Journal article

Limits to Rest-frame Ultraviolet Emission from Far-infrared-luminous z similar or equal to 6 Quasar Hosts

MA Marshall, M Mechtley, RA Windhorst, SH Cohen, RA Jansen, L Jiang, VR Jones, JSB Wyithe, X Fan, NP Hathi, K Jahnke, WC Keel, AM Koekemoer, V Marian, K Ren, J Robinson, HJA Rottgering, RE Ryan, E Scannapieco, DP Schneider Show all



We report on a Hubble Space Telescope search for rest-frame ultraviolet emission from the host galaxies of five far-infrared-luminous z sime 6 quasars and the z = 5.85 hot-dust-free quasar SDSS J0005–0006. We perform 2D surface brightness modeling for each quasar using a Markov Chain Monte Carlo estimator, to simultaneously fit and subtract the quasar point source in order to constrain the underlying host galaxy emission. We measure upper limits for the quasar host galaxies of mJ > 22.7 mag and mH > 22.4 mag, corresponding to stellar masses of M* < 2 × 1011M⊙. These stellar mass limits are consistent with the local MBH − M* relation. Our flux limits are consistent with those predicted for th..

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University of Melbourne Researchers


Awarded by NASA from the Space Telescope Science Institute

Awarded by NASA

Awarded by NASA JWST Interdisciplinary Scientist from GSFC

Awarded by Australian Research Council Centre of Excellence

Awarded by Extraterrestrische Verbundforschung program of the German Space Agency, DLR

Funding Acknowledgements

We thank the anonymous referee for their valuable feedback, which helped to improve the quality of this paper. We thank Tony Roman, Tricia Royle, and the Space Telescope Science Institute staff for their continued excellent help in scheduling our nonstandard HST observations-they went beyond the call of duty to make the best possible HST data happen. We acknowledge support provided by NASA through grants GO-12332.*A, GO-12974.*A, and GO-12613.*A from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. This work was supported by NASA JWST Interdisciplinary Scientist grants NAG5-12460, NNX14AN10G, and 80NSSC18K0200 to R.A.W. from GSFC. This research was supported by the Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project No. CE170100013. M.A.M. acknowledges the support of an Australian Government Research Training Program (RTP) Scholarship. M.M. and K.J. acknowledge support through the Extraterrestrische Verbundforschung program of the German Space Agency, DLR, grant No. 50 OR 1203.This work was partially performed on the OzSTAR national facility at Swinburne University of Technology. OzSTAR is funded by Swinburne University of Technology and the National Collaborative Research Infrastructure Strategy (NCRIS). This research made use of Python packages NumPy (van der Walt et al. 2011), Matplotlib (Hunter 2007), AstroPy (Astropy Collaboration et al. 2013), Pandas (Pandas Development Team 2020), SciPy (Virtanen et al. 2020), emcee (Foreman-Mackey et al. 2013), and corner (ForemanMackey 2016).