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

    Horizontal and vertical exoplanet thermal structure from a JWST spectroscopic eclipse map 2025NatAs...9.1821C
    Upper limits on atmospheric abundances of KELT-11b and WASP-69b from a retrieval approach 2025A&A...704A.161L
    Mass determination of the three long-period Neptune- and sub-Neptune-sized planets transiting TOI-282 2025A&A...704A..41B
    HARPS-N reveals a well-aligned orbit for the highly eccentric warm Jupiter TOI-4127 b 2025A&A...704A.194M
    Improved characterization of the TOI-2141 system: A dense sub-Neptune with non-transiting inner and outer companions 2025A&A...704A.174L
    Stellar Obliquities of Young Systems, Atmospheres Undergoing Contraction and Escape (SOYSAUCE): A Likely Aligned Orbit for the 3 Myr Planet TIDYE-1 b 2025ApJ...994L..55B
    Searching for Exoplanets Born Outside the Milky Way: VOYAGERS Survey Design 2025PASP..137k4404A
    An ultra-short period super-Earth and sub-Neptune spanning the Radius Valley orbiting the kinematic thick disc star TOI-2345 2025MNRAS.544.2614E
    TOI-283 b: A transiting mini-Neptune in a 17.6-day orbit discovered with TESS and ESPRESSO 2025A&A...703A.201M
    Kepler-1624b Has No Significant Transit Timing Variations 2025AJ....170..336I
    Identifying Close-in Jupiters that Arrived via Disk Migration: Evidence of Primordial Alignment, Preference of Nearby Companions and Hint of Runaway Migration 2025AJ....170..299K
    Detailed cool star flare morphology with CHEOPS and TESS (Corrigendum) 2025A&A...703C...4B
    A planetary system with a sub-Neptune planet in the habitable zone of TOI-2093 2025A&A...703A..93S
    Two warm Earth-sized exoplanets and an Earth-sized candidate in the M5V-M6V binary system TOI-2267 2025A&A...702A..85Z
    Direct Imaging Explorations for Companions from the Subaru/IRD Strategic Program II; Discovery of a Brown-dwarf Companion around a Nearby Mid-M-dwarf LSPM J1446+4633 2025AJ....170..272U
    Testing the performance of cross-correlation techniques to search for molecular features in JWST NIRSpec G395H observations of transiting exoplanets 2025MNRAS.543.3456E
    Transit timing variations in HIP 41378: CHEOPS and TESS confirm a non-transiting sixth planet in the system 2025A&A...702A.211L
    The Polar Orbit of TOI-2374 b, a Planet in the Neptunian Ridge 2025AJ....170..275Y
    TOI-1743 b, TOI-5799 b, TOI-5799 c, and TOI-6223 b: TESS discovery and validation of four super-Earth to Neptune-sized planets around M dwarfs 2025A&A...702A.209Y
    TOI-1438: A rare system with two short-period sub-Neptunes and a tentative long-period Jupiter-like planet orbiting a K0V star 2025A&A...702A..69P
    The mass of TOI-654 b: A short-period sub-Neptune transiting a mid-M dwarf 2025PASJ...77.1101I
    TOI-2322: Two transiting rocky planets close to the stellar rotation period and its first harmonic 2025A&A...702A..32H
    A high mutual inclination system around KOI-134 revealed by transit timing variations 2025NatAs...9.1317N
    Fast X-ray transient EP240315A from a Lyman-continuum-leaking galaxy at z ≈ 5 2025NatAs...9.1375L
    The CHEOPS view of HD 95338b: Refined transit parameters, and a search for exomoons 2025A&A...701A.240K
    The CARMENES search for exoplanets around M dwarfs: Occurrence rates of Earth-like planets around very low-mass stars (Corrigendum) 2025A&A...702C...3K
    The star HIP 41378 potentially misaligned with its cohort of long-period planets 2025A&A...701A.173G
    ATREIDES: I. Embarking on a trek across the exo-Neptunian landscape with the TOI-421 system 2025A&A...701A.190B
    The CARMENES search for exoplanets around M dwarfs: Revisiting the GJ 317, GJ463, and GJ 3512 systems and two newly discovered planets orbiting GJ9773 and GJ 508.2 2025A&A...700A.242M
    Multiband, Multiepoch Photometry of the Spot-crossing System TOI-3884: Refined System Geometry and Spot Properties 2025AJ....170..204M
    The TESS Grand Unified Hot Jupiter Survey. III. Thirty More Giant Planets 2025ApJS..280...30Y
    TrES-1 b: A Case Study in Detecting Secular Evolution of Exoplanet Orbits 2025AJ....170..197H
    An Aligned Sub-Neptune Revealed with MAROON-X and a Tendency Toward Alignment for Small Planets 2025AJ....170..182P
    Updated Masses for the Gas Giants in the Eight-planet Kepler-90 System Via Transit-timing Variation and Radial Velocity Observations 2025AJ....170..146S
    Geometric albedo of WASP-12 b and WASP-76 b in the CHEOPS and TESS bandpasses (Corrigendum) 2025A&A...700C...1C
    The ESPRESSO transmission spectrum of HD189733 b: Extracting the planetary sodium and lithium signatures amid stellar contamination 2025A&A...700A..41M
    The KELT-7b atmospheric thermal-inversion conundrum revisited with CHEOPS, TESS, and additional data 2025A&A...700A...5G
    Two neighbours of the ultra-short-period Earth-sized planet K2-157 b in the warm Neptunian savanna 2025A&A...699A.344C
    Three hot Jupiters transiting K-dwarfs with significant heavy element masses 2025A&A...700A.118F
    A systematic bias in template-based radial velocity extraction algorithms 2025A&A...700A..93S
    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
    Study reveals that giant planets could reach "maturity" much earlier than previously thought
    Astronomers discover an ultra-light and super-fast sub-Earth orbiting a red dwarf
    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”