Spectroscopic observations of this X-ray nova with the new 6.5-m MMT on Dec. 1 & 4 show that it contains a black hole primary of at least 6 solar masses. Our...

We have used a flux-calibrated mosaiced CCD image of M33 in Hα emission to produce a catalogue of the positions and Hα luminosities of 9190 HII regions complete...

We report the identification of a candidate optical counterpart of IGR J17480-2446 in Hubble Space Telescope (HST) archival observations, taken on 2003 Sept. 17...

The results of near-infrared mapping, optical spectroscopy, and millimetric CO J = 2-1 observations of the halo about IC 418 are presented. As a result, it is...

We propose and experimentally realize an algorithmic benchmark that demonstrates coherent control with a sequence of quantum operations that first generates and...

Large fullerenes and fullerene-based molecules have been proposed as carriers of diffuse interstellar bands (DIBs). The recent detection of the most common...

Distant clusters of galaxies provide a powerful method to study the formation and evolution of galaxies and large scale structure of the Universe. However, the...

The completeness of stellar spectral libraries across all evolutionary phases, parameter space and chemical abundances, is essential to build more sophisticated...

Planetary Nebulae (PNe) are highly representative of the lastest stages of intermediate mass stellar evolution. However, there are still many unresolved...