The MACHO Project: Microlensing Results from 5.7 Years of Large Magellanic Cloud Observations
- C. Alcock, R. Allsman, D. Welch
- Physics
- 15 January 2000
We report on our search for microlensing toward the Large Magellanic Cloud (LMC). Analysis of 5.7 yr of photometry on 11.9 million stars in the LMC reveals 13-17 microlensing events. A detailed…
LSST: From Science Drivers to Reference Design and Anticipated Data Products
- vZeljko Ivezi'c, S. Kahn, for the Lsst Collaboration
- PhysicsAstrophysical Journal
- 15 May 2008
The LSST design is driven by four main science themes: probing dark energy and dark matter, taking an inventory of the solar system, exploring the transient optical sky, and mapping the Milky Way.
The MACHO Project Large Magellanic Cloud Microlensing Results from the First Two Years and the Nature of the Galactic Dark Halo
- C. Alcock, R. Allsman, D. Welch
- Physics
- 26 June 1996
The MACHO Project is a search for dark matter in the form of massive compact halo objects (MACHOs). Photometric monitoring of millions of stars in the Large Magellanic Cloud (LMC), Small Magellanic…
FIRST-YEAR SLOAN DIGITAL SKY SURVEY-II SUPERNOVA RESULTS: HUBBLE DIAGRAM AND COSMOLOGICAL PARAMETERS
- R. Kessler, A. Becker, D. York
- Physics
- 28 August 2009
We present measurements of the Hubble diagram for 103 Type Ia supernovae (SNe) with redshifts 0.04 < z < 0.42, discovered during the first season (Fall 2005) of the Sloan Digital Sky Survey-II…
MODELING THE TIME VARIABILITY OF SDSS STRIPE 82 QUASARS AS A DAMPED RANDOM WALK
- C. MacLeod, Ž. Ivezić, W. D. de Vries
- Physics
- 2 April 2010
We model the time variability of ∼9000 spectroscopically confirmed quasars in SDSS Stripe 82 as a damped random walk (DRW). Using 2.7 million photometric measurements collected over 10 yr, we confirm…
LSST Science Book, Version 2.0
- L. S. C. P. A. Abell, J. Allison, H. Zhan
- Physics
- 1 December 2009
A survey that can cover the sky in optical bands over wide fields to faint magnitudes with a fast cadence will enable many of the exciting science opportunities of the next decade. The Large Synoptic…
Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined with Other Cosmological Probes
- T. Davis, E. Mörtsell, A. Zenteno
- Physics
- 17 January 2007
The first cosmological results from the ESSENCE supernova survey (Wood-Vasey and coworkers) are extended to a wider range of cosmological models including dynamical dark energy and nonstandard…
The MACHO Project: Microlensing Optical Depth toward the Galactic Bulge from Difference Image Analysis
- C. Alcock, R. Allsman, D. Welch
- Physics
- 28 February 2000
We present the microlensing optical depth toward the Galactic bulge based on the detection of 99 events found in our Difference Image Analysis (DIA) survey. This analysis encompasses 3 yr of data,…
Observational Constraints on the Nature of Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey
- W. Wood-Vasey, G. Miknaitis, A. Zenteno
- Physics
- 2 January 2007
We present constraints on the dark energy equation-of-state parameter, w = P/(ρc2), using 60 SNe Ia from the ESSENCE supernova survey. We derive a set of constraints on the nature of the dark energy…
The MACHO Project Large Magellanic Cloud Variable Star Inventory. XI. Frequency Analysis of the Fundamental-Mode RR Lyrae Stars
We have frequency-analyzed 6391 variables classified earlier as fundamental-mode RR Lyrae (RR0) stars in the MACHO database on the Large Magellanic Cloud (LMC). The overwhelming majority (i.e., 96%)…
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