Photometry, spectroscopy, and polarimetry of distant comet C/2014 A4 (SONEAR)

  title={Photometry, spectroscopy, and polarimetry of distant comet C/2014 A4 (SONEAR)},
  author={Oleksandra V. Ivanova and Igor Luk’yanyk and Ludmilla Kolokolova and Himadri Sekhar Das and Marek Hus'arik and Vera K. Rosenbush and Viktor L. Afanasiev and Jan Svoreň and Nikolai Kiselev and Vadim Krushinsky},
  journal={Astronomy \& Astrophysics},
Context. The study of distant comets, which are active at large heliocentric distances, is important for a better understanding of their physical properties and mechanisms of long-lasting activity. Aims. We analyzed the dust environment of the distant comet C/2014 A4 (SONEAR), with a perihelion distance near 4.1 au, using comprehensive observations obtained by different methods. Methods. We present an analysis of spectroscopy, photometry, and polarimetry of comet C/2014 A4 (SONEAR), which were… 

Observations of distant comet C/2011 KP36 (Spacewatch): photometry, spectroscopy, and polarimetry

Aims. The main objective of our study is to obtain new observational results for the active long-period comet C/2011 KP36 (Spacewatch). This comet has unusual orbital properties and moves at

Spectra of comet C/2002 T7 (LINEAR)

We present the results of spectral observations of comet C/2002 T7 (LINEAR) carried out at the 1-m Zeiss-1000 telescope of the Special Astrophysical Observatory (Russia). The spectra were obtained

Optical observations and dust modelling of comet 156P/Russell-LINEAR

Dust Evolution in the Coma of Distant, Inbound Comet C/2017 K2 (PANSTARRS)

C/2017 K2 (PANSTARRS) is an Oort Cloud comet previously observed to be active at heliocentric distances r > 20 au on what is likely its first passage through the inner solar system. We observed the

Small Solar System objects on highly inclined orbits

Context. Less than one percent of the discovered small Solar System objects have highly inclined orbits (i > 60°), and revolve around the Sun on near-polar or retrograde orbits. The origin and

Small Bodies of the Solar System Active at Large Heliocentric Distances: Studies with the 6-Meter Telescope of Sao Ras

  • A. Ivanova
  • Physics, Geology
    Astrophysical Bulletin
  • 2020
Abstract —A detailed study of comets active at large heliocentric distances (greater than 4 au) which enter the Solar System for the first time and are composed of matter in its elementary,

Activity of (6478) Gault during 2019 January 13–March 28

We present the results of photometric observations of active asteroid (6478) Gault performed at heliocentric distances from 2.46 to 2.30 au and geocentric distances from 1.79 to 1.42 au between



Cometary activity of distant object C/2002 VQ94 (LINEAR)

Aims. We have started a program of spectroscopic and photometric investigations of distant active comets in the optical domain. The comets with a significant level of activity–in particular, extended

Photometric investigations of distant comets C/2002 VQ94 (LINEAR) and 29P/Schwassmann-Wachmann-1

We present an analysis of the results of photometric investigations of two distant comets, C/2002 VQ94 (LINEAR) and 29P/Schwassmann-Wachmann-1, obtained with the 6-m telescope of the Special

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

Physical activity of the selected nearly isotropic comets with perihelia at large heliocentric distance

Context. The systematic investigation of comets in a wide range of heliocentric distances can contribute to a better understanding of the physical mechanisms that trigger activity at large distances

Dust tail of the distant comet C/1999 J2 (Skiff)

CCD observations of comet C/1999 J2 (Ski) were made at the Pik Terskol Observatory on September 15, 1999. The 2-m telescope equipped with the two-channel focal reducer of the Max-Plank-Institute for

Retrieval of microphysical characteristics of particles in atmospheres of distant comets from ground-based polarimetry.