Early Planet Formation in Embedded Disks (eDisk). X. Compact Disks, Extended Infall, and a Fossil Outburst in the Class I Oph IRS43 Binary

Author:

Narayanan SuchitraORCID,Williams Jonathan P.ORCID,Tobin John J.ORCID,Jørgensen Jes K.ORCID,Ohashi NagayoshiORCID,Lin Zhe-Yu DanielORCID,van’t Hoff Merel L. R.ORCID,Li Zhi-YunORCID,Plunkett Adele L.ORCID,Looney Leslie W.ORCID,Takakuwa ShigehisaORCID,Yen Hsi-WeiORCID,Aso YusukeORCID,Flores ChristianORCID,Lee Jeong-EunORCID,Lai Shih-PingORCID,Kwon WoojinORCID,de Gregorio-Monsalvo ItziarORCID,Sharma RajeebORCID,Lee Chang WonORCID

Abstract

Abstract We present the first results from the Early Planet Formation in Embedded Disks Atacama Large Millimeter/submillimeter Array Large Program toward Oph IRS43, a binary system of solar mass protostars. The 1.3 mm dust continuum observations resolve a compact disk, ∼6 au radius, around the northern component and show that the disk around the southern component is even smaller, ≲3 au. CO, 13CO, and C18O maps reveal a large cavity in a low-mass envelope that shows kinematic signatures of rotation and infall extending out to ∼2000 au. An expanding CO bubble centered on the extrapolated location of the source ∼130 yr ago suggests a recent outburst. Despite the small size of the disks, the overall picture is of a remarkably large and dynamically active region.

Funder

NSF

NSF GRFP

Publisher

American Astronomical Society

Subject

Space and Planetary Science,Astronomy and Astrophysics

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