E. L. Gibb
YOU?
Author Swipe
View article: The Interstellar Heritage of Comets
The Interstellar Heritage of Comets Open
Comets have similar compositions to interstellar medium ices, suggesting at least some of their molecules may be inherited from an earlier stage of evolution. To investigate the degree to which this might have occurred, we compare the comp…
View article: The interstellar heritage of comets
The interstellar heritage of comets Open
Comets have similar compositions to interstellar medium ices, suggesting at least some of their molecules maybe inherited from an earlier stage of evolution. To investigate the degree to which this might have occurred we compare the compos…
View article: A D/H ratio consistent with Earth’s water in Halley-type comet 12P from ALMA HDO mapping
A D/H ratio consistent with Earth’s water in Halley-type comet 12P from ALMA HDO mapping Open
View article: iSHELL Observations of Halley-Type Comet 13P/Olbers: Investigating Primary Volatile Composition in a Rare Dynamical Class.
iSHELL Observations of Halley-Type Comet 13P/Olbers: Investigating Primary Volatile Composition in a Rare Dynamical Class. Open
Halley-type comets (HTCs) occupy a unique niche in our understanding of the solar system’s formation and evolution. With orbital periods between those of Jupiter-family comets (JFCs) and long-period Oort cloud comets (OCCs), HTCs share a l…
View article: Enriched CO and CH4 abundances in Halley-Type Comet 13P/Olbers through high-resolution near-IR spectroscopy
Enriched CO and CH4 abundances in Halley-Type Comet 13P/Olbers through high-resolution near-IR spectroscopy Open
Comets contain the best-preserved known remnant material of solar system formation. Their volatile compositions provide clues to extant conditions in the protosolar disk at the time and place of their formation [[i],[ii]]. Subsequent gravi…
View article: Comet 12P/Pons-Brooks: The Importance of Halley-Type Comets to Understanding the Early Solar System
Comet 12P/Pons-Brooks: The Importance of Halley-Type Comets to Understanding the Early Solar System Open
Comets are remnants from the early solar system and retain volatiles from the time and place of their formation in the outer protoplanetary disk. Gravitational interactions with the young giant planets scattered many of them into one of tw…
View article: From Deep Impact to the Comet Interceptor: Integrating ground-based near-infrared spectroscopic measurements of volatiles with spacecraft cometary missions
From Deep Impact to the Comet Interceptor: Integrating ground-based near-infrared spectroscopic measurements of volatiles with spacecraft cometary missions Open
Comet research has been a high priority in solar system exploration. The last two decades have witnessed three spacecraft missions to short-period comets (Stardust / NExT, Deep Impact / EPOXI, and Rosetta) as well as tremendously increased…
View article: Infrared Compositional Measurements in Comet C/2017 K2 (Pan-STARRS) at Heliocentric Distances Beyond 2.3 AU
Infrared Compositional Measurements in Comet C/2017 K2 (Pan-STARRS) at Heliocentric Distances Beyond 2.3 AU Open
Comet C/2017 K2 (Pan-STARRS) provided a rare opportunity to investigate the evolution of coma composition and outgassing patterns over a transitional heliocentric distance (Rh) range where activity drivers in comets are thought to change f…
View article: Rapidly varying anisotropic methanol (CH3OH) production in the inner coma of comet 46P/Wirtanen as revealed by the ALMA atacama compact array
Rapidly varying anisotropic methanol (CH3OH) production in the inner coma of comet 46P/Wirtanen as revealed by the ALMA atacama compact array Open
We report the detection of CH3OH emission in comet 46P/Wirtanen on UT 2018 December 8 and 9 using the Atacama Compact Array (ACA), part of the Atacama Large Millimeter/Submillimeter Array (ALMA). These interferometric measurements of CH3OH…
View article: Comets in Context: Comparing Comet Compositions with Protosolar Nebula Models
Comets in Context: Comparing Comet Compositions with Protosolar Nebula Models Open
Comets provide a valuable window into the chemical and physical conditions at the time of their formation in the young solar system. We seek insights into where and when these objects formed by comparing the range of abundances observed fo…
View article: The Volatile Composition of the Inner Coma of Comet 46P/Wirtanen: Coordinated Observations Using iSHELL at the NASA-IRTF and Keck/NIRSPEC-2
The Volatile Composition of the Inner Coma of Comet 46P/Wirtanen: Coordinated Observations Using iSHELL at the NASA-IRTF and Keck/NIRSPEC-2 Open
The 2018 perihelion passage of comet 46P/Wirtanen afforded an opportunity to measure the abundances and spatial distributions of coma volatiles in a Jupiter-family comet with exceptional spatial resolution for several weeks surrounding its…
View article: Rapidly Varying Anisotropic Methanol (CH<sub>3</sub>OH) Production in the Inner Coma of Comet 46P/Wirtanen as Revealed by the ALMA Atacama Compact Array
Rapidly Varying Anisotropic Methanol (CH<sub>3</sub>OH) Production in the Inner Coma of Comet 46P/Wirtanen as Revealed by the ALMA Atacama Compact Array Open
We report the detection of CH 3 OH emission in comet 46P/Wirtanen on UT 2018 December 8 and 9 using the Atacama Compact Array (ACA), part of the Atacama Large Millimeter/Submillimeter Array (ALMA). These interferometric measurements of CH …
View article: Rapidly Varying Anisotropic Methanol (CH$_3$OH) Production in the Inner\n Coma of Comet 46P/Wirtanen as Revealed by the ALMA Atacama Compact Array
Rapidly Varying Anisotropic Methanol (CH$_3$OH) Production in the Inner\n Coma of Comet 46P/Wirtanen as Revealed by the ALMA Atacama Compact Array Open
We report the detection of CH$_3$OH emission in comet 46P/Wirtanen on UT 2018\nDecember 8 and 9 using the Atacama Compact Array (ACA), part of the Atacama\nLarge Millimeter/Submillimeter Array (ALMA). These interferometric measurements\nof…
View article: Quantifying the Hypervolatile Abundances in Jupiter-family Comet 46P/Wirtanen
Quantifying the Hypervolatile Abundances in Jupiter-family Comet 46P/Wirtanen Open
We present analysis of IR and optical spectroscopy of Jupiter-family comet (JFC) 46P/Wirtanen obtained in 2019 January, when the comet had sufficient geocentric velocity to enable studies of the hypervolatiles CO and CH 4 , as well as [O i…
View article: Testing Short-term Variability and Sampling of Primary Volatiles in Comet 46P/Wirtanen
Testing Short-term Variability and Sampling of Primary Volatiles in Comet 46P/Wirtanen Open
The exceptionally favorable close approach of Jupiter-family comet 46P/Wirtanen in 2018 December enabled characterization of its primary volatile composition with exceptionally high spatial resolution and sensitivities using the iSHELL spe…
View article: Probing the Evolutionary History of Comets: An Investigation of the Hypervolatiles CO, CH<sub>4</sub>, and C<sub>2</sub>H<sub>6</sub> in the Jupiter-family Comet 21P/Giacobini–Zinner
Probing the Evolutionary History of Comets: An Investigation of the Hypervolatiles CO, CH<sub>4</sub>, and C<sub>2</sub>H<sub>6</sub> in the Jupiter-family Comet 21P/Giacobini–Zinner Open
Understanding the cosmogonic record encoded in the parent volatiles stored in cometary nuclei requires investigating whether evolution (thermal or otherwise) has modified the composition of short-period comets during successive perihelion …
View article: Volatile composition and coma spatial associations in 46P/Wirtanen as revealed by iSHELL at the NASA-IRTF
Volatile composition and coma spatial associations in 46P/Wirtanen as revealed by iSHELL at the NASA-IRTF Open
The 2018 perihelion passage of comet 46P/Wirtanen afforded an extraordinary opportunity for ground-based observations to measure the volatile composition and coma spatial associations in a Jupiter-family comet with nearly mission-scale sen…
View article: The Peculiar Volatile Composition of CO-dominated Comet C/2016 R2 (PanSTARRS)
The Peculiar Volatile Composition of CO-dominated Comet C/2016 R2 (PanSTARRS) Open
Comet C/2016 R2 (PanSTARRS) has a peculiar volatile composition, with CO being the dominant volatile, as opposed to H 2 O, and one of the largest N 2 /CO ratios ever observed in a comet. Using observations obtained with the Spitzer Space T…
View article: A Radial Velocity Survey of Embedded Sources in the Rho Ophiuchi Cluster
A Radial Velocity Survey of Embedded Sources in the Rho Ophiuchi Cluster Open
We present the results of a radial velocity survey of young stellar objects (YSOs) in early stages of evolution in the core of the L1688 molecular cloud. New and archival spectra obtained with four high-resolution infrared spectrographs we…
View article: Comet C/2013 V5 (Oukaimeden): Evidence for Depleted Organic Volatiles and Compositional Heterogeneity as Revealed through Infrared Spectroscopy
Comet C/2013 V5 (Oukaimeden): Evidence for Depleted Organic Volatiles and Compositional Heterogeneity as Revealed through Infrared Spectroscopy Open
We obtained high-resolution ( λ /Δ λ ∼ 25,000) pre-perihelion spectra of Comet C/2013 V5 (Oukaimeden) using NIRSPEC at Keck II on UT 2014 September 5–6, and CSHELL at the NASA-Infrared Telescope Facility on September 11–13, altogether span…
View article: A Tale of “Two” Comets: The Primary Volatile Composition of Comet 2P/Encke Across Apparitions and Implications for Cometary Science
A Tale of “Two” Comets: The Primary Volatile Composition of Comet 2P/Encke Across Apparitions and Implications for Cometary Science Open
The highly favorable 2017 apparition of 2P/Encke allowed the first comprehensive comparison of primary volatile abundances in a given comet across multiple apparitions. This apparition offered opportunities to address pressing questions in…
View article: Hypervolatiles in a Jupiter-family Comet: Observations of 45P/Honda–Mrkos–Pajdušáková Using iSHELL at the NASA-IRTF
Hypervolatiles in a Jupiter-family Comet: Observations of 45P/Honda–Mrkos–Pajdušáková Using iSHELL at the NASA-IRTF Open
We used the new high spectral resolution cross-dispersed facility spectrograph, iSHELL, at the NASA Infrared Telescope Facility on Maunakea, HI, to observe Jupiter-family comet (JFC) 45P/Honda–Mrkos–Pajdušáková. We report water production …
View article: Beyond 3 au from the Sun: The Hypervolatiles CH<sub>4</sub>, C<sub>2</sub>H<sub>6</sub>, and CO in the Distant Comet C/2006 W3 (Christensen)<sup>∗</sup>
Beyond 3 au from the Sun: The Hypervolatiles CH<sub>4</sub>, C<sub>2</sub>H<sub>6</sub>, and CO in the Distant Comet C/2006 W3 (Christensen)<sup>∗</sup> Open
Comet C/2006 W3 (Christensen) remained outside a heliocentric distance ( R h ) of 3.1 au throughout its apparition, but it presented an exceptional opportunity to directly sense a suite of molecules released from its nucleus. The Cryogenic…
View article: EN ROUTE TO DESTRUCTION: THE EVOLUTION IN COMPOSITION OF ICES IN COMET D/2012 S1 (ISON) BETWEEN 1.2 AND 0.34 AU FROM THE SUN AS REVEALED AT INFRARED WAVELENGTHS*
EN ROUTE TO DESTRUCTION: THE EVOLUTION IN COMPOSITION OF ICES IN COMET D/2012 S1 (ISON) BETWEEN 1.2 AND 0.34 AU FROM THE SUN AS REVEALED AT INFRARED WAVELENGTHS* Open
We report production rates for H 2 O and eight trace molecules (CO, C 2 H 6 , CH 4 , CH 3 OH, NH 3 , H 2 CO, HCN, C 2 H 2 ) in the dynamically new, Sun-grazing Comet C/2012 S1 (ISON), using high-resolution spectroscopy at Keck II and the N…
View article: The Composition of the Protosolar Disk and the Formation Conditions for Comets
The Composition of the Protosolar Disk and the Formation Conditions for Comets Open