NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-23 T15:21:56 PDT
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Notes for object [HB89] 1831-711

2 note(s) found in NED.


1. 2008ApJS..175..314D
Re:VSOP J1837-7108
J1837-7108.-The core is 0.2 mas in size, and there is extended structure. We
model this to the south; however, there is some ambiguity as to whether it is
actually to the south or the north.

2. 2004A&A...424...91E
Re:PKS J1837-7108
J1837-7108: the spectrum is relatively broad, with a resulting spectral
index between 22 and 89 GHz of -0.4, however the 146 GHz flux density of
0.73 Jy (Beasley et al. 1997) indicates the spectrum steepens, with a
spectral index of -0.95 between 89 and 146 GHz. The PKSCAT flux density
of 1.15 Jy at 5.0 GHz (Wright & Otrupcek 1990) is roughly half that of
the corresponding values from the PMN survey, 2.29 Jy (Wright et
al. 1994), and the ATCA monitoring, 2.39 Jy. Similarly, the PKSCAT flux
density at 2.7 GHz of 1.32 Jy is ~65% of the 2.02 Jy in the ATCA
monitoring, suggesting the source has brightened significantly over the
intervening period.


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