Cometary activity in 2060 Chiron at minimum brightness
We present two-colour CCD imaging of 2060 Chiron obtained between 1996 and 1998 with the 2.15 m telescope at CASLEO (San Juan, Argentina). These post-perihelion observations show that Chiron was then near its historical brightness minima, however a coma was clearly detected. The dynamical state of t...
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Autores principales: | , |
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Formato: | Articulo Preprint |
Lenguaje: | Inglés |
Publicado: |
2001
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/2068 http://www.fcaglp.unlp.edu.ar/~scellone/Papers/SC01.pdf |
Aporte de: |
id |
I19-R120-10915-2068 |
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dspace |
institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Ciencias Astronómicas cometas astrofísica |
spellingShingle |
Ciencias Astronómicas cometas astrofísica Silva, Adrián M. Cellone, Sergio Aldo Cometary activity in 2060 Chiron at minimum brightness |
topic_facet |
Ciencias Astronómicas cometas astrofísica |
description |
We present two-colour CCD imaging of 2060 Chiron obtained between 1996 and 1998 with the 2.15 m telescope at CASLEO (San Juan, Argentina). These post-perihelion observations show that Chiron was then near its historical brightness minima, however a coma was clearly detected. The dynamical state of the coma is studied by means of azimuthally averaged surface brightness profiles, which show the signatures of radiation pressure on the dust grain distribution. Aperture photometry shows an achromatic dimming with an amplitude ≈ 0.09 mag in approximately one hour. If due to rotation of the nucleus, this rather high amplitude is used to derive a new value for the nuclear magnitude, m0 ≈ 6.80 mag. |
format |
Articulo Preprint |
author |
Silva, Adrián M. Cellone, Sergio Aldo |
author_facet |
Silva, Adrián M. Cellone, Sergio Aldo |
author_sort |
Silva, Adrián M. |
title |
Cometary activity in 2060 Chiron at minimum brightness |
title_short |
Cometary activity in 2060 Chiron at minimum brightness |
title_full |
Cometary activity in 2060 Chiron at minimum brightness |
title_fullStr |
Cometary activity in 2060 Chiron at minimum brightness |
title_full_unstemmed |
Cometary activity in 2060 Chiron at minimum brightness |
title_sort |
cometary activity in 2060 chiron at minimum brightness |
publishDate |
2001 |
url |
http://sedici.unlp.edu.ar/handle/10915/2068 http://www.fcaglp.unlp.edu.ar/~scellone/Papers/SC01.pdf |
work_keys_str_mv |
AT silvaadrianm cometaryactivityin2060chironatminimumbrightness AT cellonesergioaldo cometaryactivityin2060chironatminimumbrightness |
bdutipo_str |
Repositorios |
_version_ |
1764820464731947008 |