ORBi: Rauer H. - Optical observations of comet Hale-Bopp (C/1995 O1) at large heliocentric distances before perihelion.

Reference : Optical observations of comet Hale-Bopp (C/1995 O1) at large heliocentric distances befo...


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/6373

Title :	Optical observations of comet Hale-Bopp (C/1995 O1) at large heliocentric distances before perihelion.
Language :	English
Author, co-author :	Rauer, H. [> > > >]
	Arpigny, Claude [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
	Boehnhardt, H. [> > > >]
	Colas, F. [> > > >]
	Crovisier, J. [> > > >]
	Jorda, L. [> > > >]
	Kuppers [ > > ]
	Manfroid, Jean [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
	Rembor, K. [> > > >]
	Thomaa [ > > ]
Publication date :	1-Mar-1997
Journal title :	Science
Publisher :	American Association for the Advancement of Science
Volume :	275
Pages :	1909-1912
Audience :	International
ISSN :	0036-8075
e-ISSN :	1095-9203
City :	Washington
Country :	DC
Keywords :	[en] Cometary Dust: Spectroscopy ; Comets: CN
Abstract :	[en] The activity of comet Hale-Bopp (C/1995 O1) was monitored monthly by optical imaging and long-slit spectroscopy of its dust and gas distribution over heliocentric distances of 4.6 to 2.9 AU. The observed band intensities of the NH[SUB]2[/SUB] radical and the H[SUB]2[/SUB]O[SUP]+[/SUP] ion cannot be explained by existing models of fluorescence excitation, warranting a reexamination of the corresponding production rates, at least at large heliocentric distances. Comparing the production rate of the CN radical to its proposed parent, HCN, shows no evidence for the need of a major additional source for CN in Hale-Bopp at large heliocentric distances. The dust and CN production rates are consistent with a significant amount of sublimation occurring from icy dust grains surrounding Hale-Bopp.
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/6373
DOI :	10.1126/science.275.5308.1909
Other URL :	http://cdsads.u-strasbg.fr/abs/1997Sci...275.1909R

File(s) associated to this reference

Fulltext file(s):

	File	Commentary	Version	Size	Access
Restricted access	1909.pdf		Publisher postprint	564.94 kB	Request copy

All documents in ORBi are protected by a user license.

Dspace v1.5