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17 papers · 2 filters
Evolution of Hubble wedges in episodic protostellar outflows
P. F. Rohde, S. Walch, D. Seifried +2
Young low-mass protostars undergo short phases of high accretion and outburst activity leading to lumpy outflows. Recent observations have shown that the position-velocity and mass…
Deuterated methyl mercaptan (CHSD): Laboratory rotational spectroscopy and search toward IRAS 16293-2422 B
Olena Zakharenko, Frank Lewen, Vadim V. Ilyushin +4
Methyl mercaptan (also known as methanethiol), CH3SH, has been found in the warm and dense parts of high -- as well as low -- mass star-forming regions. The aim of the present stud…
Laboratory spectroscopic study of isotopic thioformaldehyde, HCS, and determination of its equilibrium structure
H. S. P. Müller, A. Maeda, S. Thorwirth +6
Thioformaldehyde is an abundant molecule in various regions of the interstellar medium. However, available laboratory data limit the accuracies of calculated transition frequencies…
The ALMA-PILS survey: The first detection of doubly-deuterated methyl formate (CHD2OCHO) in the ISM
S. Manigand, H. Calcutt, J. K. Jørgensen +9
Studies of deuterated isotopologues of complex organic molecules can provide important constraints on their origin in regions of star formation. In particular, the abundances of de…
NU Ori: a hierarchical triple system with a strongly magnetic B-type star
M. Shultz, J. -B. Le Bouquin, Th. Rivinius +13
NU Ori is a massive spectroscopic and visual binary in the Orion Nebula Cluster, with 4 components: Aa, Ab, B, and C. The B0.5 primary (Aa) is one of the most massive B-type stars…
Chasing discs around O-type (proto)stars - ALMA evidence for an SiO disc and disc wind from G17.64+0.16
L. T. Maud, R. Cesaroni, M. S. N. Kumar +28
We present high angular resolution 0.2 arcsec continuum and molecular emission line Atacama Large Millimeter/sub-millimeter Array (ALMA) observations of G17.64+0.16 in Band 6 (220G…