The Big Sibling of AU Mic: A Cold Dust-rich Debris Disk around CP-72 2713 in the beta Pic Moving Group

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F20%3A00539660" target="_blank" >RIV/67985815:_____/20:00539660 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3847/1538-3881/ab8f98" target="_blank" >https://doi.org/10.3847/1538-3881/ab8f98</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-3881/ab8f98" target="_blank" >10.3847/1538-3881/ab8f98</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Big Sibling of AU Mic: A Cold Dust-rich Debris Disk around CP-72 2713 in the beta Pic Moving Group

Popis výsledku v původním jazyce

Analyzing Spitzer and Herschel archival measurements we identified a debris disk around the young K7/M0 star CP-72 2713. The system belongs to the 24 Myr old beta Pic moving group. Our new 1.33 mm continuum observation, obtained with the Atacama Large Millimeter/submillimeter Array 7 m array, revealed an extended dust disk with a peak radius of 140 au, probably tracing the location of the planetesimal belt in the system. The disk is outstandingly large compared to known spatially resolved debris disks and protoplanetary disks around stars of comparable masses. The dynamical excitation of the belt at this radius is found to be reconcilable with planetary stirring, while self-stirring by large planetesimals embedded in the belt can work only if these bodies form very rapidly, e.g., via pebble concentration. By analyzing the spectral energy distribution, we derived a characteristic dust temperature of 43 K and a fractional luminosity of 1.1 x 10(-3). The latter value is prominently high, we know of only four other similarly dust-rich Kuiper Belt analogs within 40 pc of the Sun.

Název v anglickém jazyce

The Big Sibling of AU Mic: A Cold Dust-rich Debris Disk around CP-72 2713 in the beta Pic Moving Group

Popis výsledku anglicky

Analyzing Spitzer and Herschel archival measurements we identified a debris disk around the young K7/M0 star CP-72 2713. The system belongs to the 24 Myr old beta Pic moving group. Our new 1.33 mm continuum observation, obtained with the Atacama Large Millimeter/submillimeter Array 7 m array, revealed an extended dust disk with a peak radius of 140 au, probably tracing the location of the planetesimal belt in the system. The disk is outstandingly large compared to known spatially resolved debris disks and protoplanetary disks around stars of comparable masses. The dynamical excitation of the belt at this radius is found to be reconcilable with planetary stirring, while self-stirring by large planetesimals embedded in the belt can work only if these bodies form very rapidly, e.g., via pebble concentration. By analyzing the spectral energy distribution, we derived a characteristic dust temperature of 43 K and a fractional luminosity of 1.1 x 10(-3). The latter value is prominently high, we know of only four other similarly dust-rich Kuiper Belt analogs within 40 pc of the Sun.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

—

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomical Journal

ISSN

1538-3881

e-ISSN

—

Svazek periodika

159

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

288

Kód UT WoS článku

000539303100001

EID výsledku v databázi Scopus

2-s2.0-85086860782