Distances to PHANGS Galaxies: New Tip of the Red Giant Branch Measurements and Adopted Distances
Gagandeep S. Anand, Janice C. Lee, Schuyler D. Van Dyk, Adam K. Leroy,, Erik Rosolowsky, Eva Schinnerer, Kirsten Larson, Ehsan Kourkchi, Kathryn, Kreckel, Fabian Scheuermann, Luca Rizzi, David Thilker, R. Brent Tully, Frank, Bigiel, Guillermo A. Blanc, M\'ed\'eric Boquien

TL;DR
This paper reports new tip of the red giant branch (TRGB) distance measurements for 11 nearby galaxies using PHANGS-HST data, providing crucial distance estimates for understanding galaxy properties and supporting multiwavelength studies.
Contribution
It presents the first TRGB distance measurements for five galaxies and offers the most accurate distances for eight others, enhancing the PHANGS galaxy dataset.
Findings
TRGB distances for 11 galaxies ranging from 4 to 15 Mpc.
First published TRGB distances for five galaxies.
Compilation of distances for 118 galaxies in the PHANGS sample.
Abstract
PHANGS-HST is an ultraviolet-optical imaging survey of 38 spiral galaxies within ~20 Mpc. Combined with the PHANGS-ALMA, PHANGS-MUSE surveys and other multiwavelength data, the dataset will provide an unprecedented look into the connections between young stars, HII regions, and cold molecular gas in these nearby star-forming galaxies. Accurate distances are needed to transform measured observables into physical parameters (e.g., brightness to luminosity, angular to physical sizes of molecular clouds, star clusters and associations). PHANGS-HST has obtained parallel ACS imaging of the galaxy halos in the F606W and F814W bands. Where possible, we use these parallel fields to derive tip of the red giant branch (TRGB) distances to these galaxies. In this paper, we present TRGB distances for 11 galaxies from ~4 to ~15 Mpc, based on the first year of PHANGS-HST observations. Five of these…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
