216 citations · 1.4k across the 39 of their papers we have counts for
15 papers · 1 filter
Discovery of a strong Baldwin effect in mid-infrared AGN lines
S. F. Hoenig, A. Smette, T. Beckert +5
We present the discovery of a Baldwin effect in 8 nearby Seyfert galaxies for the three most prominent mid-infrared forbidden emission lines observable from the ground that are com…
First astrophysical results from AMBER/VLTI
Fabien Malbet, Romain G. Petrov, Gerd Weigelt +5
The AMBER instrument installed at the Very Large Telescope (VLT) combines three beams from as many telescopes to produce spectrally dispersed fringes from milli-arcsecond angular s…
Outflows from the high-mass protostars NGC 7538 IRS1/2 observed with bispectrum speckle interferometry -- Signatures of flow precession
S. Kraus, Y. Balega, M. Elitzur +6
NGC 7538 IRS1 is a high-mass (approx. 30 M_sun) protostar with a CO outflow, an associated UCHII region, and a linear methanol maser structure, which might trace a Keplerian-rotati…
First AMBER/VLTI observations of hot massive stars
R. G. Petrov, F. Millour, O. Chesneau +45
AMBER is the first near infrared focal instrument of the VLTI. It combines three telescopes and produces spectrally resolved interferometric measures. This paper discusses some pre…
UBVJHKLM photometry and modeling of R Coronae Borealis
B. F. Yudin, J. D. Fernie, N. R. Ikhsanov +2
We present the results of UBVJHKLM photometry of R CrB spanning the period from 1976 to 2001. Studies of the optical light curve have shown no evidence of any stable harmonics in t…
Spectral Observations of Stars in Late Stages of Stellar Evolution
T. Bloecker, K. -H. Hofmann, G. Weigelt
Interferometric observations of stars in late stages of stellar evolution and the impact of VLTI observations are discussed. Special attention is paid to the spectral information t…