The Planet Formation Potential Around a 45 Myr old Accreting M Dwarf

Abstract

Debris disk detections around M dwarfs are rare, and so far no gas emission has been detected from an M dwarf debris disk. This makes the 45 Myr old M dwarf WISEJ080822.18-644357.3 a bit of a curiosity; it has a strong infrared excess at an age beyond the lifetime of a typical planet-forming disk, and also exhibits broad H$\alpha$ emission consistent with active accretion from a gaseous disk. To better understand the cold gas and dust properties of this system, we obtained ALMA observations of the 1.3mm continuum and the CO/${}^{13}$CO/C${}^{18}$O J=2-1 emission lines. No cold CO gas is detected from this system, ruling out a gas-rich protoplanetary disk. Unresolved dust continuum emission is detected at a flux of 198$\pm$15 $\mu$Jy, consistent with 0.057$\pm$0.006 M${}_{\oplus }$ worth of optically thin dust, and consistent with being generated through a collisional cascade induced by large bodies at radii $<$16 au. With a sufficiently strong stellar wind, dust grains released in the outer disk can migrate inwards via PR drag, potentially serving as a source of grains for the strong infrared excess.

arXiv comment9 pages, 4 figures, accepted to ApJ

References in corpus (92)

• Astropy: A Community Python Package for Astronomy
• Gaia Data Release 2. Summary of the contents and survey properties
• The Gaia mission
• Interstellar Dust Grains
• Gaia Data Release 2: The astrometric solution
• New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit
• Models of Stars, Brown Dwarfs and Exoplanets
• The Mass Dependence Between Protoplanetary Disks and their Stellar Hosts
• Giant Planet Occurrence in the Stellar Mass-Metallicity Plane
• The HARPS search for southern extra-solar planets XXXI. The M-dwarf sample
• The Occurrence Rate of Small Planets around Small Stars
• ALMA Survey of Lupus Protoplanetary Disks I: Dust and Gas Masses
• The photodissociation and chemistry of CO isotopologues: applications to interstellar clouds and circumstellar disks
• BANYAN. XI. The BANYAN $\Sigma$ multivariate Bayesian algorithm to identify members of young associations within 150 pc
• A self-consistent, absolute isochronal age scale for young moving groups in the solar neighbourhood
• Core-Accretion Model Predicts Few Jovian-Mass Planets Orbiting Red Dwarfs
• The MUSCLES Treasury Survey I: Motivation and Overview
• An ALMA Survey of Protoplanetary Disks in the $\sigma$ Orionis Cluster
• A New Planet Around an M Dwarf: Revealing a Correlation Between Exoplanets and Stellar Mass
• Debris Disks: Structure, Composition, and Variability
• Testing a Predictive Theoretical Model for the Mass Loss Rates of Cool Stars
• Evidence for Mass-dependent Circumstellar Disk Evolution in the 5 Myr-old Upper Scorpius OB Association
• Protoplanetary disk lifetimes vs stellar mass and possible implications for giant planet populations
• The Debris Disk Around HR 8799
• Discovery of a large dust disk around the nearby star AU Microscopium
• The Disk Population of the Upper Scorpius Association
• Molecular Gas Clumps from the Destruction of Icy Bodies in the $\beta$ Pictoris Debris Disk
• Stellar Winds on the Main-Sequence II: the Evolution of Rotation and Winds
• An Increase in the Mass of Planetary Systems around Lower-Mass Stars
• Dust Dynamics, Surface Brightness Profiles, and Thermal Spectra of Debris Disks: The Case of AU Mic
• Herbig Ae/Be Stars in nearby OB associations
• New Debris Disks Around Young, Low Mass Stars Discovered With The Spitzer Space Telescope
• Planets Around Low-Mass Stars (PALMS). IV. The Outer Architecture of M Dwarf Planetary Systems
• Circumplanetary disc properties obtained from radiation hydrodynamical simulations of gas accretion by protoplanets
• Exocometary gas in the HD 181327 debris ring
• The role of star-formation and AGN in dust heating of z = 0.3-2.8 galaxies - I. Evolution with redshift and luminosity
• Predictions for the secondary CO, C and O gas content of debris discs from the destruction of volatile-rich planetesimals
• Abundant Circumstellar Silica Dust and SiO Gas Created by a Giant Hypervelocity Collision in the ~12 Myr HD172555 System
• ALMA observations of the molecular gas in the debris disk of the 30 Myr old star HD 21997
• Detection of exocometary CO within the 440 Myr-old Fomalhaut belt: a similar CO+CO${}_2$ ice abundance in exocomets and Solar System comets
• Where Are The M Dwarf Disks Older Than 10 Million Years?
• Exploring Terrestrial Planet Formation in the TW Hydrae Association
• Debris from giant impacts between planetary embryos at large orbital radii
• Protoplanetary Disk Masses from Stars to Brown Dwarfs
• First Detection of Millimeter Dust Emission from Brown Dwarf Disks
• SONS: The JCMT legacy survey of debris discs in the submillimetre
• Modeling giant extrasolar ring systems in eclipse and the case of J1407b: sculpting by exomoons?
• Synthesizing Exoplanet Demographics from Radial Velocity and Microlensing Surveys, II: The Frequency of Planets Orbiting M Dwarfs
• Debris Disks in the Scorpius-Centaurus OB Association Resolved by ALMA
• A Sub-Millimeter Search of Nearby Young Stars for Cold Dust: Discovery of Debris Disks around Two Low-Mass Stars
• Stellar Mass Dependent Disk Dispersal
• Millimeter Emission Structure in the first ALMA Image of the AU Mic Debris Disk
• Molecular gas in debris disks around young A-type stars
• The potential for Earth-mass planet formation around brown dwarfs
• On the Gas Content and Efficiency of AGN Feedback in Low-redshift Quasars
• Large Impacts around a Solar Analog Star in the Era of Terrestrial Planet Formation
• Five steps in the evolution from protoplanetary to debris disk
• ALMA constraints on the faint millimetre source number counts and their contribution to the cosmic infrared background
• Brown dwarf disks with ALMA: evidence for truncated dust disks in Ophiuchus
• Synthesizing Exoplanet Demographics: A Single Population of Long-Period Planetary Companions to M Dwarfs Consistent with Microlensing, Radial Velocity, and Direct Imaging Surveys
• Brown dwarf disks with ALMA
• Detection of a Millimeter Flare From Proxima Centauri
• First images of debris disks around TWA 7, TWA 25, HD 35650, and HD 377
• A DEBRIS Disk Around The Planet Hosting M-star GJ581 Spatially Resolved with Herschel
• CO mass upper limits in the Fomalhaut ring - the importance of NLTE excitation in debris discs and future prospects with ALMA
• An Empirical Planetesimal Belt Radius - Stellar Luminosity Relation
• CARMA interferometric observations of 2MASS J044427+2512: the first spatially resolved observations of thermal emission of a brown dwarf disk
• An ALMA Continuum Survey of Circumstellar Disks in the Upper Scorpius OB Association
• Variability of the Infrared Excess of Extreme Debris Disks
• Planetary Collisions outside the Solar System: Time Domain Characterization of Extreme Debris Disks
• Radial Surface Density Profiles of Gas and Dust in the Debris Disk around 49 Ceti
• Dust masses of disks around 8 Brown Dwarfs and Very Low-Mass Stars in Upper Sco OB1 and Ophiuchus
• Debris Distribution in HD 95086 - A Young Analog of HR 8799
• ALMA observations of rho-Oph 102: grain growth and molecular gas in the disk around a young Brown Dwarf
• Exoplanets as probes of the winds of host stars: the case of the M dwarf GJ 436
• HAZMAT III: The UV Evolution of Mid- to Late-M Stars with GALEX
• Search for Cold Debris Disks around M-dwarfs
• Collisional modelling of the AU Microscopii debris disc
• The AU Mic Debris Disk: far-infrared and submillimeter resolved imaging
• Mass and Temperature of the TWA 7 Debris Disk
• WISE J080822.18-644357.3 - a 45 Myr-old accreting M dwarf hosting a primordial disc
• Resolving faint structures in the debris disk around TWA7
• The nearby population of M dwarfs with WISE: A search for warm circumstellar dust
• Molecular reconnaissance of the $\beta$ Pictoris gas disk with the SMA: a low HCN/(CO+CO${}_2$) outgassing ratio and predictions for future surveys
• ALMA 1.3 Millimeter Map of the HD 95086 System
• BANYAN. VIII. New Low-Mass Stars and Brown Dwarfs with Candidate Circumstellar Disks
• New disk discovered with VLT/SPHERE around the M star GSC 07396-00759
• A New M Dwarf Debris Disk Candidate in a Young Moving Group Discovered with Disk Detective
• A WISE-based search for debris discs amongst M-dwarfs in nearby, young, moving groups
• New M dwarf debris disk candidates in NGC 2547
• Evidence for accretion in a nearby, young brown dwarf
• The disk around the brown dwarf KPNO Tau 3

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