Guðmundur Kári Stefánsson
Guðmundur Kári Stefánsson
NASA Sagan Fellow, Princeton University
Verified email at - Homepage
Cited by
Cited by
The Habitable-zone Planet Finder: A status update on the development of a stabilized fiber-fed near-infrared spectrograph for the for the Hobby-Eberly telescope
S Mahadevan, LW Ramsey, R Terrien, S Halverson, A Roy, F Hearty, ...
Ground-based and airborne instrumentation for astronomy v 9147, 543-552, 2014
A comprehensive radial velocity error budget for next generation Doppler spectrometers
S Halverson, R Terrien, S Mahadevan, A Roy, C Bender, GK Stefánsson, ...
Ground-based and Airborne Instrumentation for Astronomy VI 9908, 2022-2041, 2016
Toward space-like photometric precision from the ground with beam-shaping diffusers
G Stefansson, S Mahadevan, L Hebb, J Wisniewski, J Huehnerhoff, ...
The Astrophysical Journal 848 (1), 9, 2017
A versatile technique to enable sub-milli-kelvin instrument stability for precise radial velocity measurements: tests with the habitable-zone planet finder
G Stefansson, F Hearty, P Robertson, S Mahadevan, T Anderson, E Levi, ...
The Astrophysical Journal 833 (2), 175, 2016
Evidence for He I 10830 Å Absorption during the Transit of a Warm Neptune around the M-dwarf GJ 3470 with the Habitable-zone Planet Finder
JP Ninan, G Stefansson, S Mahadevan, C Bender, P Robertson, ...
The Astrophysical Journal 894 (2), 97, 2020
Mass–Radius Relationship for M Dwarf Exoplanets: Comparing Nonparametric and Parametric Methods
S Kanodia, A Wolfgang, GK Stefansson, B Ning, S Mahadevan
The Astrophysical Journal 882 (1), 38, 2019
Arpita Roy, Christian Schwab, Steinn Sigurdsson, Ryan Terrien, and Jason T. Wright. A Sub-Neptune-sized Planet Transiting the M2. 5 Dwarf G 9-40: Validation with the Habitable …
G Stefansson, C Canas, J Wisniewski, P Robertson, S Mahadevan, ...
Astron. J 159 (3), 100, 2020
The Habitable-Zone Planet Finder: improved flux image generation algorithms for H2RG up-the-ramp data
JP Ninan, CF Bender, S Mahadevan, EB Ford, AJ Monson, KF Kaplan, ...
High Energy, Optical, and Infrared Detectors for Astronomy VIII 10709, 694-704, 2018
On-sky commissioning of MAROON-X: a new precision radial velocity spectrograph for Gemini North
A Seifahrt, JL Bean, J Stürmer, D Kasper, L Gers, C Schwab, ...
Ground-based and Airborne Instrumentation for Astronomy VIII 11447, 305-325, 2020
The habitable zone planet finder reveals a high mass and low obliquity for the young neptune k2-25b
G Stefansson, S Mahadevan, M Maney, JP Ninan, P Robertson, ...
The Astronomical Journal 160 (4), 192, 2020
Diffuser-assisted Photometric Follow-up Observations of the Neptune-sized Planets K2-28b and K2-100b
G Stefansson, Y Li, S Mahadevan, J Wisniewski, L Hebb, B Morris, ...
The Astronomical Journal 156 (6), 266, 2018
First light of engineered diffusers at the Nordic Optical Telescope reveal time variability of the optical eclipse depth of WASP-12b
C Von Essen, G Stefansson, M Mallonn, T Pursimo, AA Djupvik, ...
Astronomy & Astrophysics 628, A115, 2019
Overview of the spectrometer optical fiber feed for the habitable-zone planet finder
S Kanodia, S Mahadevan, LW Ramsey, GK Stefansson, AJ Monson, ...
Ground-based and Airborne Instrumentation for Astronomy VII 10702, 2057-2074, 2018
Ultrastable environment control for the NEID spectrometer: design and performance demonstration
P Robertson, T Anderson, G Stefansson, FR Hearty, A Monson, ...
Journal of Astronomical Telescopes, Instruments, and Systems 5 (1), 015003 …, 2019
A Warm Jupiter Transiting an M Dwarf: A TESS Single-transit Event Confirmed with the Habitable-zone Planet Finder
CI Cañas, G Stefansson, S Kanodia, S Mahadevan, WD Cochran, M Endl, ...
The Astronomical Journal 160 (3), 147, 2020
TOI-1728b: The Habitable-zone Planet Finder Confirms a Warm Super-Neptune Orbiting an M-dwarf Host
S Kanodia, CI Cañas, G Stefansson, JP Ninan, L Hebb, ASJ Lin, H Baran, ...
The Astrophysical Journal 899 (1), 29, 2020
It takes two planets in resonance to tango around K2-146
KWF Lam, J Korth, K Masuda, S Csizmadia, P Eigmüller, GK Stefánsson, ...
The Astronomical Journal 159 (3), 120, 2020
Propagation loss of long-range surface plasmon polariton gold stripe waveguides in the thin-film limit
I Slovinsky, GK Stefansson, A Kossoy, K Leosson
Plasmonics 8, 1613-1619, 2013
Nondetection of Helium in the Upper Atmospheres of TRAPPIST-1b, e, and f
V Krishnamurthy, T Hirano, G Stefánsson, JP Ninan, S Mahadevan, ...
The Astronomical Journal 162 (3), 82, 2021
Stellar Activity Manifesting at a One-year Alias Explains Barnard b as a False Positive
J Lubin, P Robertson, G Stefansson, J Ninan, S Mahadevan, M Endl, ...
The Astronomical Journal 162 (2), 61, 2021
The system can't perform the operation now. Try again later.
Articles 1–20