LR
Lawrence W. Ramsey
astro-ph.EPastro-ph.SRastro-ph.IMastro-phastro-ph.GA
On Valency
published · living versionsW_te93sycm·v1 · currentpublished
The HETDEX Instrumentation: Hobby-Eberly Telescope Wide Field Upgrade and VIRUS
with Gary J. Hill, Hanshin Lee, Phillip J. MacQueen, Andreas Kelz +44
1 version
Preprints & journals
46 papers in the corpus · 1999–2026MiraSOL: a DMD-based spectrograph for resolved solar spectroscopy2608.01493v2 · Christian Robles, Suvrath Mahadevan, Lawrence Ramsey2026 · 0 citationsarXiv
A Neptune-mass exoplanet in close orbit around a very low-mass star challenges formation models.38033084 · Stefánsson, Guðmundur, Mahadevan, Suvrath, Miguel, Yamila et al.2023 · 31 citationsScience (New York, N.Y.). 2023;382(6674):1031-1035
TOI-2015b: A Warm Neptune with Transit Timing Variations Orbiting an Active mid M Dwarf2310.11775v2 · Sinclaire E. Jones, Gudmundur Stefansson, Kento Masuda et al.2023 · 0 citationsarXiv
Astrometry and Precise Radial Velocities Yield a Complete Orbital Solution for the Nearby Eccentric Brown Dwarf LHS 1610 b2310.07827v2 · Evan Fitzmaurice, Gudmundur Stef'ansson, Robert D. Kavanagh et al.2023 · 8 citationsarXiv
Stable fiber-illumination for extremely precise radial velocities with NEID2307.12403v2 · Shubham Kanodia, Andrea S. J. Lin, Emily Lubar et al.2023 · 18 citationsarXiv
An extreme test case for planet formation: a close-in Neptune orbiting an ultracool star2303.13321v1 · Gudmundur Stefansson, Suvrath Mahadevan, Yamila Miguel et al.2023 · 1 citationarXiv
TOI-3984 A b and TOI-5293 A b: two temperate gas giants transiting mid-M dwarfs in wide binary systems2302.07714v2 · Caleb I. Canas, Shubham Kanodia, Jessica Libby-Roberts et al.2023 · 26 citationsAJ, 166, 30 (2023)
An In-Depth Look at TOI-3884b: a Super-Neptune Transiting a M4 Dwarf with Persistent Star Spot Crossings2302.04757v2 · Jessica E. Libby-Roberts, Maria Schutte, Leslie Hebb et al.2023 · 0 citationsarXiv
The unusual M-dwarf Warm Jupiter TOI-1899~b: Refinement of orbital and planetary parameters2301.10837v2 · Andrea S.J. Lin, Jessica E. Libby-Roberts, Jaime A. Alvarado-Montes et al.2023 · 10 citationsarXiv
TOI-5205 b: A Short-period Jovian Planet Transiting a Mid-M Dwarf2209.11160v3 · Shubham Kanodia, Suvrath Mahadevan, Jessica Libby-Roberts et al.2022 · 50 citationsAJ, 165, 120, 2023
The Active Chromospheres of Lithium-Rich Red Giant Stars2209.05941v1 · Christopher Sneden, Melike Afsar, Zeynep Bozkurt et al.2022 · 21 citationsarXiv
TOI-3757 b: A low density gas giant orbiting a solar-metallicity M dwarf2203.07178v3 · Shubham Kanodia, Jessica Libby-Roberts, Caleb I. Canas et al.2022 · 33 citationsThe Astronomical Journal, Volume 164, Number 3 (2022 AJ 164 81)
Rotational modulation of spectroscopic Zeeman signatures in low-mass stars2201.11288v1 · Ryan C. Terrien, Allison Keen, Katy Oda et al.2022 · 22 citationsarXiv
TOI-3714 b and TOI-3629 b: Two gas giants transiting M dwarfs confirmed with HPF and NEID2201.09963v2 · Caleb I. Canas, Shubham Kanodia, Chad F. Bender et al.2022 · 40 citationsAJ, 164, 50 (2022)
Observing the Sun as a star: Design and early results from the NEID solar feed2112.05711v2 · Andrea S.J. Lin, Andrew Monson, Suvrath Mahadevan et al.2021 · 41 citationsarXiv
A hot Mars-sized exoplanet transiting an M dwarf2112.03958v1 · Caleb I. Canas, Suvrath Mahadevan, William D. Cochran et al.2021 · 10 citationsAJ, 163, 3 (2022)
An eccentric Brown Dwarf eclipsing an M dwarf2112.03959v2 · Caleb I. Canas, Suvrath Mahadevan, Chad F. Bender et al.2021 · 23 citationsAJ, 163, 89 (2022)
Gaia 20eae: A newly discovered episodically accreting young star2112.01717v1 · Arpan Ghosh, Saurabh Sharma, Joe. P. Ninan et al.2021 · 17 citationsarXiv
High resolution near-infrared spectroscopy of a flare around the ultracool dwarf vB 102111.14647v1 · Shubham Kanodia, Lawrence W. Ramsey, Marissa Maney et al.2021 · 15 citationsThe Astrophysical Journal, Volume 925, Number 2, 2022
The Warm Neptune GJ 3470b has a Polar Orbit2111.01295v2 · Gudmundur Stefansson, Suvrath Mahadevan, Cristobal Petrovich et al.2021 · 84 citationsarXiv
The HETDEX Instrumentation: Hobby-Eberly Telescope Wide Field Upgrade and VIRUS2110.03843v2 · Gary J. Hill, Hanshin Lee, Phillip J. MacQueen et al.2021 · 151 citationsAJ 162 298 (2021)on Valency
A Search for Planetary Metastable Helium Absorption in the V1298 Tau System2108.05358v1 · Shreyas Vissapragada, Gu\dhmundur Stef'ansson, Michael Greklek-McKeon et al.2021 · 32 citationsarXiv
TOI-532b: The Habitable-zone Planet Finder confirms a Large Super Neptune in the Neptune Desert orbiting a metal-rich M dwarf host2107.13670v2 · Shubham Kanodia, Gudmundur Stefansson, Caleb I. Canas et al.2021 · 25 citationsAstronomical Journal, 162, 135, 2021
Stellar Activity Manifesting at a One Year Alias Explains Barnard b as a False Positive2105.07005v1 · Jack Lubin, Paul Robertson, Gudmundur Stefansson et al.2021 · 49 citationsarXiv
The Habitable-zone Planet Finder Detects a Terrestrial-mass Planet Candidate Closely Orbiting Gliese 1151: The Likely Source of Coherent Low-frequency Radio Emission from an Inactive Star2102.02233v1 · Suvrath Mahadevan, Gu\dhmundur Stef'ansson, Paul Robertson et al.2021 · 21 citationsarXiv
Chemical Compositions of Red Giant Stars from Habitable Zone Planet Finder Spectroscopy2012.14742v1 · Christopher Sneden, Melike Afsar, Zeynep Bozkurt et al.2020 · 11 citationsarXiv
A warm Jupiter transiting an M dwarf: A TESS single transit event confirmed with the Habitable-zone Planet Finder2007.07098v2 · Caleb I. Canas, Gudmundur Stefansson, Shubham Kanodia et al.2020 · 40 citationsarXiv
A Mini-Neptune and a Venus-Zone Planet in the Radius Valley Orbiting the Nearby M2-dwarf TOI-1266: Validation with the Habitable-zone Planet Finder2006.11180v1 · Gudmundur Stefansson, Ravi Kopparapu, Andrea Lin et al.2020 · 3 citationsarXiv
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 Finder1910.02070v2 · Joe P. Ninan, Gudmundur Stefansson, Suvrath Mahadevan et al.2019 · 82 citationsarXiv
Impact of crosshatch patterns in H2RGs on high precision radial velocity measurements: Exploration of measurement and mitigation paths with HPF1903.06614v1 · Joe P. Ninan, Suvrath Mahadevan, Gudmundur Stefansson et al.2019 · 1 citationarXiv
Ultra-Stable Environment Control for the NEID Spectrometer: Design and Performance Demonstration1902.07729v1 · Paul Robertson, Tyler Anderson, Gudmundur Stefansson et al.2019 · 1 citationarXiv
Proxima Centauri as a Benchmark for Stellar Activity Indicators in the Near Infrared1608.06291v2 · Paul Robertson, Chad Bender, Suvrath Mahadevan et al.2016 · 44 citationsarXiv
An efficient, compact, and versatile fiber double scrambler for high precision radial velocity instruments1505.07463v1 · Samuel Halverson, Arpita Roy, Suvrath Mahadevan et al.2015 · 48 citationsarXiv
Suppression of Fiber Modal Noise Induced Radial Velocity Errors for Bright Emission-Line Calibration Sources1403.1577v1 · Suvrath Mahadevan, Samuel Halverson, Lawrence Ramsey et al.2014 · 45 citationsarXiv
Development of a New, Precise Near-infrared Doppler Wavelength Reference: A Fiber Fabry-Perot Interferometer1209.2704v2 · Samuel Halverson, Suvrath Mahadevan, Lawrence Ramsey et al.2012 · 17 citationsSPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84468Q (2012)
The Habitable-Zone Planet Finder: A Stabilized Fiber-Fed NIR Spectrograph for the Hobby-Eberly Telescope1209.1686v1 · Suvrath Mahadevan, Lawrence Ramsey, Chad Bender et al.2012 · 205 citationsarXiv
An H-band Spectroscopic Metallicity Calibration for M Dwarfs1202.1800v1 · Ryan C. Terrien, Suvrath Mahadevan, Chad F. Bender et al.2012 · 110 citationsarXiv
Rotation Velocities for M-dwarfs0908.4092v1 · J S Jenkins, L W Ramsey, H R A Jones et al.2009 · 183 citationsarXiv
A Pathfinder Instrument for Precision Radial Velocities in the Near-Infrared0806.3749v1 · L.W. Ramsey, J. Barnes, S.L. Redman et al.2008 · 25 citationsarXiv
A Planetary Mass Companion to the K0 Giant HD 170920705.0935v1 · A. Niedzielski (1, M. Konacki, A. Wolszczan (2 et al.2007 · 108 citationsarXiv
Rotational modulation of the photospheric and chromospheric activity in the young, single K2-dwarf PW Andastro-ph/0309072v1 · J. Lopez-Santiago, D. Montes, M.J. Fernandez-Figueroa et al.2003 · 42 citationsAstron.Astrophys.411:489-502,2003
L Dwarfs Found in Sloan Digital Sky Survey Commissioning Data II. Hobby-Eberly Telescope Observationsastro-ph/0110273v1 · Donald P. Schneider, Gillian R. Knapp, Suzanne L. Hawley et al.2001 · 50 citationsAstron.J. 123 (2002) 458
The Chandra Deep Survey of the Hubble Deep Field North Area. II. Results from the Caltech Faint Field Galaxy Redshift Survey Areaastro-ph/0101494v1 · A.E.Hornschemeier, W.N.Brandt, G.P.Garmire et al.2001 · 263 citationsAstrophys.J.554:742-777,2001
High-Redshift Quasars Found in Sloan Digital Sky Survey Commissioning Data V. Hobby-Eberly Telescope Observationsastro-ph/0012083v1 · Donald P. Schneider, Xiaohui Fan (2, Michael A. Strauss et al.2000 · 51 citationsAstron.J. 121 (2001) 1232-1240
Aplanatic corrector designs for the extremely large telescope.18345204 · Moretto, G, Sebring, T A, Ray, F B et al.2010 · 6 citationsApplied optics. 2000;39(16):2805-12
Library of medium-resolution fiber optic echelle spectra of F, G, K, and M field dwarfs to giants starsastro-ph/9901411v1 · David Montes, Lawrence W. Ramsey, Alan D. Welty1999 · 33 citationsAstrophys.J.Suppl. 123 (1999) 283-294
Career total: 244 works. 46 are in this corpus.
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