2016ApJ...829...82B

Query : 2016ApJ...829...82B

2016ApJ...829...82B - Astrophys. J., 829, 82-82 (2016/October-1)

Outbursts in two new cool pulsating DA white dwarfs.

BELL K.J., HERMES J.J., MONTGOMERY M.H., GENTILE FUSILLO N.P., RADDI R., GANSICKE B.T., WINGET D.E., DENNIHY E., GIANNINAS A., TREMBLAY P.-E., CHOTE P. and WINGET K.I.

Abstract (from CDS):

The unprecedented extent of coverage provided by Kepler observations recently revealed outbursts in two hydrogen-atmosphere pulsating white dwarfs (DAVs) that cause hours-long increases in the overall mean flux of up to 14%. We have identified two new outbursting pulsating white dwarfs in K2, bringing the total number of known outbursting white dwarfs to four. EPIC 211629697, with {T}_eff=10,780±140 K and log g=7.94±0.08, shows outbursts recurring on average every 5.0 days, increasing the overall flux by up to 15%. EPIC 229227292, with {T}_eff=11,190±170 K and log g=8.02±0.05, has outbursts that recur roughly every 2.4 days with amplitudes up to 9%. We establish that only the coolest pulsating white dwarfs within a small temperature range near the cool, red edge of the DAV instability strip exhibit these outbursts.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: activity - stars: individual: (EPIC 211629697, EPIC 229227292, EPIC 211891315) - stars: oscillations (including pulsations) - white dwarfs - white dwarfs

Simbad objects: 71

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Number of rows : 71
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SDSS J041814.33+150837.0 WD* 04 18 14.3355208704 +15 08 37.014492768           DA 9 0
2 GD 71 WD* 05 52 27.6198591816 +15 53 13.228887444 11.675 12.783 13.032 13.169 13.337 DA1.5 407 0
3 GALEX J081420.4+140231 WD* 08 14 20.4279674616 +14 02 31.221854124           DA 5 0
4 SDSS J081611.28+200311.8 WD* 08 16 11.2829635272 +20 03 11.858607468           DA 7 0
5 GALEX J081727.3+170848 WD* 08 17 27.3985089576 +17 08 48.153559308           DA 10 0
6 GALEX J081737.3+165159 WD* 08 17 37.3389196224 +16 51 59.509870416           DA 11 0
7 GALEX J081915.3+195211 WD* 08 19 15.3669030192 +19 52 10.807671108           DA 8 0
8 GALEX J082048.8+191428 WD* 08 20 48.8177837496 +19 14 29.171710860           DA 9 0
9 GALEX J082612.7+102736 WD* 08 26 12.7168040016 +10 27 36.625510332           DA 5 0
10 GALEX J082634.6+132439 WD* 08 26 34.5958931736 +13 24 39.210998220           DA 13 0
11 GALEX J082703.8+183324 WD* 08 27 03.8351136696 +18 33 24.404573880           DA 12 0
12 GALEX J082825.8+183200 WD* 08 28 25.8865809240 +18 31 59.749040352           DA 9 0
13 GALEX J083149.9+154835 WD* 08 31 49.9167890472 +15 48 35.857475640           DA 9 0
14 GALEX J083204.0+142943 WD* 08 32 03.9841213848 +14 29 42.471775716           DA 15 0
15 SDSS J083308.63+215114.4 WD* 08 33 08.6468382744 +21 51 14.552798580           DA 6 0
16 SDSS J083313.73+212917.1 WD* 08 33 13.7361668856 +21 29 17.281303008           DA 11 0
17 SDSS J083649.97+201544.2 WD* 08 36 49.9755465168 +20 15 44.226674244           DA 5 0
18 GALEX J083656.3+173439 WD* 08 36 56.4096315624 +17 34 40.467579240           DA 5 0
19 GALEX J083956.8+165420 WD* 08 39 56.8039863600 +16 54 21.537530604           DA 5 0
20 GALEX J084019.5+132450 WD* 08 40 19.5414151248 +13 24 49.604722380           DA 11 0
21 LP 425-348 WD* 08 40 54.0377862253 +14 57 10.440198020       18.7   DA 20 0
22 GALEX J084434.3+145549 WD* 08 44 34.3324773648 +14 55 49.677334716           DA 11 0
23 GALEX J084850.2+233922 WD* 08 48 50.2754292504 +23 39 21.956777028           DA 3 0
24 GALEX J085010.7+223538 WD* 08 50 10.8523983504 +22 35 37.919319684           DA 5 0
25 GALEX J085048.2+101801 WD* 08 50 48.1899397752 +10 18 01.036929024           DA 5 0
26 GALEX J085251.8+230740 WD* 08 52 51.8877730128 +23 07 40.465028748           DA 6 0
27 GALEX J085346.1+220213 WD* 08 53 46.1006860008 +22 02 12.908017896           DA 5 0
28 GALEX J085608.4+191246 WD* 08 56 08.4571738224 +19 12 45.386259048           DA 9 0
29 GALEX J085641.1+155205 WD* 08 56 41.0940833160 +15 52 06.324913884           DA 5 0
30 SDSS J085648.33+185804.9 WD* 08 56 48.3364811928 +18 58 04.821463704           DA 14 0
31 GALEX J085743.6+232834 WD* 08 57 43.6212519192 +23 28 33.419419140   19.1   19.4   DA 6 0
32 LB 9074 WD* 09 00 41.0906337360 +19 07 14.459719476   17.2   17.6   DA 21 0
33 GALEX J090231.7+183555 WD* 09 02 31.7549374104 +18 35 54.945533832   18.8   19.1   DA 8 0
34 GALEX J090610.8+143926 WD* 09 06 10.8700890648 +14 39 25.020349092           DA 10 0
35 GALEX J090700.1+183637 WD* 09 07 00.1937209008 +18 36 36.851904216           DA 5 0
36 GALEX J090953.7+191306 WD* 09 09 53.7626853744 +19 13 06.415513104           DA 11 0
37 2QZ J111230.1+003002 WD* 11 12 30.1360473600 +00 30 02.637786924           DA 18 0
38 SDSS J111629.75+060014.3 WD* 11 16 29.7509755152 +06 00 14.446522512           DA 12 0
39 GALEX J111816.4+040206 WD* 11 18 16.3978314216 +04 02 06.956771172           DA 17 0
40 GALEX J111844.4+043316 WD* 11 18 44.4180128328 +04 33 16.787798964           DA 8 0
41 SDSS J111946.60+060523.5 WD* 11 19 46.6027912056 +06 05 23.568735264           DA 13 0
42 GALEX J112221.1+035822 WD* 11 22 21.0990341784 +03 58 22.467525312           DA 25 0
43 GALEX J112304.5+070346 WD* 11 23 04.6522192920 +07 03 46.104312060           DA 16 0
44 GALEX J112519.6-030335 WD* 11 25 19.5882178848 -03 03 35.307310572           DA 8 0
45 GALEX J112619.9+033828 WD* 11 26 19.9034712912 +03 38 26.927737008           DA 9 0
46 SDSS J113139.82+053957.4 WD* 11 31 39.8213276088 +05 39 57.486137148           DA 14 0
47 2QZ J113614.8+005106 WD* 11 36 14.8931951832 +00 51 06.948106128           DA6 16 0
48 SDSS J113655.18+040952.6 WD* 11 36 55.1800730112 +04 09 52.730905968   16.79 17.12     DA+M 34 0
49 2QZ J113708.1-015924 WD* 11 37 08.1353681040 -01 59 23.636753124           DA 10 0
50 GALEX J114024.4+065409 WD* 11 40 24.4242160272 +06 54 09.076582152           DA 14 0
51 GALEX J114109.2+051036 WD* 11 41 09.2628590808 +05 10 35.024621772           DA 14 0
52 SDSS J114725.05+030211.5 WD* 11 47 25.0473471120 +03 02 11.464351728   18.2   18.9   DA5.5 12 0
53 LBQS 1145+0100 WD* 11 47 56.0073171840 +00 43 40.911057372           DA5 20 0
54 LBQS 1145+0145 WD* 11 48 33.6297189672 +01 28 59.420446860           DB 216 0
55 PG 1149+058 WD* 11 51 54.2067404280 +05 28 39.584467236   15.14   15.07   DA4.4 52 0
56 SDSS J115240.41+053343.7 WD* 11 52 40.4008021824 +05 33 43.725808080           DA 12 0
57 GALEX J115917.8-033521 WD* 11 59 17.8756738872 -03 35 21.488169732           DA 14 0
58 HE 1315-1105 WD* 13 17 47.2436645472 -11 21 06.028259904   15.8   15.6   DAZ 31 0
59 * m Vir PM* 13 41 36.7700844816 -08 42 10.729027692 8.59 6.64 5.01     M1+III 116 0
60 GALEX J134211.7-073539 WD* 13 42 11.6718075864 -07 35 38.518857024   16.9   16.5   DA 16 0
61 EC 14012-1446 WD* 14 03 57.1692959280 -15 01 10.577565696   15.86 15.67 15.89   DA4.1 63 0
62 LP 861-31 WD* 16 10 50.2152298944 -25 13 16.148672040     15.46 15.12 15.09 DA5.0 18 0
63 GD 358 WD* 16 47 18.3925183824 +32 28 32.862804384 12.511 13.530 13.653 13.752 13.852 DB2 364 0
64 GALEX J190835.8+431642 WD* 19 08 35.8930037160 +43 16 42.235023252 17.84         DA 13 0
65 GALEX J191340.9+470930 WD* 19 13 40.8876081048 +47 09 30.675488292 18.71         DA 10 0
66 SDSS J191643.83+393849.7 WD* 19 16 43.8197701440 +39 38 49.362598824 17.362 17.60 17.72 17.93 17.72 DA 29 0
67 SDSS J191719.16+392718.8 WD* 19 17 19.1726542032 +39 27 19.329494976 17.91         DA 13 0
68 PSO J290.1036+50.2894 WD* 19 20 24.8851862736 +50 17 21.048520956 17.701         DA 22 0
69 SDSS J222210.04-081208.9 WD* 22 22 10.0400396280 -08 12 08.933883228           DA 14 0
70 SDSS J223421.64-082848.3 WD* 22 34 21.6559256856 -08 28 48.315801324           DA 9 0
71 GD 1212 WD* 23 38 50.7400887024 -07 41 19.970752560   13.44 13.26   13.24 DA4.5 64 0

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