The influence of atmospheric dust on limb darkening of M-type Mira variables

T. R. Bedding; A. P. Jacob; M. Scholz; P. R. Wood

doi:10.1046/j.1365-8711.2001.04550.x

The influence of atmospheric dust on limb darkening of M-type Mira variables

T. R. Bedding, A. P. Jacob, M. Scholz^*, P. R. Wood

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

We explore the occurrence of dust in M-type Mira atmospheres and its effect on limb darkening under schematic assumptions about dust temperatures and dust particle properties. Dust particles that are thermodynamically coupled to the surrounding gas may form and may affect limb darkening, though only by very little in infrared continuum bandpasses. Dust particles that assume the equilibrium temperature given by the mean intensity of the radiation field only form under rare circumstances. Unexpectedly large or wavelength-dependent infrared continuum radii observed by interferometry are unlikely to be caused by atmospheric dust, except possibly near 1 μm; however, radius measurements may be significantly affected by molecular band contamination.

Original language	English
Pages (from-to)	1487-1496
Number of pages	10
Journal	Monthly Notices of the Royal Astronomical Society
Volume	325
Issue number	4
DOIs	https://doi.org/10.1046/j.1365-8711.2001.04550.x
Publication status	Published - 21 Aug 2001

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title = "The influence of atmospheric dust on limb darkening of M-type Mira variables",

abstract = "We explore the occurrence of dust in M-type Mira atmospheres and its effect on limb darkening under schematic assumptions about dust temperatures and dust particle properties. Dust particles that are thermodynamically coupled to the surrounding gas may form and may affect limb darkening, though only by very little in infrared continuum bandpasses. Dust particles that assume the equilibrium temperature given by the mean intensity of the radiation field only form under rare circumstances. Unexpectedly large or wavelength-dependent infrared continuum radii observed by interferometry are unlikely to be caused by atmospheric dust, except possibly near 1 μm; however, radius measurements may be significantly affected by molecular band contamination.",

keywords = "Circumstellar matter, Dust, extinction, Infrared: stars, Stars: atmospheres, Stars: variables: other",

author = "Bedding, {T. R.} and Jacob, {A. P.} and M. Scholz and Wood, {P. R.}",

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T1 - The influence of atmospheric dust on limb darkening of M-type Mira variables

AU - Bedding, T. R.

AU - Jacob, A. P.

AU - Scholz, M.

AU - Wood, P. R.

PY - 2001/8/21

Y1 - 2001/8/21

N2 - We explore the occurrence of dust in M-type Mira atmospheres and its effect on limb darkening under schematic assumptions about dust temperatures and dust particle properties. Dust particles that are thermodynamically coupled to the surrounding gas may form and may affect limb darkening, though only by very little in infrared continuum bandpasses. Dust particles that assume the equilibrium temperature given by the mean intensity of the radiation field only form under rare circumstances. Unexpectedly large or wavelength-dependent infrared continuum radii observed by interferometry are unlikely to be caused by atmospheric dust, except possibly near 1 μm; however, radius measurements may be significantly affected by molecular band contamination.

AB - We explore the occurrence of dust in M-type Mira atmospheres and its effect on limb darkening under schematic assumptions about dust temperatures and dust particle properties. Dust particles that are thermodynamically coupled to the surrounding gas may form and may affect limb darkening, though only by very little in infrared continuum bandpasses. Dust particles that assume the equilibrium temperature given by the mean intensity of the radiation field only form under rare circumstances. Unexpectedly large or wavelength-dependent infrared continuum radii observed by interferometry are unlikely to be caused by atmospheric dust, except possibly near 1 μm; however, radius measurements may be significantly affected by molecular band contamination.

KW - Circumstellar matter

KW - Dust, extinction

KW - Infrared: stars

KW - Stars: atmospheres

KW - Stars: variables: other

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DO - 10.1046/j.1365-8711.2001.04550.x

M3 - Article

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VL - 325

SP - 1487

EP - 1496

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -

The influence of atmospheric dust on limb darkening of M-type Mira variables

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