16 citations · 29 across the 8 of their papers we have counts for
11 papers
The NEID Earth Twin Survey. VI. Discovery of a Low-Mass Planet Orbiting HD 126053 and RV Signals Near the Rotation Periods of HD 168009 and HD 10780
Arvind F. Gupta, Sarah E. Logsdon, Jacob K. Luhn +19
Extreme precision radial velocity (EPRV) spectrographs are making strides in extending the limits of radial velocity exoplanet detection. Perhaps the best evidence for this is how…
Predicting Macroturbulence in F/G/K Dwarfs to 100 m/s Precision
Jack Lubin, Erik Petigura, Kento Masuda +6
We leverage the high resolution and spectral stability of the Keck Planet Finder (KPF) spectrograph to investigate macroturbulence broadening via the stellar cross-correlation func…
Improving the Precision of Line-by-Line Radial Velocities: A Data-Driven Iterative Algorithm for Spectral Line Selection
Kanishk Pandey, Eric A. Ford, Joseph M. Salzer +17
Independent analysis of individual spectral lines, or line-by-line (LBL) analyses, can improve upon standard cross-correlation function (CCF) methods for measuring radial velocitie…
Synthetic disk-integrated absorption lines isolating stellar granulation for high-precision RV studies
Ginger Frame, Heather Cegla, Cis Lagae +6
We present a novel method for constructing high-accuracy, time-varying disk-integrated stellar absorption line profiles that isolate the effects of granulation alone. This framewor…
The Limits of Line Broadening: Modeling Stellar Spectra and Formation Temperatures at High Resolution
Michael L. Palumbo
The modeling of stellar spectra is pervasive in astronomy. Conventionally, the shapes of absorption lines are modeled by convolving thermal profiles (computed given some model stel…
Earths within Reach: Evaluation of Strategies for Mitigating Solar Variability using 3.5 years of NEID Sun-as-a-Star Observations
Eric B. Ford, Chad F. Bender, Cullen H. Blake +15
We present the results of Sun-as-a-star observations by the NEID Solar Telescope at WIYN Observatory, spanning January 1, 2021 through June 30, 2024. We identify 117,060 observatio…
Identification and Quenching of Nugget Galaxies in the RESOLVE Survey at z = 0
Derrick S. Carr, Sheila J. Kannappan, Mark A. Norris +7
We present a complete census of candidate nuggets, i.e., dense galaxies likely formed by compaction with intense gas influx, within the volume-limited REsolved Spectrosc…
GRASS II: Simulations of Potential Granulation Noise Mitigation Methods
Michael L. Palumbo, Eric B. Ford, Elizabeth B. Gonzalez +3
We present an updated version of GRASS (the GRanulation And Spectrum Simulator, Palumbo et al. 2022) which now uses an expanded library of 22 solar lines to empirically model time-…
Characterizing Solar Center-to-Limb Radial-Velocity Variability with SDO
Michael L. Palumbo, Steven H. Saar, Raphaëlle D. Haywood
Stellar photospheric inhomogeneities are a significant source of noise which currently precludes the discovery of Earth-mass planets orbiting Sun-like stars with the radial-velocit…
A Search for Radio Technosignatures at the Solar Gravitational Lens Targeting Alpha Centauri
Nick Tusay, Macy J. Huston, Cayla M. Dedrick +17
Stars provide an enormous gain for interstellar communications at their gravitational focus, perhaps as part of an interstellar network. If the Sun is part of such a network, there…
: Distinguishing Planet-induced Doppler Signatures from Granulation with a Synthetic Spectra Generator
Michael L. Palumbo, Eric B. Ford, Jason T. Wright +3
Owing to recent advances in radial-velocity instrumentation and observation techniques, the detection of Earth-mass planets around Sun-like stars may soon be primarily limited by i…