Sökning: onr:"swepub:oai:DiVA.org:su-229866" > Stellar association...
Fältnamn | Indikatorer | Metadata |
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000 | 04248naa a2200709 4500 | |
001 | oai:DiVA.org:su-229866 | |
003 | SwePub | |
008 | 240531s2023 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-2298662 URI |
024 | 7 | a https://doi.org/10.1093/mnras/stad8782 DOI |
040 | a (SwePub)su | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Scheuermann, Fabian4 aut |
245 | 1 0 | a Stellar associations powering H ii regions - I. Defining an evolutionary sequence |
264 | c 2023-03-22 | |
264 | 1 | b Oxford University Press (OUP),c 2023 |
338 | a print2 rdacarrier | |
520 | a Connecting the gas in H II regions to the underlying source of the ionizing radiation can help us constrain the physical processes of stellar feedback and how H II regions evolve over time. With PHANGS-MUSE, we detect nearly 24 000 H II regions across 19 galaxies and measure the physical properties of the ionized gas (e.g. metallicity, ionization parameter, and density). We use catalogues of multiscale stellar associations from PHANGS-HST to obtain constraints on the age of the ionizing sources. We construct a matched catalogue of 4177 H II regions that are clearly linked to a single ionizing association. A weak anticorrelation is observed between the association ages and the H a equi v alent width EW (H a), the H a/ FUV flux ratio, and the ionization parameter, log q . As all three are expected to decrease as the stellar population ages, this could indicate that we observe an evolutionary sequence. This interpretation is further supported by correlations between all three properties. Interpreting these as evolutionary tracers, we find younger nebulae to be more attenuated by dust and closer to giant molecular clouds, in line with recent models of feedback-regulated star formation. We also observe strong correlations with the local metallicity variations and all three proposed age tracers, suggestive of star formation preferentially occurring in locations of locally enhanced metallicity. Overall, EW (H a) and log q show the most consistent trends and appear to be most reliable tracers for the age of an H II region. | |
650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
653 | a H II regions | |
653 | a galaxies: ISM | |
653 | a galaxies: star clusters: general | |
700 | 1 | a Kreckel, Kathryn4 aut |
700 | 1 | a Barnes, Ashley T.4 aut |
700 | 1 | a Belfiore, Francesco4 aut |
700 | 1 | a Groves, Brent4 aut |
700 | 1 | a Hannon, Stephen4 aut |
700 | 1 | a Lee, Janice C.4 aut |
700 | 1 | a Minsley, Rebecca4 aut |
700 | 1 | a Rosolowsky, Erik4 aut |
700 | 1 | a Bigiel, Frank4 aut |
700 | 1 | a Blanc, Guillermo A.4 aut |
700 | 1 | a Boquien, Mederic4 aut |
700 | 1 | a Dale, Daniel A.4 aut |
700 | 1 | a Deger, Sinan,d 1985-u Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)side0330 |
700 | 1 | a Egorov, Oleg4 aut |
700 | 1 | a Emsellem, Eric4 aut |
700 | 1 | a Glover, Simon C. O.4 aut |
700 | 1 | a Grasha, Kathryn4 aut |
700 | 1 | a Hassani, Hamid4 aut |
700 | 1 | a Jeffreson, Sarah M. R.4 aut |
700 | 1 | a Klessen, Ralf S.4 aut |
700 | 1 | a Kruijssen, J. M. Diederik4 aut |
700 | 1 | a Larson, Kirsten L.4 aut |
700 | 1 | a Leroy, Adam K.4 aut |
700 | 1 | a Lopez, Laura A.4 aut |
700 | 1 | a Pan, Hsi-An4 aut |
700 | 1 | a Sanchez-Blazquez, Patricia4 aut |
700 | 1 | a Santoro, Francesco4 aut |
700 | 1 | a Schinnerer, Eva4 aut |
700 | 1 | a Thilker, David A.4 aut |
700 | 1 | a Whitmore, Bradley C.4 aut |
700 | 1 | a Watkins, Elizabeth J.4 aut |
700 | 1 | a Williams, Thomas G.4 aut |
710 | 2 | a Stockholms universitetb Fysikum4 org |
773 | 0 | t Monthly notices of the Royal Astronomical Societyd : Oxford University Press (OUP)g 522:2, s. 2369-2383q 522:2<2369-2383x 0035-8711x 1365-2966 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-229866 |
856 | 4 8 | u https://doi.org/10.1093/mnras/stad878 |
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