ISO LWS observations of H2O from R Cas:: A consistent model for its circumstellar envelope

被引：0
|
作者：
Truong-Bach
Nguyen-Q-Rieu
Sylvester, RJ
Barlow, MJ
Liu, XW
Lim, T
Omont, A
Cox, P
Skinner, CJ
机构：
[1] Observ Paris, DEMIRM, F-75014 Paris, France
[2] Univ London Univ Coll, Dept Phys & Astron, London WC1E 6BT, England
[3] ISO Sci Operat Ctr, LWS Instrument Dedicated Team, E-28080 Madrid, Spain
[4] Inst Astrophys, F-75014 Paris, France
[5] Univ Paris 11, Inst Astrophys Spatiale, F-91405 Orsay, France
[6] Space Telescope Sci Inst, Baltimore, MD 21218 USA
来源：
ASTROPHYSICS AND SPACE SCIENCE | 1998年 / 255卷 / 1-2期
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 an ISO LWS 43-197 mu m grating spectrum of the oxygen-rich AGE star R Gas. The spectrum is rich of isolated and blended H2O lines. For their identification and in order to determine the physical parameters of the circumstellar envelope, we have constructed a model which treats radiative transfer, chemical exchange and photodissociation reactions, and various heating and cooling processes in a consistent manner. By fitting the observed line fluxes and using stellar parameters based upon the Hipparcos distance, we derived a mass-loss rate of (M) over dot = 1 10(-6) M. yr(-1) which is close to the value 6 10(-7) M. yr(-1) previously derived for W Hya, another oxygen-rich AGE star.
引用
收藏
页码：325 / 328
页数：4
相关论文
共 50 条
  • [1] ISO LWS Observations of H2O from R Cas: A Consistent Model For Its Circumstellar Envelope
    R.J. Truong-Bach
    M.J. Nguyen-Q-Rieu
    X.W. Sylvester
    T. Barlow
    A. Liu
    P. Lim
    C.J. Omont
    Astrophysics and Space Science, 1997, 255 (1-2) : 325 - 328
  • [2] H2O from R Cas:: ISO LWS-SWS observations and detailed modelling
    Truong-Bach
    Sylvester, RJ
    Barlow, MJ
    Nguyen-Q-Rieu
    Lim, T
    Liu, XW
    Baluteau, JP
    Deguchi, S
    Justtanont, K
    Tielens, AGGM
    ASTRONOMY & ASTROPHYSICS, 1999, 345 (03): : 925 - 935
  • [3] ISO-SWS observations of CO2 and H2O in R cassiopeiae
    Markwick, AJ
    Millar, TJ
    ASTRONOMY & ASTROPHYSICS, 2000, 359 (03) : 1162 - 1168
  • [4] A study of the H2O maser emission from R Cas
    Brand, J
    Baldacci, L
    Engels, D
    COSMIC MASERS: FROM PROTOSTARS TO BLACKHOLES, 2002, (206): : 310 - 313
  • [5] Dynamics of the circumstellar envelope of RT Virginis on the basis of the H2O maser monitoring
    Lekht, EE
    Mendoza-Torres, JE
    Pashchenko, MI
    Berulis, II
    ASTRONOMY & ASTROPHYSICS, 1999, 343 (01) : 241 - 250
  • [6] W Hya through the eye of Odin -: Satellite observations of circumstellar submillimetre H2O line emission
    Justtanont, K
    Bergman, P
    Larsson, B
    Olofsson, H
    Schöier, FL
    Frisk, U
    Hasegawa, T
    Hjalmarson, Å
    Kwok, S
    Olberg, M
    Sandqvist, A
    Volk, K
    Elitzur, M
    ASTRONOMY & ASTROPHYSICS, 2005, 439 (02) : 627 - 633
  • [7] W Hya through the eye of Odin satellite observations of circumstellar submillimetre H2O line emission
    Justtanont, K.
    Bergman, P.
    Larsson, B.
    Olofsson, H.
    Schöier, F.L.
    Frisk, U.
    Hasegawa, T.
    Hjalmarson, A.
    Kwok, S.
    Olberg, M.
    Sandqvist, Aa.
    Volk, K.
    Elitzur, M.
    Astronomy and Astrophysics, 2005, 439 (02): : 627 - 633
  • [8] INDICATIONS OF CIRCUMSTELLAR RING-SYSTEMS FROM SIO AND H2O MASER LINES
    VANBLERKOM, D
    ASTROPHYSICAL JOURNAL, 1978, 223 (03): : 835 - 839
  • [9] First images of R Aquarii and its asymmetric H2O shell
    Ragland, S.
    Le Coroller, H.
    Pluzhnik, E.
    Cotton, W. D.
    Danchi, W. C.
    Monnier, J. D.
    Traub, W. A.
    Willson, L. A.
    Berger, J. -P.
    Lacasse, M. G.
    ASTROPHYSICAL JOURNAL, 2008, 679 (01): : 746 - 761
  • [10] Modelling of circumstellar H2O line emission from m-type AGB stars
    Maercker, M.
    Schoier, F. L.
    Olofsson, H.
    Bergman, P.
    Justtanont, K.
    WHY GALAXIES CARE ABOUT AGB STARS: THEIR IMPORTANCE AS ACTORS AND PROBES, 2007, 378 : 317 - +
12345