Adam F. Kowalski

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Groundand space-based planet searches employing radial velocity techniques and transit photometry have detected thousands of planet-hosting stars in the Milky Way. With so many planets discovered, the next step toward identifying potentially habitable planets is atmospheric characterization. While the Sun–Earth system provides a good framework for(More)
We present a spectroscopic catalog of 70,841 visually inspected M dwarfs from the seventh data release of the Sloan Digital Sky Survey. For each spectrum, we provide measurements of the spectral type, a number of molecular band heads, and the Hα, Hβ, Hγ , Hδ, and Ca ii K emission lines. In addition, we calculate the metallicity-sensitive parameter ζ and(More)
We analyze optical spectra of a two-ribbon, long duration C1.1 flare that occurred on 18 Aug 2011 within AR 11271 (SOL2011-08-18T15:15). The impulsive phase of the flare was observed with a comprehensive set of space-borne and ground-based instruments, which provide a range of unique diagnostics of the lower flaring atmosphere. Here we report the detection(More)
The asymmetries observed in the line profiles of solar flares can provide important diagnostics of the properties and dynamics of the flaring atmosphere. In this paper the evolution of the Hα and Ca ii 8542 Å lines are studied using high spatial, temporal and spectral resolution ground-based observations of an M1.1 flare obtained with the Swedish 1-m Solar(More)
R. Lynne Jones, Lucianne M. Walkowicz, Julius Allison, Scott F. Anderson, Andrew C. Becker, Joshua S. Bloom, John J. Bochanski, W. N. Brandt, Mark W. Claire, Kem H. Cook, Christopher S. Culliton, Rosanne Di Stefano, S.G. Djorgovski, Ciro Donalek, Derek B. Fox, Muhammad Furqan, A. Gal-Yam, Robert R. Gibson, Suzanne L. Hawley, Eric J. Hilton, Keri Hoadley,(More)
We present the flare occurrence rates and starspot evolution for GJ 1245 A and B, two active M5 stars, based on nine months of Kepler short cadence observations, and four years of nearly continuous long cadence observations. The A component is separated from the B component by 7′′, and the stars are not resolved in the Kepler pipeline processing due to(More)
1. Asthma is the third leading cause of preventable hospitalization in the United States and has accounted for more than 3 million lost workdays. 2. Understanding the stepwise approach and the medications used to control asthma can reduce exacerbations which can contribute to reduction in costly emergency department visits. 3. Education is the key to(More)
The eruptive variable V838 Monocerotis gained notoriety in 2002 when it brightened nine magnitudes in a series of three outbursts and then rapidly evolved into an extremely cool supergiant. We present optical, near-IR, and mid-IR spectroscopic and photometric observations of V838 Monocerotis obtained between 2008 and 2012 at the Apache Point Observatory(More)
Preamble The Large Observatory for X-ray Timing, LOFT, is specifically designed to perform fast X-ray timing and spectroscopy (Feroci et al. 2014). LOFT focuses on two fundamental questions from ESA's Cosmic Vision Theme: what is the equation of state of ultra-dense matter in neutron stars and does matter orbiting close to the event horizon follow the(More)