Work

Misaligned Disks in the Binary Protostar Irs 43

Year: 2016

Type: article

Abstract: ABSTRACT Recent high angular resolution ( ) ALMA observations of the 1.1 mm continuum and of HCO+ J = 3–2 and HCN J = 3–2 gas toward the binary protostar IRS 43 reveal multiple Keplerian disks that are significantly misaligned ( ), both in inclination and position angle and also with respect to the binary orbital plane. Each stellar component has an associated circumstellar disk while the binary is surrounded by a circumbinary disk. Together with archival VLA measurements of the stellar positions over 25 years, and assuming a circular orbit, we use our continuum measurements to determine the binary separation, , and its inclination, . The misalignment in this system suggests that turbulence has likely played a major role in the formation of IRS 43.

Source: The Astrophysical Journal Letters

DOI: 10.3847/2041-8205/830/1/l16

Authors: Christian Brinch, Jes K. Jørgensen, Michiel R. Hogerheijde, Richard P. Nelson, Oliver Gressel

Institutions: University of Copenhagen, Natural History Museum of Denmark, Leiden University, Leiden Observatory, Queen Mary University of London

Language: English

Topic: Astrophysics and Star Formation Studies

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funder: Science and Technology Facilities Council

Award: G7447046354