Bibcode
Kidger, M.; Licandro, J.; Sabalisk, N.; Goetz, B.; Santos, P.; Serra-Ricart, M.; Bellot Rubio, L.; Casas, R.; Gomez, A.; Jorda, L.; Tozzi, G.-P.; Osip, D.; Boehnhardt, H.; West, R.
Bibliographical reference
American Astronomical Society, 191st AAS Meeting, #88.01; Bulletin of the American Astronomical Society, Vol. 29, p.1356
Advertised on:
12
1997
Citations
1
Refereed citations
1
Description
Narrow band near infrared images of comet 1995 O1 (Hale-Bopp), where
obtained in day-time, during April 1997, using the 1.52m Carlos Sanchez
Telescope, at Teide Observatory (Tenerife, Spain), by the Comet Hale
Bopp European Team. The comet was observed continuously for up to 11
hours hours each day on a total of 15 days. This allows us to obtain a
complete map of the rotation of the comet's nucleus, and the evolution
of the structures observed in the inner coma. These observations were
part of a long-term monitoring campaign of the comet's inner-coma
morphology which started in August 1995. A long-enduring polar fan
structure was observed on 76 nights pre-perihelion, from March to
September 1996, in broadband R CCD images obtained with the 0.82m IAC-80
and 0.5m Mons telescopes at Teide Observatory. These images allow us to
obtain the spin axis orientation of the comet with considerable
precision. Preliminary results, combining these data sets, are presented
on the rotation period, pole orientation, and evolution of the active
zones.