A z=0 Multi-wavelength Galaxy Synthesis I: A WISE and GALEX Atlas of Local Galaxies
| Autor: | Leroy, Adam K., Sandstrom, Karin M., Lang, Dustin, Lewis, Alexia, Salim, Samir, Behrens, Erica A., Chastenet, Jérémy, Chiang, I-Da, Gallagher, Molly J., Kessler, Sarah, Utomo, Dyas |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | The Astrophysical Journal Supplement Series, 244:24 (39pp), 2019 October |
| Druh dokumentu: | Working Paper |
| DOI: | 10.3847/1538-4365/ab3925 |
| Popis: | We present an atlas of ultraviolet and infrared images of ~15,750 local (d < 50 Mpc) galaxies, as observed by NASA's WISE and GALEX missions. These maps have matched resolution (FWHM 7.5'' and 15''), matched astrometry, and a common procedure for background removal. We demonstrate that they agree well with resolved intensity measurements and integrated photometry from previous surveys. This atlas represents the first part of a program (the z=0 Multi-wavelength Galaxy Synthesis) to create a large, uniform database of resolved measurements of gas and dust in nearby galaxies. The images and associated catalogs are publicly available at the NASA/IPAC Infrared Science Archive. This atlas allows us estimate local and integrated star formation rates (SFRs) and stellar masses (M$_\star$) across the local galaxy population in a uniform way. In the appendix, we use the population synthesis fits of Salim et al. (2016, 2018) to calibrate integrated M$_\star$ and SFR estimators based on GALEX and WISE. Because they leverage an SDSS-base training set of >100,000 galaxies, these calibrations have high precision and allow us to rigorously compare local galaxies to Sloan Digital Sky Survey results. We provide these SFR and M$_\star$ estimates for all galaxies in our sample and show that our results yield a "main sequence" of star forming galaxies comparable to previous work. We also show the distribution of intensities from resolved galaxies in NUV-to-WISE1 vs. WISE1-to-WISE3 space, which captures much of the key physics accessed by these bands. Comment: 46 pages, 27 figures, published in ApJS (https://ui.adsabs.harvard.edu/abs/2019ApJS..244...24L/abstract ). See that version for full resolution figures and machine readable tables. Go download data for your favorite nearby galaxy here: https://irsa.ipac.caltech.edu/data/WISE/z0MGS/overview.html . The appendix presents detailed analysis of translations to physical quantities |
| Databáze: | arXiv |
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