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- W1993931302 abstract "view Abstract Citations (89) References (36) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A CCD Portrait of Comet P/Tempel 2 Jewitt, D. ; Luu, J. Abstract The development of activity in Comet P/Tempel 2 is studied from aphelion (R = 4 AU) to perihelion (R = 1.4 AU) using extensive time-series CCD photometry and CCD spectra. The comet undergoes a profound morphological change at R of about 2-2.5 AU, from a bare nucleus at larger distances to an active comet supporting a coma of gas and dust. Cyclic photometric variations with the period T = 8.95 + or - 0.01 hr. are present at all R, and are attributed to the rotation of the nucleus at this period. The nucleus is prolate (axes a:b:c = 1.9:1:1), a property shared with other nuclei studied using CCD photometry. Novel results include a limit on the bulk density of the nucleus, rho above 300 kg/cu m, and a 20-A-resolution CCD spectrum of the nucleus. Spatially and temporally resolved photometry is used to study the effects of nucleus rotation on the coma. The coma does not share the dramatic photometric variations shown by the nucleus. It possesses a steep surface-brightness distribution, which is attributable to progressive destruction of the coma grains with increasing space exposure. Publication: The Astronomical Journal Pub Date: June 1989 DOI: 10.1086/115118 Bibcode: 1989AJ.....97.1766J Keywords: Charge Coupled Devices; Infrared Photometry; Tempel 2 Comet; Aphelions; Astronomical Spectroscopy; Brightness Distribution; Comet Nuclei; Perihelions; COMETS; TEMPEL 2; CCD METHODS; PHOTOMETRY; SPECTRA; ASTRONOMY; ROTATION; COMET NUCLEI; COMAE; MORPHOLOGY; BRIGHTNESS; EARTH-BASED OBSERVATIONS; ANALYSIS; DATA; MAGNITUDE; SHAPE; DENSITY; PHYSICAL PROPERTIES; WAVES; PRODUCTION RATES; CALCULATIONS; REFLECTIVITY; Astrophysics; Comets; COMETS full text sources ADS |" @default.
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- W1993931302 date "1989-06-01" @default.
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- W1993931302 title "A CCD portrait of Comet P/Tempel 2" @default.
- W1993931302 doi "https://doi.org/10.1086/115118" @default.
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