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Date and Time of the Query: 2019-05-24 T09:33:41 PDT
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Notes for object [HB89] 2000-330

3 note(s) found in NED.


1. 2004MNRAS.349..687B
Re:[HB89] 2000-330
1.2 [HB89] 2000-330 (z= 3.773) [HB89] 2000-330 is another radio-loud
(1.2 Jy at 5 GHz; see, for example, Hirabayashi et al. 2000) quasar
which has been observed with ROSAT. This quasar was also modelled with a
power law ({GAMMA} fixed at ~1.7) and was found to need no additional
absorption component above the (relatively large) Galactic value (Elvis
et al. 1994).

2. 2004A&A...424...91E
Re:PKS J2003-3251
J2003-3251 is the highest-redshift source in this group, and has a
probable core-jet morphology on VLBI scales (Fomalont et al. 2000).

3. 1994AJ....108..374B
Re:[HB89] 2000-330
2000-330, z_em_ = 3.78. Discovered in the course of the Parkes 2.7 GHz
flat spectrum survey, this object clearly has a "GHz peaked" radio
spectrum (Peterson et at 1982; Savage et al. 1990; O'Dea et al. 1991),
although most of the radio data are unpublished. The radio source is
unresolved at VLBI resolution (< 50 milliarcsec, full width half maximum,
Preston et al. 1989), and unpolarized at 6 cm (Saikia & Shastri 1984).
Radio and submillimeter fluxes from Wright et al. (1991), Quiniento
Cerosimo (1993), and Steppe et al. (1988) are shown in 10. An upper limit
at 962 microns is given by Robson et al. (1985). PKS 2000-330 was the
subject of a deep pointed observation with the IRAS satellite by
Neugebauer et al. (1986), but was not detected in any waveband. Near IR
photometry from Rodriquez-Espinosa et al. (1988) matches optical
spectrophotometry obtained more recently (Table 8. Fig. 10) indicating
that the quasar has not varied. An optically thick Lyman limit at
z_abs_ = 3.548 cuts off the continuum below ~4200A (Sargent et al. 1989,
and references therein).


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