Hα emission and H II regions at the locations of recent supernovae in nearby galaxies

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A90106%2F24%3A00616889" target="_blank" >RIV/67985815:90106/24:00616889 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3847/1538-3881/ad3fb7" target="_blank" >https://doi.org/10.3847/1538-3881/ad3fb7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-3881/ad3fb7" target="_blank" >10.3847/1538-3881/ad3fb7</a>

Result language

angličtina

Original language name

Hα emission and H II regions at the locations of recent supernovae in nearby galaxies

Original language description

We present a statistical analysis of the local, approximate to 50-100 pc scale, H alpha emission at the locations of recent (<= 125 yr) supernovae (SNe) in nearby star-forming galaxies. Our sample consists of 32 SNe in 10 galaxies that are targets of the PHANGS-MUSE survey. We find that 41% (13/32) of these SNe occur coincident with a previously identified H ii region. For comparison, H ii regions cover 32% of the area within +/- 1 kpc of any recent SN. Contrasting this local covering fraction with the fraction of SNe coincident with H ii regions, we find a statistical excess of 7.6% +/- 8.7% of all SNe to be associated with H ii regions. This increases to an excess of 19.2% +/- 10.4% when considering only core-collapse SNe (CCSNe). These estimates appear to be in good agreement with qualitative results from new, higher-resolution Hubble Space Telescope H alpha imaging, which also suggests many CCSNe detonate near but not in H ii regions. Our results appear consistent with the expectation that only a modest fraction of stars explode during the first less than or similar to 5 Myr of the life of a stellar population when H alpha emission is expected to be bright. Of the H ii region associated SNe, 85% (11/13) also have associated detected CO (2-1) emission, indicating the presence of molecular gas. The SNe associated with H ii regions have typical extinctions of A(V) similar to 1 mag, consistent with a significant amount of pre-clearing of gas from the region before the SNe explode.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

—

Continuities

—

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astronomical Journal

ISSN

0004-6256

e-ISSN

1538-3881

Volume of the periodical

168

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

28

Pages from-to

5

UT code for WoS article

001251199000001

EID of the result in the Scopus database

2-s2.0-85199392904