scholarly journals [ITAL]Hubble Space Telescope[/ITAL] Observations of the Dwarf Nova WZ Sagittae: A Very Rapidly Rotating White Dwarf

1997 ◽  
Vol 484 (2) ◽  
pp. L149-L152 ◽  
Author(s):  
F. H. Cheng ◽  
Edward M. Sion ◽  
Paula Szkody ◽  
Min Huang
1996 ◽  
Vol 158 ◽  
pp. 249-250
Author(s):  
E. M. Sion ◽  
M. Huang ◽  
F. H. Cheng ◽  
I. Hubeny ◽  
P. Szkody

AbstractWe present a preliminary analysis of the UV spectrum of the dwarf nova VW Hyi during early quiescence, obtained with the Faint Object Spectrograph (FOS) on the Hubble Space Telescope (HST). The data were obtained approximately one day after the end of a normal outburst.


1995 ◽  
Vol 444 ◽  
pp. L97 ◽  
Author(s):  
Edward M. Sion ◽  
Paula Szkody ◽  
Fu-Hua Cheng ◽  
Min Huang

Author(s):  
Harry L. Shipman ◽  
Maurice Barnhill ◽  
Howard Bond ◽  
Fred Bruhweiler ◽  
David Finley ◽  
...  

2019 ◽  
Vol 488 (3) ◽  
pp. 3857-3865
Author(s):  
L R Bedin ◽  
M Salaris ◽  
J Anderson ◽  
M Libralato ◽  
D Apai ◽  
...  

ABSTRACT We report on the white dwarf (WD) cooling sequence of the old globular cluster NGC 6752, which is chemically complex and hosts a blue horizontal branch. This is one of the last globular cluster WD cooling sequences accessible to imaging by the Hubble Space Telescope. Our photometry and completeness tests show that we have reached the peak of the luminosity function of the WD cooling sequence, at a magnitude mF606W  = 29.4 ± 0.1, which is consistent with a formal age of ∼14 Gyr. This age is also consistent with the age from fits to the main-sequence turn-off (13–14 Gyr), reinforcing our conclusion that we observe the expected accumulation of WDs along the cooling sequence.


2019 ◽  
Vol 872 (1) ◽  
pp. 68
Author(s):  
Edward M. Sion ◽  
R. E. Wilson ◽  
Patrick Godon ◽  
Sumner Starrfield ◽  
Robert E. Williams ◽  
...  

1995 ◽  
Vol 443 ◽  
pp. 295 ◽  
Author(s):  
E. L. Robinson ◽  
Janet H. Wood ◽  
R. C. Bless ◽  
J. C. Clemens ◽  
J. F. Dolan ◽  
...  

1996 ◽  
Vol 465 (1) ◽  
pp. L23-L26 ◽  
Author(s):  
Alvio Renzini ◽  
Angela Bragaglia ◽  
Francesco R. Ferraro ◽  
Roberto Gilmozzi ◽  
Sergio Ortolani ◽  
...  

1996 ◽  
Vol 158 ◽  
pp. 247-248 ◽  
Author(s):  
M. Huang ◽  
E. M. Sion ◽  
I. Hubeny ◽  
F. H. Cheng ◽  
P. Szkody

AbstractWe have re-analyzed UV spectra of the dwarf nova VW Hyi during its quiescence, obtained with the Faint Object Spectrograph (FOS) on Hubble Space Telescope (HST), by considering the possible contribution from the accretion disk, which was not included in the previous analysis.


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