A DWARF TRANSITIONAL PROTOPLANETARY DISK AROUND XZ TAU B

Journal Article · Fri Jul 01 04:00:00 EDT 2016 · Astrophysical Journal Letters

DOI:https://doi.org/10.3847/2041-8205/825/1/L10· OSTI ID:22654290

Osorio, Mayra; Macías, Enrique; Anglada, Guillem; Gómez, José F. ^[1]; Carrasco-González, Carlos; Galván-Madrid, Roberto; Zapata, Luis; Rodríguez, Luis F. ^[2]; Calvet, Nuria ^[3]; Nagel, Erick ^[4]; Torrelles, José M. ^[5]; Zhu, Zhaohuan ^[6]

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1. Instituto de Astrofísica de Andalucía (CSIC), Glorieta de la Astronomía s/n, E-18008 Granada (Spain)
2. Instituto de Radioastronomía y Astrofísica UNAM, Apartado Postal 3-72 (Xangari), 58089 Morelia, Michoacán (Mexico)
3. Department of Astronomy, University of Michigan, 825 Dennison Building, 500 Church Street, Ann Arbor, MI 48109 (United States)
4. Departamento de Astronomía, Universidad de Guanajuato, Guanajuato, Gto 36240 (Mexico)
5. Institut de Ciències de l’Espai (CSIC)-Institut de Ciències del Cosmos (UB)/IEEC, Martí i Franquès 1, E-08028 Barcelona (Spain)
6. Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)

We report the discovery of a dwarf protoplanetary disk around the star XZ Tau B that shows all the features of a classical transitional disk but on a much smaller scale. The disk has been imaged with the Atacama Large Millimeter/submillimeter Array (ALMA), revealing that its dust emission has a quite small radius of ∼3.4 au and presents a central cavity of ∼1.3 au in radius that we attribute to clearing by a compact system of orbiting (proto)planets. Given the very small radii involved, evolution is expected to be much faster in this disk (observable changes in a few months) than in classical disks (observable changes requiring decades) and easy to monitor with observations in the near future. From our modeling we estimate that the mass of the disk is large enough to form a compact planetary system.

• OSTI ID: 22654290
• Journal Information: Astrophysical Journal Letters, Journal Name: Astrophysical Journal Letters Journal Issue: 1 Vol. 825; ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
DUSTS
DWARF STARS
EMISSION
EVOLUTION
IMAGES
INTERACTIONS
MASS
MONITORS
PLANETS
PROTOPLANETS
SIMULATION
STARS