Search Results - "Henry, Todd J."

The Solar Neighborhood LI: A Variability Survey of Nearby M Dwarfs with Planets from Months to Decades with TESS and the CTIO/SMARTS 0.9 m Telescope by Kar, Aman, Henry, Todd J., Couperus, Andrew A., Vrijmoet, Eliot Halley, Jao, Wei-Chun

“…Abstract We present the optical photometric variability of 32 planet-hosting M dwarfs within 25 pc over timescales of months to decades. The primary goal of…”
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Mind the Gap. I. Hα Activity of M Dwarfs Near the Partially/Fully Convective Boundary and a New Hα Emission Deficiency Zone on the Main Sequence by Jao, Wei-Chun, Henry, Todd J., White, Russel J., Nisak, Azmain H., Hubbard-James, Hodari-Sadiki, Paredes, Leonardo A., Lewis, Vanders B.

“…Abstract Since identifying the gap in the H-R Diagram (HRD) marking the transition between partially and fully-convective interiors, a unique type of slowly…”
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A 7 Day Multiwavelength Flare Campaign on AU Mic. I. High-time-resolution Light Curves and the Thermal Empirical Neupert Effect by Tristan, Isaiah I., Notsu, Yuta, Kowalski, Adam F., Brown, Alexander, Wisniewski, John P., Osten, Rachel A., Vrijmoet, Eliot H., White, Graeme L., Carter, Brad D., Grady, Carol A., Henry, Todd J., Hinojosa, Rodrigo H., Lomax, Jamie R., Neff, James E., Paredes, Leonardo A., Soutter, Jack

“…Abstract We present light curves and flares from a 7 day, multiwavelength observational campaign of AU Mic, a young and active dM1e star with exoplanets and a…”
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Observations with the Differential Speckle Survey Instrument. XI. First Year of Observations from Apache Point Observatory by Davidson, James W., Horch, Elliott P., Majewski, Steven R., Fagan, Evan, Shea, Melissa A., Sutherland, Torrie, Wilson, Robert F., Lesley, D. Xavier, Pellegrino, Richard A., Leonard, Jonathan P., Wilson, John C., Chanover, Nancy J., Dow, Peter, Henry, Todd J., Ketzeback, William, McDonald, Devin, McMillan, Russet, Dembicky, Jack, DeColibus, Riley A., Gray, Candace, Townsend, Amanda

“…Abstract The Differential Speckle Survey Instrument (DSSI) was relocated to the Astrophysical Research Consortium 3.5 m telescope at Apache Point Observatory…”
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A HIGH-PRECISION NEAR-INFRARED SURVEY FOR RADIAL VELOCITY VARIABLE LOW-MASS STARS USING CSHELL AND A METHANE GAS CELL by Gagné, Jonathan, Plavchan, Peter, Gao, Peter, Anglada-Escude, Guillem, Furlan, Elise, Davison, Cassy, Tanner, Angelle, Henry, Todd J., Riedel, Adric R., Brinkworth, Carolyn, Latham, David, Bottom, Michael, White, Russel, Mills, Sean, Beichman, Chas, Johnson, John A., Ciardi, David R., Wallace, Kent, Mennesson, Bertrand, von Braun, Kaspar, Vasisht, Gautam, Prato, Lisa, Kane, Stephen R., Mamajek, Eric E., Walp, Bernie, Crawford, Timothy J., Rougeot, Raphaël, Geneser, Claire S., Catanzarite, Joseph

“…ABSTRACT We present the results of a precise near-infrared (NIR) radial velocity (RV) survey of 32 low-mass stars with spectral types K2-M4 using CSHELL at the…”
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The Character of M Dwarfs by Henry, Todd J, Jao, Wei-Chun

“…M dwarfs dominate the stellar population, accounting for three of every four stars, the nearest of which is Proxima Centauri, the closest destination beyond…”
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Dynamical Masses of ε Indi B and C: Two Massive Brown Dwarfs at the Edge of the Stellar–substellar Boundary by Dieterich, Sergio B., Weinberger, Alycia J., Boss, Alan P., Henry, Todd J., Jao, Wei-Chun, Gagné, Jonathan, Astraatmadja, Tri L., Thompson, Maggie A., Anglada-Escudé, Guillem

“…Abstract We report individual dynamical masses for the brown dwarfs ε Indi B and C, which have spectral types of T1.5 and T6, respectively, measured from…”
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The Solar Neighborhood. XLIX. New Discoveries and Orbits of M-dwarf Multiples with Speckle Interferometry at SOAR by Vrijmoet, Eliot Halley, Tokovinin, Andrei, Henry, Todd J., Winters, Jennifer G., Horch, Elliott, Jao, Wei-Chun

“…Abstract We present the first results of a multiyear program to map the orbits of M-dwarf multiples within 25 pc. The observations were conducted primarily…”
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Young Stars with SALT by Riedel, Adric R., Alam, Munazza K., Rice, Emily L., Cruz, Kelle L., Henry, Todd J.

“…Abstract We present a spectroscopic and kinematic analysis of 79 nearby M dwarfs in 77 systems. All of these dwarfs are low-proper-motion southern hemisphere…”
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Estimating the Convective Turnover Time by Jao, Wei-Chun, Couperus, Andrew A., Vrijmoet, Eliot H., Wright, Nicholas J, Henry, Todd J.

“…Abstract The introduction of the Rossby number (R 0 ), which incorporates the convective turnover time ( τ ), in 1984 was a pioneering idea for understanding…”
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The CRIRES Search for Planets Around the Lowest-mass Stars. I. High-precision Near-infrared Radial Velocities with an Ammonia Gas Cell by Bean, Jacob L, Seifahrt, Andreas, Hartman, Henrik, Nilsson, Hampus, Wiedemann, Günter, Reiners, Ansgar, Dreizler, Stefan, Henry, Todd J

“…Radial velocities measured from near-infrared (NIR) spectra are a potentially powerful tool to search for planets around cool stars and sub-stellar objects…”
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The Optical Mass-Luminosity Relation at the End of the Main Sequence (0.08-0.20 M) by Henry, Todd J, Franz, Otto G, Wasserman, Lawrence H, Benedict, G. Fritz, Shelus, Peter J, Ianna, Philip A, Kirkpatrick, J. Davy, McCarthy, Jr., Donald W

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An Adaptive Optics Census of Companions to Northern Stars Within 25 pc with Robo-AO by Salama, Maïssa, Ziegler, Carl, Baranec, Christoph, Liu, Michael C., Law, Nicholas M., Riddle, Reed, Henry, Todd J., Winters, Jennifer G., Jao, Wei-Chun, Ou, James, Ruiz, Arcelia Hermosillo

“…Abstract In order to assess the multiplicity statistics of stars across spectral types and populations in a volume-limited sample, we censused nearby stars for…”
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The Solar Neighborhood L: Spectroscopic Discovery of K Dwarfs Younger Than 1 Gyr and New Binaries within 30 pc by Hubbard-James, Hodari-Sadiki, Lesley, D. Xavier, Henry, Todd J., Paredes, Leonardo A., Nisak, Azmain H.

“…Abstract As part of a comprehensive effort to characterize the nearest stars, the CHIRON echelle spectrograph on the CTIO/SMARTS 1.5 m telescope is being used…”
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TESS Spots a Hot Jupiter with an Inner Transiting Neptune by Huang, Chelsea X., Quinn, Samuel N., Vanderburg, Andrew, Becker, Juliette, Rodriguez, Joseph E., Pozuelos Romero, Francisco José, Gandolfi, Davide, Zhou, George, Mann, Andrew W., Collins, Karen A., Crossfield, Ian, Barkaoui, Khalid, Collins, Kevin I., Fridlund, Malcolm, Gillon, Michaël, Gonzales, Erica J., Günther, Maximilian N., Henry, Todd J., Howell, Steve B., James, Hodari-Sadiki, Jao, Wei-Chun, Jehin, Emmanuel, Jensen, Eric L. N., Kane, Stephen R., Lissauer, Jack J., Matthews, Elisabeth, Matson, Rachel A., Paredes, Leonardo A., Schlieder, Joshua E., Stassun, Keivan G., Shporer, Avi, Sha, Lizhou, Tan, Thiam-Guan, Georgieva, Iskra, Mathur, Savita, Palle, Enric, Persson, Carina M., Eylen, Vincent Van, Ricker, George R., Vanderspek, Roland K., Latham, David W., Winn, Joshua N., Seager, S., Jenkins, Jon M., Burke, Christopher J., Goeke, Robert F., Rinehart, Stephen, Rose, Mark E., Ting, Eric B., Torres, Guillermo, Wong, Ian

“…Hot Jupiters are rarely accompanied by other planets within a factor of a few in orbital distance. Previously, only two such systems have been found. Here, we…”
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Mapping out the Stellar Populations of IC 2602 and IC 2391 by Nisak, Azmain H., White, Russel J., Yep, Alexandra, Henry, Todd J., Paredes, Leonardo, James, Hodari-Sadiki, Jao, Wei-Chun

“…Abstract IC 2391 and IC 2602 are important benchmarks for testing early star and planet evolution theories, both structural and dynamical, because they are the…”
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Visual Orbits of Spectroscopic Binaries with the CHARA Array. IV. HD 61859, HD 89822, HD 109510, and HD 191692 by Lester, Kathryn V., Schaefer, Gail H., Fekel, Francis C., Gies, Douglas R., Henry, Todd J., Jao, Wei-Chun, Paredes, Leonardo A., Hubbard-James, Hodari-Sadiki, Farrington, Christopher D., Gordon, Kathryn D., Chojnowski, S. Drew, Monnier, John D., Kraus, Stefan, Bouquin, Jean-Baptiste Le, Anugu, Narsireddy, Brummelaar, Theo Ten, Davies, Claire L., Gardner, Tyler, Labdon, Aaron, Lanthermann, Cyprien, Setterholm, Benjamin R.

“…Abstract We present the visual orbits of four spectroscopic binary stars, HD 61859, HD 89822, HD 109510, and HD 191692, using long baseline interferometry with…”
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Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems by Raghavan, Deepak, Henry, Todd J, Mason, Brian D, Subasavage, John P, Jao, Wei-Chun, Beaulieu, Thom D, Hambly, Nigel C

“…We present results of a reconnaissance for stellar companions to all 131 radial velocity-detected candidate extrasolar planetary systems known as of 2005 July…”
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Spitzer IRAC Photometry of M, L, and T Dwarfs by Patten, Brian M, Stauffer, John R, Burrows, Adam, Marengo, Massimo, Hora, Joseph L, Luhman, Kevin L, Sonnett, Sarah M, Henry, Todd J, Raghavan, Deepak, Megeath, S. Thomas, Liebert, James, Fazio, Giovanni G

“…We present the results of a program to acquire photometry for 86 late M, L, and T dwarfs using the Infrared Array Camera (IRAC) on the Spitzer Space Telescope…”
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Photometric colors of the brightest members of the Jupiter L5 Trojan cloud by Chatelain, Joseph P., Henry, Todd J., French, Linda M., Winters, Jennifer G., Trilling, David E.

“…•We present photometric color observations for the 42 largest L5 Jupiter Trojans.•We calculate a color principal component for separating DLike and XLike…”
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