ISO LWS Observations of H2O from R Cas: A Consistent Model For Its Circumstellar Envelope

被引：0
|
作者：
R.J. Truong-Bach
M.J. Nguyen-Q-Rieu
X.W. Sylvester
T. Barlow
A. Liu
P. Lim
C.J. Omont
机构：
[1] Observatoire de Paris,Department of Physics & Astronomy
[2] DEMIRM,Institut d'Astrophysique Spatiale
[3] University College London,undefined
[4] The LWS Instrument-Dedicated Team,undefined
[5] ISO Science Operations Center,undefined
[6] Institut d'Astrophysique,undefined
[7] Universite Paris XI,undefined
[8] Space Telescope Science Institute,undefined
来源：
Astrophysics and Space Science | 1997年 / 255卷 / 1-2期
关键词：
Physical Parameter; Photodissociation; Radiative Transfer; Cool Process; Consistent Manner;
D O I：
10.1023/A:1001539824590
中图分类号：
学科分类号：
摘要：
We present an ISO LWS 43-197 µm grating spectrum of the oxygen-rich AGB star R Cas. 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 = 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 AGB star.
引用
收藏
页码：325 / 328
页数：3
相关论文
共 50 条
  • [31] THE THERMAL PROFILE AND WATER ABUNDANCE IN THE VENUS MESOSPHERE FROM H2O AND HDO MILLIMETER OBSERVATIONS
    ENCRENAZ, T
    LELLOUCH, E
    CERNICHARO, J
    PAUBERT, G
    GULKIS, S
    SPILKER, T
    ICARUS, 1995, 117 (01) : 162 - 172
  • [32] A MECHANISM FOR PREFERENTIAL H2O LEAKAGE FROM FLUID INCLUSIONS IN QUARTZ, BASED ON TEM OBSERVATIONS
    BAKKER, RJ
    JANSEN, JB
    CONTRIBUTIONS TO MINERALOGY AND PETROLOGY, 1994, 116 (1-2) : 7 - 20
  • [33] Properties of the CO and H2O MOLsphere of the red supergiant Betelgeuse from VLTI/AMBER observations
    Montarges, M.
    Kervella, P.
    Perrin, G.
    Ohnaka, K.
    Chiavassa, A.
    Ridgway, S. T.
    Lacour, S.
    ASTRONOMY & ASTROPHYSICS, 2014, 572
  • [34] Physical conditions in shocked regions of Orion from ground-based observations of H2O
    Cernicharo, J
    Pardo, JR
    González-Alfonso, E
    Serabyn, E
    Phillips, TG
    Benford, DJ
    Mehringer, D
    ASTROPHYSICAL JOURNAL, 1999, 520 (02): : L131 - L134
  • [35] First results of ISO-SWS observations of Saturn: Detection of CO2, CH3C2H, C4H2 and tropospheric H2O
    deGraauw, T
    Feuchtgruber, H
    Bezard, B
    Drossart, P
    Encrenaz, T
    Beintema, DA
    Griffin, M
    Heras, A
    Kessler, M
    Leech, K
    Lellouch, E
    Morris, P
    Roelfsema, PR
    RoosSerote, M
    Salama, A
    Vandenbussche, B
    Valentijn, EA
    Davis, GR
    Naylor, DA
    ASTRONOMY & ASTROPHYSICS, 1997, 321 (02) : L13 - L16
  • [36] The H2O Spectrum of the Massive Protostar AFGL 2136 IRS 1 from 2 to 13 μm at High Resolution: Probing the Circumstellar Disk
    Indriolo, Nick
    Neufeld, D. A.
    Barr, A. G.
    Boogert, A. C. A.
    DeWit, C. N.
    Karska, A.
    Montiel, E. J.
    Richter, M. J.
    Tielens, A. G. G. M.
    ASTROPHYSICAL JOURNAL, 2020, 894 (02):
  • [37] The magnetic field in the star-forming region Cepheus A from H2O maser polarization observations
    Vlemmings, WHT
    Diamond, PJ
    van Langevelde, HJ
    Torrelles, JM
    ASTRONOMY & ASTROPHYSICS, 2006, 448 (02) : 597 - 611
  • [38] Main parameters of turbulence in star-forming regions from observations of H2O maser emission
    Lekht, EE
    Mendoza-Torres, JE
    Silant'ev, NA
    ASTRONOMY REPORTS, 1999, 43 (04) : 209 - 215
  • [39] Ices on Charon: Distribution of H2O and NH3 from New Horizons LEISA observations
    Orea, C. Morea Dalle
    Protopapa, S.
    Cook, J. C.
    Grundy, W. M.
    Cruikshank, D. P.
    Verbiscer, A. J.
    Ennico, K.
    Olkin, C. B.
    Stern, S. A.
    Weaver, H. A.
    Young, L. A.
    ICARUS, 2018, 300 : 21 - 32
  • [40] Distributions of H2O and CO2 ices on Ariel, Umbriel, Titania, and Oberon from IRTF/SpeX observations
    Grundy, W. M.
    Young, L. A.
    Spencer, J. R.
    Johnson, R. E.
    Young, E. F.
    Buie, M. W.
    ICARUS, 2006, 184 (02) : 543 - 555
12345