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Título: | Early evolution of disrupted asteroid P/2016 G1 (PANSTARRS) |
Autor: | Moreno, Fernando CSIC ORCID; Licandro, J.; Cabrera-Lavers, Antonio; Pozuelos, Francisco José | Palabras clave: | Methods: numerical Minor planets Asteroids: individual (P/2016 G1 (PANSTARRS)) |
Fecha de publicación: | 20-jul-2016 | Editor: | American Astronomical Society Institute of Physics Publishing |
Citación: | Astrophysical Journal Letters 826(2): L22 (2016) | Resumen: | 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 similar to 1.7. x. 10(7) kg of dust, if composed of particles of 1 mu 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 similar to 50 m in radius is derived. | Versión del editor: | http://dx.doi.org/10.3847/2041-8205/826/2/L22 | URI: | http://hdl.handle.net/10261/139413 | DOI: | 10.3847/2041-8205/826/2 | ISSN: | 2041-8205 | E-ISSN: | 2041-8213 |
Aparece en las colecciones: | (IAA) Artículos |
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IAA_2016_ApJ_826(2)_F.Moreno.pdf | 220,44 kB | Adobe PDF | Visualizar/Abrir |
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