Observationally-based infrared efficiencies and planck means for circumstellar dust grains

Abstract In this paper the mean relative efficiency factors for absorption of dust grains in the wavelength range from 8 to 22 μm have been derived from IR spectra of the optically thin dust shells surrounding the O-rich supergiants μ Cep, αOri, X Her, and R Cas. The resulting absorption efficiency...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Henning, T. [verfasserIn] Gürtler, J. Dorschner, J.

Format:	Artikel
Sprache:	Englisch

Erschienen:	1983

Schlagwörter:	Dust Wavelength Range Relative Efficiency Absorption Efficiency Efficiency Factor

Anmerkung:	© D. Reidel Publishing Co 1983

Übergeordnetes Werk:	Enthalten in: Astrophysics and space science - Kluwer Academic Publishers, 1968, 94(1983), 2 vom: Aug., Seite 333-349
Übergeordnetes Werk:	volume:94 ; year:1983 ; number:2 ; month:08 ; pages:333-349

Links:	Volltext

DOI / URN:	10.1007/BF00653723

Katalog-ID:	OLC2066149381

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520			\|a Abstract In this paper the mean relative efficiency factors for absorption of dust grains in the wavelength range from 8 to 22 μm have been derived from IR spectra of the optically thin dust shells surrounding the O-rich supergiants μ Cep, αOri, X Her, and R Cas. The resulting absorption efficiency curve has been extrapolated into the near as well as the far infrared regions, having regard to restrictions set by experience. Planck mean efficiency factors have been calculated for the temperature range from 30 to 1500 K. The curveQP(T), which shows a maximum atT=300 K, has been approximated conveniently by a power law on either side of this maximum.
650		4	\|a Dust
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700	1		\|a Dorschner, J. \|4 aut
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title_auth	Observationally-based infrared efficiencies and planck means for circumstellar dust grains
abstract	Abstract In this paper the mean relative efficiency factors for absorption of dust grains in the wavelength range from 8 to 22 μm have been derived from IR spectra of the optically thin dust shells surrounding the O-rich supergiants μ Cep, αOri, X Her, and R Cas. The resulting absorption efficiency curve has been extrapolated into the near as well as the far infrared regions, having regard to restrictions set by experience. Planck mean efficiency factors have been calculated for the temperature range from 30 to 1500 K. The curveQP(T), which shows a maximum atT=300 K, has been approximated conveniently by a power law on either side of this maximum. © D. Reidel Publishing Co 1983
abstractGer	Abstract In this paper the mean relative efficiency factors for absorption of dust grains in the wavelength range from 8 to 22 μm have been derived from IR spectra of the optically thin dust shells surrounding the O-rich supergiants μ Cep, αOri, X Her, and R Cas. The resulting absorption efficiency curve has been extrapolated into the near as well as the far infrared regions, having regard to restrictions set by experience. Planck mean efficiency factors have been calculated for the temperature range from 30 to 1500 K. The curveQP(T), which shows a maximum atT=300 K, has been approximated conveniently by a power law on either side of this maximum. © D. Reidel Publishing Co 1983
abstract_unstemmed	Abstract In this paper the mean relative efficiency factors for absorption of dust grains in the wavelength range from 8 to 22 μm have been derived from IR spectra of the optically thin dust shells surrounding the O-rich supergiants μ Cep, αOri, X Her, and R Cas. The resulting absorption efficiency curve has been extrapolated into the near as well as the far infrared regions, having regard to restrictions set by experience. Planck mean efficiency factors have been calculated for the temperature range from 30 to 1500 K. The curveQP(T), which shows a maximum atT=300 K, has been approximated conveniently by a power law on either side of this maximum. © D. Reidel Publishing Co 1983
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title_short	Observationally-based infrared efficiencies and planck means for circumstellar dust grains
url	https://doi.org/10.1007/BF00653723
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author2	Gürtler, J. Dorschner, J.
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doi_str	10.1007/BF00653723
up_date	2024-07-04T03:52:13.602Z
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