131 citations · 585 across the 24 of their papers we have counts for
25 papers
Coma Volatile Composition and Thermal Physics in Comet C/2022 E3 (ZTF) Measured Near Closest Approach to Earth with NASA-IRTF
Nathan X. Roth, Michael A. DiSanti, Boncho P. Bonev +9
The 2023 perihelion passage of comet C/2022 E3 (ZTF) afforded an opportunity to measure the abundances and spatial distributions of coma volatiles in an Oort cloud comet at high sp…
The interstellar heritage of comets
Karen Willacy, Liton Majumdar, Boncho Bonev +5
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 deg…
Multi-wavelength JWST observations of (3200) Phaethon show a dehydrated object with an aqueously altered origin
Cristina A. Thomas, Andrew S. Rivkin, Ian Wong +10
We present JWST observations of the near-Earth asteroid (3200) Phaethon using the Near-Infrared Camera (NIRCam), Near-Infrared Spectrograph (NIRSpec), and Mid-Infrared Instrument (…
NEOWISE Data Processing and Color Corrections for Near-Earth Asteroid Observations
Samuel A. Myers, Ellen S. Howell, Yanga R. Fernández +4
The Wide-field Infrared Survey Explorer and NEOWISE missions are a key source of thermal data for near-Earth asteroids (NEAs). These missions, which utilized a space-based platform…
Inconsistencies in Simple Thermal Model Results for Near-Earth Asteroids between Infrared Telescope Facility SpeX and NEOWISE Data
Samuel A. Myers, Ellen S. Howell, Christopher Magri +4
Understanding the properties of near-Earth asteroids (NEAs) is key for many aspects of planetary science, particularly planetary defense. Our current knowledge of NEA sizes and reg…
Chemical composition of comets C/2021 A1 (Leonard) and C/2022 E3 (ZTF) from radio spectroscopy and the abundance of HCOOH and HNCO in comets
N. Biver, D. Bockelee-Morvan, B. Handzlik +14
We present the results of a molecular survey of long period comets C/2021 A1 (Leonard) and C/2022 E3 (ZTF). Comet C/2021 A1 was observed with the IRAM 30-m radio telescope in Novem…
Constraining the Limitations of NEATM-like Models: A Case Study with Near-Earth Asteroid (285263) 1998 QE2
Samuel A. Myers, Ellen S. Howell, Christopher Magri +4
Near-Earth Asteroids (NEAs) are a key testbed for investigations into planet formation, asteroid dynamics, and planetary defense initiatives. These studies rely on understanding NE…
Spatial Distribution of Ultraviolet Emission from Cometary Activity at 67P/Churyumov-Gerasimenko
John W. Noonan, Dominique Bockelée-Morvan, Paul D. Feldman +16
The Alice ultraviolet spectrograph on board the \textit{Rosetta} orbiter provided the first near-nucleus ultraviolet observations of a cometary coma from arrival at comet 67P/Chury…
Analysis of Hybrid Gas-Dust Outbursts Observed at 67P/Churyumov-Gerasimenko
John W. Noonan, Giovanna Rinaldi, Paul D. Feldman +14
Cometary outbursts offer a valuable window into the composition of comet nuclei with their forceful ejection of dust and volatiles in explosive events, revealing the interior compo…
Molecular composition of comet 46P/Wirtanen from millimetre-wave spectroscopy
N. Biver, D. Bockelée-Morvan, J. Boissier +11
We present the results of a molecular survey of comet 46P/Wirtanen undertaken with the IRAM 30-m and NOEMA radio telescopes in December 2018. Observations at IRAM 30-m during the 1…
Near-infrared Spectral Characterization of Solar-type Stars in the Northern Hemisphere
Collin D. Lewin, Ellen S. Howell, Ronald J. Vervack +5
Although solar-analog stars have been studied extensively over the past few decades, most of these studies have focused on visible wavelengths, especially those identifying solar-a…
Upper Limits for Emissions in the Coma of Comet 67P/Churyumov-Gerasimenko Near Perihelion as Measured by Rosetta's Alice Far-Ultraviolet Spectrograph
B. A. Keeney, S. A. Stern, R. J. Vervack +13
The Alice far-UV imaging spectrograph (700-2050 A) acquired over 70,000 spectral images during Rosetta's 2-year escort mission, including over 20,000 in the months surrounding peri…
The Peculiar Volatile Composition of CO-Dominated Comet C/2016 R2 (PanSTARRS)
Adam McKay, Michael DiSanti, Michael Kelley +14
Comet C/2016 R2 (PanSTARRS) has a peculiar volatile composition, with CO being the dominant volatile as opposed to HO and one of the largest N/CO ratios ever observed in a…
Stellar Occultation by Comet 67P/Churyumov-Gerasimenko Observed with Rosetta's Alice Far-Ultraviolet Spectrograph
B. A. Keeney, S. A. Stern, P. D. Feldman +13
Following our previous detection of ubiquitous H2O and O2 absorption against the far-UV continuum of stars located near the nucleus of Comet 67P/Churyumov-Gerasimenko, we present a…
Ultraviolet Observations of Coronal Mass Ejection Impact on Comet 67P/Churyumov-Gerasimenko by Rosetta Alice
John W. Noonan, S. Alan Stern, Paul D. Feldman +13
The Alice ultraviolet spectrograph on the European Space Agency Rosetta spacecraft observed comet 67P/Churyumov-Gerasimenko in its orbit around the Sun for just over two years. Ali…
Evolution of HO Production in Comet C/2012 S1 (ISON) as Inferred from Forbidden Oxygen and OH Emission
Adam J. McKay, Anita L. Cochran, Michael A. DiSanti +5
We present HO production rates for comet C/2012 S1 (ISON) derived from observations of [OI] and OH emission during its inbound leg, covering a heliocentric distance range of 1.…
FUV Spectral Signatures of Molecules and the Evolution of the Gaseous Coma of Comet 67P/Churyumov-Gerasimenko
Paul D. Feldman, Michael F. A'Hearn, Jean-Loup Bertaux +10
The Alice far-ultraviolet imaging spectrograph onboard Rosetta observed emissions from atomic and molecular species from within the coma of comet 67P/Churyumov-Gerasimenko during t…
Infrared Spectroscopy of HR 4796A's Bright Outer Cometary Ring + Tenuous Inner Hot Dust Cloud
Carey M. Lisse, Mike L. Sitko, Massimo Marengo +4
We have obtained new NASA IRTF SpeX spectra of the HR 4796A debris ring system. We find a unique red excess flux that extends out to ~9 um in Spitzer IRS spectra, where thermal emi…
Near-infrared thermal emission from near-Earth asteroids: Aspect-dependent variability
Nicholas A. Moskovitz, David Polishook, Francesca E. DeMeo +6
Here we explore a technique for constraining physical properties of near-Earth asteroids (NEAs) based on variability in thermal emission as a function of viewing aspect. We present…
Thermal Properties and an Improved Shape Model for Near-Earth Asteroid (162421) 2000 ET70
Sean E. Marshall, Ellen S. Howell, Christopher Magri +8
We present thermal properties and an improved shape model for potentially hazardous asteroid (162421) 2000 ET70. In addition to the radar data from 2000 ET70's apparition in 2012,…
Evolution of HO, CO, and CO Production in Comet C/2009 P1 Garradd During the 2011-2012 Apparition
Adam J. McKay, Anita L. Cochran, Michael A. DiSanti +6
We present analysis of high spectral resolution NIR spectra of CO and HO in comet C/2009 P1 (Garradd) taken during its 2011-2012 apparition with the CSHELL instrument on NASA's…
Saturn's upper atmosphere during the Voyager era: Reanalysis and modeling of the UVS occultations
Ronald J. Vervack, Julianne I. Moses
The Voyager 1 and 2 Ultraviolet Spectrometer (UVS) solar and stellar occultation dataset represents one of the primary, pre-Cassini sources of information that we have on the neutr…
Complex organic molecules in comets C/2012 F6 (Lemmon) and C/2013 R1 (Lovejoy): detection of ethylene glycol and formamide
N. Biver, D. Bockelée-Morvan, V. Debout +9
A spectral survey in the 1 mm wavelength range was undertaken in the long-period comets C/2012 F6 (Lemmon) and C/2013 R1 (Lovejoy) using the 30 m telescope of the Institut de radio…
Early Observations and Analysis of the Type Ia SN 2014J in M82
G. H. Marion, D. J. Sand, E. Y. Hsiao +23
We present optical and near infrared (NIR) observations of the nearby Type Ia SN 2014J. Seventeen optical and twenty-three NIR spectra were obtained from 10 days before (10d) to…