Sökresultat - Samuel Halverson

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  1. 1

    The Epoch of Giant Planet Migration Planet Search Program. III. The Occurrence Rate of Young Giant Planets inside the Water Ice Line av Quang H. Tran, Brendan P. Bowler, William D. Cochran, Chad F. Bender, Samuel Halverson, Suvrath Mahadevan, Joe P. Ninan, Paul Robertson, Arpita Roy, Guðmundur Stefánsson, Ryan C. Terrien

    Publicerad 2025-01-01

    We present statistical results from the Epoch of Giant Planet Migration RV planet search program. This survey was designed to measure the occurrence rate of giant planets interior to the water ice line of young Sun-like stars, compare this to the prevalence of giant planets at older ages, and provid...

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  2. 2

    Stellar Obliquity of the Ultra-short-period Planet System HD 93963 av Huan-Yu Teng, Fei Dai, Andrew W. Howard, Samuel Halverson, Howard Isaacson, Eiichiro Kokubo, Ryan A. Rubenzahl, Benjamin Fulton, Aaron Householder, Jack Lubin, Steven Giacalone, Luke Handley, Judah Van Zandt, Erik A. Petigura, J. M. Joel Ong, Pranav Premnath, Haochuan Yu, Steven R. Gibson, Kodi Rider, Arpita Roy, Ashley Baker, Jerry Edelstein, Chris Smith, Josh Walawender, Byeong-Cheol Lee, Yu-Juan Liu, Joshua N. Winn

    Publicerad 2025-01-01

    We report an observation of the Rossiter–McLaughlin (RM) effect of the transiting planet HD 93963 Ac, a mini-Neptune planet orbiting a G0-type star with an orbital period of P _c  = 3.65 days, accompanied by an inner super-Earth planet with P _b  = 1.04 days. We observed a full transit of planet c o...

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  3. 3

    Time-resolved p-mode Oscillations for Subgiant HD 142091 with NEID at WIYN av Jacob K. Luhn, Paul Robertson, Samuel Halverson, Arvind F. Gupta, Jared C. Siegel, Jason T. Wright, Eric B. Ford, Suvrath Mahadevan, Timothy R. Bedding, Jaime A. Alvarado-Montes, Chad F. Bender, Jiayin Dong, Fred Hearty, Sarah E. Logsdon, Andrew Monson, Michael W. McElwain, Joe P. Ninan, Jayadev Rajagopal, Arpita Roy, Christian Schwab, Gudmundur Stefansson, Daniel J. Stevens, Ryan C. Terrien, Sharon Xuesong Wang, Jinglin Zhao

    Publicerad 2025-01-01

    Detections of Earth-analog planets in radial velocity (RV) observations are limited by stellar astrophysical variability occurring on a variety of timescales. Current state-of-the-art methods to disentangle potential planet signals from intrinsic stellar signals assume that stellar signals introduce...

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  4. 4

    The NEID Earth Twin Survey. II. Dynamical Masses in Seven High-acceleration Star Systems av Mark R. Giovinazzi, Cullen H. Blake, Paul Robertson, Andrea S. J. Lin, Arvind F. Gupta, Suvrath Mahadevan, Jason T. Wright, Daniella Bardalez Gagliuffi, Jiayin Dong, Rachel B. Fernandes, Evan Fitzmaurice, Samuel Halverson, Shubham Kanodia, Sarah E. Logsdon, Jacob K. Luhn, Michael W. McElwain, Andy Monson, Joe P. Ninan, Jayadev Rajagopal, Arpita Roy, Christian Schwab, Gudmundur Stefánsson, Ryan Terrien, Jason D. Eastman, Jonathan Horner, Peter Plavchan, Sharon X. Wang, Maurice L. Wilson, Robert A. Wittenmyer

    Publicerad 2025-01-01

    We present a set of companion dynamical masses and orbital parameters of seven star systems from the NEID Earth Twin Survey with significant absolute astrometric accelerations between the epochs of Hipparcos and Gaia. These include four binary star systems (HD 68017 AB, 61 Cygni AB, HD 24496 AB, and...

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