Institution
San Francisco State University
Education•San Francisco, California, United States•
About: San Francisco State University is a education organization based out in San Francisco, California, United States. It is known for research contribution in the topics: Population & Planet. The organization has 5669 authors who have published 11433 publications receiving 408075 citations. The organization is also known as: San Francisco State & San Francisco State Normal School.
Topics: Population, Planet, Poison control, Exoplanet, Planetary system
Papers published on a yearly basis
Papers
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Liverpool John Moores University1, Space Telescope Science Institute2, Herzberg Institute of Astrophysics3, Spanish National Research Council4, Rochester Institute of Technology5, Queen's University6, Cardiff University7, Max Planck Society8, Swinburne University of Technology9, University of Florida10, Johns Hopkins University11, Goddard Space Flight Center12, Autonomous University of Madrid13, University of Waterloo14, University of Bristol15, University of Texas at Austin16, Subaru17, Durham University18, San Francisco State University19, National Radio Astronomy Observatory20, University of Tokyo21, Kapteyn Astronomical Institute22, INAF23, University of Cambridge24, University of Hawaii25
TL;DR: The HST ACS Coma Cluster Treasury survey as discussed by the authors was designed to cover an area of 740 arcmin2 in regions of different density of both galaxies and intergalactic medium within the Coma cluster.
Abstract: We describe the HST ACS Coma Cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma Cluster (Abell 1656). The survey was designed to cover an area of 740 arcmin2 in regions of different density of both galaxies and intergalactic medium within the cluster. The ACS failure of 2007 January 27 leaves the survey 28% complete, with 21 ACS pointings (230 arcmin2) complete, and partial data for a further four pointings (44 arcmin2). The predicted survey depth for 10 σ detections for optimal photometry of point sources is g' = 27.6 in the F475W filter and IC = 26.8 mag in F814 (AB magnitudes). Initial simulations with artificially injected point sources show 90% recovered at magnitude limits of g' = 27.55 and IC = 26.65. For extended sources, the predicted 10 σ limits for a 1 arcsec2 region are g' = 25.8 mag arcsec−2 and IC = 25.0 mag arcsec−2. We highlight several motivating science goals of the survey, including study of the faint end of the cluster galaxy luminosity function, structural parameters of dwarf galaxies, stellar populations and their effect on colors and color gradients, evolution of morphological components in a dense environment, the nature of ultracompact dwarf galaxies, and globular cluster populations of cluster galaxies of a range of luminosities and types. This survey will also provide a local rich cluster benchmark for various well-known global scaling relations and explore new relations pertaining to the nuclear properties of galaxies.
104 citations
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University of Toronto1, Carnegie Institution for Science2, Johns Hopkins University3, Swinburne University of Technology4, Max Planck Society5, Herzberg Institute of Astrophysics6, University of Arizona7, DSM8, Massachusetts Institute of Technology9, University of Chicago10, San Francisco State University11
TL;DR: In this article, the cumulative mass density in morphologically selected early-type galaxies over the redshift range 0.8 < z < 1.7 was measured using the Hubble Space Telescope's Advanced Camera for Surveys.
Abstract: We have used the Hubble Space Telescope's Advanced Camera for Surveys (Ford et al. 2003) to measure the cumulative mass density in morphologically selected early-type galaxies over the redshift range 0.8 < z < 1.7. Our imaging data set covers four well-separated sight lines and is roughly intermediate (in terms of both depth and area) between the GOODS/GEMS imaging data and the images obtained in the Hubble Deep Field campaigns. Our images contain 144 galaxies with ultradeep spectroscopy obtained as part of the Gemini Deep Deep Survey. These images have been analyzed using a new purpose-written morphological analysis code, which improves the reliability of morphological classifications by adopting a quasi-Petrosian image thresholding technique. We find that at z ~ 1 about 80% of the stars living in the most massive galaxies reside in early-type systems. This fraction is similar to that seen in the local universe. However, we detect very rapid evolution in this fraction over the range 0.8 < z < 1.7, suggesting that over this redshift range the strong morphology-mass relationship seen in the nearby universe is beginning to fall into place. By comparing our images to published spectroscopic classifications, we show that little ambiguity exists in connecting spectral classes to morphological classes for spectroscopically quiescent systems. However, the mass density function of early-type galaxies is evolving more rapidly than that of spectroscopically quiescent systems, which we take as further evidence that we are witnessing the formation of massive early-type galaxies over the 0.8 < z < 1.7 redshift range.
104 citations
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TL;DR: It is suggested that various degrees of increased creative ability may continue for at least some weeks subsequent to a psychedelic problem-solving session, particularly in the “illumination phase.”
Abstract: Based on the frequently reported similarities between creative and psychedelic (drug-induced, consciousness-expansion) experiences, a preliminary study was conducted to explore the effects of psychedelic agents (LSD-25, mescaline) on creative problem-solving ability. Twenty-seven professionally employed males were given a single psychedelic experience in 1 of 7 small groups (ns = 3 or 4) following extensive selection and preparatory procedures. This drug-induced problem-solving session was carefully structured with particular focus on establishing Ss' expectancies and a psychosocial milieu conducive to creative activity. Tentative findings based on tests of creativity, on subjective reports and self ratings, and on the utility of problem solutions suggested that, if given according to this carefully structured regimen, psychedelic agents seem to facilitate creative problem-solving, particularly in the “illumination phase.” The results also suggest that various degrees of increased creative ability may con...
104 citations
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TL;DR: In this article, the role of Wnts in periodic feather patterning was examined by misexpression in vitro using reconstituted E7 skin explant cultures.
103 citations
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TL;DR: An overview of the published literature on NIS zooplankton is provided, and some aspects of the trophic (predator–prey) ecology of these two invasive copepods are examined, finding that they are likely to be important in the flow of material and energy in the systems in which they now pervade, although their impacts at the ecosystem level remain to be quantified.
Abstract: Invasions of aquatic habitats by non-indigenous species (NIS), including zooplankton, are occurring at an alarming rate and are causing global concern. Although hundreds of such invasions have now been documented, surprisingly little is known about the basic biology and ecology of these invaders in their new habitats. Here we provide an overview of the published literature on NIS zooplankton, separated by life history (holoplankton vs. meroplankton), habitat (marine, estuarine, freshwater), and biological level of organization or topic (e.g. distribution and range extension, physiology, behavior, feeding, community impacts, ecosystem dynamics, etc). Amongst the many findings generated by our literature search, perhaps the most striking is the paucity of studies on community and ecosystem level impacts of NIS zooplankton, especially in marine and estuarine systems. We also present some results from two ongoing studies of invasive zooplankton in the northeast Pacific Ocean – Pseudodiaptomus inopinus in Washington and Oregon coastal estuaries, and Tortanus dextrilobatus in San Francisco Bay. Both of these Asian copepods have recently expanded their range and can at times be extremely abundant (10 3 m −3 ). We also examine some aspects of the trophic (predator–prey) ecology of these two invasive copepods, and find that they are likely to be important in the flow of material and energy in the systems in which they now pervade, although their impacts at the ecosystem level remain to be quantified. Finally, the findings of both our literature search and our two case studies of invasive zooplankton lead us to make several recommendations for future research.
103 citations
Authors
Showing all 5744 results
Name | H-index | Papers | Citations |
---|---|---|---|
Yuri S. Kivshar | 126 | 1845 | 79415 |
Debra A. Fischer | 121 | 567 | 54902 |
Sandro Galea | 115 | 1129 | 58396 |
Vijay S. Pande | 104 | 445 | 41204 |
Howard Isaacson | 103 | 575 | 42963 |
Paul Ekman | 99 | 235 | 84678 |
Russ B. Altman | 91 | 611 | 39591 |
John Kim | 90 | 406 | 41986 |
Santi Cassisi | 89 | 471 | 30757 |
Peng Zhang | 88 | 1578 | 33705 |
Michael D. Fayer | 84 | 537 | 26445 |
Raymond G. Carlberg | 84 | 316 | 28674 |
Geoffrey W. Marcy | 83 | 550 | 82309 |
Ten Feizi | 82 | 381 | 23988 |
John W. Eaton | 82 | 298 | 26403 |