Richard F. Green

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Observations of nearby galaxies reveal a strong correlation between the mass of the central dark object M• and the velocity dispersion σ of the host galaxy, of the form log(M•/M⊙) = α + β log(σ/σ0); however, published estimates of the slope β span a wide range (3.75 to 5.3). Merritt & Ferrarese have argued that low slopes (. 4) arise because of neglect of(More)
Although the numbers of known quasars and active galactic nuclei (AGN) have grown considerably in the past decade, a vast amount of discovery space remains to be explored with much larger and deeper samples. LSST will revolutionize our understanding of the growth of supermassive black holes with cosmic time, AGN fueling mechanisms, the detailed physics of(More)
Enveloped viruses are excellent tools for the study of the biogenesis of epithelial polarity, because they bud asymmetrically from confluent monolayers of epithelial cells and because polarized budding is preceded by the accumulation of envelope proteins exclusively in the plasma membrane regions from which the viruses bud. In this work, three different(More)
We describe a correlation between the mass M of a galaxy’s central black hole and the luminosity-weighted line-of-sight velocity dispersion e within the half-light radius. The result is based on a sample of 26 galaxies, including 13 galaxies with new determinations of black hole masses from Hubble Space Telescope measurements of stellar kinematics. The(More)
Two lectin-resistant mutants derived from Madin Darby canine kidney cells, with constitutive alterations in the asparagine-linked carbohydrate moieties, retained the characteristic structural and functional epithelial polarity of the parental cells. A ricin-resistant cell line was unable to incorporate galactose-sialic acid into glycoproteins and, from the(More)
The neutral hydrogen (H I) and ionized helium (He II) absorption in the spectra of quasars are unique probes of structure in the early universe. We present Far-Ultraviolet Spectroscopic Explorer observations of the line of sight to the quasar HE2347-4342 in the 1000 to 1187 angstrom band at a resolving power of 15,000. We resolve the He II Lyman alpha(More)
Insect parasitoids search for their hosts using a method that may be broken into three parts. First, they locate plants which may harbor their hosts, then they assess the quality of these plants to decide whether to search them further for hosts and, finally, if they decide to accept a plant for further search, they exploit the plant by searching for hosts(More)
We have identified a series of mutations in the signal peptide of yeast prepro-alpha-factor which specifically attenuate translocation across the endoplasmic reticulum membrane in vivo. In prepro-alpha-factor-somatostatin hybrids, transposition of the amino-terminal tripeptide from wild-type NH2-Met-Arg-Phe to NH2-Met-Phe-Lys or NH2-Met-Phe-Arg causes a(More)