Exoplanets and Astrobiology

    General
    Description

    The search for life in the universe has been driven by recent discoveries of planets around other stars (known as exoplanets), becoming one of the most active fields in modern astrophysics. The growing number of new exoplanets discovered in recent years and the recent advance on the study of their atmospheres are not only providing new valuable information about its physical properties, but also allowing to constrain the properties of the Solar system's planets within a more global context. The field is approaching to the important discovery of the first potentially habitable planets and encouraging more detailed studies of them. With the launching of upcoming related satellites like JWST, CHEOPS, TESS, ARIEL and PLATO, the exoplanets field faces a bright future.

    It is for this reason that this field is aid of, and at the same time promotes, the development of increasingly sensitive and stable instrumentation for both, ground-based telescopes and space missions. Our group is particularly prepared for these two fronts. On the one hand, during the last years we have developed observational and reduction techniques of exoplanet transits data for the ORM telescopes, ours being one of the most productive groups in the exploitation of GTC. On the other hand, all ESA space missions (present and future) related to exoplanets have one or more components of the project as CoIs. Within the frame of this project, we intend that IAC researchers maintain an advantageous position regarding the operation of OSIRIS and CanariCam, first light

    GTC's instruments, and participate in the construction, commissioning and operation of new instruments such as the high resolution optical spectrograph HORUS at GTC. The exploitation of the photometry and spectroscopy of transits with LIRIS at WHT is also one of our principal interests, especially in preparation for the installation in 2015 of EMIR on the GTC .

    To summarize, the project "Exoplanets and Astrobiology" will focus on these four action lines:

    1) The characterization of atmospheric and physical properties of exoplanets (GTC, WHT, ARIEL, HARPSN, CARMENES, ESPRESSO, etc. ..)

    2) The search and confirmation of exoplanets by transits techniques (CoRoT, Kepler, K2, CHEOPS, XO, LCOGT, W FC, DISH, etc. ..)

    3) The search and confirmation of exoplanet by radial velocity techniques (HARPSN, HORUS, LCOGT, SONG, CARMENES)

    4) Astrobiology

    Principal investigator
    1. Detection of He in the atmosphere of an exoplanet from the ground, published in Science
    2. Detection of a super-earth around Barnard star, published in Nature
    3. Detection of the first TESS planets, with several papers of high relevance
    4. Discovery of Na and Halpha features in the spectrum of KELT-20b with TNG
    5. Publication of the Handbook of Exoplanets, the most extensive work of reference in the field of exoplanets. The Handbook was edited by members of our group, and includes contributions by about 300 experts worldwide, including 12 members of IAC.

    Related publications

    TOI-1846 b: a super-Earth in the radius valley orbiting a nearby M dwarf 2025MNRAS.541.3249S
    Validation of TESS Planet Candidates with Multicolor Transit Photometry and TRICERATOPS+ 2025AJ....170..148G
    Discovery of a transiting hot water-world candidate orbiting Ross 176 with TESS and CARMENES 2025A&A...700A.216G
    A transiting giant planet in orbit around a 0.2-solar-mass host star 2025NatAs...9.1031B
    The TOI-2427 system: Two close-in planets orbiting a late K-dwarf star 2025A&A...699A.185S
    GOTO065054+593624: An 8.5 mag amplitude dwarf nova identified in real time via Kilonova Seekers 2025A&A...699A...8K
    Dark skies of the slightly eccentric WASP-18 b from its optical-to-infrared dayside emission 2025A&A...699A.150D
    The ESPRESSO Redshift Drift Experiment: I. High-resolution spectra of the Lyman-α forest of QSO J052915.80-435152.0 2025A&A...699A.159T
    Eleven New Transiting Brown Dwarfs and Very-low-mass Stars from TESS 2025AJ....170...68V
    A transiting rocky super-Earth and a non-transiting sub-Neptune orbiting the M dwarf TOI-771 2025A&A...698A.223L
    A Dark, Bare Rock for TOI-1685 b from a JWST NIRSpec G395H Phase Curve 2025AJ....170...49L
    Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. VI. Confirmation of a Long-period Giant Planet Discovered with a Single TESS Transit 2025AJ....170...41E
    Retrieving day- and nightside atmospheric properties of the ultra-hot Jupiter TOI-2109b: Detection of Fe and CO emission lines and evidence for inefficient heat transport 2025A&A...698A..31C
    TOI-6478 b: a cold underdense Neptune transiting a fully convective M dwarf from the thick disc 2025MNRAS.540.1909S
    A transiting multiplanet system in the 61 Myr old association Theia 116 2025MNRAS.540..806V
    A Swarm of WASP Planets: Nine Giant Planets Identified by the WASP Survey 2025AJ....169..334S
    The eccentricity distribution of warm sub-Saturns in TESS 2025MNRAS.540.1144F
    TOI-3493 b: A planet with a Neptune-like density transiting a bright G0-type star 2025A&A...697A.169C
    HST/WFC3 constraints on the abundances of OH and FeH in the atmosphere of the ultra-hot Neptune LTT-9779 b 2025MNRAS.540..650Z
    Wide Binary Orbits Are Preferentially Aligned with the Orbits of Small Planets, but Probably Not Hot Jupiters 2025AJ....169..308C
    AT2021uey: A planetary microlensing event outside the Galactic bulge 2025A&A...697A..57B
    Tidally Heated Sub-Neptunes, Refined Planetary Compositions, and Confirmation of a Third Planet in the TOI-1266 System 2025AJ....169..292G
    Exploring the atmosphere of GJ 1132 b with CRIRES+ 2025A&A...697A..31P
    Ground-breaking exoplanet science with the ANDES spectrograph at the ELT 2025ExA....59...29P
    In-depth characterization of the Kepler-10 three-planet system with HARPS-N radial velocities and Kepler transit timing variations 2025A&A...696A.233B
    A Disintegrating Rocky Planet with Prominent Comet-like Tails around a Bright Star 2025ApJ...984L...3H
    The PLATO mission 2025ExA....59...26R
    TESS and HARPS-N unveil two planets transiting TOI-1453: A super-Earth and one of the lowest mass sub-Neptunes 2025A&A...696A..86S
    The CARMENES search for exoplanets around M dwarfs: Occurrence rates of Earth-like planets around very low-mass stars 2025A&A...696A.101K
    Vertical structure of an exoplanet's atmospheric jet stream 2025Natur.639..902S
    Searching for hot water world candidates with CHEOPS: Refining the radii and analysing the internal structures and atmospheric lifetimes of TOI-238 b and TOI-1685 b 2025A&A...696A..28E
    TOI-6508 b: A massive transiting brown dwarf orbiting a low-mass star 2025A&A...696A..44B
    A joint effort to discover and characterize two resonant mini-Neptunes around TOI-1803 with TESS, HARPS-N, and CHEOPS 2025A&A...695A.273Z
    TOI-2015 b: A sub-Neptune in strong gravitational interaction with an outer non-transiting planet 2025A&A...695A.281B
    TOI-512: Super-Earth transiting a K-type star discovered by TESS and ESPRESSO 2025A&A...695A.237R
    Constraining Atmospheric Composition from the Outflow: Helium Observations Reveal the Fundamental Properties of Two Planets Straddling the Radius Gap 2025AJ....169..204Z
    A closer look at LTT 9779b:The ESPRESSO endeavour to pierce the atmospheric veil 2025A&A...695A..26R
    The NCORES programme: precise planetary masses, null results, and insight into the planet mass distribution near the radius gap 2025MNRAS.537.3175A
    Transit-timing variations in the AU Mic system observed with CHEOPS 2025A&A...694A.137B
    TOI-5108 b and TOI 5786 b: Two transiting sub-Saturns detected and characterized with TESS, MaHPS, and SOPHIE 2025A&A...694A.143T
    Nobel laureate Didier Queloz visits the IAC and outlines the ‘next frontier’ in the search for exoplanets
    The IAC participates in a complex observation campaign to unravel the enigmatic 'Neptunian desert'
    Two IAC projects won the prestigious ERC Advanced Grants awarded by the European Research Council
    A giant planet around a tiny star
    Eccentric exoplanet reveals how hot jupiters form
    Astronomers observe differences in sunrises and sunsets on a distant world
    Astronomers discover Earth-sized exoplanet orbiting ultra-cool star
    Astronomers spot a giant planet that’s as light as cotton candy
    Eva Villaver, winner of the Spanish Geographical Society Research Award 2023
    CARMENES exoplanet hunter scientific meeting
    The densest “Neptune” ever observed
    Astronomers find Earth-sized world potentially covered in volcanoes
    CARMENES project boosts the number of known planets in the solar neighbourhood
    ESPRESSO and CARMENES discover two potentially habitable exo-Earths around a star near the Sun
    James Webb telescope reveals an exoplanet atmosphere as never seen before
    Heaviest element yet detected in an exoplanet atmosphere
    Astronomers discover a planetary system with three super-Earths and two super-Mercuries
    A study shows that “water worlds” could be as common as Earths
    Gliese 486 b: a Rosetta stone for the study of exoplanets
    Two new rocky planets in the solar neighborhood
    Astronomers discover a four-planet system with a peculiar migration process
    A sub-Earth confirmed in the planetary system of the closest star to the Sun
    Astronomers discover an ultra-light and super-fast sub-Earth orbiting a red dwarf
    Study reveals that giant planets could reach "maturity" much earlier than previously thought
    IAC80 telescope detects faint transit of exoplanet WASP-156b
    A study offers new prospects for finding life outside the Earth
    A new super-Earth detected orbiting a red dwarf star
    Astronomers discover a surprising system of six exoplanets which orbit rhythmically
    Sucessful test of new technology which should help to discover “other Earths”
    Astronomers find a nearby system of exoplanets with a potentially inhabitable world
    ESPRESSO has its first light on the four telescopes of the VLT at the same time
    SARA SEAGER: “En 10 años tendremos la capacidad de encontrar vida en un exoplaneta”