The Meudon Multicolor Survey (2MS) of Centaurs and trans-neptunian objects: extended dataset and status on the correlations reported

Doressoundiram, A.; Peixinho, N.; Doucet, C.; Mousis, O.; Barucci, Maria Antonella; Petit, Jean-Marc; Veillet, Christian

doi:10.1016/j.icarus.2004.09.009

Cited by 65 publications

(88 citation statements)

References 50 publications

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“…For the H V magnitude values (a) see Sects. 4.1 and 5 of this paper; (b) Rabinowitz et al 2007;(c) Romanishing & Tegler (2005); (d) Doressoundiram et al (2005); ( sum of errors in the two epochs maps. Each epoch map has an associated error map that represents the standard deviation of data samples divided by the square root of the number of data samples.…”

Section: Herschel-spire Observationsmentioning

confidence: 84%

TNOs are Cool: A survey of the trans-Neptunian region

Fornasier

Lellouch

Müller

et al. 2013

A&A

146

189

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Aims. Trans-Neptunian objects (TNOs) are bodies populating the Kuiper belt and they are believed to retain the most pristine and least altered material of the solar system. The Herschel open time key programme entitled "TNOs are Cool: A survey of the transNeptunian region" has been awarded 373 h to investigate the albedo, size distribution and thermal properties of TNOs and Centaurs. Here we focus on the brightest targets observed by both the PACS and SPIRE multiband photometers: the dwarf planet Haumea, six TNOs (Huya, Orcus, Quaoar, Salacia, 2002 UX25, and 2002 TC302), and two Centaurs (Chiron and Chariklo). Methods. Flux densities are derived from PACS and SPIRE instruments using optimised data reduction methods. The spectral energy distribution obtained with the Herschel PACS and SPIRE instruments over 6 bands (centred at 70, 100, 160, 250, 350, and 500 μm), with Spitzer-MIPS at 23.7 and 71.4 μm, and with WISE at 11.6 and 22.1 μm in the case of 10199 Chariklo, has been modelled with the NEATM thermal model in order to derive the albedo, diameter, and beaming factor. For the Centaurs Chiron and Chariklo and for the 1000 km sized Orcus and Quaoar, a thermophysical model was also run to better constrain their thermal properties. Results. We derive the size, albedo, and thermal properties, including thermal inertia and surface emissivity, for the 9 TNOs and Centaurs. Several targets show a significant decrease in their spectral emissivity longwards of ∼300 μm and especially at 500 μm. Using our size estimations and the mass values available in the literature, we also derive the bulk densities for the binaries Quaoar/Weywot (2.18 +0.43 −0.36 g/cm 3 ), Orcus/Vanth (1.53 +0.15 −0.13 g/cm 3 ), and Salacia/Actea (1.29 +0.29 −0.23 g/cm 3 ). Quaoar's density is similar to that of the other dwarf planets Pluto and Haumea, and its value implies high contents of refractory materials mixed with ices.

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Section: Herschel-spire Observationsmentioning

confidence: 84%

TNOs are Cool: A survey of the trans-Neptunian region

Fornasier

Lellouch

Müller

et al. 2013

A&A

146

189

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“…(a) Romanishin & Tegler (2005); (b) Doressoundiram et al (2005); (c) Jewitt & Luu (2001); (d) Rabinowitz et al (2007); (e) Sheppard (2010); ( f ) Derived from MPC V-data; (g) Derived from MPC R-data; (h) Benecchi et al (2009); Perna & Dotto (2011, priv. comm.…”

Section: Observationsmentioning

confidence: 99%

“TNOs are Cool”: A survey of the trans-Neptunian region

Santos-Sanz

Lellouch

Fornasier

et al. 2012

A&A

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Context. Physical characterization of trans-Neptunian objects, a primitive population of the outer solar system, may provide constraints on their formation and evolution. Aims. The goal of this work is to characterize a set of 15 scattered disk (SDOs) and detached objects, in terms of their size, albedo, and thermal properties. Methods. Thermal flux measurements obtained with the Herschel-PACS instrument at 70, 100 and 160 μm, and whenever applicable, with Spitzer-MIPS at 24 and 70 μm, are modeled with radiometric techniques, in order to derive the objects' individual size, albedo and when possible beaming factor. Error bars are obtained from a Monte-Carlo approach. We look for correlations between these and other physical and orbital parameters. Results. Diameters obtained for our sample range from 100 to 2400 km, and the geometric albedos (in V band) vary from 3.8% to 84.5%. The unweighted mean V geometric albedo for the whole sample is 11.2% (excluding Eris); 6.9% for the SDOs, and 17.0% for the detached objects (excluding Eris). We obtain new bulk densities for three binary systems: Ceto/Phorcys, Typhon/Echidna and Eris/Dysnomia. Apart from correlations clearly due to observational bias, we find significant correlations between albedo and diameter (more reflective objects being bigger), and between albedo, diameter and perihelion distance (brighter and bigger objects having larger perihelia). We discuss possible explanations for these correlations.

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“…Current observational studies of TNOs are mainly focused on color photometry or spectroscopy (e.g. Jewitt & Luu 2001;Boehnhardt et al 2002;Barucci et al 2002;Hainaut & Delsanti 2002;Doressoundiram et al 2002Doressoundiram et al , 2005Delsanti et al 2004;Peixinho et al 2004;Fornasier et al 2004;etc.). Some of these studies use statistical analysis to try to find likely correlations between color trends and orbital parameters.…”

Section: Introductionmentioning

confidence: 99%

Short-term rotational variability of eight KBOs from Sierra Nevada Observatory

Ortiz¹,

Gutiérrez²,

Santos-Sanz³

et al. 2006

A&A

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In 2001, we started a CCD photometry programme to study the short-term variability of some of the brightest TNOs and Centaurs from the Sierra Nevada observatory. In this paper, we report our latest results on short-term rotational variability of 7 trans-neptunian objects: Orcus (2004 DW), 2002 AW 197 , 2003 AZ 84 , 2003 VS 2 , 2002 VE 95 , 2001 YH 140 , 1996 , and a Centaur: 2003 CO 1 . Analysis of the photometric data revealed confident periodicities for 6 objects, with all the lightcurve amplitudes smaller than 0.2 mag, except for 2003 VS 2 . Considering all the objects for which reliable lightcurve amplitudes have been reported in the literature (32), the new statistics reveal that 31% of the bodies show variability above 0.15 mag, but only 16% of them display larger amplitudes than 0.4 mag. Here we present a summary of the main results obtained for these objects, and discuss the implications for their basic physical properties.

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The Meudon Multicolor Survey (2MS) of Centaurs and trans-neptunian objects: extended dataset and status on the correlations reported

Cited by 65 publications

References 50 publications

TNOs are Cool: A survey of the trans-Neptunian region

TNOs are Cool: A survey of the trans-Neptunian region

“TNOs are Cool”: A survey of the trans-Neptunian region

Short-term rotational variability of eight KBOs from Sierra Nevada Observatory

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