Hamburger Sternwarte - Research
Cataclysmic variables
Cataclysmic variables show strong intensity variations and prominent emission lines during quiescent phases. They are therefore easily recognized on objective prism plates. Follow up studies were made in collaboration with different groups. In 1999 we started a systematic survey of the CV population in the HQS.
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Template Spectra
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CV, B=18.0 |
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CV, B=16.0 |
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General
Gänsicke, B.T.; Araujo-Betancor, S., Rodriguez-Gil, P., Hagen, H.-J.; Engels, D (2003):
The cataclysmic variable population of the Hamburg Quasar Survey (a status report)
published in Calar Alto Newsletter No.6 (July 2003)
Gänsicke, B.T.; Hagen, H.-J.; Engels, D (2002):
Properties of a spectroscopically selected CV sample
Individual Objects
Aungwerojwit A.; Gänsicke B.T.; Rodriguez-Gil P.; Hagen H.-J.;
Araujo-Betancor S. ; Baernbantner O.; Engels D.; Fried R.E.; Harlaftis E.T.;
Mislis D.; Nogami D. Schmeer P.; Schwarz R.; Staude A.; Torres M.A.P. (2006) :
Dwarf novae in the Hamburg quasar survey: rarer than expected
Aungwerojwit A.; Gänsicke B.T.; Rodriguez-Gil P.; Hagen H.-J.; Harlaftis E.T.; Papadimitriou C.; Lehto H.; Araujo-Betancor S.; Heber U.; Fried R.E.; Engels D.; Katajainen S. (2005):
HS0139+0559, HS0229+8016, HS0506+7725 and HS0642+5049: Four new long-period cataclysmic variables
Aungwerojwit, A.; Gänsicke, B. T.; Rodriguez-Gil, P.; Hagen, H.-J.; Harlaftis, E.; Papadimitriou, C.; Lehto, H.; Fried, B.; Heber, U.; Engels, D.
(2005) :
Three new long-period CVs from the Hamburg Quasar Survey
Rodriguez-Gil P.; Gänsicke B.T.; Hagen H.-J.; Nogami D.; Torres
M.A.P.; Lehto H.; Aungwerojwit A.; Littlefair S.; Araujo-Betancor S.; Engels D. (2005):
HS 0943+1404, a true intermediate polar
Rodriguez-Gil, P, Gänsicke, B. T., Hagen, H.-J.; Marsh, T.J.; Harlaftis, E.T.; Kitsionas, S; Engels, D. (2005):
Detection of the white dwarf and the secondary star in the new SU UMa dwarf nova HS 2219+1824
Araujo-Betancor, S.; Gaensicke, B. T.; Hagen, H.-J.; Marsh, T.; Harlaftis, E.; Thorstensen, J.; Fried, R. E.; Schmeer P.; Engels, D. (2005):
HS2331+3905: The cataclysmic variable that has it all
Rodriguez-Gil, P; Gänsicke, B. T.; Barwig, H.; Hagen, H.-J.; Engels, D. (2004):
Time-resolved photometry and spectroscopy of the new deeply-eclipsing SW Sextantis star HS 0728+6738
Gänsicke, B.T.; Araujo-Betancor, S.; Hagen, H.-J.; Harlaftis, E. T.; Kitsionas, S.; Dreizler, S.; Engels, D. (2004):
HS 2237+8154: A new pre-CV just above the period gap?
Araujo-Betancor, S.; Gaensicke, B. T.; Hagen, H.-J.; Marsh, T.; Thorstensen, J.; Harlaftis, E.; Fried, R. E.; Engels, D. (2004):
The mysterious nature of HS2331+3905
Gänsicke, B.T.; Araujo-Betancor, S.; Hagen, H.-J.; Harlaftis, E. T.; Kitsionas, S.; Dreizler, S.; Engels, D. (2004):
HS 2237+8154: On the onset of mass transfer or entering the period gap?
Araujo-Betancor, S.; Gänsicke, B.T.; Hagen, H.-J.; Rodriguez-Gil, P.; Engels, D. (2003):
1RXS J062518.2+733433: A new intermediate polar
Gänsicke, B.T.; Hagen, H.-J.; Kube, J.; Schwarz, R.; Staude, A.; Engels, D.; Nogami, D.; Kuduz, M. (2002)
HS 0455+8315: A new eclipsing novalike variable
Nogami, D.; Engels, D.; Gänsicke, B.T.; Pavlenko, E.P.; Novak, R.; Reinsch, K. (2000):
A newly discovered SU UMa-type dwarf nova, HS 1449+6415
Jiang, X.J.; Engels, D.; Wei, J.Y.; Tesch, F.; Hu, J.Y. (2000):
New cataclysmic variables from the RASS
Gänsicke, B.T.; Fried, R.E.; Hagen, H.-J.; Beuermann, K.; Engels, D.; Hessman, F.V.; Nogami, D.; Reinsch, K. (2000):
HS 0907+1902: a new 4.2 hr dwarf nova
Reimers, D.; Hagen, H.-J. (2000):
HS0922+1333: another low accretion rate polar with a pronounced cyclotron line spectrum
Reimers, D.; Hagen, H.-J.; Hopp, U. (1999):
HS 1023+3900 - a magnetic CV in the period gap with a distinct cyclotron emission line spectrum
Dobrzycka, D.; Dobrzycki, A.; Engels, D.; Hagen, H.-J. (1998):
HS 0551+7241: A Magnetic Catalysmic Variable in the Hamburg/CFA Bright Quasar Survey
Collaborators:
B.T. Gänsicke (Warwick),
H.-J. Hagen,
D. Engels,
D. Reimers
For more information please contact: H.-J. Hagen
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Monday, 02-Oct-2006 14:54:53 CEST | A. Mertz, D. Engels
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