
Assuntos: ALBEDO ; ASTEROIDS ; Asteroids: Individual (P/2016 G1 (PANSTARRS) ; astro-ph.EP ; Astronomy and Astrophysics ; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; Aérospatiale, astronomie & astrophysique ; COSMIC DUST ; Dust ; Fittings ; GALACTIC EVOLUTION ; GEOMETRY ; Mathematical models ; Methods: Numerical ; Minor planets ; minor planets, asteroids: individual (P/2016 G1 (PANSTARRS)) ; Parents ; PARTICLES ; Perihelions ; Physical, chemical, mathematical & earth Sciences ; Physique, chimie, mathématiques & sciences de la terre ; SIMULATION ; Space and Planetary Science ; Space science, astronomy & astrophysics ; STAR EVOLUTION ; Texts
É parte de: Astrophysical journal. Letters, 2016-08, Vol.826 (2), p.L22-L22
Notas: LET34023
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
scopus-id:2-s2.0-84982306957
Descrição: ABSTRACT We present deep imaging observations of activated asteroid P/2016 G1 (PANSTARRS) using the 10.4 m Gran Telescopio Canarias (GTC) from 2016 late April to early June. The images are best interpreted as the result of a relatively short-duration event with an onset of about 350 − 30 + 10 days before perihelion (i.e., around 2016 February 10), starting sharply and decreasing with 24 − 7 + 10 days (HWHM). The results of the modeling imply that the emission of ∼1.7 × 107 kg of dust, if composed of particles of 1 m to 1 cm in radius, is distributed following a power law of index −3 and having a geometric albedo of 0.15. A detailed fitting of a conspicuous westward feature in the head of the comet-like object indicates that a significant fraction of the dust was ejected along a privileged direction right at the beginning of the event, which suggests that the parent body has possibly suffered an impact followed by a partial or total disruption. From the limiting magnitude reachable with the instrumental setup, and assuming a geometric albedo of 0.15 for the parent body, an upper limit for the size of possible fragment debris of ∼50 m in radius is derived.
Editor: United States: The American Astronomical Society
Idioma: Inglês

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EARLY EVOLUTION OF DISRUPTED ASTEROID P/2016 G1 (PANSTARRS)

Moreno, F. ; Licandro, J. ; Cabrera-Lavers, A. ; Pozuelos, F. J.

United States: The American Astronomical Society

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