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8 papers · 2 filters
SiO J=5--4 in the HH211 Protostellar Jet Imaged with the SMA
Naomi Hirano, Sheng-Yuan Liu, Hsien Shang +5
We have mapped the SiO J=5-4 line at 217GHz from the HH211 molecular outflow with the Submillimeter Array (SMA). The high resolution map (1.6''x0.9'') shows that the SiO J=5-4 emis…
Exploring the Lower Mass Function in the young open Cluster IC 4665
W. J. de Wit, J. Bouvier, F. Palla +8
We present a study of the young (30-100Myr) open cluster IC 4665 with the aim to determine the shape of the mass function well into the brown dwarf regime. We photometrically selec…
X-ray Emission from Orion Nebula Cluster Stars with Circumstellar Disks and Jets
Joel H. Kastner, Geoffrey Franz, Nicolas Grosso +5
We investigate the X-ray and near-infrared emission properties of a sample of pre-main sequence (PMS) stellar systems in the Orion Nebula Cluster (ONC) that display evidence for ci…
Spectroscopic classification of red high proper motion objects in the Southern Sky
N. Lodieu, R. -D. Scholz, M. J. McCaughrean +3
We present the results of spectroscopic follow-up observations for a sample of 71 red objects with high proper motions in the range 0.08-1.14 arcsec/yr as detected using APM and SS…
X-ray emission from young brown dwarfs in the Orion Nebula Cluster
Thomas Preibisch, Mark J. McCaughrean, Nicolas Grosso +8
We use the sensitive X-ray data from the Chandra Orion Ultradeep Project (COUP) to study the X-ray properties of 34 spectroscopically-identified brown dwarfs with near-infrared spe…
COUP census of X-ray stars in BN-KL and OMC-1S
N. Grosso, E. D. Feigelson, K. V. Getman +11
We present a study of the X-ray sources detected in the vicinity of two density peaks in the Orion Molecular Cloud 1 (OMC-1) behind the Orion Nebula Cluster (ONC), as seen in the e…