کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1774358 | 1021162 | 2011 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Estimating the density of intermediate size KBOs from considerations of volatile retention Estimating the density of intermediate size KBOs from considerations of volatile retention](/preview/png/1774358.png)
By using a hydrodynamic atmospheric escape mechanism (Levi, A., Podolak, M. [2009]. Icarus 202, 681–693) we show how the unusually high mass density of Quaoar could have been predicted (constrained), without any knowledge of a binary companion. We suggest an explanation of the recent spectroscopic observations of Orcus and Charon [Delsanti, A., Merlin, F., Guilbert, A., Bauer, J., Yang, B., Meech, K.J., 2010. Astron. Astrophys. 520, A40; Cook, J.C., Desch, S.J., Roush, T.L., Trujillo, C.A., Geballe, T.R., 2007. Astrophys. J. 663, 1406–1419]. We present a simple relation between the detection of certain volatile ices and the body mass density and diameter. As a test case we implement the relations on the KBO 2003 AZ84 and give constraints on its mass density. We also present a method of relating the latitude-dependence of hydrodynamic gas escape to the internal structure of a rapidly rotating body and apply it to Haumea.
► We apply the theory of coronal flow to the gas flow off KBO’s.
► We show how the presence of surface volatiles is related to the density of the body.
► We show how the high density of Quaoar could have been predicted.
► We predict which volatiles should be observable on particular KBO’s.
► We extend the theory of coronal flow to rapidly rotating bodies.
► We show how the percent of the surface covered by volatile ices can give information on the internal structure of the body.
Journal: Icarus - Volume 214, Issue 1, July 2011, Pages 308–315