Astronomical School’s Report, 2013, Volume 9, Issue 1, Pages 10–14

https://doi.org/10.18372/2411-6602.09.1010
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UDC 523.64-864-335

Luminescent continuum and other spectral features of comets C/2007 N3 (Lulin)

Churyumov K.I., Ponomarenko V.A., Kleshchonok V.V., Baransky A.R., Kovalenko N.S.

Kyiv Shevchenko National University, Ukraine

Abstract

The results of the observations and studies of the comet C/2007 N3 (Lulin) on the optical spectra of medium resolution. Spectra were obtained using 23-25.02.2009, the 2nd telescope Zeiss (F1=6.3 m; F2=16 m) at high mountain astronomical station “Terskol” Main Astronomical Observatory, National Academy of Sciences of Ukraine and the Institute of Astronomy of the RAS. With a resolution of λ/Δ λ = 3500 (echelle) obtained 7 spectra of the comet (3780–7600 ÅÅ) with exposure to T=3600 s. The comet was at heliocentric distance r=1.38 AU and geocentric – Δ=0.41 AU had the integral magnitude equal to m1 = 6m, the phase angle was S-O-T=10°, elongation angle S-O-T=165°, position angle α=292°. Identified on the spectral emission lines. The spectra were examined for the presence luminescent continuum. Determined some physical parameters of luminescent continuum and some other physical parameters of the neutral coma of the comet. The dependence of the change in albedo on wavelength was obtained.

Keywords: comet C/2007 N3 (Lulin); spectrum; emission lines; luminescent continuum

References

  1. Kurucz R.L., Furenlid I., Brault J., Testerman L. (1984). Solar flux atlas from 296 to 1300 nm. National Solar Observatory Atlas, Sunspot, New Mexico: National Solar Observatory.
  2. Shul'man L.M. (1970). Distribution of neutral matter density in the cometary atmosphere. Astrometry and Astrophysics (in Russian), 11, 26–30.
  3. Lukyanyk I.V., Churyumov K.I. (2000). Earth, Moon and Planets, 1..
  4. Churyumov K.I., Lukyanyk I.V., Afanasiev V.L., et al. (2002). Exploration of the Comet 19/P Borrelly spectra, obtained with the MPFS and Scorpio of 6-m Telescope on Aug. 2001. Proceedings of Asteroids, Comets, Meteors (Technical University Berlin. – Germany)., 657–660.
  5. Lukyanyk I.V., Churyumov K.I., Afanasiev V.L., et al. (2002). Observation of Spectra and Monochromatic Images of Comet C/2001 A2 (LINEAR). Proceedings of Asteroids, Comets, Meteors (Technical University Berlin. – Germany)., 717–720.
  6. Picazzio E., de Almeida A., Churyumov K.I., Andrievskii S.M., Lukyanyk I.V. (2002). The Optical Spectroscopy and Near Infrared Observations of Comet C/2000 WM1 (Linear) in December, 2001 in Chile and Brazil. Earth, Moon and Planets, 90, 23–32. https://doi.org/10.1023/a:1021594603149
  7. Churyumov K.I., Ponomarenko V.O., Kleshchonok V.V., Mozgova A.M., Kuznetsov M.A. (2012). Optical spectroscopy of comet 103Р/Hartley 2 on October 2010. Astronomical School’s Report, 8(1), 91–95. https://doi.org/10.18372/2411-6602.08.1091
  8. http://ru.wikipedia.org
  9. http://omlc.ogi.edu
  10. Brown M.E., Bouchez A.H., Spinrad H., Jons-Krull C.M. (1996). High-resolution spectra catalogue of cometary emissions lines. A.J., 1197–1202. https://doi.org/10.1086/118090
  11. Cochran A. A high spectral resolution Atlas of comet 122P/de Vico. 2001.
  12. Clairemidi J., Moreels G., Mousis O., Brechignac P. (2008). Identification of anthracene in Comet 1P/Halley. Astronomy & Astrophysics, 245–250. https://doi.org/10.1051/0004-6361:200809497
  13. Clairemidia J., Brechignacb P, Moreelsa G., Pautetc D. (2003). Tentative identification of pyrene as a polycyclic aromatic molecule in UV spectra of comet P/Halley: An emission from 368 to 384 nm. Planetary and Space Science. https://doi.org/10.1016/j.pss.2003.08.029
  14. Krasnopol’sky V.A. (1987). Fizika svecheniya atmosfer planet i komet. M.: Nauka. 304 p.
  15. Osip D.J., Birch P.V. (1995). The Ensemble Properties of Comets: Results from Narrowband Photometry of 85 Comets. 1976-1992. Icarus, 118, 223–270. https://doi.org/10.1006/icar.1995.1190

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