The Jet/Counterjet Symmetry of the HH 212 Outflow - BV FAPESP
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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The Jet/Counterjet Symmetry of the HH 212 Outflow

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Author(s):
A. Noriega-Crespo [1] ; A. C. Raga [2] ; V. Lora [3] ; J. C. Rodríguez-Ramírez [4]
Total Authors: 4
Affiliation:
[1] Space Telescope Science Institute - Estados Unidos
[2] Universidad Nacional Autónoma de México. Instituto de Ciencias Nucleares - México
[3] Universidad Nacional Autónoma de México. Instituto de Radioastronomía y Astrofísica Teórica - México
[4] Universidade de São Paulo - Brasil
Total Affiliations: 4
Document type: Journal article
Source: REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA; v. 56, n. 1, p. 29-38, 2021-03-19.
Abstract

ABSTRACT We present Spitzer (IRAC) images and a VLT 2.1 μm image of the HH 212 outow. We find that this outow has a strong symmetry, with jet/counterjet knot pairs with ∆x < 1´´ position offsets. We deduce that the jet/counterjet knots are ejected with time differences ∆τ0 ≈ 6 yr and velocity differences ∆τ0 ≈ 2 km s-1. We also analyze the deviations of the knot positions perpendicular to the outow axis, and interpret them in terms of a binary orbital motion of the outow source. Through this model, we deduce a ≈ 0:7 Mʘ mass for the outow source, and a separation of ≈ 80 AU between the components of the binary (assuming equal masses for the two components). Finally, using the IRAC data and the VLT 2.1 μm image we measure the proper motion velocities, obtaining values from 50 to 170 km s-1. (AU)

FAPESP's process: 17/12188-5 - Study of relativistic particles and high energy emissions around black hole and jet sources through MHD, particle-in-cell (PIC) and radiative transfer
Grantee:Juan Carlos Rodríguez Ramírez
Support Opportunities: Scholarships in Brazil - Post-Doctoral