| 1. |
- Banaszkiewicz, M, et al.
(författare)
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Modeling of cometary evolution by kinetic theory: Method and first results
- 1996
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Ingår i: EARTH MOON AND PLANETS. - : KLUWER ACADEMIC PUBL. - 0167-9295. ; 72:1-3, s. 203-210
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Physical evolution of Jupiter family (JF) comets is considered as a simultaneous process of erosion and fading. Dynamical effects are Limited to discrete changes of the perihelion distance, that result in changes of the evaporation rate. Assuming that the
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| 2. |
- Biver, N, et al.
(författare)
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Long-term evolution of the outgassing of comet Hale-Bopp from radio observations
- 1997
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Ingår i: EARTH MOON AND PLANETS. - : KLUWER ACADEMIC PUBL. - 0167-9295. ; 78:1-3, s. 5-11
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Tidskriftsartikel (refereegranskat)abstract
- C/1995 O1 (Hale-Bopp) has been observed on a regular basis since August 1995 at millimetre and submillimetre wavelengths using IRAM, JCMT, CSO and SEST radio telescopes. The production rates of eight molecular species (CO, HCN, CH3OH, H2CO, H2S, CS, CH3CN
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| 3. |
- Bockelee-Morvan, D, et al.
(författare)
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C/1995 O1 (Hale-Bopp): Gas production curves and their interpretation
- 1997
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Ingår i: EARTH MOON AND PLANETS. - : KLUWER ACADEMIC PUBL. - 0167-9295. ; 79:1-3, s. 55-77
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Tidskriftsartikel (refereegranskat)abstract
- The discovery of C/1995 O1 (Hale-Bopp) at 7 AU from the Sun provided the first opportunity to follow the activity of a bright comet over a large range of heliocentric distances r(h). Production rates of a number of parent molecules and daughter species ha
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| 4. |
- Lagerkvist, CI, et al.
(författare)
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Physical studies of asteroids .30. The asteroid 153 Hilda
- 1995
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Ingår i: EARTH MOON AND PLANETS. - : KLUWER ACADEMIC PUBL. - 0167-9295. ; 71:3, s. 189-194
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Tidskriftsartikel (refereegranskat)abstract
- The asteroid 153 Kilda was studied by photometric, spectroscopic and polarimetric observations during the apparition in 1992. The rotation period was determined to 5.11 hours with a lightcurve amplitude of 0.05 magnitudes. From our spectrum we find 153 Hi
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| 5. |
- Lagerkvist, CI, et al.
(författare)
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Spin rates of asteroids
- 1996
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Ingår i: EARTH MOON AND PLANETS. - : KLUWER ACADEMIC PUBL. - 0167-9295. ; 72:1-3, s. 219-223
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Tidskriftsartikel (refereegranskat)abstract
- The Asteroid Photometric Catalogue was used to redetermine the rotation periods of all asteroids with data in the catalogue. The quality of the period determinations was divided into five groups. The total number of asteroids studied were 710 and 225 of t
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| 6. |
- Lagerkvist, CI, et al.
(författare)
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UESAC - The Uppsala-ESO survey of asteroids and comets
- 1996
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Ingår i: EARTH MOON AND PLANETS. - : KLUWER ACADEMIC PUBL. - 0167-9295. ; 72:1-3, s. 267-274
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Tidskriftsartikel (refereegranskat)abstract
- The Uppsala-ESO Survey of Asteroids and Comets was undertaken to find previously undetected comets in the vicinity of Jupiter. Over 15000 positions of moving objects have been detected on 74 plates obtained from the European Southern Observatory in Chile
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| 7. |
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| 8. |
- Warell, J, et al.
(författare)
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Dust morphology of the inner coma of C/1995 O1 (Hale-Bopp)
- 1997
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Ingår i: EARTH MOON AND PLANETS. - : KLUWER ACADEMIC PUBL. - 0167-9295. ; 78:1-3, s. 197-203
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Tidskriftsartikel (refereegranskat)abstract
- Dust continuum imaging of comet C/1995 O1 (Hale-Bopp) was carried out with the Swedish Vacuum Solar Telescope (SVST) on La Palma in April, 1997. Images were reduced according to standard procedure, aligned, averaged, navigated and enhanced with azimuthal
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| 9. |
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| 10. |
- Zheng, JQ, et al.
(författare)
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Orbits of short period comets captured from the Oort cloud
- 1996
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Ingår i: EARTH MOON AND PLANETS. - : KLUWER ACADEMIC PUBL. - 0167-9295. ; 72:1-3, s. 45-50
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Oort cloud comets occasionally obtain orbits which take them through the planetary region. The perturbations by the planets are Likely to change the orbit of the comet. We model this process by using a Monte Carlo method and cross sections for orbital cha
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