Analysis of the morphological structures of comet 1P/Halley in the perihelion passages in 1910 and 1986

Autor(es)

Voelzke, M. R.

• Tipo de documento: Artigo Científico
• Fonte: METEORITICS & PLANETARY SCIENCE; v. 54, n. 4, p. 938-945, APR 2019.
• Citações Web of Science: 0

Resumo

This work is based on a systematic analysis of images of comet 1P/Halley collected during its penultimate and ultimate approaches, i.e., in 1910 and 1986. This research has identified, characterized, classified, and compared tail structures of comet 1P/Halley, namely disconnection events (DEs), wavy structures, and solitons. The images of the comet during its 1910 passage, as illustrated in the Atlas of Comet Halley 1910 II (Donn et al. 1986), were compared with those of its approach in 1986 as illustrated in The International Halley Watch Atlas of Large-Scale Phenomena (Brandt et al. 1992). Two onsets of DEs were discovered after the perihelion passage in 1910 with an average value of the corrected cometocentric velocity (Vc) of 57 +/- 15 km s(-1). Ten onsets of DEs were discovered after the perihelion passage in 1986 with an average Vc equal to 130 +/- 37 km s(-1). The mean value of the corrected wavelength lambda c of wavy structures in 1910 is equal to 1.7 +/- 0.1 x 10(6) km, as compared to 2.2 +/- 0.2 x 10(6) km in 1986. The mean value of the amplitude A of the wave in 1910 is equal to 1.4 +/- 0.1 x 10(5) km and 2.8 +/- 0.5 x 10(5) km in 1986. The goals of this research were to report the results obtained from the analysis of the P/Halley's images from 1910 and 1986, to provide empirical data for comparison, and to form the input for future physical/theoretical work. (AU)

• Processo FAPESP: 02/13707-0 - Analise temporal de estruturas morfologicas do cometa p/halley a partir de imagens fotograficas de 1910.
• Beneficiário: Liberdade Saldivar Izaguirre
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica