Kepler Observations of White Dwarfs

Kepler Observations of White DwarfsKepler Observations of White Dwarfs

J. B. HolbergLunar and Planetary Laboratory, University of Arizona

With Special Thanks to Steve Howell – NOAOand

Matt Burleigh - Leicester

Kepler Mission

BOKS 53836

Comments on Kepler WD Data

Kepler Focal Plane

Kepler Band Pass

BOKS 53836: Burrell Optical Kepler Survey (BOKS) blue variable

Kepler Input Catalog (KIC): 9535405Position: α2000 = 19h 41m 31.34s δ2000 = +46˚ 0 10.8˝6̒ 6̒�

Proper Motion: μ = 0.045 arcsec/yr θ = 26.6⁰Photometry: g = 16.949 r = 17.412 i = 17.725 z = 18.061Kepler Mag: 17.409

Kepler Short Cadence (60 sec.) Integrations

FundamentalFundamental = 3.92994 cycles/day

Light Curve for Q1 Short Cadence Data

Period = 0.255730 days (6.1375 hrs.)

EUVE Light Curve for GD 394 - Dupuis et al. 2000

P = 1.15 d

WD 1953-011 - Brinkworth et al. (2005)

SWIFT UVOT (UVW2 – 1928 Ǻ)

SWIFT VOT UVW2 magnitudes

SWIFT XRT

Q3 LC Data KIC3354599 HSH 36 DA (v = 16.58)

Raw Data

‘Corrected’ Data

Q3 & Q4 LC Data KIC4829241 HSH 08 DA (v = 15.83)