The Cool Surfaces of Binaries Near-Earth Asteroids

Marco Delbo; K. Walsh; M. Mueller

Abstract

We present results from thermal-infrared observations of binary near-Earth asteroids (NEAs). These objects, in general, have surface temperatures cooler than the average values for non-binary NEAs. We discuss how this may be evidence of higher-than-average surface thermal inertia. The comparison of these binary NEAs with all NEAs and rapidly rotating NEAs suggests a binary formation mechanism capable of altering surface properties, possibly removing regolith: an obvious candidate is the YORP effect. --- Acknowledgments This research was carried out while Marco Delbo and Kevin Walsh were Henri Poincare Fellows at the Observatoire de la Cote d'Azur. The Henri Poincare Fellowship is funded by the CNRS-INSU, the Conseil General des Alpes-Maritimes and the Rotary International -- District 1730.

Original language	English
Pages (from-to)	433
Journal	Bulletin of the American Astronomical Society
Volume	40
Publication status	Published - 1-Sept-2008
Event	40th DPS meeting, Amerivan Astronomical Society, 2008 - Ithaca, NY, United States Duration: 10-Oct-2008 → 15-Oct-2008

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@article{89c4a0a2989b4ecda530bca1506e13a4,

title = "The Cool Surfaces of Binaries Near-Earth Asteroids",

abstract = "We present results from thermal-infrared observations of binary near-Earth asteroids (NEAs). These objects, in general, have surface temperatures cooler than the average values for non-binary NEAs. We discuss how this may be evidence of higher-than-average surface thermal inertia. The comparison of these binary NEAs with all NEAs and rapidly rotating NEAs suggests a binary formation mechanism capable of altering surface properties, possibly removing regolith: an obvious candidate is the YORP effect. --- Acknowledgments This research was carried out while Marco Delbo and Kevin Walsh were Henri Poincare Fellows at the Observatoire de la Cote d'Azur. The Henri Poincare Fellowship is funded by the CNRS-INSU, the Conseil General des Alpes-Maritimes and the Rotary International -- District 1730.",

author = "Marco Delbo and K. Walsh and M. Mueller",

year = "2008",

month = sep,

day = "1",

language = "English",

volume = "40",

pages = "433",

journal = "Bulletin of the American Astronomical Society",

publisher = "American Astronomical Society",

note = "40th DPS meeting, Amerivan Astronomical Society, 2008 ; Conference date: 10-10-2008 Through 15-10-2008",

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TY - JOUR

T1 - The Cool Surfaces of Binaries Near-Earth Asteroids

AU - Delbo, Marco

AU - Walsh, K.

AU - Mueller, M.

PY - 2008/9/1

Y1 - 2008/9/1

N2 - We present results from thermal-infrared observations of binary near-Earth asteroids (NEAs). These objects, in general, have surface temperatures cooler than the average values for non-binary NEAs. We discuss how this may be evidence of higher-than-average surface thermal inertia. The comparison of these binary NEAs with all NEAs and rapidly rotating NEAs suggests a binary formation mechanism capable of altering surface properties, possibly removing regolith: an obvious candidate is the YORP effect. --- Acknowledgments This research was carried out while Marco Delbo and Kevin Walsh were Henri Poincare Fellows at the Observatoire de la Cote d'Azur. The Henri Poincare Fellowship is funded by the CNRS-INSU, the Conseil General des Alpes-Maritimes and the Rotary International -- District 1730.

AB - We present results from thermal-infrared observations of binary near-Earth asteroids (NEAs). These objects, in general, have surface temperatures cooler than the average values for non-binary NEAs. We discuss how this may be evidence of higher-than-average surface thermal inertia. The comparison of these binary NEAs with all NEAs and rapidly rotating NEAs suggests a binary formation mechanism capable of altering surface properties, possibly removing regolith: an obvious candidate is the YORP effect. --- Acknowledgments This research was carried out while Marco Delbo and Kevin Walsh were Henri Poincare Fellows at the Observatoire de la Cote d'Azur. The Henri Poincare Fellowship is funded by the CNRS-INSU, the Conseil General des Alpes-Maritimes and the Rotary International -- District 1730.

M3 - Meeting Abstract

VL - 40

SP - 433

JO - Bulletin of the American Astronomical Society

JF - Bulletin of the American Astronomical Society

T2 - 40th DPS meeting, Amerivan Astronomical Society, 2008

Y2 - 10 October 2008 through 15 October 2008

ER -

The Cool Surfaces of Binaries Near-Earth Asteroids

Abstract

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