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Inferring coronal structure from X-ray lightcurves and Doppler shifts: a Chandra study of AB Doradus
G. A. J. Hussain, N. S. Brickhouse, A. K. Dupree +6
The Chandra X-ray observatory monitored the single cool star, AB Doradus, continuously for a period lasting 88 ksec (1.98 Prot) in 2002 December with the LETG/HRC-S. The X-ray ligh…
Opacity Variations in the Ionized Absorption in NGC 3783: A Compact Absorber
Y. Krongold, F. Nicastro, N. S. Brickhouse +2
We show that the Fe (VII-XII) M-shell unresolved transition array (UTA) in the NGC 3783 900 ks Chandra HETGS observation clearly changes in opacity in a timescale of 31 days respon…
Inferring coronal structure using X-ray spectra: A Chandra study of AB Dor
G. A. J. Hussain, N. S. Brickhouse, A. K. Dupree +5
The Chandra X-ray observatory monitored the single cool star, AB Doradus, continuously for a period lasting 88ksec (1.98 Prot) in 2002 December with the LETG/HRC-S. The X-ray light…
The Ionized Nuclear Environment in NGC 985 as seen by Chandra and BeppoSAX
Y. Krongold, F. Nicastro, M. Elvis +3
(Abridged) We investigate the ionized environment of the Seyfert 1 galaxy NGC 985 with a new Chandra-HETGS observation and an archival BeppoSAX observation. Two absorption componen…
The Radial Velocity and Mass of the White Dwarf of EX Hydrae Measured with Chandra
R. Hoogerwerf, N. S. Brickhouse, C. W. Mauche
We present the first detection of orbital motion in the cataclysmic variable EX Hydrae based on X-ray data from the Chandra X-ray Observatory. The large collecting area of the tele…