E. Rodrı́guez
A5059903532- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astronomical Observations and Instrumentation
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Geophysics and Gravity Measurements
- History and Developments in Astronomy
- Gamma-ray bursts and supernovae
- Adaptive optics and wavefront sensing
- Solar and Space Plasma Dynamics
- Astrophysics and Cosmic Phenomena
- Astrophysical Phenomena and Observations
- Dark Matter and Cosmic Phenomena
- Atmospheric Ozone and Climate
- Ionosphere and magnetosphere dynamics
- Calibration and Measurement Techniques
- Pulsars and Gravitational Waves Research
- Spacecraft and Cryogenic Technologies
- GNSS positioning and interference
- Inertial Sensor and Navigation
- Reservoir Engineering and Simulation Methods
- Neutrino Physics Research
- High-pressure geophysics and materials
- Particle physics theoretical and experimental studies
- Historical Astronomy and Related Studies
Instituto de Tecnologías en Detección y Astropartículas
2021-2025
Consejo Nacional de Investigaciones Científicas y Técnicas
2023-2025
Karlsruhe Institute of Technology
2023-2025
Comisión Nacional de Energía Atómica
2025
University of Puerto Rico System
2025
Neurology, Inc
2025
Instituto de Astrofísica de Andalucía
2015-2024
National University of General San Martín
2023-2024
Consejo Superior de Investigaciones Científicas
2004-2021
Universidad Autónoma Metropolitana
2006-2021
This paper gives an overview of the CARMENES instrument and survey that will be carried out with it during first years operation. (Calar Alto high-Resolution search for M dwarfs Exoearths Near-infrared optical Echelle Spectrographs) is a next-generation radial-velocity under construction 3.5m telescope at Calar Observatory by consortium eleven Spanish German institutions. The scientific goal project conducting 600-night exoplanet targeting ~ 300 completed instrument. consists two separate...
An extensive and up-dated list of δ Sct stars is presented here.More than 500 papers, published during the last few years, have been revised 341 new variables added to our list, six years ago.This catalogue intended be a comprehensive review on observational characteristics all known until now, including contained in earlier catalogues together with other discovered variables, covering information January 2000.In summary, 636 1149 references 182 individual notes are this list.
We present a comprehensive analysis of the properties pulsating δ Scuti and related variables based mainly on content recently published catalogue by Rodríguez et al. ([CITE], hereafter R00). In particular, primary observational such as visual amplitude, period magnitude contributions from Hipparcos, OGLE MACHO long-term monitoring projects are examined. The membership these in open clusters multiple systems is also analyzed, with special attention given to pulsators situated eclipsing...
Context. Teegarden's Star is the brightest and one of nearest ultra-cool dwarfs in solar neighbourhood. For its late spectral type (M7.0V), star shows relatively little activity a prime target for near-infrared radial velocity surveys such as CARMENES. Aims. As part CARMENES search exoplanets around M dwarfs, we obtained more than 200 radial-velocity measurements analysed them planetary signals. Methods. We find periodic variability velocities Star. also studied photometric to rule out...
Proxima could host a planet on ∼5-year orbit, which Gaia can confirm in the near future providing its exact mass.
The CARMENES instrument was conceived to deliver high-accuracy radial velocity (RV) measurements with long-term stability search for temperate rocky planets around a sample of nearby cool stars. broad wavelength coverage designed provide range stellar activity indicators assess the nature potential RV signals and valuable spectral information help characterise targets. Data Release 1 (DR1) makes public all observations obtained during guaranteed time observations, which ran from 2016 2020...
<i>Context. <i/> <i>Aims. <i/>This work presents the results obtained by CoRoT on HD 50844, only <i>δ<i/> Sct star observed in initial run (57.6 d). The aim of these observations was to investigate and characterize for first time pulsational behaviour a star, when at level precision with much better duty cycle than from ground.<i>Methods. <i/>The 140 016 datapoints were analysed using independent approaches (SigSpec software different iterative sine-wave fittings) several checks performed...
We present an analysis of the <i>δ<i/>-Scuti star HD 174936 (ID 7613) observed by CoRoT during first short run SRc01 (27 days). A total number 422 frequencies were extracted from light curve using standard prewhitening techniques. This was obtained considering a spectral significance limit sig = 10 software package SigSpec. Our oscillation frequency spectrum reveals spacing periodicity around 52 <i>μ<i/>Hz. Although modes considered here are not in asymptotic regime, comparison with stellar...
CARMENES (Calar Alto high-Resolution search for M dwarfs with Exo-earths Near-infrared and optical Echelle Spectrographs) is a next-generation instrument the 3.5m telescope at Calar Observatory, built by consortium of eleven Spanish German institutions. The consists two separate échelle spectrographs covering wavelength range from 0.55 μm to 1.7 spectral resolution R = 82, 000, fed fibers Cassegrain focus telescope. Both are housed in temperature-stabilized vacuum tanks, enable long-term 1...
Small low-mass stars are favourable targets for the detection of rocky habitable planets. In particular, planetary systems in solar neighbourhood interesting and suitable precise characterisation. The Red Dots campaigns seek to discover planets orbiting nearby stars. 2018 campaign targeted GJ 1061, which is 20$^{\rm th}$ nearest star Sun. For three consecutive months we obtained nightly, high-precision radial velocity measurements with HARPS spectrograph. We analysed these data together...
We present results from the most comprehensive radio monitoring campaign towards closest star to our Sun, Proxima Centauri. report 1.1 3.1 GHz observations with Australian Telescope Compact Array over 18 consecutive days in April 2017. detect emission Centauri for of observing sessions, which spanned $\sim$1.6 orbital periods planet b. The is stronger at low-frequency band, centered around 1.6 GHz, and consistent expected electron-cyclotron frequency known star's magnetic field intensity...
The Gl 486 system consists of a very nearby, relatively bright, weakly active M3.5 V star at just 8 pc with warm transiting rocky planet about 1.3 R_Terra and 3.0 M_Terra that is ideal for both transmission emission spectroscopy testing interior models telluric planets. To prepare future studies, we collected light curves seven new transits observed the CHEOPS space mission radial velocities obtained MAROON-X/Gemini North CARMENES/Calar Alto telescopes, together previously published...
We present the discovery of an Earth-mass planet ( M b sin i = 1.26 ± 0.21 ⊕ ) on a 15.6 d orbit relatively nearby ~ 9.6 pc) and low-mass (0.167 0.011 ⊙ M5.0 V star, Wolf 1069. Sitting at separation 0.0672 0.0014 au away from host star puts 1069 in habitable zone (HZ), receiving incident flux S 0.652 0.029 . The planetary signal was detected using telluric-corrected radial-velocity (RV) data CARMENES spectrograph, amounting to total 262 spectroscopic observations covering almost four years....
Aims. Knowledge of rotation periods ( P rot ) is important for understanding the magnetic activity and angular momentum evolution late-type stars, as well evaluating radial velocity signals potential exoplanets identifying false positives. We measured photometric spectroscopic a large sample nearby bright M dwarfs with spectral types from M0 to M9, part our continual effort fully characterize Guaranteed Time Observation programme stars CARMENES survey. Methods. analyse light curves chiefly...
The first multisite photometric campaign devoted to the rapidly oscillating mass-accreting (primary) component of Algol-type eclipsing binary system AS Eri has confirmed presence rapid pulsations with frequency 59.03116 d-1, and revealed second third oscillation modes frequencies 62.5631 d-1 61.6743 respectively. These are related 5-6 overtone oscillations among shortest periods excited in non-magnetic MS A-F stars. nearly equator-on visibility binaries help narrow range possible mode...
We report a multisite photometric campaign for the Beta Cephei star 12 Lacertae. 750 hours of high-quality differential photoelectric Stromgren, Johnson and Geneva time-series photometry were obtained with 9 telescopes during 190 nights. Our frequency analysis results in detection 23 sinusoidal signals light curves. Eleven those correspond to independent pulsation modes, remainder are combination frequencies. find some slow aperiodic variability such as that seemingly present several stars....
Extensive photometric multisite campaigns of the δ Scuti variable FG Vir are presented.For years 2003 and 2004, 926 h photometry at millimag precision level were obtained.The combinations with earlier lead to excellent frequency resolution high signal/noise.A multifrequency analysis yields 79 frequencies.This represents a new record for this type star.The modes discovered confirmed.Pulsation occurs over wide band from 5.7 44.3 c/d amplitudes 0.2 mmag or larger.Within frequencies not...
CARMENES (Calar Alto high-Resolution search for M dwarfs with Exo-earths Near-infrared and optical Echelle Spectrographs) is a next-generation instrument to be built the 3.5m telescope at Calar Observatory by consortium of Spanish German institutions. Conducting five-year exoplanet survey targeting ~ 300 stars completed an integral part project. The consists two separate spectrographs covering wavelength range from 0.52 1.7 μm spectral resolution R = 85, 000, fed fibers Cassegrain focus...
Statistical analyses from exoplanet surveys around low-mass stars indicate that super-Earth and Neptune-mass planets are more frequent than gas giants such stars, in agreement with core accretion theory of planet formation. Using precise radial velocities derived visual near-infrared spectra, we report the discovery a giant minimum mass 0.46 Jupiter masses an eccentric 204-day orbit very star GJ 3512. Dynamical models show high eccentricity is most likely explained planet-planet...