225. Rotational parallaxes

Distances can be determined to Local Group disk galaxies using the `rotational parallax'. For a system in uniform bulk rotation, equating the rotation amplitude from proper motions to that from radial velocities fixes the distance. I describe the cosmological relevance, and the current status for M31 and M33.

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2025-04-21
DOI
https://doi.org/10.5281/zenodo.15661531
Primary Topic
Astronomy and Astrophysical Research
Type
article
Field-Weighted Citation Impact
0.00
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article

225. Rotational parallaxes

Zenodo (CERN European Organization for Nuclear Research)
Astronomy and Astrophysical Research
article

225. Rotational parallaxes

article en

Abstract

Distances can be determined to Local Group disk galaxies using the `rotational parallax'. For a system in uniform bulk rotation, equating the rotation amplitude from proper motions to that from radial velocities fixes the distance. I describe the cosmological relevance, and the current status for M31 and M33.

Zenodo (CERN European Organization for Nuclear Research)
Openalex Percentile: Top 57%
Astronomy and Astrophysical Research
DOIOpen Access PDFOpenAlex
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225. Rotational parallaxes · Zenodo (CERN European Organization for Nuclear Research) (2025) | TGRS Research Map | TGRS