NDLI: Coma Morphology of Three Non-periodic Comets

Content Provider	Springer Nature Link
Author	Schulz, R. Stüwe, J. A. Erd, C.
Copyright Year	2006
Abstract	The coma morphology and short-term evolution was investigated of three non-periodic comets in retrograde orbits, C/2001 Q4 (NEAT), C/2002 T7 (LINEAR), and C/2003 K4 (LINEAR). All three comets display distinct coma features, which were very different from one comet to the next and remained rather constant in shape during the observational period. A single, broad feature perpendicular to the sun-tail direction dominated the coma of C/2003 K4 in all used filters (B,V,R,I), whereas the coma of Comet C/2002 T7 exhibited different features in blue and red filters. C/2001 Q4 showed rather complex coma morphology with clear short-term variability in coma brightness. Therefore, these non-periodic comets neither show a featureless coma nor any similarities of the features detected. The overall distribution of coma material was investigated from the shape of radial coma profiles averaged around the comet nucleus. For C/2001 Q4 and C/2002 T7, the slopes fitted to the linear part of these profiles are flatter in the blue than in the red, which can be explained by the presence of coma gas. For C/2003 K4 no such difference is indicated in the May observations (r = 2.3 AU), while in July (r = 1.7 AU) the profiles in the B-filter are flatter than in V, R, and I, hence gas contamination was relevant at least in the B filter. The R and I filter images were used to determine approximate Afρ values of each comet as a function of time.
Starting Page	387
Ending Page	397
Page Count	11
File Format	PDF
ISSN	01679295
Journal	Earth, Moon, and Planets
Volume Number	97
Issue Number	3-4
e-ISSN	15730794
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-09-20
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Comets general individual C/2001 Q4 (NEAT) C/2002 T7 (LINEAR) C/2003 K4 (LINEAR) Astrophysics Extraterrestrial Physics, Space Sciences Planetology Astronomy
Content Type	Text
Resource Type	Article
Subject	Astronomy and Astrophysics Space and Planetary Science

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