Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Duerbeck, H. W."'
Publikováno v:
Astron.Astrophys. 395 (2002) 557-562
We present a spectroscopic study of the long-recurrence-time dwarf nova V592 Herculis based on observations obtained during its August 1998 superoutburst. From the analysis of the radial velocities of the Halpha emission line we find a most likely or
Externí odkaz:
http://arxiv.org/abs/astro-ph/0209038
Autor:
Duerbeck, H. W.
Publikováno v:
Astrophys.Space Sci. 279 (2002) 5-14
The optical photometric evolution of the final helium flash object V4334 Sgr from 1994 to 2000 is described. The rise to optical maximum (1994 - 1996) is characterized by a continuous increase of color indices, indicating a slowly expanding, cooling
Externí odkaz:
http://arxiv.org/abs/astro-ph/0102346
Publikováno v:
Astrophys.Space Sci. 279 (2002) 183-186
``Nova Aquilae No. 4'', discovered in 1919, later renamed V605 Aql, was recognized to be a final helium flash object only in the 1980s. Clayton and De Marco (1997) gave a detailed description of the available spectroscopic and photometric material. H
Externí odkaz:
http://arxiv.org/abs/astro-ph/0102347
Autor:
Pavlenko, Ya. V., Duerbeck, H. W.
Theoretical spectral energy distributions are computed for a grid of hydrogen-deficient and carbon-rich model atmospheres with a range in T(eff) of 4000 - 5500 K and log g of 1.0 - 0.0, using the technique of opacity sampling, and taking into account
Externí odkaz:
http://arxiv.org/abs/astro-ph/0101229
Autor:
Duerbeck, H. W., Liller, W., Sterken, C., Benetti, S., van Genderen, A. M., Arts, J., Kurk, J., Janson, M., Voskes, T., Brogt, E., Arentoft, T., van der Meer, A., Dijkstra, R.
CCD UBVRi photometry of the final helium flash object V4334 Sgr (Sakurai's Object), carried out during 1997 - 1999, is presented, and the light curve from its pre-discovery rise to the dust obscuration phase is constructed. The optical light curve ca
Externí odkaz:
http://arxiv.org/abs/astro-ph/0001534
Publikováno v:
Astron.Rep. 44 (2000) 209-218
Theoretical spectral energy distributions were computed for a grid of hydrogen-deficient and carbon-rich model atmospheres of T(eff) in the range of 5000-6250 K and log g = 1.0 - 0.0 by the technique of opacity sampling, taking into account continuou
Externí odkaz:
http://arxiv.org/abs/astro-ph/9912399
X-ray and optical-to-infrared follow-up observations of the transient X-ray burster SAX J1810.8-2609
Autor:
Greiner, J., Castro-Tirado, A. J., Boller, Th., Duerbeck, H. W., Covino, S., Israel, G. L., Linden-Vornle, M. J. D., Otazu-Porter, X.
We have performed a ROSAT follow-up observation of the X-ray transient SAX J1810.8-2609 on March 24, 1998 and detected a bright X-ray source (named RX J1810.7-2609) which was not detected during the ROSAT all-sky survey in September 1990. Optical-to-
Externí odkaz:
http://arxiv.org/abs/astro-ph/9907017
Autor:
Sanchez-Fernandez, C., Castro-Tirado, A. J., Duerbeck, H. W., Mantegazza, L., Beckmann, V., Burwitz, V., Vanzi, L., Bianchini, A., Della Valle, M., Piemonte, A., Dirsch, B., Hook, I., Yan, L., Gimenez, A.
We report here optical observations during the September/October 1998 outburst of the black hole candidate XTE J1550-564. CCD photometry was obtained for the optical counterpart with the 0.9m Dutch telescope at La Silla since the onset of this event.
Externí odkaz:
http://arxiv.org/abs/astro-ph/9906434
Autor:
DUERBECK, H. W., SEITTER, W. C.
Publikováno v:
Publications of the Astronomical Society of the Pacific, 1989 Jul 01. 101(641), 673-676.
Externí odkaz:
https://www.jstor.org/stable/40679378
Autor:
BECKER, H. J., DUERBECK, H. W.
Publikováno v:
Publications of the Astronomical Society of the Pacific, 1980 Dec 01. 92(550), 792-795.
Externí odkaz:
https://www.jstor.org/stable/40677690