Simultaneous visible and near-infrared spectrophotometry of comet Austin 1989c1

Stephen C. Tegler; Humberto Campins; Stephen Larson; Marvin Kleine; Douglas Kelly; Marcia Rieke

doi:10.1086/171753

Simultaneous visible and near-infrared spectrophotometry of comet Austin 1989c₁

Stephen C. Tegler, Humberto Campins, Stephen Larson, Marvin Kleine, Douglas Kelly, Marcia Rieke

Astronomy and Planetary Sciences

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

5 Scopus citations

Abstract

Simultaneous visible and near-infrared spectra of comet Austin were obtained with the 1.5 m and 2.3 m telescopes of the University of Arizona Observatories on 1990 May 16. The visible spectrum obtained with the IHW spectrograph covers the 3126-9490 Å wavelength interval, while the near-infrared spectrum obtained with the germanium spectrometer covers the 9036-12794 Ä wavelength interval. For the first time, we present simultaneous measurements of integrated band fluxes for the CN B ²Σ⁺ - X ²Σ⁺ (violet) and A ²Π⁺ - X ²Σ⁺ (red) systems. We also present a CN spectrum and CN band flux ratios calculated from a fluoresence equilibrium model. From a comparison between the observed and calculated CN spectra and band flux ratios, we find that red system oscillator strengths determined from recent ab initio calculations appropriately describe the radiative properties of CN molecules.

Original language	English (US)
Pages (from-to)	711-716
Number of pages	6
Journal	Astrophysical Journal
Volume	396
Issue number	2
DOIs	https://doi.org/10.1086/171753
State	Published - 1992

Keywords

Molecular processes

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1086/171753

Cite this

@article{740c171b24fe45708c1747c3264ce1e0,

title = "Simultaneous visible and near-infrared spectrophotometry of comet Austin 1989c1",

abstract = "Simultaneous visible and near-infrared spectra of comet Austin were obtained with the 1.5 m and 2.3 m telescopes of the University of Arizona Observatories on 1990 May 16. The visible spectrum obtained with the IHW spectrograph covers the 3126-9490 {\AA} wavelength interval, while the near-infrared spectrum obtained with the germanium spectrometer covers the 9036-12794 {\"A} wavelength interval. For the first time, we present simultaneous measurements of integrated band fluxes for the CN B 2Σ+ - X 2Σ+ (violet) and A 2Π+ - X 2Σ+ (red) systems. We also present a CN spectrum and CN band flux ratios calculated from a fluoresence equilibrium model. From a comparison between the observed and calculated CN spectra and band flux ratios, we find that red system oscillator strengths determined from recent ab initio calculations appropriately describe the radiative properties of CN molecules.",

keywords = "Molecular processes",

author = "Tegler, {Stephen C.} and Humberto Campins and Stephen Larson and Marvin Kleine and Douglas Kelly and Marcia Rieke",

year = "1992",

doi = "10.1086/171753",

language = "English (US)",

volume = "396",

pages = "711--716",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

TY - JOUR

T1 - Simultaneous visible and near-infrared spectrophotometry of comet Austin 1989c1

AU - Tegler, Stephen C.

AU - Campins, Humberto

AU - Larson, Stephen

AU - Kleine, Marvin

AU - Kelly, Douglas

AU - Rieke, Marcia

PY - 1992

Y1 - 1992

N2 - Simultaneous visible and near-infrared spectra of comet Austin were obtained with the 1.5 m and 2.3 m telescopes of the University of Arizona Observatories on 1990 May 16. The visible spectrum obtained with the IHW spectrograph covers the 3126-9490 Å wavelength interval, while the near-infrared spectrum obtained with the germanium spectrometer covers the 9036-12794 Ä wavelength interval. For the first time, we present simultaneous measurements of integrated band fluxes for the CN B 2Σ+ - X 2Σ+ (violet) and A 2Π+ - X 2Σ+ (red) systems. We also present a CN spectrum and CN band flux ratios calculated from a fluoresence equilibrium model. From a comparison between the observed and calculated CN spectra and band flux ratios, we find that red system oscillator strengths determined from recent ab initio calculations appropriately describe the radiative properties of CN molecules.

AB - Simultaneous visible and near-infrared spectra of comet Austin were obtained with the 1.5 m and 2.3 m telescopes of the University of Arizona Observatories on 1990 May 16. The visible spectrum obtained with the IHW spectrograph covers the 3126-9490 Å wavelength interval, while the near-infrared spectrum obtained with the germanium spectrometer covers the 9036-12794 Ä wavelength interval. For the first time, we present simultaneous measurements of integrated band fluxes for the CN B 2Σ+ - X 2Σ+ (violet) and A 2Π+ - X 2Σ+ (red) systems. We also present a CN spectrum and CN band flux ratios calculated from a fluoresence equilibrium model. From a comparison between the observed and calculated CN spectra and band flux ratios, we find that red system oscillator strengths determined from recent ab initio calculations appropriately describe the radiative properties of CN molecules.

KW - Molecular processes

UR - http://www.scopus.com/inward/record.url?scp=11944273446&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=11944273446&partnerID=8YFLogxK

U2 - 10.1086/171753

DO - 10.1086/171753

M3 - Article

AN - SCOPUS:11944273446

SN - 0004-637X

VL - 396

SP - 711

EP - 716

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -