MIKULÁŠEK, Zdeněk, Jan JANÍK, Jiří KRTIČKA, Miloslav ZEJDA and Miroslav JAGELKA. Preliminary Study of the Moderately Cool Chemically Peculiar Star BS Circini. In Kudryavtsev, D. O.; Balega, Yu. Yu.; Romanyuk, I. I. Physics and Evolution of Magnetic and Related Stars. 494th ed. San Francisco: Astronomical Society of the Pacific, 2015, p. 189-196. ISBN 978-1-58381-873-2.
Other formats:   BibTeX LaTeX RIS
Basic information
Original name Preliminary Study of the Moderately Cool Chemically Peculiar Star BS Circini
Name in Czech Předběžná studie vlažné chemicky pekuliární hvězdy BS Circini
Authors MIKULÁŠEK, Zdeněk (203 Czech Republic, guarantor, belonging to the institution), Jan JANÍK (203 Czech Republic, belonging to the institution), Jiří KRTIČKA (203 Czech Republic, belonging to the institution), Miloslav ZEJDA (203 Czech Republic, belonging to the institution) and Miroslav JAGELKA (703 Slovakia, belonging to the institution).
Edition 494. vyd. San Francisco, Physics and Evolution of Magnetic and Related Stars, p. 189-196, 8 pp. 2015.
Publisher Astronomical Society of the Pacific
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 10308 Astronomy
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Publication form printed version "print"
RIV identification code RIV/00216224:14310/15:00080771
Organization unit Faculty of Science
ISBN 978-1-58381-873-2
UT WoS 000366452300023
Keywords (in Czech) BS Cir; fotometrie; CP hvězdy
Keywords in English BS Cir; photometry; CP stars
Tags AKR, rivok
Tags International impact
Changed by Changed by: Ing. Andrea Mikešková, učo 137293. Changed: 28/4/2016 14:26.
Abstract
BS Cir is a representative of moderately cool magnetic chemically peculiar stars, which shows very strong light variations in the Strömgren index c1, indicating large changes in the height of the Balmer jump. We present a two-spot model of the light variations, fitting successfully all the nine light curves obtained in the spectral region 335-750 nm. We also discuss the nature of the observed variations of the intensities of Fe, Cr, Ti, Si, Mg, and RE spectral lines and possible mechanisms matching the observed light variations. It was confirmed that the observed period of BS Cir 2.204d is rising with a rate of dP/dt = 5.4(4)×10-9. The found minor secular changes in the shape of the light curve should be compatible with the period changes caused by precessional motion due to magnetic distortion of the star.
Links
GAP209/12/0217, research and development projectName: Multispektrální proměnnost horkých hvězd a její příčiny
Investor: Czech Science Foundation
PrintDisplayed: 27/4/2024 19:41