• Accretion Disk Temperatures Of QSOs: Constraints From The Emission Lines 

      Bonning, E. W.; Shields, Gregory A.; Stevens, A. C.; Salviander, Sarah (2013-06)
      We compare QSO emission-line spectra to predictions based on theoretical ionizing continua of accretion disks. The observed line intensities do not show the expected trend of higher ionization with theoretical accretion ...
    • Accretion Onto "Seed" Black Holes In The First Galaxies 

      Milosavljevic, Milos; Bromm, Volker; Couch, Sean M.; Oh, S. Peng (2009-06)
      The validity of the hypothesis that the massive black holes in high redshift quasars grew from stellar-sized "seeds" is contingent on a seed's ability to double its mass every few 10 million years. This requires that the ...
    • Accretion onto Intermediate-Mass Black Holes in Dense Protogalactic Clouds 

      Milosavljevi?, Miloš; Couch, Sean M.; Bromm, Volker (2009-05)
      We present the first results from two-dimensional simulations of radiatively efficient accretion of metal-free gas onto intermediate-mass black holes. We fix the shape of the spectral energy distribution of the radiation ...
    • The First Galaxies: Assembly With Black Hole Feedback 

      Jeon, Myoungwon; Pawlik, Andreas H.; Greif, Thomas H.; Glover, Simon C. O.; Bromm, Volker; Milosavljevic, Milos; Klessen, Ralf S. (2012-07)
      We study how the first galaxies were assembled under feedback from the accretion onto a central black hole (BH) that is left behind by the first generation of metal-free stars through self-consistent, cosmological simulations. ...
    • M31N-2007-06B: A Nova in the M31 Globular Cluster Bol 111 

      Shafter, A. W.; Quimby, R. M. (2007-12)
      We report spectroscopic observations of the nova M31N-2007-06b, which was found to be spatially coincident with the M31 globular cluster Bol 111. This nova is the first out of more than 700 discovered in M31 over the past ...
    • Planets Around Low-Mass Stars (PALMS). V. Age-Dating Low-Mass Companions To Members And Interlopers Of Young Moving Groups 

      Bowler, Brendan P.; Shkolnik, Evgenya L.; Liu, Michael C.; Schlieder, Joshua E.; Mann, Andrew W.; Dupuy, Trent J.; Hinkley, Sasha; Crepp, Justin R.; Johnson, John Asher; Howard, Andrew W.; Flagg, Laura; Weinberger, Alycia J.; Aller, Kimberly M.; Allers, Katelyn N.; Best, William M. J.; Kotson, Michael C.; Montet, Benjamin T.; Herczeg, Gregory J.; Baranec, Christoph; Riddle, Reed; Law, Nicholas M.; Nielsen, Eric L.; Wahhaj, Zahed; Biller, Beth A.; Hayward, Thomas L. (2015-06)
      We present optical and near-infrared adaptive optics (AO) imaging and spectroscopy of 13 ultracool (>M6) companions to late-type stars (K7-M4.5), most of which have recently been identified as candidate members of nearby ...