[1]唐德林,罗志全,周世奇,等.高振幅δ Scuti变星BE Lyn和DY Peg的周期分析[J].西华师范大学学报(自然科学版),2017,38(01):97-100.[doi:10.16246/j.issn.1673-5072.2017.01.017]
 TANG Delin,LUO Zhiquan,ZHOU Shiqi,et al.Period Change Analysis of the Highamplitude δ Scuti Stars: BE Lyn and DY Peg[J].Journal of China West Normal University(Natural Sciences),2017,38(01):97-100.[doi:10.16246/j.issn.1673-5072.2017.01.017]
点击复制

高振幅δ Scuti变星BE Lyn和DY Peg的周期分析()
分享到:

《西华师范大学学报(自然科学版)》[ISSN:1673-5072/CN:51-1699/N]

卷:
38
期数:
2017年01期
页码:
97-100
栏目:
出版日期:
2017-03-20

文章信息/Info

Title:
Period Change Analysis of the Highamplitude δ Scuti Stars: BE Lyn and DY Peg
作者:
唐德林罗志全周世奇冯丹丹刘鹏
(西华师范大学 物理与空间科学学院,四川 南充637009)
Author(s):
TANG DelinLUO ZhiquanZHOU ShiqiFENG DandanLIU Peng
(College of Physics and Space Sciences,China West Normal University,Nanchong Sichuan 637009,China)
关键词:
高振幅的δ Scuti变星周期变化OC方法BE LynDY Peg
Keywords:
highamplitude δ scuti starperiod changeOC methodBE LynDY Peg
分类号:
P154
DOI:
10.16246/j.issn.1673-5072.2017.01.017
文献标志码:
A
摘要:
收集了高振幅的δ Scuti变星BE Lyn和DY Peg的736个光度极大值时刻(其中BE Lyn155个,DY Peg 581个),并用OC方法分别对其进行周期变化分析。它们的OC图像显示,周期在减小;DY Peg的OC残差表现出类似三角函数变化规律,因此可能存在着一颗伴星,于是结合离散的傅里叶函数拟合并计算出这颗伴星的轨道参数。
Abstract:
736 light maximums of two Highamplitude δ scuti stars are collected including 155 maximums of BE Lyn and 581 maximums of DY Peg.Its periodic changes are analyzed by the OC method.The OC diagrams show that both have a decreasing period,and the residuals of DY Peg has a periodic change similar to that of trigonometric function which is possibly caused by a companion star.Therefore,the orbital parameters of the companion star are computed by the Fourier coefficients.

参考文献/References:


[1]OJA T.The variable star HD 79889[J].Astronomy & Astrophysics,1987,184(1/2):113-115.
[2]RODRGUEZ E,LPEZ DE COCA P,ROLLAND A,et al.Strmgren photometry of the high amplitude δ Scuti star HD 79889[J].Revista Mexicana De Astronomiía Y Astrofiísica,1990,20(1):37-46.
[3]LIU Y,JIANG S,CAO M.Period changes in HD 79889[J].Information Bulletin on Variable Stars,1991,3607.
[4]TANG Q,YANG D W,JIANG SHIYANG.Period changes in HD79889[J].Information Bulletin on Variable Stars,1992,3771
[5]LIU ZONGLI,JIANG SHI YANG.Period change of delta Scuti star HD79889[J].Information Bulletin on Variable Stars,1994,4077.
[6]MORGENROTH O. 77 neue Verderliche[J].Astronomische Nachrichten,1934,252:389-393
[7]QUIGLEY R,AFRICANO J.New ephemeris for the Dwarf Cepheid DY Pegasi[J].Publications of the Astronomical Society of the Pacific,1978,10(540):230-233.
[8]MAHDY H A,SZEIDL B.Period changes of dwarf cepheids,I.CY Aquarii,EH Librae,DY Pegasi[J].Mitt.Sternw.Ungar.Akad,Wiss.,1980,(74):46.
[9]HINTZ E G,JONER M D,IVANUSHKINA M,et al.Period changes in the SX phoenicis star DY pegasi[J].Publications of the Astronomical Society of the Pacific,2004,116(820):543-553.
[10]LI L J,QIAN S B.A period investigation of the SXphoenicis star DY Pegasi[J].Astronomical Journal,2010,139(6):2639-2642.
[11]FU J N,POON H,MARAK K,et al.Pulsations and period changes of the SXphoenicis star DY Pegasi[J].Publications of the Astronomical Society of the Pacific,2009,121(877):251-259.
[12]STERKEN C.The OC diagram:basic procedures[J].Light,2005,335(15):102-103.
[13]KOPALZ.Astrophysics and space science library[M].Dordrecht:D.Reidel Publishing Co,1978:524
[14]BARCZA S,BENK J M.Fundamental parameters of RR Lyrae stars from multicolour photometry and Kurucz atmospheric modelsⅢ.SW And,DH Peg,CU Com and DY Peg[J].Monthly Notices of the Royal Astronomical Society,2014,442(2):1863-1876.

备注/Memo

备注/Memo:

收稿日期:2016-07-06基金项目:国家自然科学基金项目(U1331121)
作者简介:唐德林(1990—),男,四川安岳人,硕士研究生,主要从事天体物理研究。
通信作者:罗志全(1962—),男,四川眉山人,博士,教授,主要从事天体物理研究。E-mail:nczqluo@126.com
引用本文:唐德林,罗志全,周世奇,等.高振幅δScuti变星BE Lyn和DY Peg的周期分析[J].西华师范大学学报(自然科学版),2017,38(1):97-100.[TANG Delin,LUO Zhiquan,ZHOU Shiqi,et al.Period change analysis of the highamplitude δ Scutistars:BE Lyn and DY Peg[J].Journal of China West Normal University(Natural Sciences),2017,38(1):97-100.高振幅δ Scuti变星BE Lyn和DY Peg的周期分析
更新日期/Last Update: 2017-03-20