INFLUENCE OF SHOCK WAVES ON THE LIGHT CURVES OF LONG-PERIOD VARIABLES

INFLUENCE OF SHOCK WAVES ON THE LIGHT CURVES OF LONG-PERIOD VARIABLES

The shapes of light curves of Mira-type variable stars is analyzed. It is shown that some features of the light curves may be explained by passage of shock waves in the stars' atmospheres. In particular, it is noted that "steps" of the ascending branches of the light curves have very...

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Main Authors: L. S. Kudashkina, G. M. Rudnitskij
Format: Article
Language:English
Published: Odessa I. I. Mechnykov National University 2017-07-01
Series:Odessa Astronomical Publications
Online Access:http://oap.onu.edu.ua/article/view/105754
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spelling doaj-8ae0a855b2304649bf3ef74e9493097b2020-11-25T02:17:10ZengOdessa I. I. Mechnykov National UniversityOdessa Astronomical Publications1810-42152017-07-0171666910.18524/1810-4215.1994.7.105754105754INFLUENCE OF SHOCK WAVES ON THE LIGHT CURVES OF LONG-PERIOD VARIABLESL. S. Kudashkina0G. M. RudnitskijAstronomical Observatory, Odessa State University T.G.Shevchenko Park, Odessa 270014, UkraineThe shapes of light curves of Mira-type variable stars is analyzed. It is shown that some features of the light curves may be explained by passage of shock waves in the stars' atmospheres. In particular, it is noted that "steps" of the ascending branches of the light curves have very similar durations (of the order of 0.1 stellar period) for a big number of miras. This time span is just approximately the time of propagation of shock waves through stars' atmospheres. The numerical simulation of shock wave propagation support the above suggestion and yield time scales that fit the observed light curve features.http://oap.onu.edu.ua/article/view/105754
collection DOAJ
language English
format Article
sources DOAJ
author L. S. Kudashkina
G. M. Rudnitskij
spellingShingle L. S. Kudashkina
G. M. Rudnitskij
INFLUENCE OF SHOCK WAVES ON THE LIGHT CURVES OF LONG-PERIOD VARIABLES
Odessa Astronomical Publications
author_facet L. S. Kudashkina
G. M. Rudnitskij
author_sort L. S. Kudashkina
title INFLUENCE OF SHOCK WAVES ON THE LIGHT CURVES OF LONG-PERIOD VARIABLES
title_short INFLUENCE OF SHOCK WAVES ON THE LIGHT CURVES OF LONG-PERIOD VARIABLES
title_full INFLUENCE OF SHOCK WAVES ON THE LIGHT CURVES OF LONG-PERIOD VARIABLES
title_fullStr INFLUENCE OF SHOCK WAVES ON THE LIGHT CURVES OF LONG-PERIOD VARIABLES
title_full_unstemmed INFLUENCE OF SHOCK WAVES ON THE LIGHT CURVES OF LONG-PERIOD VARIABLES
title_sort influence of shock waves on the light curves of long-period variables
publisher Odessa I. I. Mechnykov National University
series Odessa Astronomical Publications
issn 1810-4215
publishDate 2017-07-01
description The shapes of light curves of Mira-type variable stars is analyzed. It is shown that some features of the light curves may be explained by passage of shock waves in the stars' atmospheres. In particular, it is noted that "steps" of the ascending branches of the light curves have very similar durations (of the order of 0.1 stellar period) for a big number of miras. This time span is just approximately the time of propagation of shock waves through stars' atmospheres. The numerical simulation of shock wave propagation support the above suggestion and yield time scales that fit the observed light curve features.
url http://oap.onu.edu.ua/article/view/105754
work_keys_str_mv AT lskudashkina influenceofshockwavesonthelightcurvesoflongperiodvariables
AT gmrudnitskij influenceofshockwavesonthelightcurvesoflongperiodvariables
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