Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: "TNOs are Cool": A survey of the trans-Neptunian region XIV. Size/albedo
  characterization of the Haumea family observed with Herschel and Spitzer   A group of trans-Neptunian objects (TNO) are dynamically related to the dwarf
planet 136108 Haumea. Ten of them show strong indications of water ice on their
surfaces, are assumed to have resulted from a collision, and are accepted as
the only known TNO collisional family. Nineteen other dynamically similar
objects lack water ice absorptions and are hypothesized to be dynamical
interlopers. We have made observations to determine sizes and geometric albedos
of six of the accepted Haumea family members and one dynamical interloper. Ten
other dynamical interlopers have been measured by previous works. We compare
the individual and statistical properties of the family members and
interlopers, examining the size and albedo distributions of both groups. We
also examine implications for the total mass of the family and their ejection
velocities. We use far-infrared space-based telescopes to observe the target
TNOs near their thermal peak and combine these data with optical magnitudes to
derive sizes and albedos using radiometric techniques. We determine the
power-law slope of ejection velocity as a function of effective diameter. The
detected Haumea family members have a diversity of geometric albedos $\sim$
0.3-0.8, which are higher than geometric albedos of dynamically similar objects
without water ice. The median geometric albedo for accepted family members is
$p_V=0.48_{-0.18}^{+0.28}$, compared to 0.08$_{-0.05}^{+0.07}$ for the
dynamical interlopers. In the size range $D=175-300$ km, the slope of the
cumulative size distribution is $q$=3.2$_{-0.4}^{+0.7}$ for accepted family
members, steeper than the $q$=2.0$\pm$0.6 slope for the dynamical interlopers
with D$< $500 km. The total mass of Haumea's moons and family members is 2.4%
of Haumea's mass. The ejection velocities required to emplace them on their
current orbits show a dependence on diameter, with a power-law slope of
0.21-0.50.

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The categories of this paper are: supr-con
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The categories of this paper are: q-bio
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: stat
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The categories of this paper are: cmp-lg
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org