122 citations · 362 across the 18 of their papers we have counts for
13 papers · 1 filter
Ice, Ice, Maybe? Investigating 46P/Wirtanen's Inner Coma For Icy Grains
Theodore Kareta, John W. Noonan, Walter M. Harris +1
The release of volatiles from comets is usually from direct sublimation of ices on the nucleus, but for very or hyper-active comets other sources have to be considered to account f…
Near-Infrared Spectroscopy Of The Nucleus Of Low-Activity Comet P/2016 BA During Its 2016 Close Approach
Theodore Kareta, Vishnu Reddy, Juan A. Sanchez +1
The Near-Earth Comet P/2016 BA (PanSTARRS) is a slow-rotatating nearly-dormant object, a likely dynamical twin of 252P/LINEAR, and was recently shown to have a mid-infrared…
Operating Spacecraft Around Comets: Evaluation of the Near-Nucleus Environment
C. M. Lisse, M. R. Combi, T. L. Farnham +9
We present a study of the current state of knowledge concerning spacecraft operations and potential hazards while operating near a comet nucleus. Starting from simple calculations…
Investigating the Relationship between (3200) Phaethon and (155140) 2005 UD through Telescopic and Laboratory Studies
Theodore Kareta, Vishnu Reddy, Neil Pearson +2
The relationship between the Near-Earth Objects (3200) Phaethon and (155140) 2005 UD is unclear. While both are parents to Meteor Showers, (the Geminids and Daytime Sextantids, res…
Repeating gas ejection events from comet 45P/Honda-Mrkos-Pajdušáková
Alessondra Springmann, Walter M. Harris, Erin L. Ryan +6
Studying materials released from Jupiter-family comets (JFCs) -- as seen in their inner comæ, the envelope of gas and dust that forms as the comet approaches the Sun -- improves th…
Complex Water Ice Mixtures on NII Nereid: Constraints from NIR Reflectance
Benjamin N. L. Sharkey, Vishnu Reddy, Juan A. Sanchez +2
Nereid, Neptune's third largest satellite, lies in an irregular orbit and is the only outer satellite in the system (apart from Triton) that can be spectroscopically characterized…
FUV Observations of the Inner Coma of 46P/Wirtanen
John W. Noonan, Walter M. Harris, Steven Bromley +6
Far ultraviolet observations of comets yield information about the energetic processes that dissociate the sublimated gases from their primitive surfaces. Understanding which emiss…
Contemporaneous Multi-Wavelength and Precovery Observations of Active Centaur P/2019 LD2 (ATLAS
Theodore Kareta, Laura M. Woodney, Charles Schambeau +10
Gateway Centaur and Jupiter co-orbital P/2019 LD2 (ATLAS) (Sarid et al. 2019) provides the first opportunity to observe the migration of a Solar System small body from a Centaur or…
Carbon Chain Depletion of 2I/Borisov
Theodore Kareta, Jennifer Andrews, John W. Noonan +10
The composition of comets in the Solar System come in multiple groups thought to encode information about their formation in different regions of the outer protosolar disk. The rec…
Physical Characterization of the December 2017 Outburst of the Centaur 174P/Echeclus
Theodore Kareta, Benjamin Sharkey, John Noonan +4
The Centaurs are the small solar system bodies intermediate between the active inner solar system Jupiter Family Comets and their inactive progenitors in the trans-Neptunian region…
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.…
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…
GALEX FUV Observations of Comet C/2004 Q2 (Machholz): The Ionization Lifetime of Carbon
Jeffrey P. Morgenthaler, Walter M. Harris, Michael R. Combi +2
We present a measurement of the lifetime of ground state atomic carbon, C(^3P), against ionization processes in interplanetary space and compare it to the lifetime expected from th…