| |
 |
| Paper: |
An Update on the Quirks of Pulsating, Accreting White Dwarfs |
| Volume: |
493, 19th European Workshop on White Dwarfs |
| Page: |
205 |
| Authors: |
Szkody, P.; Mukadam, A. S.; Gänsicke, B. T.; Hermes, J. J.; Toloza, O. |
| Abstract: |
At the 18th European White Dwarf Workshop, we reported results for
several dwarf novae containing pulsating white dwarfs that had undergone
an outburst in 2006-2007. HST and optical data on the white dwarfs in
GW Lib, EQ Lyn and V455 And all showed different behaviors in the years
following their outbursts. We continued to follow these objects for the
last 2 years, providing timescales of 6-7 years past outburst. All three
reached their optical quiescent values within 4 years but pulsational stability
has not returned. EQ Lyn showed its pre-outburst pulsation period after 3
years, but it continues to show photometric variability that alternates
between pulsation and disk superhump
periods while remaining at quiescence. V455 And has almost reached its
pre-outburst pulsation period, while GW Lib still remains heated and with
a different pulsation spectrum than at quiescence. These results indicate
that asteroseismology provides a unique picture of the effects of outburst
heating on the white dwarf. |
|
|
|
|
|
