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Дата изменения: Sat Jan 10 17:37:56 1998 Дата индексирования: Sat Sep 11 20:37:09 2010 Кодировка: Поисковые слова: planetary nebula |
One of the Case galaxies appeared to be a distant
and bright AGN. This is CG 273 (= 09h39m05s.8,
=
+35
36'42", mCG=18 mag).
Only one prominent emission line is seen in the wavelength
range 3600 - 5500 Å. This broad emission line is centered at
4673 Å and its FWHM is 50 Å. We identify it with the MgII
doublet
2798 Å, the corresponding redshift is 0.670.
With the Hubble constant 75 km s-1Mpc-1 and q0=0.5
its absolute blue magnitude MB= -25 mag, which places CG 273 to
the class of quasars. We show its spectrum in Fig. 1.