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Institut für Astronomie und Astrophysik

Abteilung Astronomie

Sand 1, D-72076 Tübingen, Germany
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Preprints 1998


Preprint 13/98, Dec 1998
Klaus Werner and Stefan Dreizler
The Classical Stellar Atmosphere Problem
1999, Computational Astrophysics, The Journal of Computational and Applied Mathematics, eds. H. Riffert, K. Werner, in press

Preprint M/98, Nov 1998
MICHAEL A. NOWAK, JÖRN WILMS, JAMES B. DOVE
LOW LUMINOSITY STATES OF THE BLACK HOLE CANDIDATE GX 339-4. II. TIMING ANALYSIS
1999, ApJ, 517, 355-366

Preprint 12/98, Nov 1998
B. Stelzer, J. Wilms, R. Staubert, D. Gruber, and R. Rothschild
Evolution of spectral parameters during a pre­eclipse dip of Her X­1
1999, Astronomy & Astrophysics, in press

Preprint 11/98, Nov 1998
R. Staubert, J. Wilms, K. Pottschmidt
NEW INSIGHT INTO AGN BY COMBINING SPECTRAL AND TIMING INFORMATION
1999, 3rd Integral Symposium - The Extreme Universe, in press

Katja Pottschmidt, Jörn Wilms, Michael A. Nowak, James B. Dove, Mitchell C. Begelman, Rüdiger Staubert
Modeling Spectral and Temporal Properties of Cygnus X­1
1999, 3rd Integral Symposium - The Extreme Universe, in press

M. Kuster, J. Wilms, S. Blum, R. Staubert, D. Gruber, R. Rothschild, W. Heindl
Complete Coverage of an X­Ray Turn­On of Her X­1 by RXTE
1999, 3rd Integral Symposium - The Extreme Universe, in press

D.E. Gruber, W.A. Heindl, R.E. Rothschild, R. Staubert, J. Wilms, D.M.Scott
STABILITY OF CYCLOTRON LINE IN HER X­1
1999, 3rd Integral Symposium - The Extreme Universe, in press

J. Wilms, M.A. Nowak, J.B. Dove, K. Pottschmidt, W.A. Heindl, M.C. Begelman, R. Staubert
LMC X­1 AND LMC X­3 AS SEEN BY RXTE
1999, 3rd Integral Symposium - The Extreme Universe, in press

P. Kretschmar, J. Wilms, R. Staubert, E. Kendziorra, I. Kreykenbohm, D. Gruber, W. Heindl, R. Rothschild
NEW OBSERVATIONS OF THE VELA X­1 CYCLOTRON LINES WITH RXTE ­ PRELIMINARY RESULTS
1999, 3rd Integral Symposium - The Extreme Universe, in press

Preprint 09/98, Nov 1998
Rauch, T.
Narrow-band imaging and a search for planetary nebulae
1999, Astronomy & Astrophysics Suppl. Ser., accepted

Preprint L/98, Oct 1998
Nowak, M.A., Wilms, J., Vaughan, B.A., Dove, J.B. and Begelman, M.C.
RXTE Observation of Cygnus X-1: III. Implications for Compton Corona and ADAF Models
1999, Astrophysical Journal, accepted

Preprint 08/98, Oct 1998
Kreykenbohm, I., Kretschmar, P., Wilms, J., Staubert, R., Kendziorra, E., Gruber, D.E., Heindl, W.A. and Rothschild, R.E.
Vela X-1 as seen by RXTE
1999, Astronomy & Astrophysics, accepted

Preprint K/98, Oct 1998
Pottschmidt, K., Wilms, J., Nowak, M.A., Dove, J.B., Begelman, M.C. and Staubert, R.
RXTE Observations of Cygnus X-1 - Broad-Band Spectra and High-Resolution Timing
1999, Highlights in X-ray Astronomy, ed. B. Aschenbach, MPE Report, in press

Wilms, J., Dove, J.B., Nowak, M.A. and Begelman, M.C.
Accretion Disk Coronae
1999, Highlights in X-ray Astronomy, ed. B. Aschenbach, MPE Report, in press

Wilms, J., Nowak, M.A., Dove, J.B., Pottschmidt, K., Heindl, W.A., Begelman, M.C. and Staubert, R.
RXTE Observations of LMC X-1 and LMC X-3
1999, Highlights in X-ray Astronomy, ed. B. Aschenbach, MPE Report, in press

Rother, F. and Staubert, R.
Principal components analysis of a sample of radio-loud AGN - radio, optical and X-ray properties
1999, Highlights in X-ray Astronomy, ed. B. Aschenbach, MPE Report, in press

Kretschmar, P., Kreykenbohm, I., Wilms, J., Staubert, R., Kendziorra, E., Gruber, D.E., Heindl, W.A. and Rothschild, R.E.
Cyclotron lines in RXTE spectra of Vela X-1
1999, Highlights in X-ray Astronomy, ed. B. Aschenbach, MPE Report, in press

Gruber, D.E., Heindl, W.A., Rothschild, R.E., Staubert, R., Wilms, J. and Scott, D.M.
On the Stability of the Cyclotron Line of Her X-1
1999, Highlights in X-ray Astronomy, ed. B. Aschenbach, MPE Report, in press

B. Stelzer , J. Wilms , R. Staubert , D. E. Gruber , and R. E. Rothschild
Her X-1: Spectral parameters during a pre-eclipse dip
1999, Highlights in X-ray Astronomy, ed. B. Aschenbach, MPE Report, in press

Preprint 07/98, Sep 1998
Werner, K., Dreizler, S., Rauch, T., Barnstedt, J., Gölz, M., Gringel, W., Kappelmann, N., Krämer, G., Widmann, H., Koesterke, L., Haas, S., Heber, U., Appenzeller, I., Grewing, M.
FUV spectroscopy of DO and PG 1159 stars with ORFEUS
1999, Proc. 11th European Workshop on White Dwarfs, (J.-E.Solheim, E.G. Meistas, eds.), ASP Conference Series 169, 511-517

Deetjen, J.L., Dreizler, S., Rauch, T. and Werner, K.
Iron and nickel abundances in hot hydrogen-rich central stars of planetary nebulae
1999, Proc. 11th European Workshop on White Dwarfs, (J.-E.Solheim, E.G. Meistas, eds.), ASP Conference Series 169, 475-478

Preprint J/98, Sep 1998
Barnstedt, J., Kappelmann, N., Appenzeller, I., Fromm, A., Gölz, M., Grewing, M., Gringel, W., Haas, C., Hopfensitz, W., Krämer, G., Krautter, J., Lindenberger, A., Mandel, H., Widmann, H.
The ORFEUS II Echelle Spectrometer: Instrument Description, Performance and Data Reduction
1999, Astronomy & Astrophysics Suppl. Ser., 134, 561-568

Preprint H/98, Sep 1998
Werner, K., Dreizler, S., Rauch, T., Koesterke, L. and Heber, U.
Born-again AGB stars: Starting point of the H-deficient post-AGB evolutionary sequence?
1999, Proc. IAU Symposium 191: Asymptotic Giant Branch Stars, eds. T. Le Bertre, A. Lebre, C. Waelkens, The ASP Conference Series, in press

Preprint G/98, Aug 1998
Richter, P., Widmann, H., de Boer, K.S., Appenzeller, I., Barnstedt, J., Gölz, M., Grewing, M., Gringel, W., Kappelmann, N., Krämer, G., Mandel, H. and Werner, K.
ORFEUS II echelle spectra: detection of H_2 absorption in SMC gas
1998, Astronomy & Astrophysics, 338, L9

Preprint F/98, Aug 1998
Widmann, H., de Boer, K.S., Richter, P., Krämer, G., Appenzeller, I., Barnstedt, J., Gölz, M., Grewing, M., Gringel, W., Mandel, H. and Werner, K.
ORFEUS II echelle spectra: The scale height of interstellar O VI in the halo
1998, Astronomy & Astrophysics, 338, L1

Preprint 06/98, Aug 1998
Rauch, T., Dreizler, S. and Wolff, B.
Spectral analysis of O(He)-type post-AGB stars
1998, Astronomy & Astrophysics, accepted

Preprint E/98, Jul 1998
Nowak, M.A., Vaughan, B.A., Wilms, J., Dove, J.B. and Begelman, M.C
RXTE Observation of Cygnus X-1: II. Timing Analysis
1999, Astrophysical Journal, 510, 874-891

Preprint D/98, Mar 1998
Paunzen, E., König, M. and Dreizler, S.
On the inclination and binarity of the pulsating pre-white dwarf PG 2131+066
1998, Astronomy & Astrophysics, 331, 162

Preprint C/98, Feb 1998
Dove, J.B., Wilms, J., Nowak, M.A., Vaughan, B.A. and Begelman, M.C.
RXTE Observation of Cygnus X-1: I. Spectral Analysis
1998, Mon. Not. R. Astron. Soc., 298, 729

Preprint 05/98, Feb 1998
Pottschmidt, K., König, M., Wilms, J. and Staubert, R.
Analyzing short-term X-ray variability of Cygnus X-1 with Linear State Space Models
1998, Astronomy & Astrophysics, 334, 201

Preprint 04/98, Feb 1998
Dreizler, S. and Heber, U.
Spectral analyses of PG 1159 stars: Constraints on the GW Vir pulsations from HST observations
1998, Astronomy & Astrophysics, 334, 618

Preprint B/98, Feb 1998
Kruk, J.W. and Werner, K.
FUV Spectroscopy of PG 1159 Stars with the Hopkins Ultraviolet Telescope
1998, Astrophysical Journal, 502, 858

Preprint 03/98, Feb 1998
Werner, K.
Stellar Atmospheres
in Proceedings of the 2nd Oak Ridge Symposium on Atomic & Nuclear Astrophysics, Oak Ridge, TN, USA, 2.-6.12.97

Rauch, T.
Improved NLTE Model Atmospheres for the Analysis of Hot Compact Stars
in Proceedings of the 2nd Oak Ridge Symposium on Atomic & Nuclear Astrophysics, Oak Ridge, TN, USA, 2.-6.12.97

Preprint A/98, Jan 1998
Koesterke, L. and Werner, K.
Determination of mass-loss rates of PG 1159 stars from FUV spectroscopy
1998, Astrophysical Journal, 500, 55

Preprint 02/98, Jan 1998
Werner, K., Dreizler, S., Haas, S. and Heber, U.
Iron and Nickel abundances in DA white dwarfs and sdO stars
in Ultraviolet Astrophysics Beyond the IUE Final Archive, November 11-14, 1997, Sevilla, Spain, (Eds. R.González-Riestra, W. Wamsteker, R.A. Harris), ESA Publication Division, ESA-SP 413

Rauch, T.
Analysis of IUE spectra of hot compact stars with NLTE model atmospheres
in Ultraviolet Astrophysics Beyond the IUE Final Archive, November 11-14, 1997, Sevilla, Spain, (Eds. R.González-Riestra, W. Wamsteker, R.A. Harris), ESA Publication Division, ESA-SP 413

Preprint 01/98, Jan 1998
Lamer, G. and Wagner, S.
Markarian 501 in X-ray bright state - RXTE observations
1998, Astronomy & Astrophysics, 331, L13

See older preprints (1997).


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