Año de inicio
2013
Unidad organizativa
Institución organizadora
Subvenciones relacionadas:
General
Descripción
La búsqueda de vida en el Universo se ha visto impulsada por los recientes descubrimientos de planetas alrededor de otras estrellas (los llamados exoplanetas), convirtiéndose en uno de los campos más activos dentro de la Astrofísica moderna. En los últimos años los descubrimientos cada vez más numerosos de nuevos exoplanetas y los últimos avances en el estudio de sus atmósferas no sólo están dándonos valiosa nueva información sobre sus propiedades físicas, sino que nos están permitiendo además poner las propiedades de los planetas de nuestro Sistema Solar dentro un contexto más global. El campo esta acercándose al importante descubrimiento de los primeros planetas potencialmente habitables, impulsando estudios más detallados de estos planetas. Con el lanzamiento de las nuevas misiones como JWST, CHEOPS, TESS, ARIEL o PLATO, al campo de exoplanetas se le plantea un futuro muy excitante.
Es por esta razon que este campo se ayuda de y, a su vez motiva, el desarrollo de instrumentación cada vez más sensible y estable tanto para telescopios de tierra como para las misiones espaciales. Dos frentes para los que nuestro grupo esta especialmente preparado. Por un lado, durante los ultimos años hemos desarrollado tecnicas de observacion y reduccion de transitos de exoplanetas para los telescopios del ORM, siendo el nuestro uno de los grupos mas productivos en la explotacion de GTC. Por otro lado, todas las misiones espaciales ESA (presentes y futuras) relacionadas con exoplanetas cuentan con uno o varios de los componentes del proyecto como CoIs.
En el marco de este proyecto, pretendemos que los investigadores del IAC mantengan una situación aventajada con la explotación de OSIRIS y EMIR, instrumentos de primera luz de GTC, y participen en la construcción, comisionado y operación de nuevos instrumentos, como el espectrografo óptico de alta resolución HORUS en el GTC. La explotacion de la fotometria y espectroscopia de transitos con LIRIS en el WHT es tambien uno de nuestros principales intereses, especialmente en preparacion de la instalacion en 2015 del instrumento EMIR en el GTC.
En resumen, el proyecto "Exoplanetas y Astrobiologia" se centrará entorno a estas cuatro lineas principales de actuacion:
1) Caracterización de las propiedades fisicas y atmosfericas de exoplanetas (GTC, WHT, HARPSN, CARMENES, ESPRESSO, ARIEL etc.)
2) Búsquedas y confirmacion de exoplanetas por transitos (CoRoT, Kepler, K2, CHEOPS, XO, LCOGT, WFC, PLATO, etc.)
3) Busquedas/ confirmacion de exoplanetas por velocidad radial (HARPSN, HORUS, LCOGT, SONG, CARMENES)
4) Astrobiología
Miembros
Investigador principal
Enric
Pallé Bago
Personal del proyecto
Hans Jörg
Deeg Deeg
Nicolas Cédric
Lodieu
Javier Andrés
Licandro Goldaracena
Víctor Javier
Sánchez Bejar
Juan Antonio
Belmonte Avilés
Roi
Alonso Sobrino
Grzegorz
Nowak
Patricia
Chinchilla Gallego
A. L. Cabrera Lavers
Felipe Andrés
Murgas Alcaino
Hannu
Parviainen
Colaboradores
Dr.
Paulo Miles Paez
Dr.
Maria Rosa Zapatero Osorio
Dr.
M. Mas Hesse
Dr.
M. Deleuil
Dr.
D. Gandolfi
Dr.
M. Fridlund
Dr.
L. Doyle
Dr.
H. Rauer
Dr.
J. Cabrera
Dr.
Sz. Csizmadia
Dr.
D. Pollacco
Dr.
A. Hatzes
Dr.
T. Mazeh
Dr.
T. Boyajian
Dr.
B. Tingley
Dr.
D. Martin
Dr.
A Triaud
Dr.
D. Fabrycky
Antonio Cabrera Lavers
Resultados
- Deteccion de He en la atmosfera de un exoplaneta por primera vez, publicado en Science.
- Deteccion de un planeta entorno a la estrella de Barnard, publicado en Nature
- Deteccion de los primeros planetas del la mision TESS, con varios articulos de impacto
- Descubrimiento de rasgos de Na y Halpha en el espectro de KELT-20b con el TNG
- Publicación del Handbook of Exoplanets, la obra de referencia más extenso en el campo de los exoplanetas. Este Manual fue editado por miembros de nuestro grupo e incluye contribuciones de unos 300 expertos en todo el mundo, incluidos 12 miembros de IAC.
Actividad científica
Publicaciones relacionadas
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Hot planets around cool stars - two short-period mini-Neptunes transiting the late K-dwarf TOI-1260We present the discovery and characterization of two sub-Neptunes in close orbits, as well as a tentative outer planet of a similar size, orbiting TOI-1260 - a low metallicity K6 V dwarf star. Photometry from Transiting Exoplanet Survey Satellite(TESS) yields radii of R b = 2.33 ± 0.10 and R c = 2.82 ± 0.15 R ⊕, and periods of 3.13 and 7.49 d forGeorgieva, I. Y. et al.
Fecha de publicación:
82021 -
Processing GOTO survey data with the Rubin Observatory LSST Science Pipelines II: Forced Photometry and lightcurvesWe have adapted the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) Science Pipelines to process data from the Gravitational-wave Optical Transient Observer (GOTO) prototype. In this paper, we describe how we used the LSST Science Pipelines to conduct forced photometry measurements on nightly GOTO data. By comparing the photometryMakrygianni, L. et al.
Fecha de publicación:
62021 -
An ultra-short-period transiting super-Earth orbiting the M3 dwarf TOI-1685Dynamical histories of planetary systems, as well as the atmospheric evolution of highly irradiated planets, can be studied by characterizing the ultra-short-period planet population, which the TESS mission is particularly well suited to discover. Here, we report on the follow-up of a transit signal detected in the TESS sector 19 photometric timeBluhm, P. et al.
Fecha de publicación:
62021 -
The TESS Objects of Interest Catalog from the TESS Prime MissionWe present 2241 exoplanet candidates identified with data from the Transiting Exoplanet Survey Satellite (TESS) during its 2 yr Prime Mission. We list these candidates in the TESS Objects of Interest (TOI) Catalog, which includes both new planet candidates found by TESS and previously known planets recovered by TESS observations. We describe theGuerrero, Natalia M. et al.
Fecha de publicación:
62021 -
ESPRESSO mass determination of TOI-263b: an extreme inhabitant of the brown dwarf desertThe TESS mission has reported a wealth of new planetary systems around bright and nearby stars amenable for detailed characterizations of planet properties and atmospheres. However, not all interesting TESS planets orbit around bright host stars. TOI-263 b is a validated ultra-short-period substellar object in a 0.56-day orbit around a faint (V =Palle, E. et al.
Fecha de publicación:
62021 -
Mass and density of the transiting hot and rocky super-Earth LHS 1478 b (TOI-1640 b)One of the main objectives of the Transiting Exoplanet Survey Satellite (TESS) mission is the discovery of small rocky planets around relatively bright nearby stars. Here, we report the discovery and characterization of the transiting super-Earth planet orbiting LHS 1478 (TOI-1640). The star is an inactive red dwarf (J ~ 9.6 mag and spectral typeSoto, M. G. et al.
Fecha de publicación:
52021 -
ARES. V. No Evidence For Molecular Absorption in the HST WFC3 Spectrum of GJ 1132 bWe present a study on the spatially scanned spectroscopic observations of the transit of GJ 1132 b, a warm (∼500 K) super-Earth (1.13 R ⊕) that was obtained with the G141 grism (1.125-1.650 μm) of the Wide Field Camera 3 (WFC3) on board the Hubble Space Telescope. We used the publicly available Iraclis pipeline to extract the planetary transmissionMugnai, Lorenzo V. et al.
Fecha de publicación:
62021 -
Stellar clustering and orbital architecture of planetary systemsContext. Revealing the mechanisms shaping the architecture of planetary systems is crucial for our understanding of their formation and evolution. In this context, it has been recently proposed that stellar clustering might be the key in shaping the orbital architecture of exoplanets. Aims: The main goal of this work is to explore the factors thatAdibekyan, V. et al.
Fecha de publicación:
52021 -
Weighing stars from birth to death: mass determination methods across the HRDThe mass of a star is the most fundamental parameter for its structure, evolution, and final fate. It is particularly important for any kind of stellar archaeology and characterization of exoplanets. There exist a variety of methods in astronomy to estimate or determine it. In this review we present a significant number of such methods, beginningSerenelli, Aldo et al.
Fecha de publicación:
122021 -
Evidence for TiO in the Atmosphere of the Hot Jupiter HAT-P-65 bWe present the low-resolution transmission spectra of the puffy hot Jupiter HAT-P-65b (0.53 M Jup, 1.89 R Jup, T eq = 1930 K), based on two transits observed using the OSIRIS spectrograph on the 10.4 m Gran Telescopio CANARIAS. The transmission spectra of the two nights are consistent, covering the wavelength range 517-938 nm and consisting ofChen, Guo et al.
Fecha de publicación:
52021 -
A transmission spectrum of the planet candidate WD 1856+534 b and a lower limit to its massThe cool white dwarf WD 1856+534 was found to be transited by a Jupiter-sized object with a mass at or below 14 M Jup. We used the GTC telescope to obtain and analyse the photometry and low-resolution spectroscopy of six transits of WD 1856+534 b, with the intention of deriving the slope of the transmission spectrum. Such a slope, assuming a cloudAlonso, R. et al.
Fecha de publicación:
52021 -
The CARMENES search for exoplanets around M dwarfs. No evidence for a super-Earth in a 2-day orbit around GJ 1151Context. The interaction between Earth-like exoplanets and the magnetic field of low-mass host stars are considered to produce weak emission signals at radio frequencies. A study using LOFAR data announced the detection of radio emission from the mid M-type dwarf GJ 1151 that could potentially arise from a close-in terrestrial planet. Recently, theRibas, I. et al.
Fecha de publicación:
52021 -
A transit timing variation observed for the long-period extremely low-density exoplanet HIP 41378 fHIP 41378 f is a temperate 9.2 ± 0.1 R ⊕ planet with period of 542.08 d and an extremely low density of 0.09 ± 0.02 g cm -3. It transits the bright star HIP 41378 (V = 8.93), making it an exciting target for atmospheric characterization including transmission spectroscopy. HIP 41378 was monitored photometrically between the dates of 2019 NovemberBryant, Edward M. et al.
Fecha de publicación:
62021 -
Six transiting planets and a chain of Laplace resonances in TOI-178Determining the architecture of multi-planetary systems is one of the cornerstones of understanding planet formation and evolution. Resonant systems are especially important as the fragility of their orbital configuration ensures that no significant scattering or collisional event has taken place since the earliest formation phase when the parentLeleu, A. et al.
Fecha de publicación:
52021 -
Evidence of energy-, recombination-, and photon-limited escape regimes in giant planet H/He atmospheresHydrodynamic escape is the most efficient atmospheric mechanism of planetary mass loss and has a large impact on planetary evolution. Three hydrodynamic escape regimes have been identified theoretically: energy-limited, recombination-limited, and photon-limited. However, no evidence of these regimes had been reported until now. Here, we reportLampón, M. et al.
Fecha de publicación:
42021 -
Transient-optimized real-bogus classification with Bayesian convolutional neural networks - sifting the GOTO candidate streamLarge-scale sky surveys have played a transformative role in our understanding of astrophysical transients, only made possible by increasingly powerful machine learning-based filtering to accurately sift through the vast quantities of incoming data generated. In this paper, we present a new real-bogus classifier based on a Bayesian convolutionalKillestein, T. L. et al.
Fecha de publicación:
52021 -
A sub-Neptune and a non-transiting Neptune-mass companion unveiled by ESPRESSO around the bright late-F dwarf HD 5278 (TOI-130)Context. Transiting sub-Neptune-type planets, with radii approximately between 2 and 4 R ⊕, are of particular interest as their study allows us to gain insight into the formation and evolution of a class of planets that are not found in our Solar System. Aims: We exploit the extreme radial velocity (RV) precision of the ultra-stable echelleSozzetti, A. et al.
Fecha de publicación:
42021 -
Exploring the planetary-mass population in the Upper Scorpius associationWe aim at identifying very low-mass isolated planetary-mass member candidates in the nearest OB association to the Sun, Upper Scorpius (USco) (145 pc; 5-10 Myr), to constrain the form and shape of the luminosity function and mass spectrum in this regime. We conducted a deep multiband (Y = 21.2, J = 20.5, Z = 22.0 mag) photometric survey of 6 deg 2Lodieu, N. et al.
Fecha de publicación:
52021 -
TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full-frame ImagesWe present the discovery and characterization of five hot and warm Jupiters—TOI-628 b (TIC 281408474; HD 288842), TOI-640 b (TIC 147977348), TOI-1333 b (TIC 395171208, BD+47 3521A), TOI-1478 b (TIC 409794137), and TOI-1601 b (TIC 139375960)—based on data from NASA's Transiting Exoplanet Survey Satellite (TESS). The five planets were identified fromRodriguez, Joseph E. et al.
Fecha de publicación:
42021 -
Modelling the He I triplet absorption at 10 830 Å in the atmospheres of HD 189733 b and GJ 3470 bCharacterising the atmospheres of exoplanets is key to understanding their nature and provides hints about their formation and evolution. High resolution measurements of the helium triplet absorption of highly irradiated planets have been recently reported, which provide a new means of studying their atmospheric escape. In this work we study theLampón, M. et al.
Fecha de publicación:
32021
