Analysis of a δ Scuti spectroscopic binary: CQ Lyncis

Autor:	N. Ginestet, Fabien Carrier, Stéphane Udry, Y. Debernardi, J.-M. Carquillat
Rok vydání:	2002
Předmět:	Photometry (optics) Physics Stars Space and Planetary Science Binary number Spectral density Astronomy and Astrophysics Astrophysics Orbital period Spectral line
Zdroj:	Astronomy & Astrophysics. 390:1027-1032
ISSN:	1432-0746 0004-6361
Popis:	CQ Lyn is a new double-lined spectroscopic binary, composed of an Am Scuti and a solar-like star, with an orbital period of 12.50736 d and a zero-eccentricity. Physical parameters of both stars are well constrained. The characteristics of the primary are the following: M = 1:714 M, Te = 6760 K, log L=L = 1:097 and logg = 3:85 dex. Power spectra of Hipparcos photometry and Coravel radial velocities show multi-period pulsation behaviour. Three frequencies are identified: f1 = 8:86725, f2 = 8:81150 and f3 = 8:91007 c/d and are assumed to be l = 2 f -modes split by rotation, considering their pulsation constants Q1= 0:0356, Q2= 0:0359 and Q3= 0:0355 d. Two combination oscillations are also present in the power spectrum at frequency f1+f2 and f2+f3.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f9777260bb2dc838cd1095487f293d3a https://doi.org/10.1051/0004-6361:20020769 Zobrazit plný text záznamu