| hal.structure.identifier | Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, Morelia, Michoacán 58089, México | |
| dc.contributor.author | GALVÁN-MADRID, Roberto | |
| hal.structure.identifier | Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, Morelia, Michoacán 58089, México | |
| dc.contributor.author | DÍAZ-GONZÁLEZ, Daniel | |
| hal.structure.identifier | Institut de Planétologie et d'Astrophysique de Grenoble [IPAG] | |
| dc.contributor.author | MOTTE, Frédérique | |
| hal.structure.identifier | Department of Astronomy, University of Florida, PO Box 112055, USA | |
| dc.contributor.author | GINSBURG, Adam | |
| hal.structure.identifier | SKA Observatory, Jodrell Bank, Lower Withington, Maccles eld SK11 9FT, UK | |
| dc.contributor.author | CUNNINGHAM, Nichol | |
| hal.structure.identifier | Max-Planck-Institut für Radioastronomie [MPIFR] | |
| dc.contributor.author | MENTEN, Karl | |
| hal.structure.identifier | Laboratoire de physique de l'ENS - ENS Paris [LPENS] | |
| dc.contributor.author | ARMANTE, Mélanie | |
| hal.structure.identifier | Departments of Astronomy and Chemistry, University of Virginia, Charlottesville, VA 22904, USA | |
| dc.contributor.author | BONFAND, Mélisse | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| dc.contributor.author | BRAINE, Jonathan | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| dc.contributor.author | CSENGERI, Timea | |
| hal.structure.identifier | Laboratoire de physique de l'ENS - ENS Paris [LPENS] | |
| dc.contributor.author | DELL’OVA, Pierre | |
| hal.structure.identifier | Institut de Planétologie et d'Astrophysique de Grenoble [IPAG] | |
| dc.contributor.author | LOUVET, Fabien | |
| hal.structure.identifier | Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, Morelia, Michoacán 58089, México | |
| dc.contributor.author | NONY, Thomas | |
| hal.structure.identifier | Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, Morelia, Michoacán 58089, México | |
| dc.contributor.author | RIVERA-SOTO, Rudy | |
| hal.structure.identifier | National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan | |
| dc.contributor.author | SANHUEZA, Patricio | |
| hal.structure.identifier | Departamento de Astronomía, Universidad de Concepción, Casilla 160-C, 4030000 Concepción, Chile | |
| dc.contributor.author | STUTZ, Amelia | |
| hal.structure.identifier | Max-Planck-Institut für Radioastronomie [MPIFR] | |
| dc.contributor.author | WYROWSKI, Friedrich | |
| hal.structure.identifier | Departamento de Astronomía, Universidad de Concepción, Casilla 160-C, 4030000 Concepción, Chile | |
| dc.contributor.author | ÁLVAREZ-GUTIÉRREZ, Rodrigo | |
| hal.structure.identifier | S. N. Bose National Centre for Basic Sciences, Sector-III, Salt Lake, Kolkata 700106, India | |
| dc.contributor.author | BAUG, Tapas | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| dc.contributor.author | BONTEMPS, Sylvain | |
| hal.structure.identifier | Departamento de Astronomía, Universidad de Chile, Las Condes, 7591245 Santiago, Chile | |
| dc.contributor.author | BRONFMAN, Leonardo | |
| hal.structure.identifier | Instituto Argentino de Radioastronomía (CCT-La Plata, CONICET; CICPBA), C.C. No. 5, 1894, Villa Elisa, Buenos Aires, Argentina | |
| dc.contributor.author | FERNÁNDEZ-LÓPEZ, Manuel | |
| hal.structure.identifier | Laboratoire de physique de l'ENS - ENS Paris [LPENS] | |
| dc.contributor.author | GUSDORF, Antoine | |
| hal.structure.identifier | Departamento de Astronomía, Universidad de Concepción, Casilla 160-C, 4030000 Concepción, Chile | |
| dc.contributor.author | KOLEY, Atanu | |
| dc.contributor.author | LIU, Hong-Li | |
| hal.structure.identifier | Departamento de Astronomía, Universidad de Concepción, Casilla 160-C, 4030000 Concepción, Chile | |
| dc.contributor.author | SALINAS, Javiera | |
| hal.structure.identifier | University of Arizona Department of Astronomy and Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721, USA | |
| dc.contributor.author | TOWNER, Allison | |
| hal.structure.identifier | School of Physics and Astronomy, Cardiff University, Cardiff CF24 3AA, UK | |
| dc.contributor.author | WHITWORTH, Anthony | |
| dc.date.issued | 2024-09-04 | |
| dc.description.abstractEn | Abstract We use the H41 α recombination line to create templates of the millimeter free–free emission in the ALMA-IMF continuum maps, which allows us to separate it from dust emission. This method complements spectral-index information and extrapolation from centimeter-wavelength maps. We use the derived maps to estimate the properties of up to 34 H ii regions across the ALMA-IMF protoclusters. The hydrogen ionizing photon rate Q 0 and spectral types follow the evolutionary trend proposed by Motte et al. The youngest protoclusters lack detectable ionized gas, followed by protoclusters with increasing numbers of OB stars. The total Q 0 increases from ∼10 45 s −1 to >10 49 s −1 . We used the adjacent He41 α line to measure the relative number abundances of helium, finding values consistent with the Galactic interstellar medium, although a few outliers are discussed. A search for sites of maser amplification of the H41 α line returned negative results. We looked for possible correlations between the electron densities, emission measures, and Q 0 with H ii region size D . The latter is the best correlated, with Q 0 ∝ D 2.49 ± 0.18 . This favors interpretations in which smaller ultracompact H ii regions are not necessarily the less dynamically evolved versions of larger ones but rather are ionized by less massive stars. Moderate correlations were found between the dynamical width Δ V dyn with D and Q 0 . Δ V dyn increases from about 1 to 2 times the ionized-gas sound speed. Finally, an outlier H ii region south of W43-MM2 is discussed. We suggest that this source could harbor an embedded stellar or disk wind. | |
| dc.language.iso | en | |
| dc.publisher | IOPscience | |
| dc.rights.uri | http://creativecommons.org/licenses/by/ | |
| dc.title.en | ALMA-IMF. XIV. Free–Free Templates Derived from H41α and Ionized Gas Content in 15 Massive Protoclusters | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.3847/1538-4365/ad61e6 | |
| dc.subject.hal | Planète et Univers [physics] | |
| bordeaux.journal | The Astrophysical Journal Supplement Series | |
| bordeaux.page | 15 | |
| bordeaux.volume | 274 | |
| bordeaux.issue | 1 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-04780165 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-04780165v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Astrophysical%20Journal%20Supplement%20Series&rft.date=2024-09-04&rft.volume=274&rft.issue=1&rft.spage=15&rft.epage=15&rft.au=GALV%C3%81N-MADRID,%20Roberto&D%C3%8DAZ-GONZ%C3%81LEZ,%20Daniel&MOTTE,%20Fr%C3%A9d%C3%A9rique&GINSBURG,%20Adam&CUNNINGHAM,%20Nichol&rft.genre=article | |
