Buchumschlag

The PHANGS-MUSE/HST-Halpha Nebulae Catalogue

Fuente: arXiv

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Barnes, A. T., Chandar, R., Kreckel, K., Belfiore, F., Pathak, D., Thilker, D., Leroy, A. K., Groves, B., Glover, S. C. O., McClain, R., Amiri, A., Bazzi, Z., Boquien, M., Congiu, E., Dale, D. A., Egorov, O. V., Emsellem, E., Grasha, K., Lobos, J. Gonzalez, Henny, K., He, H., Indebetouw, R., Lee, J. C., Li, J., Liang, F. -H., Larson, K., Maschmann, D., Meidt, S. E., Méndez-Delgado, J. E., Neumann, J., Pan, H. -A., Querejeta, M., Rosolowsky, E., Sarbadhicary, S. K., Scheuermann, F., Úbeda, L., Williams, T. G., Weinbeck, T. D., Whitmore, B., Wofford, A., collaboration, the PHANGS
Format:	Preprint
Veröffentlicht:	2025
Schlagworte:	Astrophysics of Galaxies
Online-Zugang:	Acceder al recurso
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

_version_	1866914304284950528
author	Barnes, A. T. Chandar, R. Kreckel, K. Belfiore, F. Pathak, D. Thilker, D. Leroy, A. K. Groves, B. Glover, S. C. O. McClain, R. Amiri, A. Bazzi, Z. Boquien, M. Congiu, E. Dale, D. A. Egorov, O. V. Emsellem, E. Grasha, K. Lobos, J. Gonzalez Henny, K. He, H. Indebetouw, R. Lee, J. C. Li, J. Liang, F. -H. Larson, K. Maschmann, D. Meidt, S. E. Méndez-Delgado, J. E. Neumann, J. Pan, H. -A. Querejeta, M. Rosolowsky, E. Sarbadhicary, S. K. Scheuermann, F. Úbeda, L. Williams, T. G. Weinbeck, T. D. Whitmore, B. Wofford, A. collaboration, the PHANGS
author_facet	Barnes, A. T. Chandar, R. Kreckel, K. Belfiore, F. Pathak, D. Thilker, D. Leroy, A. K. Groves, B. Glover, S. C. O. McClain, R. Amiri, A. Bazzi, Z. Boquien, M. Congiu, E. Dale, D. A. Egorov, O. V. Emsellem, E. Grasha, K. Lobos, J. Gonzalez Henny, K. He, H. Indebetouw, R. Lee, J. C. Li, J. Liang, F. -H. Larson, K. Maschmann, D. Meidt, S. E. Méndez-Delgado, J. E. Neumann, J. Pan, H. -A. Querejeta, M. Rosolowsky, E. Sarbadhicary, S. K. Scheuermann, F. Úbeda, L. Williams, T. G. Weinbeck, T. D. Whitmore, B. Wofford, A. collaboration, the PHANGS
contents	We present the PHANGS-MUSE/HST-Halpha nebulae catalogue, comprising 5177 spatially resolved nebulae across 19 nearby star-forming galaxies (< 20 Mpc), based on high-resolution Halpha imaging from HST, homogenised to a fixed 10 pc resolution and sensitivity. Combined with MUSE spectroscopy, this enables robust classification of 4882 H II regions and separation of planetary nebulae and supernova remnants. Electron densities for 2544 H II regions are derived using [S II] diagnostics, and nebular sizes measured via circularised radii and second moments yield a median of 20 pc, extending to sub-parsec scales. A structural complexity score traces substructure, showing that about a third of regions are H II complexes, with a higher fraction in galaxy centres. A luminosity-size relation calibrated from the HST sample is applied to 30,790 MUSE nebulae, recovering sizes down to 1 pc. Observed sizes exceed classical Stromgren radii, implying typical volume filling factors of 0.22. We associate 3349 H II regions with stellar populations from PHANGS-HST, finding median ages of 3 Myr and masses of 4-5 log(Msun). The dataset provides a detailed, spatially resolved link between nebular structure and ionising sources, serving as a benchmark for future studies of feedback, diffuse ionised gas, and star formation regulation in the interstellar medium. The full catalogue is made publicly available in machine-readable format.
format	Preprint
id	arxiv_https___arxiv_org_abs_2510_11778
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	The PHANGS-MUSE/HST-Halpha Nebulae Catalogue Barnes, A. T. Chandar, R. Kreckel, K. Belfiore, F. Pathak, D. Thilker, D. Leroy, A. K. Groves, B. Glover, S. C. O. McClain, R. Amiri, A. Bazzi, Z. Boquien, M. Congiu, E. Dale, D. A. Egorov, O. V. Emsellem, E. Grasha, K. Lobos, J. Gonzalez Henny, K. He, H. Indebetouw, R. Lee, J. C. Li, J. Liang, F. -H. Larson, K. Maschmann, D. Meidt, S. E. Méndez-Delgado, J. E. Neumann, J. Pan, H. -A. Querejeta, M. Rosolowsky, E. Sarbadhicary, S. K. Scheuermann, F. Úbeda, L. Williams, T. G. Weinbeck, T. D. Whitmore, B. Wofford, A. collaboration, the PHANGS Astrophysics of Galaxies We present the PHANGS-MUSE/HST-Halpha nebulae catalogue, comprising 5177 spatially resolved nebulae across 19 nearby star-forming galaxies (< 20 Mpc), based on high-resolution Halpha imaging from HST, homogenised to a fixed 10 pc resolution and sensitivity. Combined with MUSE spectroscopy, this enables robust classification of 4882 H II regions and separation of planetary nebulae and supernova remnants. Electron densities for 2544 H II regions are derived using [S II] diagnostics, and nebular sizes measured via circularised radii and second moments yield a median of 20 pc, extending to sub-parsec scales. A structural complexity score traces substructure, showing that about a third of regions are H II complexes, with a higher fraction in galaxy centres. A luminosity-size relation calibrated from the HST sample is applied to 30,790 MUSE nebulae, recovering sizes down to 1 pc. Observed sizes exceed classical Stromgren radii, implying typical volume filling factors of 0.22. We associate 3349 H II regions with stellar populations from PHANGS-HST, finding median ages of 3 Myr and masses of 4-5 log(Msun). The dataset provides a detailed, spatially resolved link between nebular structure and ionising sources, serving as a benchmark for future studies of feedback, diffuse ionised gas, and star formation regulation in the interstellar medium. The full catalogue is made publicly available in machine-readable format.
title	The PHANGS-MUSE/HST-Halpha Nebulae Catalogue
topic	Astrophysics of Galaxies
url	https://arxiv.org/abs/2510.11778