The atmospheric structure and fundamental parameters of the red supergiants AH Scorpii, UY Scuti, and KW Sagittarii
作者： B. Arroyo-Torres , M. Wittkowski , J. M. Marcaide , P. H. Hauschildt
DOI: 10.1051/0004-6361/201220920
关键词: Astronomy 、 K band 、 Hydrostatic equilibrium 、 Physics 、 Spectral line 、 Astrophysics 、 Red supergiant
摘要: Aims. We present the atmospheric structure and fundamental properties of red supergiants (RSGs) AH Sco, UY Sct, KW Sgr based on VLTI/AMBER observations. Methods. carried out spectro-interferometric observations in near-infrared K band (1.92–2.47 μm) with instrument spatial spectral resolutions 3 milliarcsec 1500, respectively, compared data to a new grid hydrostatic PHOENIX model atmospheres. Results. In our visibility data, we observe molecular layers water CO extended For uniform disk modeling, size increases at centered 1.9 μm 10% 25% bandheads 2.3–2.5 20%–35% respect near-continuum bandpass around 2.20 μm. Our spectra are well reproduced by The continuum values consistent limb-darkened as predicted models. However, visibilities do not predict large observed extensions layers. Comparing models, estimate Rosseland-mean photospheric angular diameters be 5.81 ± 0.15 mas, 5.48 0.10 3.91 0.25 respectively. Together distance
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E.M.L Humphreys, M.D. Gray, D. Field, J.A. Yates, G. Bowen, A Model for the Variability of SiO Masers in Mira Variables Astrophysics and Space Science. ,vol. 251, pp. 215- 218 ,(1997) , 10.1023/A:1000753126584
S. Ekström, C. Georgy, P. Eggenberger, G. Meynet, N. Mowlavi, A. Wyttenbach, A. Granada, T. Decressin, R. Hirschi, U. Frischknecht, C. Charbonnel, A. Maeder, Grids of stellar models with rotation - I. Models from 0.8 to 120 M⊙ at solar metallicity (Z = 0.014) Astronomy and Astrophysics. ,vol. 537, pp. 1- 18 ,(2012) , 10.1051/0004-6361/201117751
T. Szeifert, B. Wolff, M. Wittkowski, J. P. Aufdenberg, T. Driebe, V. Roccatagliata, Tests of stellar model atmospheres by optical interferometry. IV. VINCI interferometry and UVES spectroscopy of Menkar Astronomy and Astrophysics. ,vol. 460, pp. 855- 864 ,(2006) , 10.1051/0004-6361:20066032
Patricia Whitelock, Freddy Marang, Michael Feast, Infrared colours for Mira-like long-period variables found in the Hipparcos Catalogue Monthly Notices of the Royal Astronomical Society. ,vol. 319, pp. 728- 758 ,(2002) , 10.1046/J.1365-8711.2000.03743.X
Takashi Tsuji, Infrared Spectra and Visibilities as Probes of the Outer Atmospheres of Red Supergiant Stars The Astrophysical Journal. ,vol. 645, pp. 1448- 1463 ,(2006) , 10.1086/504585
C. Paladini, G. T. van Belle, B. Aringer, J. Hron, P. Reegen, C. J. Davis, T. Lebzelter, Determination of the stellar parameters of C-rich hydrostatic stars from spectro-interferometric observations Astronomy and Astrophysics. ,vol. 533, ,(2011) , 10.1051/0004-6361/201116538
David A. Boboltz, Markus Wittkowski, Joint VLBA/VLTI Observations of the Mira Variable S Orionis The Astrophysical Journal. ,vol. 618, pp. 953- 961 ,(2005) , 10.1086/426107
Peter H. Hauschildt, E. Baron, Numerical solution of the expanding stellar atmosphere problem Journal of Computational and Applied Mathematics. ,vol. 109, pp. 41- 63 ,(1999) , 10.1016/S0377-0427(99)00153-3
R. J. Sylvester, C. J. Skinner, M. J. Barlow, Silicate and hydrocarbon emission from Galactic M supergiants Monthly Notices of the Royal Astronomical Society. ,vol. 301, pp. 1083- 1094 ,(1998) , 10.1046/J.1365-8711.1998.02078.X
S. Robbe-Dubois, A. Roussel, P. Salinari, E. Tatulli, G. Zins, M. Accardo, B. Acke, K. Agabi, E. Altariba, B. Arezki, E. Aristidi, C. Baffa, J. Behrend, T. Blöcker, S. Bonhomme, S. Busoni, F. Cassaing, J.-M. Clausse, J. Colin, C. Connot, A. Delboulbé, A. Domiciano de Souza, T. Driebe, P. Feautrier, D. Ferruzzi, T. Forveille, E. Fossat, R. Foy, D. Fraix-Burnet, A. Gallardo, E. Giani, C. Gil, A. Glentzlin, M. Heiden, M. Heininger, O. Hernandez Utrera, K.-H. Hofmann, D. Kamm, M. Kiekebusch, S. Kraus, D. Le Contel, J.-M. Le Contel, T. Lesourd, B. Lopez, M. Lopez, Y. Magnard, A. Marconi, G. Mars, G. Martinot-Lagarde, P. Mathias, P. Mège, J.-L. Monin, D. Mouillet, D. Mourard, E. Nussbaum, K. Ohnaka, J. Pacheco, C. Perrier, Y. Rabbia, S. Rebattu, F. Reynaud, A. Richichi, A. Robini, M. Sacchettini, D. Schertl, M. Schöller, W. Solscheid, A. Spang, P. Stee, P. Stefanini, M. Tallon, I. Tallon-Bosc, D. Tasso, L. Testi, F. Vakili, O. von der Lühe, J.-C. Valtier, M. Vannier, N. Ventura, R. G. Petrov, F. Malbet, G. Weigelt, P. Antonelli, U. Beckmann, Y. Bresson, A. Chelli, M. Dugué, G. Duvert, S. Gennari, L. Glück, P. Kern, S. Lagarde, E. Le Coarer, F. Lisi, F. Millour, K. Perraut, P. Puget, F. Rantakyrö, AMBER, the near-infrared spectro-interferometric three-telescope VLTI instrument Astronomy and Astrophysics. ,vol. 464, pp. 1- 12 ,(2007) , 10.1051/0004-6361:20066496