Possible chromospheric activity cycles in II peg, UX Ari and V711 Tau
We study the Mount Wilson indices we obtained indirectly from IUE high and low resolution spectra of the RS CVn-type systems II Peg (K2IV), UX Ari (K0IV+G5V) and V711 Tau (K1IV+G5V), extensively observed by IUE from 1978 to 1996. We analyze the activity signatures, which correspond to the primary st...
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todo:paper_0094243X_v1094_n_p640_Buccino2023-10-03T14:55:57Z Possible chromospheric activity cycles in II peg, UX Ari and V711 Tau Buccino, A.P. Mauas, P.J.D. Activity Binaries close Spectroscopic Techniques Ultraviolet We study the Mount Wilson indices we obtained indirectly from IUE high and low resolution spectra of the RS CVn-type systems II Peg (K2IV), UX Ari (K0IV+G5V) and V711 Tau (K1IV+G5V), extensively observed by IUE from 1978 to 1996. We analyze the activity signatures, which correspond to the primary star, with the Lomb-Scargle periodogram. From the analysis of V711 Tau data, we found a possible chromospheric cycle with a period of 18 years and a shorter ∼3 year cycle, which could be associated to a chromospheric flip-flop cycle. The data of II Peg also suggest a chromospheric cycle of ∼21 years and a flip-flop cycle of ∼9 years. Finally, we obtained a possible chromospheric cycle of ∼6 years for UX Ari. © 2009 American Institute of Physics. CONF info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0094243X_v1094_n_p640_Buccino |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Activity Binaries close Spectroscopic Techniques Ultraviolet |
spellingShingle |
Activity Binaries close Spectroscopic Techniques Ultraviolet Buccino, A.P. Mauas, P.J.D. Possible chromospheric activity cycles in II peg, UX Ari and V711 Tau |
topic_facet |
Activity Binaries close Spectroscopic Techniques Ultraviolet |
description |
We study the Mount Wilson indices we obtained indirectly from IUE high and low resolution spectra of the RS CVn-type systems II Peg (K2IV), UX Ari (K0IV+G5V) and V711 Tau (K1IV+G5V), extensively observed by IUE from 1978 to 1996. We analyze the activity signatures, which correspond to the primary star, with the Lomb-Scargle periodogram. From the analysis of V711 Tau data, we found a possible chromospheric cycle with a period of 18 years and a shorter ∼3 year cycle, which could be associated to a chromospheric flip-flop cycle. The data of II Peg also suggest a chromospheric cycle of ∼21 years and a flip-flop cycle of ∼9 years. Finally, we obtained a possible chromospheric cycle of ∼6 years for UX Ari. © 2009 American Institute of Physics. |
format |
CONF |
author |
Buccino, A.P. Mauas, P.J.D. |
author_facet |
Buccino, A.P. Mauas, P.J.D. |
author_sort |
Buccino, A.P. |
title |
Possible chromospheric activity cycles in II peg, UX Ari and V711 Tau |
title_short |
Possible chromospheric activity cycles in II peg, UX Ari and V711 Tau |
title_full |
Possible chromospheric activity cycles in II peg, UX Ari and V711 Tau |
title_fullStr |
Possible chromospheric activity cycles in II peg, UX Ari and V711 Tau |
title_full_unstemmed |
Possible chromospheric activity cycles in II peg, UX Ari and V711 Tau |
title_sort |
possible chromospheric activity cycles in ii peg, ux ari and v711 tau |
url |
http://hdl.handle.net/20.500.12110/paper_0094243X_v1094_n_p640_Buccino |
work_keys_str_mv |
AT buccinoap possiblechromosphericactivitycyclesiniipeguxariandv711tau AT mauaspjd possiblechromosphericactivitycyclesiniipeguxariandv711tau |
_version_ |
1782028232506212352 |