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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Analysis of total visual and CCD V-broadband observations of Comet C/1995 O1 (Hale-Bopp): 1995-2001

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Author(s):
de Almeida, A. A. [1] ; Boczko, R. [1] ; Sanzovo, G. C. [2] ; Sanzovo, D. Trevisan [2]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Dept Astron, Inst Astron Geophys & Atmospher Sci, BR-05508090 Sao Paulo - Brazil
[2] Univ Estadual Londrina, Dept Phys, Lab Mol Astrophys, BR-86051970 Londrina, PR - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Advances in Space Research; v. 44, n. 3, p. 335-339, AUG 4 2009.
Web of Science Citations: 1
Abstract

We developed a general method for determination of water production rates from groundbased visual observations and applied it to Comet Hale-Bopp. Our main objective is to extend the method to include total visual magnitude observations obtained with CCD detector and V filter in the analysis of total visual magnitudes. We compare the CCD V-broadband careful observations of Liller {[}Liller, W. Pre-perihelion CCD photometry of Comet 1995 01 (Hale-Bopp). Planet. Space Sci. 45, 1505-1513, 1997; Liller, W. CCD photometry of Comet C/1995 O1 (Hale-Bopp): 1995-2000. Int. Comet Quart. 23(3), 93-97, 2001] with the total visual magnitude observations from experienced international observers found in the International Comet Quarterly (ICQ) archive. A data set of similar to 400 CCD observations covering about the same 6 years time span of the similar to 12,000 ICQ selected total visual magnitude observations were used in the analysis. A least-square method applied to the water production rates, yields power laws as a function of the heliocentric distances for the pre- and post-perihelion phases. The average dimension of the nucleus as well as its effective active area is determined and compared with values published in the literature. (C) 2009 COSPAR. Published by Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 04/01215-1 - Groundbased investigation of COMET 67p/Churyumov-Gerasimenko, target of the spacecraft mission Rosetta
Grantee:Amaury Augusto de Almeida
Support Opportunities: Research Grants - Meeting - Abroad