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arxiv: astro-ph/9912499 · v1 · pith:LJYXT5CJnew · submitted 1999-12-23 · 🌌 astro-ph

RC J1148+0455 identification: gravitational lens or group of galaxies ?

O.V. Verkhodanov (1) , A.I. Kopylov (1) , Yu.N. Parijskij (1) , N.S. Soboleva (1) , O.P. Zhelenkova (1) , A.V. Temirova (1) , J.Winn (2) , A.Fletcher (2)
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B. Burke (2) ((1) Special Astrophysical Observatory of Russian Academy of Sciences; (2) Massachusetts Institute of Technology USA)
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keywords radiosourcecataloguegalaxiesgroupstructurealphaanalysed
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The structure of the radio source RC B1146+052 of the ``Cold'' catalogue is investigated by data of the MIT-GB-VLA survey at 4850 MHz. This source belongs to the steep spectrum radio sources subsample of the RC catalogue. Its spectral index is $\alpha$ = -1.04. The optical image of this source obtained with 6m telescope is analysed. The radio source center is situated in a group of 8 galaxies of about 24$^m$ in the R-filter. The possible explanations of the complex structure of radio components are considered.

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