Showing 1 - 20 results of 61 for search '"Lick Observatory"', query time: 0.20s Refine Results
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    Revealing observatory networks through object stories: Instrumental networks by Emily Akkermans, Kelley Wilder, Samantha Thompson

    Published 2023-10-01
    “…The objects explored are: the Hourly Signal Relay, used within the time signal system of the Royal Observatory, Greenwich, from the mid-nineteenth century; photographic glass plates from the British 1874 transit of Venus expeditions; and an electronic imaging tube, Lallemand’s camera, developed in Paris and used at the Lick Observatory in California in the 1960s. Each story uses examples of failure as a means of highlighting a lack of robustness in or effort required to maintain these networks. …”
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    Early Time Spectropolarimetry of the Aspherical Type II Supernova SN 2023ixf by Sergiy S. Vasylyev, Yi Yang, Alexei V. Filippenko, Kishore C. Patra, Thomas G. Brink, Lifan Wang, Ryan Chornock, Raffaella Margutti, Elinor L. Gates, Adam J. Burgasser, Preethi R. Karpoor, Natalie LeBaron, Emma Softich, Christopher A. Theissen, Eli Wiston, WeiKang Zheng

    Published 2023-01-01
    “…Polarimetry was obtained with the Kast double spectrograph on the Shane 3 m telescope at Lick Observatory, representing the earliest such observations ever captured for an SN. …”
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    N III Bowen Lines and Fluorescence Mechanism in the Symbiotic Star AG Peg by Siek Hyung, Seong-Jae Lee, Kang Hwan Lee

    Published 2018-03-01
    “…We have investigated the intensities and full width at half maximum (FWHM) of the high dispersion spectroscopic N III emission lines of AG Peg, observed with the Hamilton Echelle Spectrograph (HES) in three different epochs at Mt. Hamilton’s Lick Observatory. The earlier theoretical Bowen line study assumed the continuum fluorescence effect, presenting a large discrepancy with the present data. …”
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    The TESS-Keck Survey. VIII. Confirmation of a Transiting Giant Planet on an Eccentric 261 Day Orbit with the Automated Planet Finder Telescope* by Vanderburg, Andrew, Seager, Sara

    Published 2022
    “…Citizen scientists identified the 24 hr single-transit event shortly after the data were released, allowing a Doppler monitoring campaign with the Automated Planet Finder telescope at Lick Observatory to begin promptly. The radial velocity observations refined the orbital period of TOI-2180 b to be 260.8 ± 0.6 days, revealed an orbital eccentricity of 0.368 ± 0.007, and discovered long-term acceleration from a more distant massive companion. …”
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    Precise radial velocities of giant stars by Trifonov, T, Reffert, S, Tan, X, Lee, M, Quirrenbach, A

    Published 2014
    “…We report the discovery of a new planetary system around the K giant η Cet (HIP 5364, HD 6805, HR 334) based on 118 high-precision optical radial velocities taken at Lick Observatory since July 2000. Since October 2011 an additional nine near-infrared Doppler measurements have been taken using the ESO CRIRES spectrograph (VLT, UT1). …”
    Journal article
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    Cosmological Insights into the Early Accretion of r -process-enhanced Stars. I. A Comprehensive Chemodynamical Analysis of LAMOST J1109+0754 by Mardini, Mohammad K, Placco, Vinicius M, Meiron, Yohai, Ishchenko, Marina, Avramov, Branislav, Mazzarini, Matteo, Berczik, Peter, Sedda, Manuel Arca, Beers, Timothy C, Frebel, Anna, Taani, Ali, Donnari, Martina, Al-Wardat, Mashhoor A, Zhao, Gang

    Published 2022
    “…Our results are based on the 7D measurements supplied by Gaia and the chemical composition derived from a high-resolution (R ∼ 110,000), high signal-to-noise ratio (S N ∼ 60) optical spectrum obtained by the 2.4 m Automated Planet Finder Telescope at Lick Observatory. We obtain chemical abundances of 31 elements (from lithium to thorium). …”
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