NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-25 T09:41:46 PDT
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Notes for object [HB89] 1244-255

5 note(s) found in NED.


1. 2004ApJS..155...33S
Re:VSOP J1246-2547
The extension from the core is in the same direction as the extended
emission seen in the VLBApls and VLBA2cm2 images.

2. 2003AJ....126.2237D
Re:[HB89] 1244-255
.
4.7. Quasars
.
There are a number of known radio-loud quasars in the radio-excess
sample: PKS 0104-408 (F01044-4050), Q0521-365 (F05212-3630), Q0558-504
(F05585-5026), Q0637-752 (F06374-7513), Q1244-255 (F12440-2531),
3C 345 (F16413+3954), PKS 2313-477 (F23135-4745), and Q2349-014
(F23493-0126). These objects all have high radio powers [L_{nu}_(4.8
GHz) > 10^25^ W Hz^-1^] and FIR luminosities {nu}L_{nu}_(60 micron) >
10^10.7^L_solar_. All but one of these quasars have large radio
excesses with u < -0.2; Q0558-504 is the exception.

3. 1999ApJS..122...29B
Re:MRC 1244-255
MRC B1244-255. - Mg II shows a prominent narrow component.

4. 1998AJ....115.1357S
Re:PKS 1244-255
PKS 1244-255 (Fig. 1n).--This source is a blazar (Bersanelli et al. 1992),
having violent optical variation (Bozyan et al. 1990 and references therein) and
high optical polarization (Impey & Tapia 1988, 1990). It has strong emission
lines corresponding to a redshift of z=0.638 (Falomo, Scarpa, & Bersanelli
1994).
VLBI observations yielded correlated flux densities of 0.48 Jy at 2.3 GHz, 1.01
Jy at 8.4 GHz (Morabito et al. 1986), and 0.91 Jy at 22 GHz (Moellenbrock et
al. 1996). Our VLBI image shows a simple compact core elongated at a position
angle of 116^deg^, with a brightness temperature of 5.6x10^11^ K. This is
consistent with the measurement of a lower limit of 4.0x10^11^ K from the
22 GHz survey.

5. 1994ApJS...93..125F
Re:[HB89] 1244-255
1244-255.Spectra of this radio-selected source (Impey & Tapia 1988) show
a very strong emission line identified with Mg II(2798A) at z = 0.638.
The optical energy distribution is described by a power law model.


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