PKS 0118-27
Abstract
R. Falomo, Osservatorio Astronomico di Padova, writes: "Low- resolution spectra (400-760 nm) of the BL Lac object PKS 0118-27 were obtained with the European Southern Observatory 1.52-m reflector (+ Boller and Chivens spectrograph + CCD) on Aug. 7, 10, and 12. A narrow absorption feature (equivalent width = 0.2 nm) at 436.5 nm was observed over a power-law continuum (alpha(lambda) = -0.7; V = 16.1). A tentative identification with Mg II (280.0 nm) yields an absorption redshift z = 0.56, and hence an absolute magnitude Mv <= -27.1 (Ho = 50 km s-1 Mpc-1; deceleration parameter qo = 0)."
- Publication:
-
International Astronomical Union Circular
- Pub Date:
- October 1989
- Bibcode:
- 1989IAUC.4873....2F