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Open Access Publications from the University of California

Scholarly Works (3 results)

  • Article
Technical Completion Reports (1997)

Sediment cores were raised from fringing marshes along the northern reach of the San Francisco Bay. A variety of stratigraphic analyses were utilized to reconstruct sea level and river flow (salinity) over the past 7000 yr. Over thirty A.M.S. dates provide chronostratigraphic control. An overall trend in RSL rise of 0.12-0.14 cm/yr is established for the northern reach of the estuary. River discharge was broadly comparable to modem flows. However, an extended period of higher flow commenced approximately 3800 yr and continued for almost 2 millennia. Superimposed upon these general trends are numerous short-term events. Acute droughts and salinity intrusion occurred during the period of high river flow. No extreme flood events are noted during this period, although evidence for abnormally high discharge occurs at other times.

    Cover page: Long Term Variability of Fresh Water Flow into the San Francisco Estuary using Paleoclimatic Methods
    • Article
    • Peer Reviewed
    UCLA Previously Published Works (2016)
    We present a compilation of UBVRIz light curves of 51 type II supernovae discovered during the course of four different surveys during 1986-2003: the Cerro Tololo Supernova Survey, the Calán/Tololo Supernova Program (C&T), the Supernova Optical and Infrared Survey (SOIRS), and the Carnegie Type II Supernova Survey (CATS). The photometry is based on template-subtracted images to eliminate any potential host galaxy light contamination, and calibrated from foreground stars. This work presents these photometric data, studies the color evolution using different bands, and explores the relation between the magnitude at maximum brightness and the brightness decline parameter (s) from maximum light through the end of the recombination phase. This parameter is found to be shallower for redder bands and appears to have the best correlation in the B band. In addition, it also correlates with the plateau duration, being shorter (longer) for larger (smaller) s values.
      Cover page: UBVRIz LIGHT CURVES OF 51 TYPE II SUPERNOVAE
      • Article
      • Peer Reviewed
      UC Irvine Previously Published Works (2019)
      (Abridged) The Maunakea Spectroscopic Explorer (MSE) is an end-to-end science platform for the design, execution and scientific exploitation of spectroscopic surveys. It will unveil the composition and dynamics of the faint Universe and impact nearly every field of astrophysics across all spatial scales, from individual stars to the largest scale structures in the Universe. Major pillars in the science program for MSE include (i) the ultimate Gaia follow-up facility for understanding the chemistry and dynamics of the distant Milky Way, including the outer disk and faint stellar halo at high spectral resolution (ii) galaxy formation and evolution at cosmic noon, via the type of revolutionary surveys that have occurred in the nearby Universe, but now conducted at the peak of the star formation history of the Universe (iii) derivation of the mass of the neutrino and insights into inflationary physics through a cosmological redshift survey that probes a large volume of the Universe with a high galaxy density. MSE is positioned to become a critical hub in the emerging international network of front-line astronomical facilities, with scientific capabilities that naturally complement and extend the scientific power of Gaia, the Large Synoptic Survey Telescope, the Square Kilometer Array, Euclid, WFIRST, the 30m telescopes and many more.
        Cover page: The Detailed Science Case for the Maunakea Spectroscopic Explorer, 2019 editionCreative Commons 'BY' version 4.0 license
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