White Dwarfs

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WDs standard candle working group

• Members

Vadim Burwitz (chair, ROSAT, Chandra, XMM)
Frank Haberl (ROSAT, XMM)
Jelle Kaastra (Chandra, Modeling)
Herman Marshall (Chandra)
Norbert Schulz (Chandra)
Jeremy Drake (Chandra)

• Objects

HZ 43, Sirius B, GD 153

• Missions

EUVE, ROSAT, Chandra, XMM-Newton

• Data

Chandra
   HZ 43
       
   Sirius B 
          
   GD 153  
      -- 110ks LETG accepted for observation Cycle 11 

• Results

see papers

• Papers

[1] Beuermann, K., Burwitz, V., Rauch, T. 2006: Establishing HZ43 A, Sirius B, and RX J185635-3754 as soft X-ray standards: a cross-calibration between the Chandra LETG+HRC-S, the EUVE spectrometer, and the ROSAT PSPC, A&A 458,541

[2] Kaastra, J. S., Lanz, T., Hubeny, I., Paerels, F. 2008: Establishing HZ43 A, Sirius B, and RX J185635-3754 as soft X-ray standards: a cross-calibration between the Chandra LETG+HRC-S, the EUVE spectrometer, and the ROSAT PSPC, HEAD 10.0406

[3] Rauch, T. 2008, Uncertainties in (E)UV model atmosphere fluxes, A&A 481, 807

[4] Kaastra, J. S., Lanz, T.. Hubeny, I.. Paerels, F. B. S. 2009, Effective area calibration of the reflection grating spectrometers of XMM-Newton. II. X-ray spectroscopy of DA white dwarfs, A&A 497, 311