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Discovery of the spectroscopic binary nature of the Cepheids X Puppis and XX Sagittarii
László Szabados, Aliz Derekas, Csaba Kiss +1
We present the analysis of photometric and spectroscopic data of two bright Galactic Cepheids, X Puppis and XX Sagittarii. Based on the available data in the literature as well as…
Evidence for fresh frost layer on the bare nucleus of comet Hale--Bopp at 32 AU distance
Gy. M. Szabó, L. L. Kiss, A. Pál +4
Here we report that the activity of comet Hale--Bopp ceased between late 2007 and March, 2009, at about 28 AU distance from the Sun. At that time the comet resided at a distance fr…
"TNOs are Cool": A Survey of the Transneptunian Region IV. Size/albedo characterization of 15 scattered disk and detached objects observed with Herschel Space Observatory-PACS
P. Santos-Sanz, E. Lellouch, S. Fornasier +20
Physical characterization of Trans-Neptunian objects, a primitive population of the outer solar system, may provide constraints on their formation and evolution. The goal of this w…