Evidence for a 20pc Disk at the Nucleus of Centaurus A
We report Hubble Space Telescope NICMOS observations of the central region of NGC 5128 at 2.2 mu m and in Pa alpha . The continuum images show extended emission...
Evidence for a black hole in the historical X-ray transient A 1524-61 (= KY TrA)
We present Very Large Telescope spectroscopy, high-resolution imaging, and time-resolved photometry of KY TrA, the optical counterpart to the X-ray binary A...
Evidence for a black hole in the X-ray transient XTE J1859+226
We present the results of time-resolved optical photometry and spectroscopy of the X-ray transient XTE J1859+226 (V406 Vul). Photometric observations taken...
Evidence for a compact jet dominating the broad-band spectrum of the black hole accretor XTE J1550-564
The black hole X-ray binary XTE J1550-564 was monitored extensively at X-ray, optical and infrared wavelengths throughout its outburst in 2000. We show that it...
Evidence for a fundamental stellar upper mass limit from clustered star formation
The observed masses of the most massive stars do not surpass about 150 Msolar. This may either be a fundamental upper mass limit which is defined by the physics...
Evidence for a high-z ISW signal from supervoids in the distribution of eBOSS quasars
The late-time integrated Sachs-Wolfe (ISW) imprint of $R\gtrsim 100~h^{-1}\, \mathrm{Mpc}$ superstructures is sourced by evolving large-scale potentials due to...