The host galaxies of flat-spectrum quasars

Matt J. Jarvis, Ross J. McLure

Research output: Contribution to journalArticlepeer-review


We present the results of deep VLT-ISAAC Ks-band imaging of four /z~1.5 flat-spectrum quasars selected from the Parkes half-Jansky flat spectrum sample. We find that the hosts of these flat-spectrum quasars are consistent with lying on the /K-z Hubble relation for radio galaxies. This implies that the flat-spectrum quasar hosts fall in line with the expectations from orientation based unified schemes and also that they contain black holes of similar mass. Moreover, the width of the H/β broad emission line in these objects tends to be narrower than in their misaligned (low-frequency selected quasar) counterparts, implying that the width of the H/β broad emission line depends on source inclination, at least for radio-loud quasars, in line with previous studies.
Original languageEnglish
Pages (from-to)183-186
JournalNew Astronomy Reviews
Publication statusPublished - 1 Sep 2003

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