EX draconis: using eclipses to separate outside-in and inside-out outbursts
EX draconis: using eclipses to separate outside-in and inside-out outbursts
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EX draconis:利用日食来区分由外向内和由内向外的爆发
DOI:
10.1093/mnras/staa1042
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发表时间:
2020
影响因子:
4.8
通讯作者:
Court J
中科院分区:
文献类型:
--
作者:
Court J
We present a study of the eclipses in the accreting white dwarf EX draconis (EX Dra) duringTESSCycles 14 and 15. During both of the two outbursts present in this data set, the eclipses undergo a hysteretic loop in eclipse-depth/out-of-eclipse-flux space. In each case, the direction in which the loops are executed strongly suggests an outburst that is triggered near the inner edge of the accretion disc and propagates outwards. This in turn suggests that the outbursts in EX Dra are ‘inside out’ outbursts; events predicted by previous hydrodynamic studies of dwarf nova accretion discs and confirmed spectroscopically in a number of other accreting white dwarf systems. We therefore propose that the direction of the loop executed in eclipse-depth/out-of-eclipse flux space be used as a test to phenomenologically distinguish between ‘inside out’ and ‘outside in’ outbursts in other eclipsing dwarf novae; a reliable and purely photometric test to differentiate between these phenomena.
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影响因子:
6.5
作者:
L. Pilarčík;M. Wolf;P. Dubovský;K. Hornoch;L. Kotková
通讯作者:
L. Pilarčík;M. Wolf;P. Dubovský;K. Hornoch;L. Kotková
DOI:
10.1086/312834
发表时间:
2000
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
R. Baptista;M. S. Catalan
通讯作者:
M. S. Catalan
DOI:
10.1086/177928
发表时间:
1996
期刊:
The Astrophysical Journal
影响因子:
--
作者:
P. Armitage;M. Livio
通讯作者:
M. Livio
影响因子:
0.5
作者:
A. Sklyanov;E. Pavlenko;O. Antonyuk;A. Sosnovskij;V. Malanushenko;N. Pit;K. Antonyuk;A. N. Khairutdinova;Yu. V. Babina;A. Galeev
通讯作者:
A. Galeev
DOI:
10.1046/j.1365-8711.1999.03001.x
发表时间:
1999
影响因子:
4.8
作者:
Z. Ioannou;T. Naylor;W. Welsh;M. S. Catalan;W. Worraker;N. James
通讯作者:
N. James