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4 papers · 2 filters
The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars
A. Sota, J. Maíz Apellániz, N. I. Morrell +5
We present the second installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R ~ 2500 digital observations…
Anchors for the Cosmic Distance Scale: the Cepheids U Sgr, CF Cas and CEab Cas
D. Majaess, G. Carraro, C. Moni Bidin +11
New and existing X-ray, UBVJHKsW(1-4), and spectroscopic observations were analyzed to constrain fundamental parameters for M25, NGC 7790, and dust along their sight-lines. The sta…
First results from a study of DIBs with thousands of high-quality massive-star spectra
J. Maíz Apellániz, A. Sota, R. H. Barbá +4
We are using five different surveys to compile the largest sample of diffuse interstellar band (DIB) measurements ever collected. GOSSS is obtaining intermediate-resolution blue-vi…
Characterization of the Nearby L/T Binary Brown Dwarf WISE J104915.57-531906.1 at 2 Parsecs from the Sun
A. Y. Kniazev, P. Vaisanen, K. Muzic +22
WISE J104915.57531906.1 is a L/T brown dwarf binary located 2pc from the Sun. The pair contains the closest known brown dwarfs and is the third closest known system, stellar or…