GS
Gudmundur Stefansson
astro-ph.EPastro-ph.SRastro-ph.IMastro-ph.GAastro-ph.HEastro-ph.COExoplanet detection methods (489)Fabry-Perot interferometers (524)Near infrared astronomy (1093)physics.optics
On Valency
published · living versionsW_8epvx92t·v1 · currentpublished
A Headwind-like Helium Outflow from TOI-3884b
with Joe P. Ninan, Jessica Libby-Roberts, Suvrath Mahadevan, Oleg Kochukhov +17
1 version
Preprints & journals
173 papers in the corpus · 2016–2026The 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 107802609.32097v1 · Arvind F. Gupta, Sarah E. Logsdon, Jacob K. Luhn et al.2026 · 0 citationsarXiv
Does HD 3167 Have Planets with Perpendicular Orbits?2609.19277v1 · Joshua N. Winn, Jack Lubin, Gu\dhmundur Stef'ansson et al.2026 · 0 citationsarXiv
Radial velocity follow-up of \textit{Gaia} astrometric substellar companions: six confirmed brown dwarfs and 13 impostor binaries2609.08590v1 · Marcus L. Marcussen, Simon H. Albrecht, Kamil K. Kalinowski et al.2026 · 0 citationsarXiv
POSEIDON III: The Aligned Orbit of the Hot Neptune Around the Hot Star WASP-1952609.02888v2 · Juan I. Espinoza-Retamal, Joshua N. Winn, Rafael Brahm et al.2026 · 0 citationsarXiv
Discovery and Characterization of the TOI-4468 Planetary System: A Transiting Hot Jupiter With a Lone Nearby Outer Companion2608.25208v1 · Joseph R. Livesey, Benjamin J. Hord, Juliette Becker et al.2026 · 0 citationsarXiv
GEMS JWST: Hold on to your HATS(-6 b), a sub-solar metallicity giant planet with water, methane and ammonia in its atmosphere2608.16990v1 · Giannina Guzm'an Caloca, Caleb I. Canas, Nicole L. Wallack et al.2026 · 0 citationsarXiv
slicersim: A python package to simulate image slicer spectroscopic observations -- application to the Lazuli Spectrograph2607.06391v1 · M. Rigault, Y. Copin, G. Aldering et al.2026 · 0 citationsarXiv
Improving the Precision of Line-by-Line Radial Velocities: A Data-Driven Iterative Algorithm for Spectral Line Selection2606.29552v1 · Kanishk Pandey, Eric A. Ford, Joseph M. Salzer et al.2026 · 0 citationsarXiv
Revisiting the Exo-Mercury Candidate GJ 367 b with ESPRESSO and a Self-Consistent Tidal Distortion Model2606.18355v1 · Rena A. Lee, Fei Dai, Ellen M. Price et al.2026 · 0 citationsarXiv
The Lazuli Space Observatory: Opportunities for time-domain and multi-messenger astronomy2606.17136v1 · T. Wevers, T.J. Maccarone, A. Palmese et al.2026 · 0 citationsarXiv
The Neptunian ridge planet WASP-156 b does not have a polar orbit2605.27291v2 · M. Lafarga, J. I. Espinoza-Retamal, H. M. Cegla et al.2026 · 0 citationsMonthly Notices of the Royal Astronomical Society, Volume 551, Issue 2, September 2026, stag996
A Revised Mass and Period for the Habitable Zone super-Earth GJ 3378b: A Planet Straddling the Cosmic Shoreline2605.16499v1 · Paul Robertson, Michael Endl, William D. Cochran et al.2026 · 0 citationsarXiv
Searching for GEMS: Three warm Saturns and a super-Jupiter orbiting four early M-dwarfs2604.27064v2 · Pranav H. Premnath, Paul Robertson, Shubham Kanodia et al.2026 · 0 citationsPranav H. Premnath et al 2026 AJ 172 92
POSEIDON II: The Anti-Aligned Orbit of the Warm Neptune TOI-1710 A b2604.03364v2 · Juan I. Espinoza-Retamal, Hareesh Bhaskar, Joshua N. Winn et al.2026 · 0 citationsApJL 1005 L15 (2026)
GEMS JWST: A sub-Solar metallicity atmosphere for giant planet TOI-5293Ab orbiting a rapidly changing M-dwarf2603.16464v1 · Shubham Kanodia, Caleb I. Canas, Jacob Lustig-Yaeger et al.2026 · 0 citationsarXiv
POSEIDON I: The Dynamical Origins of Transiting Neptunes2602.18553v2 · Juan I. Espinoza-Retamal, Joshua N. Winn, Rafael Brahm et al.2026 · 1 citationarXiv
Stellar and orbital characterization of three low mass M dwarf binary stars with dynamical spectroscopy from the Habitable Zone Planet Finder2601.19996v1 · Suhani Surana, Chad F. Bender, Caleb I. Canas et al.2026 · 0 citationsarXiv
The Lazuli Space Observatory: Architecture & Capabilities2601.02556v2 · Arpita Roy, Stuart Feldman, Pete Klupar et al.2026 · 1 citationarXiv
A young progenitor for the most common planetary systems in the Galaxy.41501195 · Livingston, John H, Petigura, Erik A, David, Trevor J et al.2026 · 13 citationsNature. 2026;649(8096):310-314
Hipparcos, Gaia, and RVs reveal that the radio emitting F star HD 220242 has an M dwarf companion, a likely source of the radio emission2512.10072v1 · Megan Delamer (1, Gu\dhmundur Stef'ansson, Suvrath Mahadevan (1 et al.2025 · 0 citationsarXiv
Searching for Exoplanets Born Outside the Milky Way: VOYAGERS Survey Design2511.07632v1 · Robert Aloisi, Andrew Vanderburg, Melinda Soares-Furtado et al.2025 · 1 citationarXiv
Discovery of a Nearby Habitable Zone Super-Earth Candidate Amenable to Direct Imaging2510.19956v1 · Corey Beard, Paul Robertson, Jack Lubin et al.2025 · 2 citationsarXiv
Searching for GEMS: TOI-5916 b & TOI-6158 b are two Saturn-density planets orbiting M2 dwarfs2510.11798v1 · Shane O'Brien, Amber Wong, Te Han et al.2025 · 0 citationsAJ 172 117 (2026)
Orbital decay candidates reconsidered: WASP-4 b is not decaying and Kepler-1658 b is not a planet2510.05229v4 · Joshua N. Winn, Gu\dhmundur Stef'ansson2025 · 9 citationsarXiv
A Cold and Super-Puffy Planet on a Prograde Orbit2510.00102v3 · Juan I. Espinoza-Retamal, Rafael Brahm, Cristobal Petrovich et al.2025 · 2 citationsarXiv
Searching for GEMS: TOI-5349b is a Saturn-like planet orbiting a metal-rich early M-dwarf2509.19492v1 · Angeli Sandoval, Caleb I. Canas, Shubham Kanodia et al.2025 · 3 citationsarXiv
The Polar Orbit of TOI-2374 b, a Planet in the Neptunian Ridge2509.11565v1 · Samuel W. Yee, Patrick Tamburo, Gudmundur Stef'ansson et al.2025 · 6 citationsarXiv
Searching for GEMS: The Occurrence of Giant Planets orbiting M-dwarfs within 100 pc2509.08773v3 · Rowen I. Glusman, Caleb I. Canas, Shubham Kanodia et al.2025 · 9 citationsarXiv
The NEID Earth Twin Survey. IV. Confirming an 89 d, Planet Orbiting a Nearby Sun-like Star2508.18169v2 · Mark R. Giovinazzi, Evan Fitzmaurice, Arvind F. Gupta et al.2025 · 0 citationsarXiv
Spectroscopic Characterization of LOFAR Radio-emitting M dwarfs2507.13783v1 · E. Koo, G. Stefansson, R. D. Kavanagh et al.2025 · 0 citationsarXiv
An Earth-Sized Planet in a 5.4h Orbit Around a Nearby K dwarf2507.08464v1 · Kaya Han Tas, Gudmundur Stefansson, Syarief N.M. Fariz et al.2025 · 2 citationsarXiv
TOI-1259Ab: A Warm Jupiter Orbiting a K-dwarf White-Dwarf Binary is on a Well-aligned Orbit2507.07737v1 · Hugo Veldhuis, Juan I. Espinoza-Retamal, Gudmundur Stefansson et al.2025 · 1 citationA&A 708, A272 (2026)
The NEID Earth Twin Survey. III. Survey Performance After Three Years on Sky2506.23704v2 · Arvind F. Gupta, Evan Fitzmaurice, Suvrath Mahadevan et al.2025 · 6 citationsarXiv
Time-resolved p-mode oscillations for subgiant HD 142091 with NEID at WIYN2506.18989v1 · Jacob K. Luhn, Paul Robertson, Samuel Halverson et al.2025 · 1 citationarXiv
Searching for GEMS: TOI-7149~b an Inflated Giant Planet causing a 12% Transit of a Fully Convective M-dwarf2506.17861v2 · Shubham Kanodia, Caleb I. Canas, Suvrath Mahadevan et al.2025 · 6 citationsarXiv
The Epoch of Giant Planet Migration Planet Search Program. III. The Occurrence Rate of Young Giant Planets Inside the Water Ice Line2506.08078v1 · Quang H. Tran, Brendan P. Bowler, William D. Cochran et al.2025 · 3 citationsarXiv
The NEID Earth Twin Survey. II. Dynamical Masses in Seven High-acceleration Star Systems2505.12563v1 · Mark R. Giovinazzi, Cullen H. Blake, Paul Robertson et al.2025 · 7 citationsarXiv
Searching for GEMS: Confirmation of TOI-5573b, a Cool, Saturn-like Planet Orbiting An M-dwarf2505.08947v1 · Rachel B Fernandes, Shubham Kanodia, Megan Delamer et al.2025 · 3 citationsarXiv
The True Stellar Obliquity of a Sub-Saturn Planet from the Tierras Observatory and KPF2505.03628v1 · Patrick Tamburo, Samuel W. Yee, Juliana Garc'ia-Mej'ia et al.2025 · 0 citationsarXiv
A Revised Density Estimate for the Largest Known Exoplanet, HAT-P-67 b2504.13997v2 · Gavin Wang, William O. Balmer, Laurent Pueyo et al.2025 · 1 citationarXiv
NEIDSpecMatch: stellar parameter estimation with NEID spectra using an empirical library2503.16729v1 · Te Han, Paul Robertson, Caleb I. Canas et al.2025 · 1 citationarXiv
Four sub-Earth planets orbiting Barnard's Star from MAROON-X and ESPRESSO2503.08095v1 · Ritvik Basant, Rafael Luque, Jacob L. Bean et al.2025 · 13 citationsarXiv
The Super-Puff WASP-193b is On A Well-Aligned Orbit2502.17610v1 · Samuel W. Yee, Gudmundur Stefansson, Daniel Thorngren et al.2025 · 5 citationsarXiv
TOI-6324b: An Earth-Mass Ultra-Short-Period Planet Transiting a Nearby M Dwarf2502.16087v3 · Rena A. Lee, Fei Dai, Andrew W. Howard et al.2025 · 3 citationsarXiv
Calibrating the Instrumental Drift in MAROON-X using an Ensemble Analysis2502.15074v2 · Ritvik Basant, Tanya Das, Jacob L. Bean et al.2025 · 6 citationsarXiv
GEMS JWST: Transmission spectroscopy of TOI-5205b reveals significant stellar contamination and a metal-poor atmosphere2502.06966v3 · Caleb I. Canas, Jacob Lustig-Yaeger, Shang-Min Tsai et al.2025 · 7 citationsarXiv
TOI-2015b: a sub-Neptune in strong gravitational interaction with an outer non-transiting planet2502.07074v1 · K. Barkaoui, J. Korth, E. Gaidos et al.2025 · 0 citationsarXiv
Searching for GEMS: Discovery and Characterization of Two Brown Dwarfs Around M Dwarfs2501.16554v1 · Alexander Larsen, Tera N. Swaby, Henry A. Kobulnicky et al.2025 · 5 citationsarXiv
Jitter Across 15 Years: Leveraging Precise Photometry from Kepler and TESS to Extract Exoplanets from Radial Velocity Time Series2412.11329v1 · Corey Beard, Paul Robertson, Jack Lubin et al.2024 · 0 citationsarXiv
The Spin-Orbit Alignment of 8 Warm Gas Giant Systems2412.08692v2 · Juan I. Espinoza-Retamal, Andr'es Jord'an, Rafael Brahm et al.2024 · 16 citationsAJ 170 70 (2025)
Career total: at least 337 works. 173 are in this corpus.Showing the 50 most recent.
Profile built from the corpus for this byline.
Author records are still filling in while the Hub is in alpha. If this is your page, you'll be able to claim it soon. Spot a mistake? Tell us.