Low-excitation atomic gas around evolved stars: ISO observations of C-rich nebulae

被引:0
|
作者
Fong, D [1 ]
Meixner, M [1 ]
Sutton, EC [1 ]
Castro-Carrizo, A [1 ]
Bujarrabal, V [1 ]
Latter, WB [1 ]
Tielens, AGGM [1 ]
Kelly, DM [1 ]
机构
[1] Univ Illinois, Dept Astron, Urbana, IL 61801 USA
关键词
D O I
暂无
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present ISO LWS and SWS observations of far-infrared atomic fine structure lines in 12 carbon-rich evolved stars from the AGB phase to the formation of the PN. Our analysis shows that photodissociation and not shocks dominates the evolution of the circumstellar envelope by transforming the initially molecular AGB envelopes into the atomic gas found in PPNe and PNe. Atomic mass estimates are also derived.
引用
收藏
页码:403 / 408
页数:6
相关论文
共 26 条
  • [1] Low-excitation atomic gas around evolved stars I. ISO observations of C-rich nebulae
    Fong, D
    Meixner, M
    Castro-Carrizo, A
    Bujarrabal, V
    Latter, WB
    Tielens, AGGM
    Kelly, DM
    Sutton, EC
    [J]. ASTRONOMY & ASTROPHYSICS, 2001, 367 (02) : 652 - 673
  • [2] Low-excitation atomic gas around evolved stars II. ISO observations of O-rich nebulae
    Castro-Carrizo, A
    Bujarrabal, V
    Fong, D
    Meixner, M
    Tielens, AGGM
    Latter, WB
    Barlow, MJ
    [J]. ASTRONOMY & ASTROPHYSICS, 2001, 367 (02): : 674 - 693
  • [3] Low-excitation atomic gas in PPNe: ISO observations of FIR line emission in O-rich objects
    Castro-Carrizo, A
    Bujarrabal, V
    Fong, D
    Meixner, M
    Tielens, AGGM
    Latter, WB
    Barlow, MJ
    [J]. POST-AGB OBJECTS AS A PHASE OF STELLAR EVOLUTION, 2001, 265 : 409 - 412
  • [4] ISO LWS observations of evolved stars and nebulae
    Barlow, MJ
    [J]. ASTROPHYSICS AND SPACE SCIENCE, 1997, 251 (1-2) : 15 - 24
  • [5] ISO LWS Observations of Evolved Stars and Nebulae
    M. J. Barlow
    [J]. Astrophysics and Space Science, 1997, 251 : 15 - 24
  • [6] EXCITING STARS OF LOW-EXCITATION PLANETARY AND DIFFUSE NEBULAE
    KALER, JB
    [J]. ASTROPHYSICAL JOURNAL, 1976, 210 (03): : 843 - 852
  • [7] ISO LWS Observations of Evolved Stars and Nebulae (R)
    Barlow, M. J.
    [J]. Astrophysics and Space Science, 251 (1-2):
  • [8] Hints of the Existence of C-rich Massive Evolved Stars
    Quintana-Lacaci, Guillermo
    Cernicharo, Jose
    Agundez, Marcelino
    Pablo Fonfria, Jose
    Velilla-Prieto, Luis
    Sanchez Contreras, Carmen
    Bujarrabal, Valentin
    Castro-Carrizo, Arancha
    Alcolea, Javier
    [J]. ASTROPHYSICAL JOURNAL, 2019, 876 (02):
  • [9] SPECTRA OF CENTRAL STARS IN LOW-EXCITATION PLANETARY-NEBULAE
    KONDRATEVA, LN
    [J]. ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS, 1994, 20 (05): : 644 - 647
  • [10] Ground based MIR observations of C-rich proto planetary nebulae
    Takashi, M
    Kataza, H
    Okamoto, YK
    Sako, S
    Honda, M
    Onaka, T
    Okada, Y
    Yamashita, T
    [J]. MASS-LOSING PULSATING STARS AND THEIR CIRCUMSTELLAR MATTER: OBSERVATIONS AND THEORY, 2003, 283 : 251 - 252