112 citations · 883 across the 22 of their papers we have counts for
15 papers · 1 filter
An Improved Model of SiO Maser Emission in Miras
M. D. Gray, M. Wittkowski, M. Scholz +3
We describe a combined dynamic atmosphere and maser propagation model of SiO maser emission in Mira variables. This model rectifies many of the defects of an earlier model of this…
The Keck Aperture Masking Experiment: spectro-interferometry of 3 Mira Variables from 1.1 to 3.8 microns
H. C. Woodruff, M. J. Ireland, P. G. Tuthill +6
We present results from a spectro-interferometric study of the Miras o Cet, R Leo and W Hya obtained with the Keck Aperture Masking Experiment from 1998 Sep to 2002 Jul. The spectr…
Coordinated AMBER and MIDI observations of the Mira variable RR Aql
Iva Karovicova, Markus Wittkowski, David A. Boboltz +1
We have used near- and mid-infrared interferometry to investigate the pulsating atmosphere and the circumstellar environment of the Mira variable RR Aql. Observations were taken wi…
The Mira variable S Ori: Relationships between the photosphere, molecular layer, dust shell, and SiO maser shell at 4 epochs
M. Wittkowski, D. A. Boboltz, K. Ohnaka +2
We present the first multi-epoch study that includes concurrent mid-infrared and radio interferometry of an oxygen-rich Mira star. We obtained mid-infrared interferometry of S Ori…
Abundances in intermediate-mass AGB stars undergoing third dredge-up and hot-bottom burning
J. A. McSaveney, P. R. Wood, M. Scholz +2
High dispersion near-infrared spectra have been taken of seven highly-evolved, variable, intermediate-mass (4-6 Msun) AGB stars in the LMC and SMC in order to look for C, N and O v…
Observable Effects of Dust Formation in Dynamic Atmospheres of M-type Mira Variables
M. J. Ireland, M. Scholz
The formation of dust with temperature-dependent non-grey opacity is considered in a series of self-consistent model atmospheres at different phases of an O-rich Mira variable of m…