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General
ARES (Alta Resolución ESpectral) es un proyecto coordinado que pretende unificar y consolidar el esfuerzo del IAC en la investigación de alta resolución espectral. El objetivo es impulsar programas científicos frontera que el IAC desarrolla en el ámbito de la búsqueda y caracterización de exoplanetas terrestres, en evolución de las poblaciones estelares de nuestra Galaxia y en el ámbito de la cosmología y física fundamental usando espectroscopía ultraestable de alta resolución. ARES incorpora acciones específicas de gran impacto en el diseño y desarrollo de instrumentación de nueva generación para instalaciones telescópicas en el Observatorio Europeo Austral (ESO), el Observatorio del Roque de Los Muchachos, y el observatorio de Calar Alto: ESPRESSO@8.2m-VLT, HORuS@10.4m-GTC, HARPS3@2.5m-INT, NIRPS@3.6m-ESO, ANDES@39m-E-ELT, CARMENES@3.5m-CalarAlto, y HRS@10.4m-GTC. El proyecto ARES permitirá realizar aportaciones técnicas y acceder a una explotación científica garantizada en : (a) ESPRESSO: permitirá, entre otros casos científicos, la detección y caracterización de planetas de tipo terrestre en zona habitable alrededor de estrellas de tipo GKM cercanas del hemisferio sur. (b) HORuS: caracterizará la química de las estrellas más primitivas de la Vía Láctea. . (c) NIRPS: será particularmente eficiente en la detección y caracterización de planetas de baja masa en órbita alrededor de estrellas más frías de tipo M en el hemisferio sur. El IAC está desarrollando el diseño del haz de fibras. (d) HARPS3: se concentrará en sistemas estrella-planeta análogos al sistema Sol-Tierra. El IAC está llevando a cabo el diseño de las habitaciones de aislamiento térmico del espectrógrafo. (e) ANDES: estudiará, entre otros casos científicos, las atmósferas de exoplanetas desde Neptunos a Tierras, incluyendo aquellos en zona habitable, con el objetivo de detectar señales de vida en planetas rocosos. El IAC participa en la fase A del diseño del brazo visible de este espectrógrafo y en el haz de fibras del instrumento. (f) CARMENES: buscará planetas de baja masa orbitando estrellas de tipo M del hemisferio norte, con el objetivo de encontrar planetas de tipo terrestre en zona de habitabilidad. (g) HRS: seguimiento del desarrollo del espectrógrafo de alta resolución y estabilidad para el telescopio GTC previsto para los próximos años.
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Publicaciones relacionadas
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The 6Li/7Li isotopic ratio in the metal-poor binary CS22876-032Aims: We present high-resolution and high-quality UVES spectroscopic data of the metal-poor double-lined spectroscopic binary CS 22876-032 ([Fe/H] approximately -3.7 dex). Our goal is to derive the 6Li/7Li isotopic ratio by analysing the Li I λ 670.8 nm doublet. Methods: We co-added all 28 useful spectra normalised and corrected for radial velocityGonzález Hernández, J. I. et al.
Fecha de publicación:
82019 -
STEPAR: an automatic code to infer stellar atmospheric parametersContext. STEPAR is an automatic code written in Python 3.X designed to compute the stellar atmospheric parameters Teff, log g, [Fe/H], and ξ of FGK-type stars by means of the equivalent width (EW) method. This code has already been extensively tested in different spectroscopic studies of FGK-type stars with several spectrographs and againstTabernero, H. M. et al.
Fecha de publicación:
82019 -
Stellar activity analysis of Barnard's Star: very slow rotation and evidence for long-term activity cycleThe search for Earth-like planets around late-type stars using ultrastable spectrographs requires a very precise characterization of the stellar activity and the magnetic cycle of the star, since these phenomena induce radial velocity (RV) signals that can be misinterpreted as planetary signals. Among the nearby stars, we have selected Barnard'sToledo-Padrón, B. et al.
Fecha de publicación:
102019 -
The HADES RV programme with HARPS-N at TNG. XI. GJ 685 b: a warm super-Earth around an active M dwarfContext. Small rocky planets seem to be very abundant around low-mass M-type stars. Their actual planetary population is however not yet precisely understood. Currently, several surveys aim to expand the statistics with intensive detection campaigns, both photometric and spectroscopic. Aims: The HADES program aims to improve the current statisticsPinamonti, M. et al.
Fecha de publicación:
52019 -
Gliese 49: activity evolution and detection of a super-Earth. A HADES and CARMENES collaborationContext. Small planets around low-mass stars often show orbital periods in a range that corresponds to the temperate zones of their host stars which are therefore of prime interest for planet searches. Surface phenomena such as spots and faculae create periodic signals in radial velocities and in observational activity tracers in the same range, soPerger, M. et al.
Fecha de publicación:
42019 -
High-resolution spectroscopy of Boyajian's star during optical dimming eventsBoyajian's star is an apparently normal main-sequence F-type star with a very unusual light curve. The dipping activity of the star, discovered during the Kepler mission, presents deep, asymmetric, and aperiodic events. Here we present high-resolution spectroscopic follow-up during some dimming events recorded post-Kepler observations, from groundMartínez González, M. J. et al.
Fecha de publicación:
62019 -
HADES RV program with HARPS-N at the TNG. IX. A super-Earth around the M dwarf Gl 686Aims: The HArps-n red Dwarf Exoplanet Survey (HADES) is providing a major contribution to the widening of the current statistics of low-mass planets, through the in-depth analysis of precise radial-velocity (RV) measurements in a narrow range of spectral sub-types. Using the HARPS-N spectrograph we reach the precision needed to detect small planetsAffer, L. et al.
Fecha de publicación:
22019 -
Tracing the formation of the Milky Way through ultra metal-poor starsWe use Gaia DR2 astrometric and photometric data, published radial velocities and MESA models to infer distances, orbits, surface gravities, and effective temperatures for all ultra metal-poor stars ([Fe/H] -4.0 dex) available in the literature. Assuming that these stars are old (> 11 Gyr) and that they are expected to belong to the Milky Way haloSestito, F. et al.
Fecha de publicación:
42019 -
Tycho's Supernova: The View from GaiaSN 1572 (Tycho Brahe’s supernova) clearly belongs to the Ia (thermonuclear) type. It was produced by the explosion of a white dwarf (WD) in a binary system. Its remnant has been the first of this type to be explored in search of a possible surviving companion, the mass donor that brought the WD to the point of explosion. A high peculiar motion withRuiz-Lapuente, P. et al.
Fecha de publicación:
12019 -
A candidate super-Earth planet orbiting near the snow line of Barnard's starBarnard's star is a red dwarf, and has the largest proper motion (apparent motion across the sky) of all known stars. At a distance of 1.8 parsecs1, it is the closest single star to the Sun; only the three stars in the α Centauri system are closer. Barnard's star is also among the least magnetically active red dwarfs known2,3 and has an estimatedRibas, I. et al.
Fecha de publicación:
112018 -
The first super-Earth detection from the high cadence and high radial velocity precision Dharma Planet SurveyThe Dharma Planet Survey (DPS) aims to monitor about 150 nearby very bright FGKM dwarfs (within 50 pc) during 2016-2020 for low-mass planet detection and characterization using the TOU very high resolution optical spectrograph (R ≈ 100 000, 380-900 nm). TOU was initially mounted to the 2-m Automatic Spectroscopic Telescope at Fairborn ObservatoryMa, Bo et al.
Fecha de publicación:
102018 -
Calibrating the metallicity of M dwarfs in wide physical binaries with F-, G-, and K-primaries - I: High-resolution spectroscopy with HERMES: stellar parameters, abundances, and kinematicsWe investigated almost 500 stars distributed among 193 binary or multiple systems made of late-F, G-, or early-K-primaries and late-K- or M-dwarf companion candidates. For all of them, we compiled or measured coordinates, J-band magnitudes, spectral types, distances, and proper motions. With these data, we established a sample of 192 physicallyMontes, D. et al.
Fecha de publicación:
92018 -
The CARMENES search for exoplanets around M dwarfs. High-resolution optical and near-infrared spectroscopy of 324 survey starsThe CARMENES radial velocity (RV) survey is observing 324 M dwarfs to search for any orbiting planets. In this paper, we present the survey sample by publishing one CARMENES spectrum for each M dwarf. These spectra cover the wavelength range 520-1710 nm at a resolution of at least R >80 000, and we measure its RV, Hα emission, and projectedReiners, A. et al.
Fecha de publicación:
42018