منابع مشابه
The Orion Nebula in the mid - Ir
We present two wide-field (≈ 5 × 3.5), diffraction limited (λ/D ≃ 0.5 at 10 μm), broad-band 10 μm and 20 μm images of the Orion Nebula, plus six 7–13 μm narrow-band (λ/∆λ ≃ 1) images of the BN/KL complex taken at the 3.8m UKIRT telescope with the MPIA MAX camera. The wide field images, centered on the Trapezium and BN/KL regions, are mosaics of 35 × 35 frames obtained with standard chopping and...
متن کاملThe Orion Nebula in the Mid-infrared
Q1 We present two wide-field ( 50 ; 3A5), diffraction-limited (k=D ’ 0B5 at 10 m), broadband 10 and 20 m images of the Orion Nebula, plus six 7–13 m narrowband (k= k ’ 1) images of the BN/KL complex taken at the 3.8 m UKIRT Q2 telescope with the MPIA MAX camera. The wide-field images, centered on the Trapezium and BN/KL regions, are mosaics of 3500 ; 3500 frames obtained with standard chopping ...
متن کاملWide binaries in the Orion Nebula Cluster
Using proper motion data for 894 stars in the Orion Nebula Cluster (ONC) compiled by Jones & Walker in 1988, we search for binaries with apparent separations in the range 1000–5000 AU, and find an upper limit of three. Using a Monte Carlo method, we test the consistency of this result with two hypotheses: i) that the cluster contains a binary population identical to that found in the solar neig...
متن کاملPre-Orion Cores in the Trifid Nebula
The Trifid nebula is a young HII region undergoing a burst of star formation. In this article, we report on far-infrared and millimeter continuum and line observations of several massive and bright protostellar sources in the vicinity of the exciting star of the nebula, just behind the ionization front. These objects are probably young protostars (Class 0) and are associated with very massive c...
متن کاملRotation in the Orion Nebula Cluster
Eighteen small (4 arc-min square) fields within the Orion Nebula Cluster (ONC) have been photometrically monitored for one or more observing seasons between 1990 and 1999 with a CCD attached to the 0.6 m telescope at Van Vleck Observatory on the campus of Wesleyan University. Data were obtained exclusively in the Cousins I band on between 25 and 40 nights per season. Results from the first thre...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1980
ISSN: 0074-1809
DOI: 10.1017/s0074180900072090