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26 April 2024 |
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Satellites of the largest Kuiper belt objects | | M.E. Brown
; M.A. van Dam
; A.H. Bouchez
; D. Le Mignant
; R.D. Campbell
; J.C.Y. Chin
; A. Conrad
; S.K. Hartman
; E.M. Johansson
; R.E. Lafon
; D.L. Rabinowitz
; P.J. Stomski
; Jr.
; D.M. Summers
; C.A. Trujillo
; P.L. Wizinowich
; | | Date: |
3 Oct 2005 | | Subject: | astro-ph | | Abstract: | We have searched the four brightest objects in the Kuiper belt for the presence of satellites using the newly commissioned Keck Observatory Laser Guide Star Adaptive Optics system. Satellites are seen around three of the four objects: Pluto (whose satellite Charon is well-known), 2003 EL61, and 2003 UB313. The object 2005 FY9, the brightest Kuiper belt object after Pluto, does not have a satellite detectable within 0.4 arcseconds with a brightness of more than 0.5% of the primary. The presence of satellites to 3 of the 4 brightest Kuiper belt objects is inconsistent with the fraction of satellites in the Kuiper belt at large at the 99.1% confidence level, suggesting a different formation mechanism for these largest KBO satellites. The satellites of 2003 EL61 and 2003 UB313, with fractional brightnesses of 5% and 2% of their primaries, respectively, are significantly fainter relative to their primaries than other known Kuiper belt object satellites, again pointing to possible differences in their origin. | | Source: | arXiv, astro-ph/0510029 | | Services: | Forum | Review | PDF | Favorites | |
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