Outer layers of a carbon star: The view from the Bubble Space Telescope

Hollis R. Johnson; Lisa M. Ensman; David R. Alexander; Eugene H. Avrett; Alexander Brown; Kenneth G. Carpenter; Kjell Eriksson; Bengt Gustafsson; Uffe G. Jørgensen; Philip D. Judge; Jeffrey L. Linsky; Donald G. Luttermoser; Francois Querci; Monique Querci; Richard D. Robinson; Robert F. Wing

doi:10.1086/175525

Outer layers of a carbon star: The view from the Bubble Space Telescope

Hollis R. Johnson, Lisa M. Ensman, David R. Alexander, Eugene H. Avrett, Alexander Brown, Kenneth G. Carpenter, Kjell Eriksson, Bengt Gustafsson, Uffe G. Jørgensen, Philip D. Judge, Jeffrey L. Linsky, Donald G. Luttermoser, Francois Querci, Monique Querci, Richard D. Robinson, Robert F. Wing

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Abstract

To advance our understanding of the relationship between stellar chromospheres and mass loss, which is a common property of carbon stars and other asymptotic giant branch stars we have obtained ultraviolet spectra of the nearby N-type carbon star UU Aur using the Hubble Space Telescope (HST). In this paper we describe the HST observations, identify spectral features in both absorption and emission, and attempt to infer the velocity field in the chromosphere, upper photosphere, and circumstellar envelope from spectral line shifts. A mechanism for producing fluoresced emission to explain a previously unobserved emission line is proposed. Some related ground-based observations are also described.

Original language	English
Pages (from-to)	281-294
Number of pages	14
Journal	Astrophysical Journal
Volume	443
Issue number	1
DOIs	https://doi.org/10.1086/175525
State	Published - Apr 10 1995

Keywords

Stars: carbon
Stars: chromospheres
Stars: mass loss
Ultraviolet: stars

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Johnson, H. R., Ensman, L. M., Alexander, D. R., Avrett, E. H., Brown, A., Carpenter, K. G., Eriksson, K., Gustafsson, B., Jørgensen, U. G., Judge, P. D., Linsky, J. L., Luttermoser, D. G., Querci, F., Querci, M., Robinson, R. D., & Wing, R. F. (1995). Outer layers of a carbon star: The view from the Bubble Space Telescope. Astrophysical Journal, 443(1), 281-294. https://doi.org/10.1086/175525

@article{3af8733f5fa1442d804d991348b1bbab,

title = "Outer layers of a carbon star: The view from the Bubble Space Telescope",

abstract = "To advance our understanding of the relationship between stellar chromospheres and mass loss, which is a common property of carbon stars and other asymptotic giant branch stars we have obtained ultraviolet spectra of the nearby N-type carbon star UU Aur using the Hubble Space Telescope (HST). In this paper we describe the HST observations, identify spectral features in both absorption and emission, and attempt to infer the velocity field in the chromosphere, upper photosphere, and circumstellar envelope from spectral line shifts. A mechanism for producing fluoresced emission to explain a previously unobserved emission line is proposed. Some related ground-based observations are also described.",

keywords = "Stars: carbon, Stars: chromospheres, Stars: mass loss, Ultraviolet: stars",

author = "Johnson, \{Hollis R.\} and Ensman, \{Lisa M.\} and Alexander, \{David R.\} and Avrett, \{Eugene H.\} and Alexander Brown and Carpenter, \{Kenneth G.\} and Kjell Eriksson and Bengt Gustafsson and J{\o}rgensen, \{Uffe G.\} and Judge, \{Philip D.\} and Linsky, \{Jeffrey L.\} and Luttermoser, \{Donald G.\} and Francois Querci and Monique Querci and Robinson, \{Richard D.\} and Wing, \{Robert F.\}",

year = "1995",

month = apr,

day = "10",

doi = "10.1086/175525",

language = "English",

volume = "443",

pages = "281--294",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

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Johnson, HR, Ensman, LM, Alexander, DR, Avrett, EH, Brown, A, Carpenter, KG, Eriksson, K, Gustafsson, B, Jørgensen, UG, Judge, PD, Linsky, JL, Luttermoser, DG, Querci, F, Querci, M, Robinson, RD & Wing, RF 1995, 'Outer layers of a carbon star: The view from the Bubble Space Telescope', Astrophysical Journal, vol. 443, no. 1, pp. 281-294. https://doi.org/10.1086/175525

TY - JOUR

T1 - Outer layers of a carbon star

T2 - The view from the Bubble Space Telescope

AU - Johnson, Hollis R.

AU - Ensman, Lisa M.

AU - Alexander, David R.

AU - Avrett, Eugene H.

AU - Brown, Alexander

AU - Carpenter, Kenneth G.

AU - Eriksson, Kjell

AU - Gustafsson, Bengt

AU - Jørgensen, Uffe G.

AU - Judge, Philip D.

AU - Linsky, Jeffrey L.

AU - Luttermoser, Donald G.

AU - Querci, Francois

AU - Querci, Monique

AU - Robinson, Richard D.

AU - Wing, Robert F.

PY - 1995/4/10

Y1 - 1995/4/10

N2 - To advance our understanding of the relationship between stellar chromospheres and mass loss, which is a common property of carbon stars and other asymptotic giant branch stars we have obtained ultraviolet spectra of the nearby N-type carbon star UU Aur using the Hubble Space Telescope (HST). In this paper we describe the HST observations, identify spectral features in both absorption and emission, and attempt to infer the velocity field in the chromosphere, upper photosphere, and circumstellar envelope from spectral line shifts. A mechanism for producing fluoresced emission to explain a previously unobserved emission line is proposed. Some related ground-based observations are also described.

AB - To advance our understanding of the relationship between stellar chromospheres and mass loss, which is a common property of carbon stars and other asymptotic giant branch stars we have obtained ultraviolet spectra of the nearby N-type carbon star UU Aur using the Hubble Space Telescope (HST). In this paper we describe the HST observations, identify spectral features in both absorption and emission, and attempt to infer the velocity field in the chromosphere, upper photosphere, and circumstellar envelope from spectral line shifts. A mechanism for producing fluoresced emission to explain a previously unobserved emission line is proposed. Some related ground-based observations are also described.

KW - Stars: carbon

KW - Stars: chromospheres

KW - Stars: mass loss

KW - Ultraviolet: stars

UR - https://www.scopus.com/pages/publications/11944272131

U2 - 10.1086/175525

DO - 10.1086/175525

M3 - Article

AN - SCOPUS:11944272131

SN - 0004-637X

VL - 443

SP - 281

EP - 294

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

Outer layers of a carbon star: The view from the Bubble Space Telescope

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Keywords

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