Gli indici di colore come indicatori del meccanismo che governa la luminosità di una cometa: luce solare riflessa o fluorescenza

Details Gli indici di colore come indicatori del meccanismo che governa la luminosità di una cometa: luce solare riflessa o fluorescenza Gli indici di colore come indicatori del meccanismo che governa la luminosità di una cometa: luce solare riflessa o fluorescenza

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003asuai...2...48m&link_type=abstract

Astronomia. La rivista dell'Unione Astrofili Italiani (ISSN 0392-2308), N. 2, p. 48 - 49 (marzo-aprile 2003)

Astronomy and Astrophysics

Astronomy

Cometary Comae, Photometry, Comets: Brightness

Scientific paper

Colour indexes derived by aperture photometry on cometary comae in VRI Johnson/Cousins bands give a way to understand the mechanism dominating the brightness of a comet: reflected sunlight or fluorescence. Considering that V band is dominated by C2 gas emission and that R and I on the contrary have few gas contamination, the colour index determined as a function of the coma diameter is a key parameter. In an hypothetical purely dusty coma we expect a constant colour index close to the solar one and nearly constant with aperture. If gas is present we can have a differentiation within the coma and a non constant colour index, in this case the colour index is "bluer" in the external halo. The effect was clearly observed in C/2001 A2 and C/2000 WM1.

Affiliated with

Also associated with

No associations

Rating

Gli indici di colore come indicatori del meccanismo che governa la luminosità di una cometa: luce solare riflessa o fluorescenza does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gli indici di colore come indicatori del meccanismo che governa la luminosità di una cometa: luce solare riflessa o fluorescenza, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gli indici di colore come indicatori del meccanismo che governa la luminosità di una cometa: luce solare riflessa o fluorescenza will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1881972