A Photoionized Accretion Disk around a Young High-mass Star
Author
dc.contributor.author
Guzmán, Andres E.
Author
dc.contributor.author
Sanhueza, Patricio
Author
dc.contributor.author
Zapata, Luis
Author
dc.contributor.author
Garay Brignardello, Guido
Author
dc.contributor.author
Rodríguez, Luis Felipe
Admission date
dc.date.accessioned
2021-05-24T20:24:56Z
Available date
dc.date.available
2021-05-24T20:24:56Z
Publication date
dc.date.issued
2020
Cita de ítem
dc.identifier.citation
Astrophysical Journal Volumen: 904 Número: 1 Número de artículo: 77 Nov 2020
es_ES
Identifier
dc.identifier.other
10.3847/1538-4357/abbe09
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/179764
Abstract
dc.description.abstract
We present high spatial resolution (52 au) observations of the high-mass young stellar object (HMYSO) G345.4938+01.4677 made using the Atacama Large Millimeter/submillimeter Array. This O-type HMYSO is located at 2.38 kpc and is associated with a luminosity of 1.5 x 10(5) L circle dot. We detect circumstellar emission from the H38 beta hydrogen recombination line showing a compact structure rotating perpendicularly to the previously detected radio jet. We interpret this emission as tracing a photoionized accretion disk around the HMYSO. While this disk-like structure seems currently too small to sustain continued accretion, the data present direct observational evidence of how disks can effectively survive the photoionization feedback from young high-mass stars. We also report the detection of a low-mass young stellar object in the vicinity of the HMYSO and suggest that it forms a high-mass and low-mass star binary system.
es_ES
Patrocinador
dc.description.sponsorship
Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)
Japan Society for the Promotion of Science
Grants-in-Aid for Scientific Research (KAKENHI)
18H01259
Programa de Apoyo a Proyectos de Investigacion e Innovacion Tecnologica (PAPIIT)
IN110618
ANID
AFB 170002
CONACyT-280775