M Dwarfs in SDSS Stripe 82: Photometric Light Curves and Flare Rate Analysis (2009)
Kowalski, A. F., Hawley, S. L., Hilton, E. J., Becker, A. C., West, A. A., Bochanski, J. J., ...
We present a flare rate analysis of 50,130 M dwarf light curves in SDSS Stripe 82. We identified 271 flares using a customized variability index to search ~2.5 million photometric observations for...
Steady and Transient Radio Emission from Ultracool Dwarfs (2009)
Osten, R. A., Phan-Bao, N., Hawley, S. L., Reid, I. Neill, Ojha, R.
We detect radio emission in an additional two epochs of the ultracool dwarf binary LP 349- 25, finding that the observed emission is broadband and steady on timescales between 10s and 10.7 hours, as...
Miceli, A., Rest, A., Stubbs, C. W., Hawley, S. L., Cook, K. H., Magnier, E. A., ...
We present 838 ab-type RR Lyrae stars from the Lowell Observatory Near Earth Objects Survey Phase I (LONEOS-I). These objects cover 1430 deg^2 and span distances ranging from 3-30 kpc from the...
From Radio to X-ray: The Quiescent Atmosphere of the dMe Flare Star EV Lacertae (2006)
Osten, R. A., Hawley, S. L., Allred, J., Johns-Krull, C. M., Brown, A., Harper, G. M.
We report on multi-wavelength observations spanning radio to X-ray wavelengths of the M dwarf flare star, EV Lacertae, probing the characteristics of the outer atmospheric plasma from the upper...
Rest, A., Stubbs, C., Becker, A. C., Miknaitis, G. A., Miceli, A., Covarrubias, R., ...
Characterizing the nature and spatial distribution of the lensing objects that produce the previously measured microlensing optical depth toward the Large Magellanic Cloud (LMC) remains an open...
Radiative Hydrodynamic Models of the Optical and Ultraviolet Emission from Solar Flares (2005)
Allred, J. C., Hawley, S. L., Abbett, W. P., Carlsson, M.
We report on radiative hydrodynamic simulations of moderate and strong solar flares. The flares were simulated by calculating the atmospheric response to a beam of non-thermal electrons injected at...
Berger, E., Rutledge, R. E., Reid, I. N., Bildsten, L., Gizis, J. E., Liebert, J., ...
We present the first simultaneous, multi-wavelength observations of an L dwarf, the L3.5 candidate brown dwarf 2MASS J00361617+1821104, conducted with the Very Large Array, the Chandra X-ray...
From Radio to X-ray: Flares on the dMe Flare Star EV Lacertae (2004)
Osten, R. A., Hawley, S. L., Allred, J. C., Johns-Krull, C. M., Roark, C.
We present the results of a campaign to observe flares on the M dwarf flare star EV Lacertae over the course of two days in 2001 September, utilizing a combination of radio continuum, optical...
The SuperMACHO Microlensing Survey (2004)
Becker, A. C., Rest, A., Stubbs, C., Miknaitis, G. A., Miceli, A., Covarrubias, R., ...
We present the first results from our next-generation microlensing survey, the SuperMACHO project. We are using the CTIO 4m Blanco telescope and the MOSAIC imager to carry out a search for...
Chandra Observation of V426 Oph: Weighing the Evidence for a Magnetic White Dwarf (2004)
Homer, Lee, Szkody, Paula, Raymond, John C., Fried, Robert E., Hoard, D. W., Hawley, S. L., ...
We report the results of a 45 ks Chandra observation of the cataclysmic variable V426 Ophiuchus. The high resolution spectrum from the high-energy transmission grating spectrometer is most consistent...
Meeting the Cool Neighbors VIII: A preliminary 20-parsec census from the NLTT catalogue (2004)
Reid, I. N., Cruz, K. L., Allen, P. R., Kilkenny, D., Liebert, J., Hawley, S. L., ...
Continuing our census of late-type dwarfs in the Solar Neighbourhood, we present BVRI photometry and optical spectroscopy of 800 mid-type M dwarfs drawn from the NLTT proper motion catalogue. The...
A Second Stellar Color Locus: a Bridge from White Dwarfs to M stars (2004)
Smolcic, V., Ivezic, Z., Knapp, G. R., Lupton, R. H., Pavlovski, K., Ilijic, S., ...
We report the discovery of a locus of stars in the SDSS g-r vs. u-g color-color diagram that connects the colors of white dwarfs and M dwarfs. While its contrast with respect to the main stellar...
Chandra x-ray results on v426 ophiuchi (2004)
Fried , Robert E., Hawley , S. L., Hoard , D. W., Homer , Lee, Raymond , John C., Szkody , Paula, ...
De las observaciones de 45 ks de Chandra de V426 Oph hemos obtenido espectros de rayos X de alta resolución con relación señal-a-ruido moderada, y una curva de luz no interrumpida de buena...
Meeting the Cool Neighbors VII: Spectroscopy of faint, red NLTT dwarfs (2003)
Reid, I. N., Cruz, K. L., Allen, P., Mungall, F., Kilkenny, D., Liebert, J., ...
We present low-resolution optical spectroscopy and BVRI photometry of 453 candidate nearby stars drawn from the NLTT proper motion catalogue. The stars were selected based on optical/near-infrared...
Discovery of a New Nearby Star (2003)
Teegarden, B. J., Pravdo, S. H., Hicks, M., Shaklan, S. B., Covey, K., Fraser, O., ...
We report the discovery of a nearby star with a very large proper motion of 5.06 +/- 0.03 arcsec/yr. The star is called SO025300.5+165258 and referred to herein as HPMS (high proper motion star). The...
Characterization of M,L and T dwarfs in the Sloan Digital Sky Survey (2002)
Hawley, S. L., Covey, K. R., Knapp, G. R., Golimowski, D. A., Fan, X., Collaboration, For The SDSS
An extensive sample of M, L and T dwarfs identified in the Sloan Digital Sky Survey (SDSS) has been compiled. The sample of 718 dwarfs includes 677 new objects (629 M dwarfs, 48 L dwarfs) together...
Gizis, J. E., Reid, I. N., Hawley, S. L.
We present high-resolution echelle spectroscopy of 676 nearby M dwarfs. Our measurements include radial velocities, equivalent widths of important chromospheric emission lines, and rotational...
Alcock, C., Allsman, R. A., Alves, D. R., Becker, A. C., Bennett, D. P., Cook, K. H., ...
We present a method for solving the lightcurve of an eclipsing binary system which contains a Cepheid variable as one of its components as well as the solutions for three eclipsing Cepheids in the...
Sloan Digital Sky Survey: Early data release (2002)
Stoughton, C., Lupton, R. H., Bernardi, M., Blanton, M. R., Burles, S., Castander, F. J., ...
The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of 10 6 galaxies, 100,000...
Alcock, C., Allsman, R. A., Alves, D. R., Becker, A. C., Bennett, D. P., Cook, K. H., ...
We present a method for solving the light curve of an eclipsing binary system that contains a Cepheid variable as one of its components as well as the solutions for three eclipsing Cepheids in the...
Optical Spectroscopy of Supernova 1993J During Its First 2500 Days (2000)
Matheson, T., Filippenko, A. V., Barth, A. J., Ho, L. C., Leonard, D. C., Bershady, M. A., ...
We present 42 low-resolution spectra of Supernova (SN) 1993J, our complete collection from the Lick and Keck Observatories, from day 3 after explosion to day 2454, as well as one Keck high-dispersion...
The Absolute Magnitude and Kinematics of RR Lyrae Stars via Statistical Parallax (1996)
Layden, A. C., Hanson, R. B., Hawley, S. L., Klemola, A. R., Hanley, C. J.
We present new statistical parallax solutions for the absolute magnitude and kinematics of RR Lyrae stars. New proper motion, radial velocity, and abundance data are used; the new data set is 50%...