A multiwavelength study of star formation in nearby galaxies: evidence for inside-out growth of the stellar disc

Author:

Smith Madison V1ORCID,van Zee L1,Dale D A2,Hunter L C1,Staudaher S3,Wrock T1

Affiliation:

1. Department of Astronomy, Indiana University , Bloomington, IN 47405, USA

2. Department of Physics & Astronomy, University of Wyoming , Laramie, WY 82071, USA

3. College of Osteopathic Medicine, Sam Houston State University , Conroe, TX 77304, USA

Abstract

ABSTRACT Global, radial, and local photometric measurements of several nearby low-mass galaxies are presented. Multiwavelength observations are used to trace the distributions of old and young stars, with the help of far-ultraviolet (FUV) to mid-infrared spectral energy distributions to derive star formation histories (SFHs). In addition to the surface brightness profiles, catalogues of UV-selected sources are created to better understand regions of galaxies with recent star formation. The clustering of these UV sources are studied in the dwarf irregular UGC 08188 (IC 4182) using a two-point correlation function. We find that the reddest of these UV sources are not clustered on any scale, but the bluer sources are clustered on scales approximately less than 1 kpc. We also find a possible negative radial gradient in the SFH parameter that marks the beginning of the younger stellar population’s formation (tburst) when analysing the entire sample of 3165 UV sources found across a total of 34 galaxies, giving quantitative evidence for the inside-out growth of galactic discs – a natural consequence of galaxy evolution in a Λ cold dark matter universe.

Funder

Indiana University

National Aeronautics and Space Administration

Indiana Space Grant Consortium

California Institute of Technology

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. A comparative study of star-forming dwarf galaxies using the UVIT;Monthly Notices of the Royal Astronomical Society;2024-03-29

2. DIISC-III. Signatures of Stellar Disk Growth in Nearby Galaxies;The Astrophysical Journal;2023-12-19

3. Resolved stellar population properties of PHANGS-MUSE galaxies;Astronomy & Astrophysics;2023-05

4. A multiwavelength study of nearby star-forming spiral galaxies and the clustering of star formation in M63;Monthly Notices of the Royal Astronomical Society;2022-08-11

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