Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1

  title={Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1},
  author={Alexander J. Bohn and Matthew A. Kenworthy and Ch. Ginski and Steven Rieder and Eric E. Mamajek and Tiffany Meshkat and Mark J. Pecaut and Maddalena Reggiani and J. de Boer and Christoph U. Keller and Frans Snik and John Southworth},
  journal={arXiv: Earth and Planetary Astrophysics},
Even though tens of directly imaged companions have been discovered in the past decades, the number of directly confirmed multiplanet systems is still small. Dynamical analysis of these systems imposes important constraints on formation mechanisms of these wide-orbit companions. As part of the Young Suns Exoplanet Survey (YSES) we report the detection of a second planetary-mass companion around the 17 Myr-old, solar-type star TYC 8998-760-1 that is located in the Lower Centaurus Crux subgroup… Expand

Figures and Tables from this paper

The Second Discovery from the COCONUTS Program: A Cold Wide-orbit Exoplanet around a Young Field M Dwarf at 10.9 pc
We present the identification of the second discovery from the COol Companions ON Ultrawide orbiTS (COCONUTS) program, the COCONUTS-2 system, composed of the M3 dwarf L 34-26 and the T9 dwarf WISEPAExpand
Imaging low-mass planets within the habitable zones of nearby stars with ground-based mid-infrared imaging
Giant exoplanets on 10-100 au orbits have been directly imaged around young stars. The peak of the thermal emission from these warm young planets is in the near-infrared (∼1-5 µm), whereas mature,Expand
A Detailed Characterization of HR 8799's Debris Disk with ALMA in Band 7
The exoplanetary system of HR 8799 is one of the rare systems in which multiple planets have been directly imaged. Its architecture is strikingly similar to that of the solar system, with the fourExpand
The 13CO-rich atmosphere of a young accreting super-Jupiter.
Observations of 13CO in the atmosphere of the young, accreting super-Jupiter TYC 8998-760-1 b suggest a 12CO/13CO ratio of [Formula: see text](90% confidence), a substantial enrichment in 13C with respect to the terrestrial standard and the local interstellar value. Expand
The Effect of the Approach to Gas Disk Gravitational Instability on the Rapid Formation of Gas Giant Planets. II. Quadrupled Spatial Resolution
  • A. Boss
  • Physics
  • The Astrophysical Journal
  • 2021
Observations support the hypothesis that gas disk gravitational instability might explain the formation of massive or wide-orbit gas giant exoplanets. The situation with regard to Jupiter-massExpand
The flare-activity of 2MASS J16111534–1757214 in the upper Scorpius association
Flares are known to play an important role for the evolution of the atmospheres of young planets. In order to understand the evolution of planets, it is thus important to study the flare-activityExpand
Orbital features of distant trans-Neptunian objects induced by giant gaseous clumps
Context: The discovery of distant trans-Neptunian objects has led to heated discussions about the structure of the outer Solar System. Aims: We study the dynamical evolution of small bodies from theExpand
The mass of β Pictoris c from β Pictoris b orbital motion
Aims. We aim to demonstrate that the presence and mass of an exoplanet can now be effectively derived from the astrometry of another exoplanet. Methods. We combined previous astrometry of β PictorisExpand
Mapping the observable sky for a remote occulter working with ground-based telescopes
The Remote Occulter (Orbiting Starshade) is a proposed 100-meter class starshade working with a ground-based telescope, designed for visible-band imaging and spectroscopy of temperate planets aroundExpand
High-contrast observations of brown dwarf companion HR 2562 B with the vector Apodizing Phase Plate coronagraph
The vector Apodizing Phase Plate (vAPP) is a class of pupil plane coronagraph that enables high-contrast imaging by modifying the Point Spread Function (PSF) to create a dark hole of deep fluxExpand


The Young Suns Exoplanet Survey: Detection of a wide-orbit planetary-mass companion to a solar-type Sco-Cen member
The Young Suns Exoplanet Survey consists of a homogeneous sample of 70 young, solar-mass stars located in the Lower Centaurus-Crux subgroup of the Scorpius-Centaurus association with an average ageExpand
Direct Imaging and Spectroscopy of a Planetary-Mass Candidate Companion to a Young Solar Analog
We present Gemini near-infrared adaptive optics imaging and spectroscopy of a planetary-mass candidate companion to 1RXS J160929.1–210524, a roughly solar-mass member of the 5 Myr old Upper ScorpiusExpand
Images of a fourth planet orbiting HR 8799
The HR 8799 planetary system, with its four young giant planets and known cold/warm debris belts, is a unique laboratory in which to study the formation and evolution of giant planets at wide (>10 au) separations. Expand
Discovery of a warm, dusty giant planet around HIP 65426
Aims. The SHINE program is a high-contrast near-infrared survey of 600 young, nearby stars aimed at searching for and characterizing new planetary systems using VLT/SPHERE’s unprecedentedExpand
Spectral and orbital characterisation of the directly imaged giant planet HIP 65426 b
HIP 65426 b is a recently discovered exoplanet imaged during the course of the SPHERE-SHINE survey. Here we present new L′ and M′ observations of the planet from the NACO instrument at the VLT fromExpand
Discovery of a directly imaged disk in scattered light around the Sco-Cen member Wray 15-788
Context. Protoplanetary disks are the birth environments of planetary systems. Therefore, the study of young, circumstellar environments is essential in understanding the processes taking place inExpand
Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager
Using the Gemini Planet Imager, a Jupiter-like planet is discovered orbiting the ~20-million-year-old star 51 Eridani at a projected separation of 13 astronomical units and has a methane signature and is probably the smallest exoplanet that has been directly imaged. Expand
Direct Imaging of Multiple Planets Orbiting the Star HR 8799
High-contrast observations with the Keck and Gemini telescopes have revealed three planets orbiting the star HR 8799, with projected separations of 24, 38, and 68 astronomical units. Expand
Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70
Context. Young circumstellar disks are the birthplaces of planets. Their study is of prime interest to understand the physical and chemical conditions under which planet formation takes place. OnlyExpand
Fast spin of the young extrasolar planet β Pictoris b
The combined line profile exhibits a rotational broadening of about 25 kilometres per second, meaning that β Pictoris b spins significantly faster than any planet in the Solar System, in line with the extrapolation of the known trend in spin velocity with planet mass. Expand