2006ApJ...643..567R


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.29CET21:27:37

2006ApJ...643..567R - Astrophys. J., 643, 567-572 (2006/May-3)

A BIMA array survey of molecules in comets LINEAR (C/2002 T7) and NEAT (C/2001 Q4).

REMIJAN A.J., FRIEDEL D.N., DE PATER I., HOGERHEIJDE M.R., SNYDER L.E., A'HEARN M.F., BLAKE G.A., DICKEL H.R., FORSTER J.R., KRAYBILL C., LOONEY L.W., PALMER P. and WRIGHT M.C.H.

Abstract (from CDS):

We present an interferometric search for large molecules, including methanol (CH3OH), methyl cyanide (CH3CN), ethyl cyanide (CH3CH2CN), ethanol (CH3CH2OH), and methyl formate (CH3OCHO), in comets LINEAR (C/2002 T7) and NEAT (C/2001 Q4) with the Berkeley-Illinois-Maryland Association (BIMA) array. We also searched for transitions of the simpler molecules CS, SiO, HNC, HN13C, and 13CO. We detected transitions of CH3OH and CS around comet LINEAR and one transition of CH3OH around comet NEAT within a synthesized beam of ∼20". We calculated the total column density and production rate of each molecular species using the variable temperature and outflow velocity (VTOV) model recently described by Friedel et al. Considering the molecular production rate ratios with respect to water, comet T7 LINEAR is more similar to comet Hale-Bopp, while comet Q4 NEAT is more similar to comet Hyakutake. It is unclear, however, due to such a small sample size, whether there is a clear distinction between a Hale-Bopp and Hyakutake class of comet or whether comets have a continuous range of molecular production rate ratios.

Abstract Copyright:

Journal keyword(s): comets: individual (LINEAR (C/2002 T7)) - Comets: Individual: Name: NEAT (C/2001 Q4) - Molecular Processes - Radio Lines: Solar System - Techniques: Interferometric

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 4C 01.02 QSO 01 08 38.7712667820 +01 35 00.318317679   18.54 18.39 19.05   ~ 459 1
2 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 935 2
3 ICRF J092703.0+390220 Sy1 09 27 03.0139516273 +39 02 20.847968628   17.17 17.00 16.486   ~ 922 1

    Equat.    Gal    SGal    Ecl

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2020.01.29-21:27:37

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