Zobrazeno 1 - 10
of 294
pro vyhledávání: '"Short period comets"'
Autor:
Anastasios Gkotsinas, David Nesvorný, Aurélie Guilbert-Lepoutre, Sean N. Raymond, Nathan Kaib
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 11, p 243 (2024)
Born as ice-rich planetesimals, cometary nuclei were gravitationally scattered onto their current orbits in the Kuiper Belt and the Oort Cloud during the giant planets’ dynamical instability in the early stages of our solar system’s history. Here
Externí odkaz:
https://doaj.org/article/45ca7fd8e8cd4fe6a309a2132121cfe0
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 7, p 162 (2024)
The Legacy Survey of Space and Time (LSST) at Vera C. Rubin Observatory will deliver high-quality, temporally sparse observations of millions of solar system objects on an unprecedented scale. Such data sets will likely enable the precise estimation
Externí odkaz:
https://doaj.org/article/5e219bc96330490e98656bfb5283c8aa
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 3, p 82 (2024)
Grain–grain collisions shape the three-dimensional size and velocity distribution of the inner Zodiacal Cloud and the impact rates of dust on inner planets, yet they remain the least understood sink of zodiacal dust grains. For the first time, we c
Externí odkaz:
https://doaj.org/article/5ff2f86767ee4879880fe5bfc3be20ba
Publikováno v:
The Astronomical Journal, Vol 167, Iss 3, p 111 (2024)
We performed secular monitoring broadband photometric observations on Jupiter Family Comets (JFCs) 68P/Klemola and 78P/Gehrels 2 from 2018 November to 2020 March with the Yaoan High Precision Telescope. Our main purpose is to study the dust activity,
Externí odkaz:
https://doaj.org/article/8c284aff5583493ab31105f4a2298508
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 2, p 39 (2024)
The study of cometary composition is important for understanding our solar system's early evolutionary processes. Carbon dioxide (CO _2 ) is a common hypervolatile in comets that can drive activity but is more difficult to study than other hypervolat
Externí odkaz:
https://doaj.org/article/8b6ec472efad4c5a93e50d7dc9f238e2
Autor:
A. Fraser Gillan, Alan Fitzsimmons, Larry Denneau, Robert J. Siverd, Ken W. Smith, John L. Tonry, David R. Young
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 1, p 25 (2024)
Jupiter-family comets (JFCs) exhibit a wide range of activity levels and mass loss over their orbits. We analyzed high-cadence observations of 42 active JFCs with the wide-field Asteroid Terrestrial-impact Last Alert System (ATLAS) in
Externí odkaz:
https://doaj.org/article/de6e647f56b4477cbacb0e10b83b3d4e
Autor:
Boncho P. Bonev, Neil Dello Russo, Hideyo Kawakita, Ronald J. Vervack Jr., Michael A. DiSanti, Yoshiharu Shinnaka, Takafumi Ootsubo, Erika L. Gibb, Michael R. Combi, Kathrin Altwegg, Nicolas Biver, Jacques Crovisier, Gregory Doppmann, Geronimo L. Villanueva, Younas Khan, Chemeda T. Ejeta, Mohammad Saki, Adam J. McKay, Anita L. Cochran, Emmanuel Jehin, Nathan X. Roth, Martin A. Cordiner, Yinsi Shou
Publikováno v:
The Astronomical Journal, Vol 166, Iss 6, p 233 (2023)
High-resolution near-infrared ground-based spectroscopic observations of comet 67P/Churyumov–Gerasimenko near its maximum activity in 2021 were conducted from the W. M. Keck Observatory, using the facility spectrograph NIRSPEC. 67P is the best-stud
Externí odkaz:
https://doaj.org/article/855403f7ef4049bd811c461885144ac9
Publikováno v:
The Planetary Science Journal, Vol 4, Iss 12, p 242 (2023)
As comets journey into the inner solar system, they deliver particulates and volatile gases into their comae that reveal the most primitive materials in the solar system. Cometary dust particles provide crucial information for assessing the physicoch
Externí odkaz:
https://doaj.org/article/d6949b071bad4ddcacd7df1a04fdfca6
Autor:
Aurélie Guilbert-Lepoutre, Selma Benseguane, Laurine Martinien, Jérémie Lasue, Sébastien Besse, Björn Grieger, Arnaud Beth
Publikováno v:
The Planetary Science Journal, Vol 4, Iss 11, p 220 (2023)
Large and deep depressions, also known as pits, are observed at the surface of all Jupiter-family comets (JFCs) imaged by spacecraft missions. They offer the opportunity to glimpse the subsurface characteristics of comet nuclei and study the complex
Externí odkaz:
https://doaj.org/article/cb8616081b3e4af7840cb75a4fbfcc69
Autor:
M. A. Cordiner, N. X. Roth, S. N. Milam, G. L. Villanueva, D. Bockelée-Morvan, A. J. Remijan, S. B. Charnley, N. Biver, D. C. Lis, C. Qi, B. P. Bonev, J. Crovisier, J. Boissier
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 1, p 59 (2023)
Gas-phase molecules in cometary atmospheres (comae) originate primarily from (1) outgassing by the nucleus, (2) sublimation of icy grains in the near-nucleus coma, and (3) coma (photo)chemical processes. However, the majority of cometary gases observ
Externí odkaz:
https://doaj.org/article/a3e7e422c943489ca2bf16f4d7ddf194