A nearby transiting rocky exoplanet that is suitable for atmospheric investigation

  title={A nearby transiting rocky exoplanet that is suitable for atmospheric investigation},
  author={Trifon Trifonov and Jos{\'e} A. Caballero and J. C. Morales and Andreas Seifahrt and Ignasi Ribas and Ansgar Reiners and Jacob L. Bean and Rafael Luque and Hannu Parviainen and Enric Pall{\'e} and Stephan Stock and Mathias Zechmeister and Pedro J. Amado and Guillem Anglada-Escud{\'e} and M. Azzaro and Thomas Barclay and V. J. S. B{\'e}jar and P. Bluhm and N. Casasayas-Barris and Carlos Cifuentes and Karen A. Collins and Kevin I. Collins and M. Cort{\'e}s-Contreras and Jerome P. de Leon and Stefan Dreizler and Courtney D. Dressing and Emma Esparza-Borges and N{\'e}stor Espinoza and Michael M. Fausnaugh and A. Fukui and A. P. Hatzes and Coel Hellier and Th. Henning and Christopher E. Henze and E. Herrero and S. V. Jeffers and Jon M. Jenkins and Eric L. N. Jensen and A. Kaminski and David H. Kasper and D. Kossakowski and Martin K{\"u}rster and Marina Lafarga and David W. Latham and Andrew W. Mann and Karan Molaverdikhani and David Montes and Benjamin T. Montet and Felipe Murgas and Norio Narita and Mahmoudreza Oshagh and V. M. Passegger and Don Pollacco and Samuel N. Quinn and Andreas Quirrenbach and George R. Ricker and C. Rodr{\'i}guez L{\'o}pez and Jorge Sanz-Forcada and Richard P. Schwarz and A. Schweitzer and Sara Seager and Avi Shporer and Monika Stangret and Julian St{\"u}rmer and T. G. Tan and Peter Tenenbaum and Joseph D. Twicken and Roland K. Vanderspek and Joshua N. Winn},
  pages={1038 - 1041}
A transiting rocky planet 8 parsecs away Most exoplanets have been detected using either the radial velocity (RV) method or the transit method, which provide only limited information on the planet's physical properties. In the rare cases in which both methods detect the same planet, the combination determines the planet's mass, radius, and density. Trifonov et al. identified a planet, Gliese 486 b, using both RV and transit data. The host star is a red dwarf only 8 parsecs away, making this one… 
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
A Second Planet Transiting LTT 1445A and a Determination of the Masses of Both Worlds
LTT 1445 is a hierarchical triple M-dwarf star system located at a distance of 6.86 pc. The primary star LTT 1445A (0.257 M ⊙) is known to host the transiting planet LTT 1445Ab with an orbital period
The LHS 1678 System: Two Earth-sized Transiting Planets and an Astrometric Companion Orbiting an M Dwarf Near the Convective Boundary at 20 pc
We present the Transiting Exoplanet Survey Satellite (TESS) discovery of the LHS 1678 (TOI-696) exoplanet system, comprised of two approximately Earth-sized transiting planets and a likely
The Featureless HST/WFC3 Transmission Spectrum of the Rocky Exoplanet GJ 1132b: No Evidence for a Cloud-free Primordial Atmosphere and Constraints on Starspot Contamination
Orbiting an M dwarf 12 pc away, the transiting exoplanet GJ 1132b is a prime target for transmission spectroscopy. With a mass of 1.7 M ⊕ and radius of 1.1 R ⊕, GJ 1132b’s bulk density indicates that
TOI-1842b: A Transiting Warm Saturn Undergoing Reinflation around an Evolving Subgiant
The imminent launch of space telescopes designed to probe the atmospheres of exoplanets has prompted new efforts to prioritize the thousands of transiting planet candidates for follow-up
Validation of 13 Hot and Potentially Terrestrial TESS Planets
The James Webb Space Telescope will be able to probe the atmospheres and surface properties of hot, terrestrial planets via emission spectroscopy. We identify 18 potentially terrestrial planet
A More Precise Mass for GJ 1214 b and the Frequency of Multiplanet Systems Around Mid-M Dwarfs
We present an intensive effort to refine the mass and orbit of the enveloped terrestrial planet GJ 1214 b using 165 radial velocity (RV) measurements taken with the HARPS spectrograph over a period
Redox Hysteresis of Super-Earth Exoplanets from Magma Ocean Circulation
Internal redox reactions may irreversibly alter the mantle composition and volatile inventory of terrestrial and super-Earth exoplanets and affect the prospects for atmospheric observations. The
On-sky commissioning of MAROON-X: a new precision radial velocity spectrograph for Gemini North
MAROON-X is a fiber-fed, red-optical, high precision radial velocity spectrograph recently commissioned at the Gemini North telescope on Mauna Kea, Hawai’i. With a resolving power of 85,000 and a
Solar System Planets and Exoplanets
  • J. Bevelacqua
  • Geology, Physics
    Solar System Planets and Exoplanets
  • 2021
Solar System planets have been studied for centuries, but the observation of exoplanets is only a few decades old. Consequently, knowledge of exoplanets is considerably more limited than Solar System


TESS Discovery of a Transiting Super-Earth in the pi Mensae System
The detection of a transiting planet around π Men (HD 39091), using data from the Transiting Exoplanet Survey Satellite (TESS), is reported, confirming the existence of the planet and leading to a mass determination of 4.82±0.85 M ⊕.
Identifying Atmospheres on Rocky Exoplanets through Inferred High Albedo
The upcoming launch of the James Webb Space Telescope means that we will soon have the capability to characterize the atmospheres of rocky exoplanets. However, it is still unknown whether such
Absence of a thick atmosphere on the terrestrial exoplanet LHS 3844b
Results support theoretical predictions that hot terrestrial planets orbiting small stars may not retain substantial atmospheres, and are well fitted by a bare-rock model with a low Bond albedo.
A candidate super-Earth planet orbiting near the snow line of Barnard’s star
Analysis of 20 years of observations of Barnard’s star from seven facilities reveals a signal with a period of 233 days that is indicative of a companion planet, and a long-term modulation that could arise from a stellar magnetic-activity cycle or from a more distant planetary object is revealed.
Planetary system around the nearby M dwarf GJ 357 including a transiting, hot, Earth-sized planet optimal for atmospheric characterization
We report the detection of a transiting Earth-size planet around GJ 357, a nearby M2.5 V star, using data from the Transiting Exoplanet Survey Satellite (TESS). GJ 357 b (TOI-562.01) is a transiting,
Catalog for the ESPRESSO blind radial velocity exoplanet survey
Aims. One of the main scientific drivers for ESPRESSO, Échelle SPectrograph, is the detection and characterization of Earth-class exoplanets. With this goal in mind, the ESPRESSO guaranteed time
Masses and radii for the three super-Earths orbiting GJ 9827, and implications for the composition of small exoplanets
Super-Earths belong to a class of planet not found in the Solar System, but which appear common in the Galaxy. Given that some super-Earths are rocky, while others retain substantial atmospheres,
The LCES HIRES/Keck Precision Radial Velocity Exoplanet Survey
We describe a 20 year survey carried out by the Lick-Carnegie Exoplanet Survey Team (LCES), using precision radial velocities from HIRES on the Keck I telescope to find and characterize extrasolar
An asteroseismic view of the radius valley: stripped cores, not born rocky
Various theoretical models treating the effect of stellar irradiation on planetary envelopes predict the presence of a radius valley, i.e. a bimodal distribution of planet radii, with super-Earths
The HARPS-N Rocky Planet Search. I. HD 219134 b: A transiting rocky planet in a multi-planet system at 6.5 pc from the Sun
We present here the detection of a system of four low-mass planets around the bright (V=5.5) and close-by (6.5 pc) star HD219134. This is the first result of the Rocky Planet Search program with