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34 papers · 2 filters
Water in Star-Forming Regions with the Herschel Space Observatory (WISH): Overview of key program and first results
E. F. van Dishoeck, L. E. Kristensen, A. O. Benz +12
`Water In Star-forming regions with Herschel' (WISH) is a key program on the Herschel Space Observatory designed to probe the physical and chemical structure of young stellar objec…
Accurate dynamical mass determination of a classical Cepheid in an eclipsing binary system
G. Pietrzynski, I. B. Thompson, W. Gieren +5
Stellar pulsation theory provides a means of determining the masses of pulsating classical Cepheid supergiant - it is the pulsation that causes their luminosity to vary. Such pulsa…
Old open clusters and the Galactic metallicity gradient: Berkeley 20, Berkeley 66, and Tombaugh 2
Gloria Andreuzzi, Angela Bragaglia, Monica Tosi +1
To study the crucial range of Galactocentric distances between 12 and 16 kpc, where little information is available, we have obtained VI CCD imaging of Berkeley 20 and BVI CCD imag…
Heavy water around the L1448-mm protostar
C. Codella, C. Ceccarelli, B. Nisini +5
Context: L1448-mm is the prototype of a low-mass Class 0 protostar driving a high-velocity jet. Given its bright H2O spectra observed with ISO, L1448-mm is an ideal laboratory to o…
zCOSMOS 10k-bright spectroscopic sample: exploring mass and environment dependence in early-type galaxies
M. Moresco, L. Pozzetti, A. Cimatti +58
We present the analysis of the U-V rest-frame color distribution and some spectral features as a function of mass and environment for two sample of early-type galaxies up to z=1 ex…
Nitrogen hydrides in the cold envelope of IRAS16293-2422
Pierre Hily-Blant, Sébastien Maret, Aurore Bacmann +4
Nitrogen is the fifth most abundant element in the Universe, yet the gas-phase chemistry of N-bearing species remains poorly understood. Nitrogen hydrides are key molecules of nitr…