C
C. Martin Gaskell
Researcher at University of California, Santa Cruz
Publications - 22
Citations - 543
C. Martin Gaskell is an academic researcher from University of California, Santa Cruz. The author has contributed to research in topics: Active galactic nucleus & Balmer series. The author has an hindex of 11, co-authored 22 publications receiving 470 citations. Previous affiliations of C. Martin Gaskell include Valparaiso University & University of Michigan.
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Journal ArticleDOI
Radius-luminosity and mass-luminosity relationships for active galactic nuclei
TL;DR: In this article, the authors derived the mass (M) of the central objects of ten active galactic nuclei (AGNs) in a uniform manner, using the luminosity-weighted C IV 1549-emitting BLR radius (R) and the bolometric luminosity L(Bol).
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Emission-line properties of optically and radio-selected complete quasar samples
TL;DR: In this article, it was shown that the equivalent width of the major UV emission lines decrease with increasing continuum luminosity (the Baldwin effect) and that the (Ly-alpha + N V)/C IV and 1909 A/C IV intensity ratios are also luminosity-dependent by virtue of the C IV luminosity dependence.
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Relative quasar luminosities determined from emission line strengths
TL;DR: In this paper, observations of flat radio spectrum QSOs selected from complete samples confirm the strong correlation between continuum luminosity and emission line equivalent width, and show that the luminosity of QSO emission lines increase as the 1/3 power of the continuum spectrum luminosity.
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The case for cases B and C: intrinsic hydrogen line ratios of the broad-line region of active galactic nuclei, reddenings, and accretion disc sizes
TL;DR: In this article, very blue active galactic nuclei (AGNs) with extremely blue optical spectral indices are shown to have a mean, velocity-averaged, broad-line H$\alpha$/H$\beta$ ratio of roughly 2.72 \pm 0.04, consistent with a Baker-Menzel Case B value.
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The production of strong, broad He ii emission after the tidal disruption of a main-sequence star by a supermassive black hole
TL;DR: In this paper, the authors show that the profile of He II 4686 in PS1-10jh is similar to the blueshifted profiles of high-ionization lines in AGNs.