Differential rotation in Two RS CVn systems: σ Gem and ζ And

Z. Kővári, János Bartus, Levente Kriskovics, K. Oláh, Krisztián Vida, Orsolya Ribárik, Klaus G. Strassmeier

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The differentially rotating convective envelope is an indispensable element of the magnetic dynamo working in RS CVn-systems. Tidal coupling is responsible for maintaining fast rotation, and also the observed high level of magnetic activity. In this work, we compare the physical properties of two well known RS CVn-type binaries, that is the long-period system σ Gem and the ellipsoidal variable ζ And. For the comparison, we use the results obtained from processing time-series Doppler images. We also aim at understanding how differential rotation could be affected by tidal forces in such close binaries.

Original languageEnglish
Title of host publicationProceedings of the International Astronomical Union
Pages197-198
Number of pages2
Volume7
EditionS282
DOIs
Publication statusPublished - Jul 2011

Publication series

NameProceedings of the International Astronomical Union
NumberS282
Volume7
ISSN (Print)17439213
ISSN (Electronic)17439221

Fingerprint

envelopes
physical properties

Keywords

  • stars: activity
  • stars: imaging
  • stars: individual (σ Gem, ζ And)
  • stars: late-type
  • stars: spots

ASJC Scopus subject areas

  • Astronomy and Astrophysics

Cite this

Kővári, Z., Bartus, J., Kriskovics, L., Oláh, K., Vida, K., Ribárik, O., & Strassmeier, K. G. (2011). Differential rotation in Two RS CVn systems: σ Gem and ζ And. In Proceedings of the International Astronomical Union (S282 ed., Vol. 7, pp. 197-198). (Proceedings of the International Astronomical Union; Vol. 7, No. S282). https://doi.org/10.1017/S1743921311027335

Differential rotation in Two RS CVn systems : σ Gem and ζ And. / Kővári, Z.; Bartus, János; Kriskovics, Levente; Oláh, K.; Vida, Krisztián; Ribárik, Orsolya; Strassmeier, Klaus G.

Proceedings of the International Astronomical Union. Vol. 7 S282. ed. 2011. p. 197-198 (Proceedings of the International Astronomical Union; Vol. 7, No. S282).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kővári, Z, Bartus, J, Kriskovics, L, Oláh, K, Vida, K, Ribárik, O & Strassmeier, KG 2011, Differential rotation in Two RS CVn systems: σ Gem and ζ And. in Proceedings of the International Astronomical Union. S282 edn, vol. 7, Proceedings of the International Astronomical Union, no. S282, vol. 7, pp. 197-198. https://doi.org/10.1017/S1743921311027335
Kővári Z, Bartus J, Kriskovics L, Oláh K, Vida K, Ribárik O et al. Differential rotation in Two RS CVn systems: σ Gem and ζ And. In Proceedings of the International Astronomical Union. S282 ed. Vol. 7. 2011. p. 197-198. (Proceedings of the International Astronomical Union; S282). https://doi.org/10.1017/S1743921311027335
Kővári, Z. ; Bartus, János ; Kriskovics, Levente ; Oláh, K. ; Vida, Krisztián ; Ribárik, Orsolya ; Strassmeier, Klaus G. / Differential rotation in Two RS CVn systems : σ Gem and ζ And. Proceedings of the International Astronomical Union. Vol. 7 S282. ed. 2011. pp. 197-198 (Proceedings of the International Astronomical Union; S282).
@inproceedings{dc95b380ac294d5faccf6fe184e270c2,
title = "Differential rotation in Two RS CVn systems: σ Gem and ζ And",
abstract = "The differentially rotating convective envelope is an indispensable element of the magnetic dynamo working in RS CVn-systems. Tidal coupling is responsible for maintaining fast rotation, and also the observed high level of magnetic activity. In this work, we compare the physical properties of two well known RS CVn-type binaries, that is the long-period system σ Gem and the ellipsoidal variable ζ And. For the comparison, we use the results obtained from processing time-series Doppler images. We also aim at understanding how differential rotation could be affected by tidal forces in such close binaries.",
keywords = "stars: activity, stars: imaging, stars: individual (σ Gem, ζ And), stars: late-type, stars: spots",
author = "Z. Kőv{\'a}ri and J{\'a}nos Bartus and Levente Kriskovics and K. Ol{\'a}h and Kriszti{\'a}n Vida and Orsolya Rib{\'a}rik and Strassmeier, {Klaus G.}",
year = "2011",
month = "7",
doi = "10.1017/S1743921311027335",
language = "English",
isbn = "9781107019829",
volume = "7",
series = "Proceedings of the International Astronomical Union",
number = "S282",
pages = "197--198",
booktitle = "Proceedings of the International Astronomical Union",
edition = "S282",

}

TY - GEN

T1 - Differential rotation in Two RS CVn systems

T2 - σ Gem and ζ And

AU - Kővári, Z.

AU - Bartus, János

AU - Kriskovics, Levente

AU - Oláh, K.

AU - Vida, Krisztián

AU - Ribárik, Orsolya

AU - Strassmeier, Klaus G.

PY - 2011/7

Y1 - 2011/7

N2 - The differentially rotating convective envelope is an indispensable element of the magnetic dynamo working in RS CVn-systems. Tidal coupling is responsible for maintaining fast rotation, and also the observed high level of magnetic activity. In this work, we compare the physical properties of two well known RS CVn-type binaries, that is the long-period system σ Gem and the ellipsoidal variable ζ And. For the comparison, we use the results obtained from processing time-series Doppler images. We also aim at understanding how differential rotation could be affected by tidal forces in such close binaries.

AB - The differentially rotating convective envelope is an indispensable element of the magnetic dynamo working in RS CVn-systems. Tidal coupling is responsible for maintaining fast rotation, and also the observed high level of magnetic activity. In this work, we compare the physical properties of two well known RS CVn-type binaries, that is the long-period system σ Gem and the ellipsoidal variable ζ And. For the comparison, we use the results obtained from processing time-series Doppler images. We also aim at understanding how differential rotation could be affected by tidal forces in such close binaries.

KW - stars: activity

KW - stars: imaging

KW - stars: individual (σ Gem, ζ And)

KW - stars: late-type

KW - stars: spots

UR - http://www.scopus.com/inward/record.url?scp=84887366066&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84887366066&partnerID=8YFLogxK

U2 - 10.1017/S1743921311027335

DO - 10.1017/S1743921311027335

M3 - Conference contribution

AN - SCOPUS:84887366066

SN - 9781107019829

VL - 7

T3 - Proceedings of the International Astronomical Union

SP - 197

EP - 198

BT - Proceedings of the International Astronomical Union

ER -