Search Results - "Margheim, Steven"
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GHOST commissioning science results III: Characterizing an iron-poor damped Lyman α system
Published in Monthly notices of the Royal Astronomical Society (14-06-2024)“…Abstract The Gemini High-resolution Optical SpecTrograph (GHOST) is a new echelle spectrograph available on the Gemini-South telescope as of Semester 2024A. We…”
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Journal Article -
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SN 2018agk: A Prototypical Type Ia Supernova with a Smooth Power-law Rise in Kepler (K2)
Published in The Astrophysical journal (01-12-2021)“…Abstract We present the 30 minutes cadence Kepler/K2 light curve of the Type Ia supernova (SN Ia) SN 2018agk, covering approximately one week before explosion,…”
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The beginning of a GHOST Story
Published in Nature astronomy (01-12-2022)“…The GHOST spectrograph will shortly be available on the Gemini South Telescope for studies of stellar and galactic abundances and, in time, exoplanets…”
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Journal Article -
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GHOST Commissioning Science Results III: Characterizing an iron-poor damped Lyman $\alpha$ system
Published 15-04-2024“…The Gemini High-resolution Optical SpecTrograph (GHOST) is a new echelle spectrograph available on the Gemini-South telescope as of Semester 2024A. We present…”
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Journal Article -
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The Science Performance of the Gemini High Resolution Optical Spectrograph
Published 14-01-2024“…The Gemini High Resolution Optical Spectrograph (GHOST) is a fiber-fed spectrograph system on the Gemini South telescope that provides simultaneous wavelength…”
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Lithium in the Pleiades
Published 01-01-2007“…The light-element lithium (Li) has long been an invaluable tool in the study of the properties and evolution of stellar interiors. Since it was first observed…”
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Dissertation -
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SN 2018agk: A Prototypical Type Ia Supernova with a Smooth Power-law Rise in Kepler (K2)
Published 28-12-2021“…The Astrophysical Journal, 2021, Volume 923, Number 2 We present the 30-min cadence Kepler/K2 light curve of the Type Ia supernova (SN Ia) SN 2018agk, covering…”
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Journal Article -
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Lithium in the Pleiades
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Dissertation -
9
The Solar Neighborhood. XXXIX. Parallax Results from the CTIOPI and NOFS Programs: 50 New Members of the 25 Parsec White Dwarf Sample
Published 02-06-2017“…We present 114 trigonometric parallaxes for 107 nearby white dwarf (WD) systems from both the Cerro Tololo Inter-American Observatory Parallax Investigation…”
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Journal Article -
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A statistical analysis of circumstellar material in Type Ia supernovae
Published 18-08-2013“…A key tracer of the elusive progenitor systems of Type Ia supernovae (SNe Ia) is the detection of narrow blueshifted time-varying Na I D absorption lines,…”
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Journal Article