The recent star formation histories of nearby galaxies on resolved scales

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A90106%2F24%3A00617523" target="_blank" >RIV/67985815:90106/24:00617523 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1093/mnras/stae1168" target="_blank" >https://doi.org/10.1093/mnras/stae1168</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stae1168" target="_blank" >10.1093/mnras/stae1168</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The recent star formation histories of nearby galaxies on resolved scales

Popis výsledku v původním jazyce

Star formation histories (SFHs) of galaxies are affected by a variety of factors, both external (field versus cluster/group) and internal [presence of a bar and active galactic nucleus (AGN), morphological type]. In this work, we extend our previous study and apply the < SFR5 >/< SFR200 > metric to a sample of 11 nearby galaxies with Multi-Unit Spectroscopic Explorer observations. Based on a combination of H alpha and ultraviolet photometry,< SFR5 >/< SFR200 > is sensitive to star formation time-scales of similar to 5-200 Myr and therefore measures the present-day rate of change in the star formation rate (SFR), dSFR/dt. Within this limited galaxy sample, we do not observe systematic variations between the global value of < SFR5 >/< SFR200 > and the presence of an AGN, stellar bar, or group or cluster membership. Within some of the individual galaxies, we, however, observe significant differences in < SFR5 >/< SFR200 > between the arm and interarm regions. In half of the galaxies, the recent SFH of both arm and interarm regions has been very similar. However, in the galaxies with higher bulge-to-total light ratios and earlier morphological type, the SFR is declining more rapidly in the interarm regions. This decline in SFR is not a result of low molecular gas surface density or a decrease in the star formation efficiency, implying that other factors are responsible for this SFR decrease.

Název v anglickém jazyce

The recent star formation histories of nearby galaxies on resolved scales

Popis výsledku anglicky

Star formation histories (SFHs) of galaxies are affected by a variety of factors, both external (field versus cluster/group) and internal [presence of a bar and active galactic nucleus (AGN), morphological type]. In this work, we extend our previous study and apply the < SFR5 >/< SFR200 > metric to a sample of 11 nearby galaxies with Multi-Unit Spectroscopic Explorer observations. Based on a combination of H alpha and ultraviolet photometry,< SFR5 >/< SFR200 > is sensitive to star formation time-scales of similar to 5-200 Myr and therefore measures the present-day rate of change in the star formation rate (SFR), dSFR/dt. Within this limited galaxy sample, we do not observe systematic variations between the global value of < SFR5 >/< SFR200 > and the presence of an AGN, stellar bar, or group or cluster membership. Within some of the individual galaxies, we, however, observe significant differences in < SFR5 >/< SFR200 > between the arm and interarm regions. In half of the galaxies, the recent SFH of both arm and interarm regions has been very similar. However, in the galaxies with higher bulge-to-total light ratios and earlier morphological type, the SFR is declining more rapidly in the interarm regions. This decline in SFR is not a result of low molecular gas surface density or a decrease in the star formation efficiency, implying that other factors are responsible for this SFR decrease.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

—

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Svazek periodika

531

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

815-829

Kód UT WoS článku

001225497400002

EID výsledku v databázi Scopus

2-s2.0-85193755072