75 citations · 128 across the 7 of their papers we have counts for
7 papers
Semi-major Axis Jumps as the Activity Trigger in Centaurs and High-Perihelion Jupiter Family Comets
Eva Lilly, Peter Jevčák, Charles Schambeau +7
We present a dynamical study of 39 active Centaurs and 17 high-perihelion (q4.5 au) JFCs with a focus on investigating recent orbital changes as potential triggers for comet-lik…
Comet P/2021 HS (PANSTARRS) and the Challenge of Detecting Low-Activity Comets
Quanzhi Ye, Michael S. P. Kelley, James M. Bauer +8
Jupiter-family comet (JFC) P/2021 HS (PANSTARRS) only exhibits a coma within a few weeks of its perihelion passage at 0.8~au, which is atypical for a comet. Here we present an inve…
TNO or Comet? The Search for Activity and Characterization of Distant Object 418993 (2009 MS9)
Erica Bufanda, Karen J. Meech, Jan T. Kleyna +10
2009 MS9 is a trans-Neptunian object (TNO) whose perihelion brings it close to the distance where some long period comets are seen to become active. Knowing this, and the fact that…
A Survey of CO, CO2, and H2O in Comets and Centaurs
Olga Harrington Pinto, Maria Womack, Yanga R. Fernandez +1
CO and CO are the two dominant carbon-bearing molecules in comae and have major roles in driving activity. Their relative abundances also provide strong observational constrain…
Spitzer Space Telescope Observations of the Nucleus of Comet 103P/Hartley 2
C. M. Lisse, Y. R. Fernandez, W. T. Reach +7
We have used the Spitzer 22-um peakup array to observe thermal emission from the nucleus and trail of comet 103P/Hartley 2, the target of NASA's Deep Impact Extended mission. The c…
A deeper look at the colors of the Saturnian irregular satellites
T. Grav, J. Bauer
We have performed broadband color photometry of the twelve brightest irregular satellites of Saturn with the goal of understanding their surface composition, as well as their physi…
The z=1.6748 C I Absorber Toward PKS 1756+237
K. C. Roth, J. M. Bauer
We report the detection of the 1560 A and 1657 A ground-state C I absorption features in the z(abs)=1.6748 system toward the QSO PKS 1756+237. We find no associated C I* lines with…