Search Results - "BREWER, John M."

C/O AND Mg/Si RATIOS OF STARS IN THE SOLAR NEIGHBORHOOD by Brewer, John M., Fischer, Debra A.

“…ABSTRACT The carbon-to-oxygen ratio in a protoplanetary disk can have a dramatic influence on the compositions of any terrestrial planets formed. In regions of…”
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Kronos and Krios: Evidence for Accretion of a Massive, Rocky Planetary System in a Comoving Pair of Solar-type Stars by Oh, Semyeong, Price-Whelan, Adrian M., Brewer, John M., Hogg, David W., Spergel, David N., Myles, Justin

“…We report and discuss the discovery of a significant difference in the chemical abundances of a comoving pair of bright solar-type stars, HD 240430 and HD…”
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A Physically Motivated and Empirically Calibrated Method to Measure the Effective Temperature, Metallicity, and Ti Abundance of M Dwarfs by Veyette, Mark J., Muirhead, Philip S., Mann, Andrew W., Brewer, John M., Allard, France, Homeier, Derek

“…The ability to perform detailed chemical analysis of Sun-like F-, G-, and K-type stars is a powerful tool with many applications, including studying the…”
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EXPRES. IV. Two Additional Planets Orbiting ρ Coronae Borealis Reveal Uncommon System Architecture by Brewer, John M., Zhao, Lily L., Fischer, Debra A., Roettenbacher, Rachael M., Henry, Gregory W., Llama, Joe, Szymkowiak, Andrew E., Cabot, Samuel H. C., Weiss, Sam A., McCarthy, Chris

“…Thousands of exoplanet detections have been made over the last 25 years using Doppler observations, transit photometry, direct imaging, and astrometry. Each of…”
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The Extreme Stellar-signals Project. III. Combining Solar Data from HARPS, HARPS-N, EXPRES, and NEID by Zhao, Lily L., Dumusque, Xavier, Ford, Eric B., Llama, Joe, Mortier, Annelies, Bedell, Megan, Al Moulla, Khaled, Bender, Chad F., Blake, Cullen H., Brewer, John M., Collier Cameron, Andrew, Cosentino, Rosario, Figueira, Pedro, Fischer, Debra A., Ghedina, Adriano, Gonzalez, Manuel, Halverson, Samuel, Kanodia, Shubham, Latham, David W., Lin, Andrea S. J., Lo Curto, Gaspare, Lodi, Marcello, Logsdon, Sarah E., Lovis, Christophe, Mahadevan, Suvrath, Monson, Andrew, Ninan, Joe P., Pepe, Francesco, Roettenbacher, Rachael M., Roy, Arpita, Santos, Nuno C., Schwab, Christian, Stefánsson, Guđmundur, Szymkowiak, Andrew E., Terrien, Ryan C., Udry, Stephane, Weiss, Sam A., Wildi, François, Wildi, Thibault, Wright, Jason T.

“…We present an analysis of Sun-as-a-star observations from four different high-resolution, stabilized spectrographs—HARPS, HARPS-N, EXPRES, and NEID. With…”
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Refining the Stellar Parameters of τ Ceti: a Pole-on Solar Analog by Korolik, Maria, Roettenbacher, Rachael M., Fischer, Debra A., Kane, Stephen R., Perkins, Jean M., Monnier, John D., Davies, Claire L., Kraus, Stefan, Le Bouquin, Jean-Baptiste, Anugu, Narsireddy, Gardner, Tyler, Lanthermann, Cyprien, Schaefer, Gail H., Setterholm, Benjamin, Brewer, John M., Llama, Joe, Zhao, Lily L., Szymkowiak, Andrew E., Henry, Gregory W.

“…To accurately characterize the planets a star may be hosting, stellar parameters must first be well determined. τ Ceti is a nearby solar analog and often a…”
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The Mass of the White Dwarf Companion in the Self-lensing Binary KOI-3278: Einstein versus Newton by Yahalomi, Daniel A., Shvartzvald, Yossi, Agol, Eric, Shporer, Avi, Latham, David W., Kruse, Ethan, Brewer, John M., Buchhave, Lars A., Fulton, Benjamin J., Howard, Andrew W., Isaacson, Howard, Petigura, Erik A., Quinn, Samuel N.

“…KOI-3278 is a self-lensing stellar binary consisting of a white dwarf secondary orbiting a Sun-like primary star. Kruse & Agol noticed small periodic…”
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Stellar Characterization of Keck HIRES Spectra with The Cannon by Rice, Malena, Brewer, John M.

“…To accurately interpret the observed properties of exoplanets, it is necessary to first obtain a detailed understanding of host star properties. However,…”
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Fluoride Inhibition of Enolase:  Crystal Structure and Thermodynamics by Qin, Jie, Chai, Geqing, Brewer, John M, Lovelace, Leslie L, Lebioda, Lukasz

“…Enolase is a dimeric metal-activated metalloenzyme which uses two magnesium ions per subunit:  the strongly bound conformational ion and the catalytic ion that…”
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Planet engulfment detections are rare according to observations and stellar modelling by Behmard, Aida, Dai, Fei, Brewer, John M, Berger, Travis A, Howard, Andrew W

“…ABSTRACT Dynamical evolution within planetary systems can cause planets to be engulfed by their host stars. Following engulfment, the stellar photosphere…”
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On Machine-learned Classification of Variable Stars with Sparse and Noisy Time-series Data by Richards, Joseph W, Starr, Dan L, Butler, Nathaniel R, Bloom, Joshua S, Brewer, John M, Crellin-Quick, Arien, Higgins, Justin, Kennedy, Rachel, Rischard, Maxime

“…With the coming data deluge from synoptic surveys, there is a need for frameworks that can quickly and automatically produce calibrated classification…”
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THE PHYSICAL PARAMETERS OF THE RETIRED A STAR HD 185351 by Johnson, John Asher, Huber, Daniel, Boyajian, Tabetha, Brewer, John M, White, Timothy R, von Braun, Kaspar, Maestro, Vicente, STELLO, DENNIS, Barclay, Thomas

“…We report here an analysis of the physical stellar parameters of the giant star HD 185351 using Kepler short-cadence photometry, optical and near infrared…”
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THE DYNAMICAL MASS AND THREE-DIMENSIONAL ORBIT OF HR7672B: A BENCHMARK BROWN DWARF WITH HIGH ECCENTRICITY by CREPP, Justin R, ASHER JOHNSON, John, HINKLEY, Sasha, CARPENTER, John M, BREWER, John M, FISCHER, Debra A, HOWARD, Andrew W, MARCY, Geoffrey W, WRIGHT, Jason T, ISAACSON, Howard, BOYAJIAN, Tabetha, VON BRAUN, Kaspar, HILLENBRAND, Lynne A

“…The companion to the G0V star HR7672 directly imaged by Liu et al. has moved measurably along its orbit since the discovery epoch, making it possible to…”
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Benchmarking Substellar Evolutionary Models Using New Age Estimates for HD 4747 B and HD 19467 B by Wood, Charlotte M., Boyajian, Tabetha, Braun, Kaspar von, Brewer, John M., Crepp, Justin R., Schaefer, Gail, Adams, Arthur, White, Timothy R.

“…Constraining substellar evolutionary models (SSEMs) is particularly difficult due to a degeneracy between the mass, age, and luminosity of a brown dwarf. In…”
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NEWLY DISCOVERED PLANETS ORBITING HD 5319, HD 11506, HD 75784 AND HD 10442 FROM THE N2K CONSORTIUM by Giguere, Matthew J, Fischer, Debra A, Payne, Matthew J, Brewer, John M, Johnson, John Asher, Howard, Andrew W, Isaacson, Howard T

“…Initially designed to discover short-period planets, the N2K campaign has since evolved to discover new worlds at large separations from their host stars…”
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Erratum: "C/O and Mg/Si Ratios of Stars in the Solar Neighborhood" (2016, ApJ, 831, 20) by Brewer, John M., Fischer, Debra A.

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EXPRES. III. Revealing the Stellar Activity Radial Velocity Signature of ϵ Eridani with Photometry and Interferometry by Roettenbacher, Rachael M., Cabot, Samuel H. C., Fischer, Debra A., Monnier, John D., Henry, Gregory W., Harmon, Robert O., Korhonen, Heidi, Brewer, John M., Llama, Joe, Petersburg, Ryan R., Zhao, Lily L., Kraus, Stefan, Le Bouquin, Jean-Baptiste, Anugu, Narsireddy, Davies, Claire L., Gardner, Tyler, Lanthermann, Cyprien, Schaefer, Gail, Setterholm, Benjamin, Clark, Catherine A., Jorstad, Svetlana G., Kuehn, Kyler, Levine, Stephen

“…The distortions of absorption line profiles caused by photospheric brightness variations on the surfaces of cool, main-sequence stars can mimic or overwhelm…”
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CHIRON TOOLS: Integrated Target Submission, Scheduling and Observing Systems for a High-Resolution Fiber-Fed Spectrograph by Brewer, John M., Giguere, Matthew, Fischer, Debra A.

“…The CHIRON spectrometer is a new high-resolution, fiber-fed instrument on the 1.5 m telescope at Cerro Tololo Inter-America Observatory (CTIO). To optimize use…”
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ACCURATE GRAVITIES OF F, G, AND K STARS FROM HIGH RESOLUTION SPECTRA WITHOUT EXTERNAL CONSTRAINTS by Brewer, John M., Fischer, Debra A., Basu, Sarbani, Valenti, Jeff A., Piskunov, Nikolai

“…ABSTRACT We demonstrate a new procedure to derive accurate and precise surface gravities from high resolution spectra without the use of external constraints…”
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Mechanism of Enolase:  The Crystal Structure of Asymmetric Dimer Enolase−2-Phospho-d-glycerate/Enolase−Phosphoenolpyruvate at 2.0 Å Resolution by Zhang, Erli, Brewer, John M, Minor, Wladek, Carreira, Lionel A, Lebioda, Lukasz

“…Enolase, a glycolytic enzyme that catalyzes the dehydration of 2-phospho-d-glycerate (PGA) to form phosphoenolpyruvate (PEP), is a homodimer in all eukaryotes…”
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