Searching for Extragalactic Exoplanets: A Survey of the Sagittarius Dwarf Galaxy Stream with TESS

The Astronomical Journal 2026 Open access

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Authors: William J. Schap, Jason Dittmann, Elizabeth Lada
DOI: 10.3847/1538-3881/ae4345
Cited by: 1
References: 84

Abstract

Abstract To date no confirmed exoplanets have been detected outside the Milky Way, and their extragalactic occurrence rates are poorly constrained. Using available data from TESS, we perform the first transit survey of the Sagittarius dwarf galaxy stream using 15,176 main-sequence stars identified as likely members. We calculate an upper limit of

Fields of Study & Subjects

Stellar planetary and galactic studies Galaxies: Formation Evolution Phenomena Astronomy and Astrophysical Research

Publication details

Journal / source
The Astronomical Journal
Publisher
American Astronomical Society
Volume
171
Issue
5
Pages
273–273
Publication date
7 April 2026
Language
EN