Zobrazeno 1 - 10
of 1 295
pro vyhledávání: '"Fried R"'
Autor:
Boyd, D. R. S., de Miguel, E., Patterson, J., Wood, M. A., Barrett, D., Boardman, J., Brettman, O., Cejudo, D., Collins, D., Cook, L. M., Cook, M. J., Foote, J. L., Fried, R., Gomez, T. L., Hambsch, F. -J., Jones, J. L., Kemp, J., Koff, R., Koppelman, M., Krajci, T., Lemay, D., Martin, B., McClusky, J. V., Menzies, K., Messier, D., Roberts, G., Robertson, J., Rock, J., Sabo, R., Skillman, D., Ulowetz, J., Vanmunster, T.
We present an analysis of photometric observations of the eclipsing novalike variable DW UMa made by the CBA consortium between 1999 and 2015. Analysis of 372 new and 260 previously published eclipse timings reveals a 13.6 year period or quasi-period
Externí odkaz:
http://arxiv.org/abs/1612.06883
Autor:
Aungwerojwit, A., Gaensicke, 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.
We report the discovery of five new dwarf novae from the Hamburg Quasar Survey (HQS), and discuss the properties of the sample of dwarf novae in the HQS. The orbital periods of the new dwarf novae are ~105.1 min or ~109.9 min, 114.3+-2.7 min, 92.66+-
Externí odkaz:
http://arxiv.org/abs/astro-ph/0605588
Autor:
Aungwerojwit, A., Gaensicke, 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.
We present time-resolved optical spectroscopy and photometry of four relatively bright (V~14.0-15.5) long-period cataclysmic variables (CVs) discovered in the Hamburg Quasar Survey: HS0139+0559, HS0229+8016, HS0506+7725 and HS0642+5049. Their respect
Externí odkaz:
http://arxiv.org/abs/astro-ph/0507342
Autor:
Belle, K. E., Howell, S. B., Mukai, K., Szkody, P., Nishikida, K., Ciardi, D. R., Fried, R. E., Oliver, J. P.
The intermediate polar, EX Hydrae, was the object of a large simultaneous multiwavelength observational campaign during 2000 May - June. Here we present the Rossi X-ray Timing Explorer photometry and optical photometry and spectroscopy from ground-ba
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501087
Publikováno v:
In Journal of Hydrology January 2018 556:557-571
Autor:
Araujo-Betancor, S., Gaensicke, B. T., Hagen, H. -J., Marsh, T. R., Harlaftis, E. T., Thorstensen, J., Fried, R. E., Schmeer, P., Engels, D.
Publikováno v:
Astron.Astrophys. 430 (2005) 629
We report detailed follow-up observations of the cataclysmic variable HS2331+3905, identified as an emission-line object in the Hamburg Quasar Survey. An orbital period of 81.08min is unambiguously determined from the detection of eclipses in the lig
Externí odkaz:
http://arxiv.org/abs/astro-ph/0410223
Autor:
Araujo-Betancor, S., Gaensicke, B. T., Hagen, H. -J., Marsh, T., Thorstensen, J., Harlaftis, E., Fried, R. E., Engels, D.
We report the discovery of one unique cataclysmic variable drawn from the Hamburg Quasar Survey, HS2331+3905. Follow-up observations obtained over three years unveiled a very unusual picture. The large amplitude 3.5 h radial velocity variations obtai
Externí odkaz:
http://arxiv.org/abs/astro-ph/0402270
Autor:
Patterson, J., Thorstensen, J., Kemp, J., Skillman, D., Vanmunster, T., Harvey, D., Fried, R., Jensen, L., Cook, L., Rea, R., Monard, B., McCormick, J., Velthuis, F., Walker, S., Martin, B., Bolt, G., Pavlenko, E., O'Donoghue, D., Gunn, J., Novak, R., Masi, G., Garradd, G., Butterworth, N., Krajci, T., Foote, J., Beshore, E.
We report precise measures of the orbital and superhump period in twenty more dwarf novae. For ten stars, we report new and confirmed spectroscopic periods - signifying the orbital period P_o - as well as the superhump period P_sh. These are GX Cas,
Externí odkaz:
http://arxiv.org/abs/astro-ph/0309100
Autor:
Tovmassian, G., Zharikov, S., Michel, R., Neustroev, ; V., Greiner, J., Skillman, D., Harvey, D., Fried, R., Patterson, J.
FS Aur is a known dwarf nova with an orbital period of about 85.7 minutes. It has been assumed to be a member of the SU UMa subclass of cataclysmic variables (CVs), but previous searches for superhumps and superoutburst have been unsuccessful. We con
Externí odkaz:
http://arxiv.org/abs/astro-ph/0302562
Autor:
Mouchet, M., Bonnet-Bidaud, J. M., Roueff, E., Beuermann, K., De Martino, D., Desert, J. M., Ferlet, R., Fried, R. E., Gaensicke, B. T., Howell, S. B., Mukai, K., Porquet, D., Szkody, P.
Publikováno v:
Astron.Astrophys.401:1071-1076,2003
We report on the first far-UV observations of the asynchronous polar BY Cam made by the Far-Ultraviolet Spectroscopic Explorer (FUSE). The source is known to exhibit the most extreme NV/CIV emission resonance line ratio observed among polars. The FUS
Externí odkaz:
http://arxiv.org/abs/astro-ph/0302312