566 citations
- Universität HamburgDE5 papers
- European Space Astronomy CentreES2 papers
- Keele UniversityGB2 papers
- Arizona State UniversityUS1 paper
- Astronomical Observatory of CapodimonteIT1 paper
- Australian National UniversityAU1 paper
- Center for Astrophysics Harvard & SmithsonianUS1 paper
- Christian-Albrechts-Universität zu KielDE1 paper
- Harvard University PressUS1 paper
- Heidelberg UniversityDE1 paper
- Hokkaido UniversityJP1 paper
- Joint Institute for Nuclear AstrophysicsUS1 paper
7 papers · 1 filter
The SSS phase of RS Ophiuchi observed with Chandra and XMM-Newton I.: Data and preliminary Modeling
J. -U. Ness, S. Starrfield, A. P. Beardmore +13
The phase of Super-Soft-Source (SSS) emission of the sixth recorded outburst of the recurrent nova RS Oph was observed twice with Chandra and once with XMM-Newton. The observations…
The baryon density at z=0.9-1.9 - Tracing the warm-hot intergalactic medium with broad Lyman alpha absorption
N. Prause, D. Reimers, C. Fechner +1
We present an analysis of the Lyman alpha forests of five quasar spectra in the near UV. Properties of the intergalactic medium (IGM) at an intermediate redshift interval (0.9 < z…
AGB and post-AGB stars
Dieter Engels
Intermediate mass stars (1-8 solar masses) evolve along the Asymptotic Giant Branch after completion of hydrogen and helium core burning. At the tip they lose for several ten to hu…
Two new ZZ Ceti pulsators from the HS and HE surveys
R. Silvotti, B. Voss, I. Bruni +4
We report the detection of nonradial g-mode oscillations in the DA white dwarfs HS1039+4112 (B=15.9) and HE1429-0343 (B=15.8) from time-series photometry made at the Loiano 1.5 m t…
Nucleosynthetic signatures of the first stars
Anna Frebel, Wako Aoki, Norbert Christlieb +16
The chemically most primitive stars provide constraints on the nature of the first stellar objects that formed in the Universe; elements other than hydrogen, helium and traces of l…
An infrared study of galactic OH/IR stars. I. An optical/near-IR atlas of the Arecibo sample
F. M. Jiménez-Esteban, L. Agudo-Mérida, D. Engels +1
In this paper we present optical and near-infrared finding charts, accurate astrometry (~1") and single-epoch near-infrared photometry for 371 IRAS sources, 96% of those included i…