The PHANGS-HST-Halpha Survey: Warm Ionized Gas Physics at High Angular resolution in Nearby GalaxieS with the Hubble Space Telescope
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2025
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| author | Chandar, Rupali Barnes, Ashley T. Thilker, David A. Caputo, Miranda Floyd, Matthew R. Leroy, Adam K. Ubeda, Leonardo Lee, Janice C. Boquien, Médéric Maschmann, Daniel Belfiore, Francesco Kreckel, Kathryn Glover, Simon C. O. Klessen, Ralf S. Groves, Brent Dale, Daniel A. Schinnerer, Eva Emsellem, Eric Rosolowsky, Erik Bigiel, Frank Blanc, Guillermo Chevance, Melanie Congiu, Enrico Egorov, Oleg V. Faesi, Chris Grasha, Kathryn Larson, Kirsten L. Lopez, Laura A. Mok, Angus Newmann, Justus Ostriker, Eve Razza, Alessandro S'anchez-Bl'azquez, Patricia Santoro, Franesco Sun, Kiayi Usero, Antonio Watkins, Elizabeth Whitmore, Bradley C. Williams, Thomas G. |
| author_facet | Chandar, Rupali Barnes, Ashley T. Thilker, David A. Caputo, Miranda Floyd, Matthew R. Leroy, Adam K. Ubeda, Leonardo Lee, Janice C. Boquien, Médéric Maschmann, Daniel Belfiore, Francesco Kreckel, Kathryn Glover, Simon C. O. Klessen, Ralf S. Groves, Brent Dale, Daniel A. Schinnerer, Eva Emsellem, Eric Rosolowsky, Erik Bigiel, Frank Blanc, Guillermo Chevance, Melanie Congiu, Enrico Egorov, Oleg V. Faesi, Chris Grasha, Kathryn Larson, Kirsten L. Lopez, Laura A. Mok, Angus Newmann, Justus Ostriker, Eve Razza, Alessandro S'anchez-Bl'azquez, Patricia Santoro, Franesco Sun, Kiayi Usero, Antonio Watkins, Elizabeth Whitmore, Bradley C. Williams, Thomas G. |
| contents | The PHANGS project is assembling a comprehensive, multi-wavelength dataset of nearby (~5-20 Mpc), massive star-forming galaxies to enable multi-phase, multi-scale investigations into the processes that drive star formation and galaxy evolution. To date, large survey programs have provided molecular gas (CO) cubes with ALMA, optical IFU spectroscopy with VLT/MUSE, high-resolution NUV--optical imaging in five broad-band filters with HST, and infrared imaging in NIRCAM+MIRI filters with JWST. Here, we present PHANGS-HST-Halpha, which has obtained high-resolution (~2-10 pc), narrow-band imaging in the F658N or F657N filters with the HST/WFC3 camera of the warm ionized gas in the first 19 nearby galaxies observed in common by all four of the PHANGS large programs. We summarize our data reduction process, with a detailed discussion of the production of flux-calibrated, Milky Way extinction corrected, continuum-subtracted Halpha maps. PHANGS-MUSE IFU spectroscopy data are used to background subtract the HST-Halpha maps, and to determine the [NII] correction factors for each galaxy. We describe our public data products and highlight a few key science cases enabled by the PHANGS-HST-Halpha observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_18791 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The PHANGS-HST-Halpha Survey: Warm Ionized Gas Physics at High Angular resolution in Nearby GalaxieS with the Hubble Space Telescope Chandar, Rupali Barnes, Ashley T. Thilker, David A. Caputo, Miranda Floyd, Matthew R. Leroy, Adam K. Ubeda, Leonardo Lee, Janice C. Boquien, Médéric Maschmann, Daniel Belfiore, Francesco Kreckel, Kathryn Glover, Simon C. O. Klessen, Ralf S. Groves, Brent Dale, Daniel A. Schinnerer, Eva Emsellem, Eric Rosolowsky, Erik Bigiel, Frank Blanc, Guillermo Chevance, Melanie Congiu, Enrico Egorov, Oleg V. Faesi, Chris Grasha, Kathryn Larson, Kirsten L. Lopez, Laura A. Mok, Angus Newmann, Justus Ostriker, Eve Razza, Alessandro S'anchez-Bl'azquez, Patricia Santoro, Franesco Sun, Kiayi Usero, Antonio Watkins, Elizabeth Whitmore, Bradley C. Williams, Thomas G. Astrophysics of Galaxies The PHANGS project is assembling a comprehensive, multi-wavelength dataset of nearby (~5-20 Mpc), massive star-forming galaxies to enable multi-phase, multi-scale investigations into the processes that drive star formation and galaxy evolution. To date, large survey programs have provided molecular gas (CO) cubes with ALMA, optical IFU spectroscopy with VLT/MUSE, high-resolution NUV--optical imaging in five broad-band filters with HST, and infrared imaging in NIRCAM+MIRI filters with JWST. Here, we present PHANGS-HST-Halpha, which has obtained high-resolution (~2-10 pc), narrow-band imaging in the F658N or F657N filters with the HST/WFC3 camera of the warm ionized gas in the first 19 nearby galaxies observed in common by all four of the PHANGS large programs. We summarize our data reduction process, with a detailed discussion of the production of flux-calibrated, Milky Way extinction corrected, continuum-subtracted Halpha maps. PHANGS-MUSE IFU spectroscopy data are used to background subtract the HST-Halpha maps, and to determine the [NII] correction factors for each galaxy. We describe our public data products and highlight a few key science cases enabled by the PHANGS-HST-Halpha observations. |
| title | The PHANGS-HST-Halpha Survey: Warm Ionized Gas Physics at High Angular resolution in Nearby GalaxieS with the Hubble Space Telescope |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2503.18791 |