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6 papers · 2 filters
Detection of a high-mass prestellar core candidate in W43-MM1
T. Nony, F. Louvet, F. Motte +11
Aims. To constrain the physical processes that lead to the birth of high-mass stars it is mandatory to study the very first stages of their formation. We search for high-mass analo…
ALMA observations of the young protostellar system Barnard 1b: signatures of an incipient hot corino in B1b-S
N. Marcelino, M. Gerin, J. Cernicharo +8
The Barnard 1b core shows signatures of being at the earliest stages of low-mass star formation, with two extremely young and deeply embedded protostellar objects. Hence, this core…
Chemistry in disks. XI. Sulfur-bearing species as tracers of protoplanetary disk physics and chemistry: the DM Tau case
D. Semenov, C. Favre, D. Fedele +7
Context. Several sulfur-bearing molecules are observed in the interstellar medium and in comets, in strong contrast to protoplanetary disks where only CS, HCS and SO have been…
High-speed molecular cloudlets around the Galactic Center supermassive black hole
Javier R. Goicoechea, J. Pety, E. Chapillon +5
We present 1"-resolution ALMA observations of the circumnuclear disk (CND) and the environment around SgrA*. The images unveil the presence of small spatial scale CO (J=3-2) molecu…
The search for high-mass protostars with ALMA revealed up to kilo-parsec scales (SPARKS): I. Indication for a centrifugal barrier in the environment of a single high-mass envelope
T. Csengeri, S. Bontemps, F. Wyrowski +11
The formation of the most massive O-type stars is poorly understood. We present a case study of a young massive clump from the ATLASGAL survey, G328.2551-0.5321. It exhibits a bolo…
The unexpectedly large proportion of high-mass star-forming cores in a Galactic mini-starburst
F. Motte, T. Nony, F. Louvet +14
Understanding the processes that determine the stellar Initial Mass Function (IMF) is a critical unsolved problem, with profound implications for many areas of astrophysics. In mol…