ESO large program on Centaurs and TNOs: visible colors—final results

Peixinho, N.; Boehnhardt, H.; Belskaya, I. N.; Doressoundiram, A.; Barucci, M. A.; Delsanti, A.

doi:10.1016/j.icarus.2004.03.004

Cited by 92 publications

(143 citation statements)

References 34 publications

Supporting

Mentioning

111

Contrasting

Unclassified

Order By: Relevance

“…Optical colors measured for this object are B − V = 0.74 ± 0.02 and V − R = 0.52 ± 0.01 (Tegler et al 2003); colors that are typical of the relatively "neutral" group of Centaurs and TNOs. Colors measured by Peixinho et al (2004) differ slightly, but are generally within the quoted uncertainties. Ortiz et al (2003) placed an upper limit of 0.15 mags on any possible lightcurve from the unresolved binary.…”

Section: Discussionsupporting

confidence: 58%

Discovery of a binary Centaur

Noll

Levison

Grundy

et al. 2006

Icarus

View full text Add to dashboard Cite

Section: Discussionsupporting

confidence: 58%

Discovery of a binary Centaur

Noll

Levison

Grundy

et al. 2006

Icarus

View full text Add to dashboard Cite

“…We use procedures described in Appendix B (Sect. B.2) and in Peixinho et al (2004) to deal with these effects to obtain Spearman-ρ values that take into account the error bars.…”

Section: Description Of the Methodsmentioning

confidence: 99%

“…comm. ); ( j) Grundy et al (2008); (k) Perna et al (2010); (m) Peixinho et al (2004); (n) Sheppard & Jewitt (2002); (o) Belskaya et al (2003); (p) Sheppard (2007); (q) Tegler & Romanishin (1998); (r) Jewitt & Luu (1998); (s) Barucci et al (1999); (t) Tegler et al (2003); (u) Trujillo & Brown (2002); (v) Boehnhardt et al (2002); (w) Tegler (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

Self Cite

145

View full text Add to dashboard Cite

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.

show abstract

“…We use a modified form of the test, which takes into account asymmetric error bars and corrects the significance for small numbers statistics. The details of our method are described in Peixinho et al (2004) and Santos-Sanz et al (2012). The significance P of a correlation is the probability of getting a higher or equal correlation coefficient value −1 ≤ ρ ≤ 1 if no correlation existed on the parent population, from which we extracted the sample.…”

Section: Correlationsmentioning

confidence: 99%

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

Vilenius

Kiss

Mommert

et al. 2012

A&A

Self Cite

117

View full text Add to dashboard Cite

Context. Trans-Neptunian objects (TNO) represent the leftovers of the formation of the solar system. Their physical properties provide constraints to the models of formation and evolution of the various dynamical classes of objects in the outer solar system. Aims. Based on a sample of 19 classical TNOs we determine radiometric sizes, geometric albedos and beaming parameters. Our sample is composed of both dynamically hot and cold classicals. We study the correlations of diameter and albedo of these two subsamples with each other and with orbital parameters, spectral slopes and colors. Methods. We have done three-band photometric observations with Herschel/PACS and we use a consistent method for data reduction and aperture photometry of this sample to obtain monochromatic flux densities at 70.0, 100.0 and 160.0 μm. Additionally, we use Spitzer/MIPS flux densities at 23.68 and 71.42 μm when available, and we present new Spitzer flux densities of eight targets. We derive diameters and albedos with the near-Earth asteroid thermal model (NEATM). As auxiliary data we use reexamined absolute visual magnitudes from the literature and data bases, part of which have been obtained by ground based programs in support of our Herschel key program. Results. We have determined for the first time radiometric sizes and albedos of eight classical TNOs, and refined previous size and albedo estimates or limits of 11 other classicals. The new size estimates of 2002 MS 4 and 120347 Salacia indicate that they are among the 10 largest TNOs known. Our new results confirm the recent findings that there are very diverse albedos among the classical TNOs and that cold classicals possess a high average albedo (0.17 ± 0.04). Diameters of classical TNOs strongly correlate with orbital inclination in our sample. We also determine the bulk densities of six binary TNOs.

show abstract

ESO large program on Centaurs and TNOs: visible colors—final results

Cited by 92 publications

References 34 publications

Discovery of a binary Centaur

Discovery of a binary Centaur

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

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

Contact Info

Product

Resources

About