Tag Archives: optical

Simultaneous Ultraviolet and Optical Emission-line Profiles of Quasars: Implications for Black Hole Mass Determination

Luis C. Ho (1), Paolo Goldoni (2,3), Xiao-Bo Dong (1,4), jenny E. Greene (5), and Gabriele Ponti (2,6) ((1) The Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USA; (2) Laboratoire Astroparticule et Cosmologie, … Continue reading

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Probing the properties of nebular plasmas with optical and IR spectroscopy

M. J. Barlow (Dept of Physics & Astronomy, University College London) Ionized nebulae provide spectacular probes of conditions that cannot easily be recreated in the laboratory. Their spectra are dominated by dipole-forbidden transitions from ions of carbon, nitrogen, oxygen, neon … Continue reading

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