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  1. Article

    Open Access

    Mid-twenty-first century climate change in the Central United States. Part II: Climate change processes

    Ensemble regional model simulations over the central US with 30-km resolution are analyzed to investigate the physical processes of projected precipitation changes in the mid-twenty-first century under greenho...

    C. M. Patricola, K. H. Cook in Climate Dynamics (2013)

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  2. No Access

    Article

    One or more bound planets per Milky Way star from microlensing observations

    A statistical analysis of microlensing data from 2002–07 reveals that stars in the Milky Way are orbited by planets as a rule, rather than an exception.

    A. Cassan, D. Kubas, J.-P. Beaulieu, M. Dominik, K. Horne, J. Greenhill… in Nature (2012)

  3. Article

    Open Access

    Sub-Saharan Northern African climate at the end of the twenty-first century: forcing factors and climate change processes

    A regional climate model, the Weather Research and Forecasting (WRF) Model, is forced with increased atmospheric CO2 and anomalous SSTs and lateral boundary conditions derived from nine coupled atmosphere–ocean g...

    C. M. Patricola, K. H. Cook in Climate Dynamics (2011)

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  4. No Access

    Article

    Discovery of a cool planet of 5.5 Earth masses through gravitational microlensing

    Over 170 extrasolar planets have so far been discovered, with a wide range of masses and orbital periods, but until last July no planet of Neptune's mass or less had been detected any more than 0.15 astronomic...

    J.-P. Beaulieu, D. P. Bennett, P. Fouqué, A. Williams, M. Dominik… in Nature (2006)

  5. No Access

    Chapter and Conference Paper

    A Next Generation Microlensing Search: SuperMacho

    Past microlensing experiments such as the MACHO project have discovered the presence of a larger than expected number of microlensing events towards the Large Magellanic Cloud (LMC). These events could represe...

    A. J. Drake, A. C. Becker, A. Clocchiati… in Dark Matter in Astro- and Particle Physics (2002)

  6. No Access

    Article

    Direct detection of a microlens in the Milky Way

    The nature of dark matter remains mysterious, with luminous material accounting for at most ∼25 per cent of the baryons in the Universe1,2. We accordingly undertook a survey looking for the microlensing of stars ...

    C. Alcock, R. A. Allsman, D. R. Alves, T. S. Axelrod, A. C. Becker, D. P. Bennett… in Nature (2001)

  7. No Access

    Chapter and Conference Paper

    The MACHO Project 5.7 Year LMC Results

    The MACHO collaboration has analyzed 5.7years of photometry on approximately 11.7 million stars in the Large Magellanic Cloud (LMC) in a search for gravitational microlensing events. Two sets of cuts were used...

    M. J. Lehner, C. Alcock, R. A. Allsman… in Dark Matter in Astro- and Particle Physics (2001)

  8. No Access

    Chapter and Conference Paper

    Properties of LMC Planetary Nebulae and Parent Populations in the MACHO Database

    The MACHO microlensing experiment’s time-sampled photometry database contains blue and red lightcurves for nearly 9 million stars in the central bar region of the Large Magellanic Cloud (LMC). We have identifi...

    D. R. Alves, C. Alcock, R. A. Allsman, T. S Axelrod, A. C Becker… in Planetary Nebulae (1997)

  9. No Access

    Chapter and Conference Paper

    Bulge δ Scuti Stars in the Macho Database

    We describe the search for δ Scuti stars in the MACHO database of bulge fields. Concentrating on a sample of high amplitude δ Scutis, we examine the light curves and pulsation modes. We also discuss their spat...

    D. Minniti, C. Alcock, D. R. Alves… in Fundamental Stellar Properties: The Intera… (1997)

  10. No Access

    Chapter and Conference Paper

    Statistical Issues in the MACHO Project

    The MACHO project is an ongoing survey project which collects photometric timeseries data on roughly 20 million stars in the LMC, SMC, and Galactic bulge. The data is irregularly time sampled, largely due to w...

    T. S. Axelrod, C. Alcock, R. A. Allsman… in Statistical Challenges in Modern Astronomy… (1997)

  11. No Access

    Chapter and Conference Paper

    Optical variability of the LMC supersoft source RX J0513.9-6951

    We present optical spectroscopy and photometry of the LMC supersoft source (SSS) RX J0513.9-6951. Through the exceptional monitoring capabilities of the MACHO project, we show the optical history of this objec...

    K. A. Southwell, M. Livio, P. A. Charles, W. Sutherland… in Supersoft X-Ray Sources (1996)

  12. No Access

    Chapter and Conference Paper

    The CCD Array Camera for the Macho Project

    We have developed an astronomical imaging system tailored to our search for gravitational microlensing by compact objects in the halo and disk of the Galaxy. The challenge of detecting rare microlensing events...

    S. Marshall, C. Alcock, C. W. Akerlof, R. A. Allsman… in Astronomy from Wide-Field Imaging (1994)

  13. No Access

    Article

    Possible gravitational microlensing of a star in the Large Magellanic Cloud

    THERE is now abundant evidence for the presence of large quantities of unseen

    C. Alcock, C. W. Akerlof, R. A. Allsman, T. S. Axelrod, D. P. Bennett, S. Chan… in Nature (1993)

  14. No Access

    Chapter and Conference Paper

    The search for massive compact halo objects

    We are develo** a dedicated, semi-automatic system with which we will conduct a definitive search for massive objects (such as brown dwarfs and Jupiters) which plausibly might comprise the dark matter in the...

    C. Alcock, T. S. Axelrod, D. P. Bennett, K. H. Cook, H. -S. Park… in Gravitational Lenses (1992)

  15. No Access

    Chapter and Conference Paper

    The AGB Population of Nearby Galaxies

    We report the results of a preliminary survey for carbon and M stars in Local Group galaxies using a newly developed photometric technique. The surveyed objects include M31, M33, NGC 6822, IC 1613, and WLM. Th...

    M. Aaronson, K. H. Cook, J. Norris in Spectral Evolution of Galaxies (1986)

  16. No Access

    Chapter

    Studies on the Enzymology of Excision Repair in Extracts of Mammalian Cells

    Damaged bases in DNA can be removed by at least two distinct mechanisms referred to as nucleotide excision repair and base excision repair. Our studies on the molecular mechanisms of excision repair in mammali...

    E. C. Friedberg, K. H. Cook, K. Mortelmans, J. Rudé in Research in Photobiology (1977)

  17. No Access

    Article

    Halogenverbindungen

    R. W. Hoff, W. A. Cook, K. H. Cook in Zeitschrift für analytische Chemie (1934)