Effects of moderate abundance changes on the atmospheric structure and colours of Mira variables: research note
<i>Aims. <i/>We study the effects of moderate deviations from solar abundances upon the atmospheric structure and colours of typical Mira variables.<i>Methods. <i/>We present two model series of dynamical opacity-sampling models of Mira variables which have (1) 1/3 solar meta...
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| Main Authors: | , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
21 May 2014
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| In: |
Astronomy and astrophysics
Year: 2014, Volume: 565 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/201323183 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1051/0004-6361/201323183 Verlag, lizenzpflichtig, Volltext: https://www.aanda.org/articles/aa/abs/2014/05/aa23183-13/aa23183-13.html 
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| Author Notes: | M. Scholz, M.J. Ireland, and P.R. Wood |
| Summary: | <i>Aims. <i/>We study the effects of moderate deviations from solar abundances upon the atmospheric structure and colours of typical Mira variables.<i>Methods. <i/>We present two model series of dynamical opacity-sampling models of Mira variables which have (1) 1/3 solar metallicity; and (2) “mild” S-type C/O abundance ratio ([C/O] = 0.9) with typical Zr enhancement (solar +1.0). These series are compared to a previously studied solar-abundance series which has similar fundamental parameters (mass, luminosity, period, radius) that are close to those of <i>o<i/> Cet.<i>Results. <i/>Both series show noticeable effects of abundance upon stratifications and infrared colours but cycle-to-cycle differences mask these effects at most pulsation phases, with the exception of a narrow-water-filter colour near minimum phase. |
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| Item Description: | Gesehen am 26.08.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/201323183 |