منابع مشابه
A deep VLA survey at 6 cm in the Lockman Hole
We have obtained a deep radio image with the Very Large Array at 6 cm in the Lockman Hole. The noise level in the central part of the field is ∼11 μJy. From these data we have extracted a catalogue of 63 radio sources with a maximum distance of 10 arcmin from the field center and with peak flux density greater than 4.5 times the local rms noise. The differential source counts are in good agreem...
متن کاملA Wide-area Vla Continuum Survey near the Galactic Center at 6 and 20 Cm Wavelengths
We describe the results of a mJy-sensitivity, VLA survey of roughly 1 square degree near the Galactic center at 6 and 20 cm. Catalogs of compact and filamentary structures are given and compared to previous surveys of the region. Eight of the unusual, nonthermal radio filaments are detected in 6 cm polarized emission; three of these are the first such detections, confirming their nonthermal nat...
متن کاملVLA observations of 6-cm excited OH
The VLA was used to determine precise positions for 4765-MHz OH maser emission sources toward star-forming regions which had been observed about seven months earlier with the Effelsberg 100-meter telescope. The observations were successful for K3-50, DR21EX, W75N, and W49A. No line was detected toward S255: this line had decreased to less than 5 per cent of the flux density observed only seven ...
متن کاملA Deep VLA Radio Continuum Survey of the Core and Outskirts of the Coma Cluster
We present deep 1.4 GHz Very Large Array (VLA) radio continuum observations of two ∼half square degree fields in the Coma cluster of galaxies. The two fields, “Coma 1” and “Coma 3,” correspond to the cluster core and southwest infall region and were selected on account of abundant pre-existing multiwavelength data. In their most sensitive regions the radio data reach 22 μJy rms per 4. 4 beam, s...
متن کاملA Deep VLA survey at 20cm of the ISO ELAIS survey regions
P. Ciliegi, R.G. McMahon, G. Miley, C. Gruppioni, M. RowanRobinson, C. Cesarsky, L. Danese, A. Franceschini, R. Genzel, A. Lawrence, D. Lemke, S. Oliver, J-L. Puget, B. Rocca-Volmerange 1 Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA 2 Osservatorio Astronomico di Bologna, via Zamboni 33, I-40126 Bologna, Italy 3 Leiden Observatory, P.O. Box 9513, 2300 RA, Le...
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ژورنال
عنوان ژورنال: Highlights of Astronomy
سال: 1986
ISSN: 1539-2996
DOI: 10.1017/s153929960000664x