OSSOS XI. No active centaurs in the Outer Solar System Origins Survey
OSSOS XI. No active centaurs in the Outer Solar System Origins Survey
复制标题
奥索斯十一。
DOI:
10.1051/0004-6361/201834021
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发表时间:
2019
影响因子:
6.5
通讯作者:
Cabral N
中科院分区:
文献类型:
--
作者:
Cabral N
ContextCentaurs are icy objects in transition between the trans-Neptunian region and the inner solar system, orbiting the Sun in the giant planet region. Some centaurs display cometary activity, which cannot be sustained by the sublimation of water ice in this part of the solar system, and has been hypothesized to be due to the crystallization of amorphous water ice.AimsIn this work, we investigate centaurs discovered by the Outer Solar System Origins Survey (OSSOS) and search for cometary activity. Tentative detections would improve understanding of the origins of activity among these objects.MethodsWe search for comae and structures by fitting and subtracting both point spread functions and trailed point-spread functions from the OSSOS images of each centaur. When available, Col-OSSOS images were used to search also for comae.ResultsNo cometary activity is detected in the OSSOS sample. We track the recent orbital evolution of each new centaur to confirm that none would actually be predicted to be active, and we provide size estimates for the objects.ConclusionsThe addition of 20 OSSOS objects to the population of ~250 known centaurs is consistent with the currently understood scenario, in which drastic drops in perihelion distance induce changes in the thermal balance prone to trigger cometary activity in the giant planet region.
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DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
R. Sisto;A. Brunini;G. D. Elía
通讯作者:
G. D. Elía
DOI:
10.1088/0004-6256/137/5/4296
发表时间:
2006-09
期刊:
The Astronomical Journal
影响因子:
--
作者:
D. Jewitt
通讯作者:
D. Jewitt
DOI:
10.3847/1538-3881/aac210
发表时间:
2018-06
期刊:
The Astronomical Journal
影响因子:
--
作者:
W. Romanishin;S. Tegler
通讯作者:
W. Romanishin;S. Tegler
DOI:
10.3389/fspas.2018.00014
发表时间:
2018
期刊:
arXiv: Earth and Planetary Astrophysics
影响因子:
--
作者:
S. Lawler;J. Kavelaars;J. Kavelaars;M. Alexandersen;M. Bannister;B. Gladman;J. Petit;C. Shankman;C. Shankman
通讯作者:
C. Shankman
影响因子:
6.5
作者:
N. Peixinho;A. Doressoundiram;A. Delsanti;H. Boehnhardt;M. Barucci;I. B. Lesia;O. Paris;Caaul;Observatorio Astronomico de Lisboa;M. F. Astronomie;Astronomical Observatory of Vilnius University
通讯作者:
N. Peixinho;A. Doressoundiram;A. Delsanti;H. Boehnhardt;M. Barucci;I. B. Lesia;O. Paris;Caaul;Observatorio Astronomico de Lisboa;M. F. Astronomie;Astronomical Observatory of Vilnius University