On the period variations of several low declination high amplitude delta Scuti variables
On the period variations of several low declination high amplitude delta Scuti variables
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几个低赤纬高振幅δ Scuti变量的周期变化
DOI:
10.1007/s10509-010-0574-9
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发表时间:
2011-01
影响因子:
1.9
通讯作者:
Fu, J.N.
中科院分区:
文献类型:
--
作者:
Boonyarak, C.;Khokhuntod, P.;Jiang, S.Y.;Fu, J.N.
A 16-inch Schmidt-Cassegrain telescope on the campus of Naresuan University of Thailand and several similar-size telescopes in China equipped with CCD cameras were used to observe 14 high amplitude delta Scuti stars: GP And, CY Aqr, BS Aqr, YZ Boo, AD CMi, VZ Cnc, EH Lib, DY Her, V927 Her, KZ Hya, BE Lyn, V1162 Ori, DY Peg, and CW Ser, between the years 1999 and 2010. Data were also collected from scientific journals and sources on the Internet for these variable stars. Times of light maximum of these delta Scuti stars were then either determined from the observations or obtained from the literature to analyze the pulsation period variations. For the 14 delta Scuti stars we concluded that 7 stars (BS Aqr, CY Aqr, AD CMi, EH Lib, KZ Hya, BE Lyn and DY Peg) are binary or multiple systems. 10 delta Scuti stars are found with periods increasing with rates between 5.86×10−9and 2.34×10−6per year and the other 4 stars (BS Aqr, DY Her, BE Lyn and DY Peg) show periods decreasing with rates of about 10−9to 10−8per year.
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DOI:
10.1002/asna.19342531003
发表时间:
1934-11
期刊:
--
影响因子:
--
作者:
C. Hoffmeister
通讯作者:
C. Hoffmeister
影响因子:
1.9
作者:
C. Boonyarak;P. Khokhuntod;Shi-yang Jiang
通讯作者:
C. Boonyarak;P. Khokhuntod;Shi-yang Jiang
影响因子:
6.5
作者:
F. V. Leeuwen
通讯作者:
F. V. Leeuwen
影响因子:
3.5
作者:
E. Hintz;M. Joner;Chulhee Kim
通讯作者:
E. Hintz;M. Joner;Chulhee Kim
影响因子:
3.5
作者:
Chen, L.;Marak, K.;Li, Y.;Poon, H.;Boonyarak, C.;Fu, J. N.;Zha, Q.;Zhang, Y. P.;Su, J.;Jiang, S. Y.;Khokhuntod, P.;Zhang, C.
通讯作者:
Zhang, C.