Results 11 to 20 of about 4,877 (221)

Parent Volatiles in Comet 9P/Tempel 1: Before and After Impact

Science, 2005
We quantified eight parent volatiles (H 2 O, C 2 H 6 , HCN, CO, CH 3 OH, H 2 CO, C 2 H 2 , and CH 4 ) in the Jupiter-family comet Tempel 1 using high-
Mumma, Michael J., DiSanti, Michael A., Magee-Sauer, Karen, Bonev, Boncho P., Villanueva, Geronimo L., Kawakita, Hideyo, Russo, Neil Dello, Gibb, Erika L., Blake, Geoffrey A., Lyke, James E., Campbell, Randall D., Aycock, Joel, Conrad, Al, Hill, Grant M.   +13 more
openaire   +5 more sources

Submillimetric spectroscopic observations of volatiles in comet C/2004 Q2 (Machholz) [PDF]

Astronomy & Astrophysics, 2012
We aim to determine the production rates of several parent and product volatiles and the 12C/13C isotopic carbon ratio in the long-period comet C/2004 Q2 (Machholz), which is likely to originate from the Oort Cloud.
Biver, N., Bockelée-Morvan, D., Crovisier, J., de Val-Borro, M., Hartogh, P., Jarchow, C., Küppers, M., Rengel, M., Villanueva, G. L.   +8 more
core   +7 more sources

Inventory of the volatiles on comet 67P/Churyumov-Gerasimenko from Rosetta/ROSINA [PDF]

Astronomy & Astrophysics, 2015
Context. The ESA Rosetta spacecraft (S/C) is tracking comet 67P/Churyumov-Gerasimenko in close vicinity. This prolonged encounter enables studying the evolution of the volatile coma composition. Aims. Our work aims at comparing the diversity of the coma of 67P/Churyumov-Gerasimenko at large heliocentric distance to study the evolution of the comet ...
Le Roy, Léna, Altwegg, Kathrin, Balsiger, Hans, Berthelier, Jean-Jacques, Bieler, André, Briois, Christelle, Calmonte, Ursina Maria, Combi, Michael R., De Keyser, Johan, Dhooghe, Frederik, Fiethe, Björn, Fuselier, Stephen A., Gasc, Sébastien, Gombosi, Tamas I., Hässig, Myrtha, Jäckel, Annette, Rubin, Martin, Tzou, Chia-Yu   +17 more
openaire   +5 more sources

A binary main belt comet

Nature, 2017
The asteroids are primitive solar system bodies which evolve both collisionally and through disruptions due to rapid rotation [1]. These processes can lead to the formation of binary asteroids [2-4] and to the release of dust [5], both directly and, in ...
Agarwal, Jessica, Jewitt, David, Larson, Stephen, Mutchler, Max, Weaver, Harold   +4 more
core   +3 more sources

Volatiles in the H2O and CO2 ices of comet 67P/Churyumov–Gerasimenko

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT European Space Agency’s Rosetta spacecraft at comet 67P/Churyumov–Gerasimenko (67P) was the first mission that accompanied a comet over a substantial fraction of its orbit. On board was the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis mass spectrometer suite to measure the local densities of the volatile species ...
Martin Rubin, Kathrin Altwegg, Jean-Jacques Berthelier, Michael R Combi, Johan De Keyser, Stephen A Fuselier, Tamas I Gombosi, Murthy S Gudipati, Nora Hänni, Kristina A Kipfer, Niels F W Ligterink, Daniel R Müller, Yinsi Shou, Susanne F Wampfler   +13 more
openaire   +6 more sources

Dust and Volatiles in the Disintegrating Comet C/2019 Y4 (ATLAS)

The Astrophysical Journal
C/2019 Y4 (ATLAS) is an Oort cloud comet with an orbital period of ∼5895 yr. Starting in 2020 March, its nucleus underwent disintegration. In order to investigate the gas and dust properties of C/2019 Y4 (ATLAS) during its disintegration, we obtained ...
Ruining Zhao, Aigen Li, Bin Yang, Liang Wang, Huijuan Wang, Yu-Juan Liu, Jifeng Liu   +6 more
doaj   +3 more sources

COMETARY VOLATILES AND THE ORIGIN OF COMETS [PDF]

The Astrophysical Journal, 2012
We describe recent results on the CO/CO2/H2O composition of comets together with a survey of older literature (primarily for CO/H2O) and compare these with models of the protoplanetary disk. Even with the currently small sample, there is a wide dispersion in abundance ratios and little if any systematic difference between Jupiter-family comets (JFCs ...
A'Hearn, Michael F., Feaga, Lori M., Keller, H. Uwe, Kawakita, Hideyo, Hampton, Donald L., Kissel, Jochen, Klaasen, Kenneth P., Mcfadden, Lucy A., Meech, Karen J., Schultz, Peter H., Sunshine, Jessica M., Thomas, Peter C., Veverka, Joseph, Yeomans, Donald K., Besse, Sebastien, Bodewits, Dennis, Farnham, Tony L., Groussin, Olivier, Kelley, Michael S., Lisse, Carey M., Merlin, Frederic, Protopapa, Silvia, Wellnitz, Dennis D.   +22 more
openaire   +3 more sources

Volatile-rich comets ejected early on during Solar System formation

Astronomy & Astrophysics, 2022
Context. Comet C/2016 R2 PanSTARRS (hereafter C/2016 R2) presents an unusually high N2/CO abundance ratio, as well as a heavy depletion in H2O, making it the only known comet of its kind. Understanding its dynamical history is therefore of essential importance as it would allow us to gain a clearer understanding of the evolution of planetesimal ...
Sarah E. Anderson, Jean-Marc Petit, Benoît Noyelles, Olivier Mousis, Philippe Rousselot   +4 more
openaire   +4 more sources

Testing Short-term Variability and Sampling of Primary Volatiles in Comet 46P/Wirtanen [PDF]

The Planetary Science Journal, 2021
Abstract 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 spectrograph at the NASA Infrared Telescope Facility on Maunakea, HI.
Younas Khan, Erika L. Gibb, Boncho P. Bonev, Nathan X. Roth, Mohammad Saki, Michael A. DiSanti, Neil Dello Russo, Ronald J. Vervack, Adam J. McKay, Michael R. Combi, Yinsi Shou, Martin A. Cordiner, Hideyo Kawakita, Nicolas Fougere, Silvia Protopapa   +14 more
openaire   +1 more source

An Infrared Investigation of Volatiles in Comet 21P/Giacobini-Zinner [PDF]

Icarus, 1999
Abstract We obtained high resolution (λ/δλ∼10,000–20,000) infrared (IR) spectra of Comet 21P/Giacobini–Zinner (GZ) at five different wavelengths between 1.9 and 5.0 μm during 25–29 October 1998 using CSHELL at the NASA Infrared Telescope Facility (IRTF) on Mauna Kea.
H.A. Weaver, G. Chin, D. Bockelée-Morvan, J. Crovisier, T.Y. Brooke, D.P. Cruikshank, T.R. Geballe, S.J. Kim, R. Meier   +8 more
openaire   +1 more source