Pequeños Cuerpos del Sistema Solar

    General
    Descripción

    Este Proyecto estudia las propiedades físicas y composicionales de los llamados pequeños cuerpos del Sistema Solar, que incluyen asteroides, objetos helados y cometas. Entre los grupos de mayor interés destacan los objetos trans-neptunianos (TNOs), incluyendo los objetos más lejanos detectados hasta la fecha (Extreme-TNOs o ETNOs); los cometas, y los objetos transicionales cometa-asteroide (Centauros y los llamados Main Belt Comets - MBCs); los asteroides primitivos. Los dos últimos grupos contienen el material más primordial y prístino del Sistema Solar son claves para comprender su origen y evolución. Se destacan entre los asteroides aquellos que se acercan a la órbita de la Tierra (near-Earth asteroids o NEAs), así como los considerados potencialmente peligrosos (Potentially Hazardous Asteroids o PHAs). Debido a su cercanía, los NEAs son los objetos más accesibles al estudio in-situ con misiones espaciales y su futura explotación como fuente de materias primas (asteroid mining). Se destaca el liderazgo por parte del IP del grupo de un survey espectroscópico (visible e infrarrojo cercano) de asteroids primitivos (PRIMitive Asteroid Spectroscopic Survey - PRIMASS). Este proyecto ha recibido financiación de la NASA (17-PDART17_2-0097, IP: N. Pinilla-Alonso, 137.000€ - 2 años) para archivar todos estos espectros (más de 800) en el Small Bodies Node del NASA Planetary Data System.

    Los estudios de composición superficial y propiedades físicas y térmicas de estos cuerpos se llevan a cabo utilizando espectroscopia en un amplio rango de longitudes de onda (desde 0.35 a 24 micras), así como imagen y fotometría en el mismo rango. Los datos se interpretan utilizando modelos de scattering y termo-físicos. El proyecto trabaja además en el análisis de las propiedades físicas de los núcleos cometarios y de las propiedades del polvo y el gas en las comas cometarias, muy especialmente en el estudio del polvo en las colas de los MBCs y de los mecanismos por los cuales se emite.

    Este grupo mantiene diversas colaboraciones internacionales con otros grupos entre las que podemos destacar: (1) la pertenencia al Grupo de Ciencia de la misión de NASA OSIRIS-REx, en concreto al "Image Processing Working Group", en donde se encarga del tratamiento de los mapas de color que se están obteniendo actualmente con las cámaras OCAMS; (2) la pertenencia al núcleo central de proponentes de las misiones M5 de ESA CASTALIA, CASTAway y Hera; (3) la coordinación de un grupo internacional de estudio de NEAs llamado EURONEAR (European Near Earth Asteroid Research); (4) la pertenencia al "Center for Lunar and Asteroid Surface Science" (CLASS, NASA); (5) la integración en el grupo de Sistema Solar de la misión Euclid; (6) la participación activa en los surveys J-PLUS y J-PASS, en los que trabaja en la explotación de las observaciones de objetos del Sistema Solar; (7) la pertenencia a los grupos de trabajo de Sistema Solar de los telescopios Gaia y JWST.

    Investigador principal
    Gestor del proyecto
    Personal del proyecto
    Colaboradores
    Dr.
    Noemí Pinilla-Alonso
    Dr.
    Humberto Campins
    Dr.
    Fernando Moreno Danvila
    Dr.
    Y. Fernández
    Dr.
    José Luis Ortiz
    Dr.
    R. Duffard
    Prof.
    R. Hil-Hutton

    Publicaciones relacionadas

    • The spatial distribution of impact craters on Ryugu
      Asteroid 162173 Ryugu has numerous craters. The initial measurement of impact craters on Ryugu, by Sugita et al. (2019), is based on Hayabusa2 ONC images obtained during the first month after the arrival of Hayabusa2 in June 2018. Utilizing new images taken until February 2019, we constructed a global impact crater catalogue of Ryugu, which
      Hirata, Naoyuki et al.

      Fecha de publicación:

      3
      2020
      Número de citas
      15
    • Analysis in the visible range of NASA Lucy mission targets: Eurybates, Polymele, Orus and Donaldjohanson.
      Jupiter Trojan asteroids are minor bodies that share Jupiter's orbit around the Sun. Although not yet well understood in origin and composition, they have surface properties that, besides being comparable with other populations of small bodies in the Solar System, hold information that may restrict models of planetary formation. Because of this
      Souza-Feliciano, A. C. et al.

      Fecha de publicación:

      3
      2020
      Número de citas
      8
    • The spectroscopic properties of the Lixiaohua family, cradle of Main Belt Comets
      The Lixiaohua collisional family lies in the Outer Main Belt, close to the well characterized Themis primitive class family. It is one of the only three families that host two active asteroids that present cometary-like activity: 313P/Gibbs and 358P/PANSTARRS (P/2012 T1). As a part of the PRIMitive Asteroid Spectroscopy Survey (PRIMASS), we present
      De Prá, M. N. et al.

      Fecha de publicación:

      3
      2020
      Número de citas
      3
    • An ultra-short period rocky super-Earth orbiting the G2-star HD 80653★
      Ultra-short period (USP) planets are a class of exoplanets with periods shorter than one day. The origin of this sub-population of planets is still unclear, with different formation scenarios highly dependent on the composition of the USP planets. A better understanding of this class of exoplanets will, therefore, require an increase in the sample
      Frustagli, G. et al.

      Fecha de publicación:

      1
      2020
      Número de citas
      23
    • Microquasar V404 Cyg /GS 2023+338: MASTER optical observations during the June and December 2015 super-outbursts
      We present several thousands homogeneous photometric (WBVRI and polarization) observations of the microquasar black hole binary V404 Cyg, obtained by the MASTER Global Robotic Network (Lipunov et al. 2010). MASTER were the first telescopes to optically monitor the microquasar after its gamma-ray onset from 18 h 34 m 09 s UT on June 15, 2015 ()
      Lipunov, V. M. et al.

      Fecha de publicación:

      10
      2019
      Número de citas
      3
    • The MASTER Global Robotic Telescope Network: Observations of Asteroid NEA 2015 TB145
      The results of white-light photometry for a uniquely long series of data (13.5 hours of observations, 1124 measurements) for the Near-Earth Asteroid (NEA) 2015 TB145 are presented. These data were obtained with the MASTER-Amur and MASTER-Tavrida wide-field robotic telescopes of the Mobile Astronomical System of Telescope-Robots (MASTER) global
      Zimnukhov, D. S. et al.

      Fecha de publicación:

      12
      2019
      Número de citas
      3
    • The descent and bouncing path of the Hayabusa2 lander MASCOT at asteroid (162173) Ryugu
      Images from the Optical Navigation Camera system (ONC) onboard the Hayabusa2 spacecraft show the MASCOT lander during its descent to the surface of asteroid (162173) Ryugu. We used results from a previous stereo-photogrammetric analysis that provided precise ONC image orientation data (camera position and pointing), ONC orthoimages, and an ONC
      Scholten, F. et al.

      Fecha de publicación:

      12
      2019
      Número de citas
      16
    • The MASCOT landing area on asteroid (162173) Ryugu: Stereo-photogrammetric analysis using images of the ONC onboard the Hayabusa2 spacecraft
      A high-resolution 3D surface model, map-projected to a digital terrain model (DTM), and precisely ortho-rectified context images (orthoimages) of MASCOT landing site area are important data sets for the scientific analysis of relevant data that have been acquired with MASCOT's image camera system MASCam and other instruments (e.g., the radiometer
      Preusker, F. et al.

      Fecha de publicación:

      12
      2019
      Número de citas
      9
    • Episodes of particle ejection from the surface of the active asteroid (101955) Bennu
      Active asteroids are those that show evidence of ongoing mass loss. We report repeated instances of particle ejection from the surface of (101955) Bennu, demonstrating that it is an active asteroid. The ejection events were imaged by the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security─Regolith Explorer)
      Lauretta, D. S. et al.

      Fecha de publicación:

      12
      2019
      Número de citas
      104
    • The last pieces of the primitive inner belt puzzle: Klio, Chaldaea, Chimaera, and Svea
      Aims: Several primitive families in the inner region of the main asteroid belt were identified as potential sources for two near-Earth asteroids (NEAs), (101955) Bennu and (162173) Ryugu, targets of the sample-return missions OSIRIS-REx and Hayabusa2, respectively. Four of the families, located at high proper inclinations (i > 10°), have not yet
      Morate, David et al.

      Fecha de publicación:

      10
      2019
      Número de citas
      18
    • The Changing Rotational Light-curve Amplitude of Varuna and Evidence for a Close-in Satellite
      From CCD observations carried out with different telescopes, we present short-term photometric measurements of the large trans-Neptunian object Varuna in 10 epochs, spanning around 19 years. We observe that the amplitude of the rotational light curve has changed considerably during this period of time from 0.41 to 0.55 mag. In order to explain this
      Fernández-Valenzuela, Estela et al.

      Fecha de publicación:

      9
      2019
      Número de citas
      6
    • Distribution and spectrophotometric classification of basaltic asteroids
      We aim to determine the distribution of basaltic asteroids (classified as V-types) based on the spectrophotometric data reported in the MOVIS-C catalogue. A total of 782 asteroids were identified. The observations with all four filters (Y, J, H, Ks), available for 297 of these candidates, allow a reliable comparison with the laboratory data of
      Mansour, J. -A. et al.

      Fecha de publicación:

      2
      2020
      Número de citas
      10
    • Near-infrared spectroscopy of the Klio primitive inner-belt asteroid family
      The PRIMitive Asteroid Spectroscopic Survey (PRIMASS) aims to characterize primitive asteroids throughout the asteroid belt in the visible and near-infrared (NIR). There are eight primitive families in the inner main belt: Polana-Eulalia, Erigone, Sulamitis, Clarissa, Chaldaea, Klio, Svea and Chimaera. PRIMASS has already characterized all 8
      Arredondo, A. et al.

      Fecha de publicación:

      1
      2020
      Número de citas
      4
    • Mega-Archive and the EURONEAR tools for data mining world astronomical images
      The world astronomical image archives offer huge opportunities to time-domain astronomy sciences and other hot topics such as space defense, and astronomical observatories should improve this wealth and make it more accessible in the big data era. In 2010 we introduced the Mega-Archive database and the Mega-Precovery server for data mining images
      Vaduvescu, O. et al.

      Fecha de publicación:

      1
      2020
      Número de citas
      5
    • A Reverse Shock in GRB 181201A
      We present comprehensive multiwavelength radio to X-ray observations of GRB 181201A spanning from ≈150 s to ≈163 days after the burst, comprising the first joint ALMA─VLA─GMRT observations of a gamma-ray burst (GRB) afterglow. The radio and millimeter-band data reveal a distinct signature at ≈3.9 days, which we interpret as reverse-shock (RS)
      Laskar, Tanmoy et al.

      Fecha de publicación:

      10
      2019
      Número de citas
      41
    • Interstellar Visitors: A Physical Characterization of Comet C/2019 Q4 (Borisov) with OSIRIS at the 10.4 m GTC
      de León, Julia et al.

      Fecha de publicación:

      9
      2019
      Número de citas
      46
    • Multivariable statistical analysis of spectrophotometry and spectra of (162173) Ryugu as observed by JAXA Hayabusa2 mission
      Context. Starting from late June 2018, the JAXA asteroid sample return mission Hayabusa2 acquired a large quantity of resolved images and spectra of the surface of the asteroid (162173) Ryugu. Aims: By studying the visible and near-infrared spectral behavior across the surface of Ryugu using a statistical analysis, we aim to distinguish spectral
      Barucci, M. A. et al.

      Fecha de publicación:

      9
      2019
      Número de citas
      14
    • Compositional characterization of V-type candidate asteroids identified using the MOVIS catalogue
      The main objective of this work is to compositionally analyse the visible to near-infrared spectra of a total of six V-type candidates identified using the MOVIS (Y-J) versus (J-Ks) colour-colour plot and located outside the Vesta collisional family. We obtained visible and near-infrared spectra of these asteroids using the 2.54m Isaac Newton
      Medeiros, H. et al.

      Fecha de publicación:

      9
      2019
      Número de citas
      9
    • Near-Earth asteroids spectroscopic survey at Isaac Newton Telescope
      Context. The population of near-Earth asteroids (NEAs) shows a large variety of objects in terms of physical and dynamical properties. They are subject to planetary encounters and to strong solar wind and radiation effects. Their study is also motivated by practical reasons regarding space exploration and long-term probability of impact with the
      Popescu, M. et al.

      Fecha de publicación:

      7
      2019
      Número de citas
      27
    • Asteroid pairs: A complex picture
      We studied a sample of 93 asteroid pairs, i.e., pairs of genetically related asteroids that are on highly similar heliocentric orbits. We estimated times elapsed since separation of pair members (i.e., pair age) that are between 7 × 103 yr and a few 106 yr. With photometric observations, we derived the rotation periods P1 for all the primaries (i.e
      Pravec, P. et al.

      Fecha de publicación:

      11
      2019
      Número de citas
      60

    Charlas relacionadas

    No se han encontrado charlas relacionadas.

    Congresos relacionados

    No se han encontrado congresos relacionados.