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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Silva, Adrián M., Cellone, Sergio Aldo
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2001
Materias:
Ciencias Astronómicas
cometas
astrofísica
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/2068
http://www.fcaglp.unlp.edu.ar/~scellone/Papers/SC01.pdf
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-2068
record_format 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

Ejemplares similares