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- European Southern ObservatoryCL534 papers
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23 papers · 2 filters
Implication of Formation Mechanisms of HC5N in TMC-1 as Studied by 13C Isotopic Fractionation
Kotomi Taniguchi, Hiroyuki Ozeki, Masao Saito +5
We observed the J = 9-8 and 16-15 rotational transitions of the normal species and five 13C isotopologues of HC5N to study its formation mechanisms toward the cyanopolyyne peak in…
Two-level hierarchical fragmentation in the Orion Molecular Cloud 1 northern filament
P. S. Teixeira, S. Takahashi, L. A. Zapata +1
[Abridged] We have recently reported on the collapse and fragmentation properties of the northernmost part of this structure, located ~2.4pc north of Orion KL -- the Orion Molecula…
A submillimeter search for pre- and proto-brown dwarfs in Chamaeleon II
I. de Gregorio-Monsalvo, D. Barrado, H. Bouy +7
Context. Chamaeleon II molecular cloud is an active star forming region that offers an excellent opportunity for studying the formation of brown dwarfs in the southern hemisphere.…
Episodic molecular outflow in the very young protostellar cluster Serpens South
Adele L. Plunkett, Hector G. Arce, Diego Mardones +5
The loss of mass from protostars, in the form of a jet or outflow, is a necessary counterpart to protostellar mass accretion. Outflow ejection events probably vary in their velocit…
From forced collapse to H ii region expansion in Mon R2: Envelope density structure and age determination with Herschel
P. Didelon, F. Motte, P. Tremblin +32
The surroundings of HII regions can have a profound influence on their development, morphology, and evolution. This paper explores the effect of the environment on H II regions in…
SOFIA/FORCAST Observations of Warm Dust in S106: A Fragmented Environment
J. D. Adams, T. L. Herter, J. L. Hora +22
We present mid-IR (19 - 37 microns) imaging observations of S106 from SOFIA/FORCAST, complemented with IR observations from Spitzer/IRAC (3.6 - 8.0 microns), IRTF/MIRLIN (11.3 and…