Inhomogeneities in molecular layers of Mira atmospheres
作者： M. Wittkowski , D. A. Boboltz , M. Ireland , I. Karovicova , K. Ohnaka
DOI: 10.1051/0004-6361/201117411
关键词:
摘要: Abstract : Aims. We investigate the structure and shape of photospheric molecular layers atmospheres four Mira variables. Methods. obtained near-infrared K-band spectro-interferometric observations variables R Cnc, X Hya, W Vel, RW Vel with a spectral resolution about 1500 using AMBER instrument at VLTI. concurrent JHKL photometry Mk II SAAO. Results. The stars in our sample are found to have wavelength-dependent visibility values that consistent earlier low-resolution S Ori predictions dynamic model atmosphere series based on self-excited pulsation models. corresponding uniform disk (UD) diameters show minimum near near-continuum bandpass 2.25 mum. They then increase by up 30% toward H2O band 2.0 mum 70% CO bandheads between 2.29 2.48 wavelength-dependence, their parameters such as visual phase, effective temperature, distances independent estimates. closure phases significantly non-zero all wavelengths indicating deviations from point symmetry.
harvard.edu
core.ac.uk
manchester.ac.uk参考文章(22)
Beverly J. Smith, David Leisawitz, Michael W. Castelaz, Donald Luttermoser, Infrared Light Curves of Mira Variable Stars from COBE DIRBE Data The Astronomical Journal. ,vol. 123, pp. 948- 964 ,(2002) , 10.1086/338647
I. Cherchneff, A chemical study of the inner winds of asymptotic giant branch stars Astronomy and Astrophysics. ,vol. 456, pp. 1001- 1012 ,(2006) , 10.1051/0004-6361:20064827
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
B. Freytag, S. Höfner, Three-dimensional simulations of the atmosphere of an AGB star Astronomy and Astrophysics. ,vol. 483, pp. 571- 583 ,(2008) , 10.1051/0004-6361:20078096
G. Perrin, S. T. Ridgway, B. Mennesson, W. D. Cotton, J. Woillez, T. Verhoelst, P. Schuller, V. Coudé du Foresto, W. A. Traub, R. Millan-Gabet, M. G. Lacasse, Unveiling Mira stars behind the molecules - Confirmation of the molecular layer model with narrow band near-infrared interferometry Astronomy and Astrophysics. ,vol. 426, pp. 279- 296 ,(2004) , 10.1051/0004-6361:20041098
A. Lançon, P. R. Wood, A library of 0.5 to 2.5 m spectra of luminous cool stars Astronomy & Astrophysics Supplement Series. ,vol. 146, pp. 217- 249 ,(2000) , 10.1051/AAS:2000269
S. Ragland, H. Le Coroller, E. Pluzhnik, W. D. Cotton, W. C. Danchi, J. D. Monnier, W. A. Traub, L. A. Willson, J.‐P. Berger, M. G. Lacasse, First Images of R Aquarii and Its Asymmetric H2O Shell The Astrophysical Journal. ,vol. 679, pp. 746- 761 ,(2008) , 10.1086/529573
F. P. Schloerb, R. Millan-Gabet, W. A. Traub, W. A. Traub, N. P. Carleton, K. Souccar, P. Haguenauer, J. D. Monnier, M. Pearlman, D. Malin, J.-P. Berger, G. Wallace, L. A. Willson, W. D. Cotton, F. Malbet, C. H. Townes, M. Brewer, W. C. Danchi, E. Pedretti, P. Kern, P. Labeye, M. G. Lacasse, S. Ragland, K. Perraut, First Surface-resolved Results with the Infrared Optical Telescope Array Imaging Interferometer: Detection of Asymmetries in Asymptotic Giant Branch Stars The Astrophysical Journal. ,vol. 652, pp. 650- 660 ,(2006) , 10.1086/507453
Eugene A. Pluzhnik, Sam Ragland, Herve Le Coroller, William D. Cotton, William C. Danchi, Wesley A. Traub, Lee Anne Willson, THE STRUCTURE AND KINEMATICS OF THE ENVELOPE AROUND U ORI FROM IOTA OBSERVATIONS The Astrophysical Journal. ,vol. 700, pp. 114- 122 ,(2009) , 10.1088/0004-637X/700/1/114
M. J. Ireland, M. Scholz, P. G. Tuthill, P. R. Wood, Pulsation of M-type Mira variables with moderately different mass: search for observable mass effects Monthly Notices of the Royal Astronomical Society. ,vol. 355, pp. 444- 450 ,(2004) , 10.1111/J.1365-2966.2004.08336.X