Absolute colors and phase coefficients of trans-Neptunian objects: HV-HR and relative phase coefficients
| Autor: | Pablo Santos-Sanz, Carmen Ayala-Loera, Nicolás Morales, Alvaro Alvarez-Candal, Estela Fernández-Valenzuela, Rene Duffard, J. L. Ortiz |
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| Přispěvatelé: | Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brasil), Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Ministerio de Economía y Competitividad (España), European Commission, Junta de Andalucía |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Earth and Planetary Astrophysics (astro-ph.EP) 010504 meteorology & atmospheric sciences FOS: Physical sciences Astronomy and Astrophysics 01 natural sciences Methods observational Technique: photometric photometric [Technique] Methods: observational Space and Planetary Science 0103 physical sciences Kuiper belt objects: general media_common.cataloged_instance general [Kuiper belt objects] observational [Methods] Relative phase European union Astronomy observatory 010303 astronomy & astrophysics Humanities 0105 earth and related environmental sciences media_common Astrophysics - Earth and Planetary Astrophysics |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname Monthly Notices of the Royal Astronomical Society |
| Popis: | The trans-Neptunian objects (TNOs) are small Solar System bodies at large distances from the Sun. As such, their physical properties are difficult to measure. Accurate determination of their physical parameters is essential to model and theorize the actual composition and distribution of the population, and to improve our understanding of the formation and evolution of the Solar System. The objective of this work is to construct phase curves in two filters, $V$ and $R$, of a large TNO sample obtaining absolute magnitudes ($H$) and phase coefficients ($\beta$), and study possible relations between them and other physical parameters (orbital elements, sizes, and albedos). We used our own data, together with data from the literature, to create the phase curves assuming an overall linear trend. We obtained new magnitudes for 35 TNOs, 27 in the V filter and 35 in the R filter. These magnitudes, together with data from the literature, allowed us to obtain absolutes magnitudes, 114 in the V filter and 113 in the R filter, of which 106 have both. From the search for correlations we found a strong anticorrelation between $H_V-H_R$ and $\Delta \beta=\beta_V-\beta_R$, which is probably more related to surface structure than to composition or size of the objects. Comment: 8 pages, 5 figures, online material at http://extranet.on.br/alvarez/TNOs- Abs_Mags/phase-curves.tar |
| Databáze: | OpenAIRE |
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