2007ApJ...657.1162M

Query : 2007ApJ...657.1162M

2007ApJ...657.1162M - Astrophys. J., 657, 1162-1171 (2007/March-2)

Large aperture O I 6300 Å observations of comet Hyakutake: implications for the photochemistry of OH and O I production in comet Hale-Bopp.

MORGENTHALER J.P., HARRIS W.M. and COMBI M.R.

Abstract (from CDS):

In previous work (Morgenthaler et al. and Glinski et al.), we proposed a revision to the standard OH photochemistry of van Dishoeck & Dalgarno in order to explain the anomalously bright [O I] 6300 Å emission observed by several instruments in comet C/1995 O1 (Hale-Bopp). In order to test the validity of revisions to the OH photochemistry, we present wide-field Fabry-Pérot [O I] 6300 Å observations of comet C/1996 B2 (Hyakutake) and review similar observations recorded for 1P/Halley and 1989 c1 (Austin). Conventional long-slit spectroscopic observations of several comets in [O I] are also reviewed. The bulk of the evidence suggests that the OH photochemical rates of van Dishoeck & Dalgarno are, on the whole, correct and that the bright [O I] emission observed in Hale-Bopp, particularly at cometocentric distances beyond ∼3x10⁴ km, was unique to that comet, or possibly any comet with such a large production rate.

Abstract Copyright: ∼

Journal keyword(s): comets: individual (Hale-Bopp) - comets: individual (Hyakutake) - comets: individual (Austin) - Comets: Individual: Name: Halley - Instrumentation: Spectrographs - Molecular Data - Molecular Processes

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	NGC 7000	Cl*	20 58 47	+44 19.8						~	427	0

Query : 2007ApJ...657.1162M

Basic data :

NGC 7000 -- Cluster of Stars
Other object types:	`Rad (CTB,GRS,...)`, `HII (1976A&AS,LBN,...)`, `Cl* (2020A&A,Villafranca)`
ICRS coord. (ep=J2000) :	`20 58 47.0 +44 19 48 [ ] E ~`
FK4 coord. (ep=B1950 eq=1950) :	`20 56 59.6 +44 08 06 [ ]`
Gal coord. (ep=J2000) :	`085.5012 -00.9846 [ ]`

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`NGC 7000`	`LBN 373`	`NAME Bermuda Cluster`	`Villafranca O-014 NW`
`CTB 100`	`NAME NORTH AMER NEB`	`NRL 21`	`[DGW65] 138`
`GRS G084.70 -01.00`	`NAME North America`	`SH 2-117`	`[PT56] 49`
`LBN 085.75-01.48`	`NAME North America Nebula`	`Villafranca O-014`

References (427 between 1850 and 2026) (Total 427)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Data at NED - NASA/IPAC Extragalactic Database : NGC 7000

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NGC 7000

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