Photometric and spectroscopic analysis of Comet 29P/Schwassmann-Wachmann 1 activity

被引：40

作者：

Ivanova, Oleksandra V. ^{[1
]}

Luk'yanyk, Igor V. ^{[2
]}

Kiselev, Nikolay N. ^{[1
]}

Afanasiev, Viktor L. ^{[3
]}

Picazzio, Enos ^{[4
]}

Cavichia, Oscar ^{[5
]}

de Almeida, Amaury A. ^{[4
]}

Andrievsky, Sergei M. ^{[6
]}

机构：

[1] Natl Acad Sci Ukraine, Main Astron Observ, UA-03680 Kiev, Ukraine

[2] Taras Shevchenko Natl Univ Kyiv, Astron Observ, Observatorna Str 3, UA-04053 Kiev, Ukraine

[3] Special Astrophys Observ Russian AS, Nizhnii Arkhyz 369167, Russia

[4] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Dept Astron, Rua Matao 1226 Cidade Univ, BR-05508900 Sao Paulo, SP, Brazil

[5] Univ Fed Itajuba, Inst Fis & Quim, Av BPS,1303 Pinheirinho, BR-37500903 Itajuba, Brazil

[6] Odessa Natl Univ, Dept Astron & Astron Observ, Shevchenko Pk, UA-65014 Odessa, Ukraine

来源：

PLANETARY AND SPACE SCIENCE | 2016年 / 121卷

关键词：

Comets; Comet; 29P/Schwassmann-Wachmann; 1; Photometry; Spectroscopy; NARROW-BAND PHOTOMETRY; SPITZER OBSERVATIONS; DISTANT ACTIVITY; ROTATION PERIOD; DUST TAIL; HALE-BOPP; CO+; AU; NUCLEUS; GRAINS;

D O I：

10.1016/j.pss.2015.12.001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We carried out photometric and spectroscopic observations of comet 29P/Schwassmann-Wachmann 1 at the 6-m BTA telescope (SAO RAS, Russia) and the 1.6-m telescope of the National Laboratory for Astrophysics (LNA, Brazil) on February 20, 2012, and on May 31, 2011, respectively. The spectra revealed the presence of CO+ and N-2(+) emissions in the cometary coma at a distance of 5.25 AU from the Sun. The ratio [N-2(+)]/[CO+] within the projected slit is 0.013. The images obtained through BVR filters showed a bright, dust coma, indicating a high level of activity. We estimated a colour index and a colour excess for the comet. The parameter Af rho, which is used as an indicator of a cometary activity, was measured to be 2584 +/- 50 cm in the reference optical aperture of rho = 10(4) km. The dust production constituted 33 kg/s and 9.3.10(3) kg/s, it was obtained using different methods. We also investigated the morphology of the comet using image enhancement techniques and found two jets in the coma. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：10 / 17

页数：8

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