Bima array photodissociation measurements of HCN and CS in comet Hale-Bopp (C/1995 O1)

Lewis E. Snyder; J. M. Veal; L. M. Woodney; M. C.H. Wright; Patrick Palmer; Michael F. A'Hearn; Y. J. Kuan; I. De Pater; J. R. Forster

doi:10.1086/318756

Bima array photodissociation measurements of HCN and CS in comet Hale-Bopp (C/1995 O1)

Lewis E. Snyder^*, J. M. Veal, L. M. Woodney, M. C.H. Wright, Patrick Palmer, Michael F. A'Hearn, Y. J. Kuan, I. De Pater, J. R. Forster

^*Corresponding author for this work

Department of Earth Sciences (Include Institute of Marine Environmental Science and Technology)

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

We present single-field images, cross-correlation spectra, and autocorrelation spectra of HCN and CS from comet Hale-Bopp (C/1995 O1) observed with the BIMA array. Haser modeling of our HCN images yields scale length values that are in excellent agreement with both the theoretical prediction and our previous mosaicked-image value. On the other hand, the same method applied to CS yields a scale length that is ∼ 10 times smaller than the commonly accepted value. Consequently, the CS fraction in comets would be increased with respect to some earlier determinations.

Original language	English
Pages (from-to)	1147-1154
Number of pages	8
Journal	Astronomical Journal
Volume	121
Issue number	2
DOIs	https://doi.org/10.1086/318756
Publication status	Published - 2001 Feb

Keywords

Comets: individual (Hale-Bopp (C/1995 O1))
Molecular processes
Radio emission lines
Techniques: interferometric

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/318756

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title = "Bima array photodissociation measurements of HCN and CS in comet Hale-Bopp (C/1995 O1)",

abstract = "We present single-field images, cross-correlation spectra, and autocorrelation spectra of HCN and CS from comet Hale-Bopp (C/1995 O1) observed with the BIMA array. Haser modeling of our HCN images yields scale length values that are in excellent agreement with both the theoretical prediction and our previous mosaicked-image value. On the other hand, the same method applied to CS yields a scale length that is ∼ 10 times smaller than the commonly accepted value. Consequently, the CS fraction in comets would be increased with respect to some earlier determinations.",

keywords = "Comets: individual (Hale-Bopp (C/1995 O1)), Molecular processes, Radio emission lines, Techniques: interferometric",

author = "Snyder, {Lewis E.} and Veal, {J. M.} and Woodney, {L. M.} and Wright, {M. C.H.} and Patrick Palmer and A'Hearn, {Michael F.} and Kuan, {Y. J.} and {De Pater}, I. and Forster, {J. R.}",

year = "2001",

month = feb,

doi = "10.1086/318756",

language = "English",

volume = "121",

pages = "1147--1154",

journal = "Astronomical Journal",

issn = "0004-6256",

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TY - JOUR

T1 - Bima array photodissociation measurements of HCN and CS in comet Hale-Bopp (C/1995 O1)

AU - Snyder, Lewis E.

AU - Veal, J. M.

AU - Woodney, L. M.

AU - Wright, M. C.H.

AU - Palmer, Patrick

AU - A'Hearn, Michael F.

AU - Kuan, Y. J.

AU - De Pater, I.

AU - Forster, J. R.

PY - 2001/2

Y1 - 2001/2

N2 - We present single-field images, cross-correlation spectra, and autocorrelation spectra of HCN and CS from comet Hale-Bopp (C/1995 O1) observed with the BIMA array. Haser modeling of our HCN images yields scale length values that are in excellent agreement with both the theoretical prediction and our previous mosaicked-image value. On the other hand, the same method applied to CS yields a scale length that is ∼ 10 times smaller than the commonly accepted value. Consequently, the CS fraction in comets would be increased with respect to some earlier determinations.

AB - We present single-field images, cross-correlation spectra, and autocorrelation spectra of HCN and CS from comet Hale-Bopp (C/1995 O1) observed with the BIMA array. Haser modeling of our HCN images yields scale length values that are in excellent agreement with both the theoretical prediction and our previous mosaicked-image value. On the other hand, the same method applied to CS yields a scale length that is ∼ 10 times smaller than the commonly accepted value. Consequently, the CS fraction in comets would be increased with respect to some earlier determinations.

KW - Comets: individual (Hale-Bopp (C/1995 O1))

KW - Molecular processes

KW - Radio emission lines

KW - Techniques: interferometric

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DO - 10.1086/318756

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JO - Astronomical Journal

JF - Astronomical Journal

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Bima array photodissociation measurements of HCN and CS in comet Hale-Bopp (C/1995 O1)

Abstract

Keywords

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