Direct measurement of ISM proper motion with image registration

Abstract

To date, quantification of the on-sky motion for interstellar clouds have relied on proxies such as young stellar objects (YSO) and masers. We present the first direct measurement of an interstellar cloud proper motion using the VISTA Star Formation Atlas (VISIONS) multi-epoch infrared images of the Corona Australis star-forming region. Proper motions are extracted by tracking the morphology of extended structures in the cloud complex based on image registration techniques implemented in SimpleITK. Our determined values (${\mu }_{{\alpha }^{\ast }}\sim +15$ mas/yr, ${\mu }_{\delta }\sim -30$ mas/yr) are in good agreement with those obtained for YSOs and young stellar clusters in the region. This study demonstrates the potential of image registration for directly mapping the kinematics of nearby molecular clouds, opening a new window into the study of cloud dynamics.

7 pages, 5 figures, 1 table, accepted for publication in Astronomy & Astrophysics

References in corpus (18)

• Gaia Data Release 3: Summary of the content and survey properties
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• The James Webb Space Telescope
• Trigonometric Parallaxes Of High-Mass Star Forming Regions: Our View Of The Milky Way
• Euclid. I. Overview of the Euclid mission
• A Classification Scheme for Young Stellar Objects Using the WIDE-FIELD INFRARED SURVEY EXPLORER AllWISE Catalog: Revealing Low-Density Star Formation in the Outer Galaxy
• Significance Mode Analysis (SigMA) for hierarchical structures. An application to the Sco-Cen OB association
• Photometry and astrometry with JWST -- I. NIRCam Point Spread Functions and the first JWST colour-magnitude diagrams of a globular cluster
• Corona-Australis DANCe. I. Revisiting the census of stars with Gaia-DR2 data
• Near-infrared, IFU spectroscopy unravels the bow-shock HH99B
• Centimeter Imaging of the R Coronae Australis Region
• Proper motions of collimated jets from intermediate-mass protostars in the Carina Nebula
• The Corona Australis star formation complex is accelerating away from the Galactic plane
• A 3D View of Orion: I. Barnard's Loop
• The physical properties of Cluster Chains
• VISIONS: The VISTA Star Formation Atlas -- I. Survey overview
• Collision of protostellar jets in the star-forming region IC 1396N. Analysis of knot proper motions
• VISIONS: The VISTA Star Formation Atlas -- II. The data processing pipeline