Matches in SemOpenAlex for { <https://semopenalex.org/work/W3103243329> ?p ?o ?g. }
- W3103243329 endingPage "9" @default.
- W3103243329 startingPage "9" @default.
- W3103243329 abstract "The role of gas accretion in galaxy evolution is still a matter of debate. The presence of inflows of metal-poor gas that trigger star formation bursts of low metallicity has been proposed as an explanation for the local anti-correlation between star formation rate (SFR) and gas-phase metallicity ($rm Z_g$) found in the literature. In the present study, we show how the anti-correlation is also present as part of a diversified range of behaviours for a sample of more than 700 nearby spiral galaxies from the SDSS IV MaNGA survey. We have characterized the local relation between SFR and $rm Z_g$ after subtracting the azimuthally averaged radial profiles of both quantities. $60%$ of the analyzed galaxies display a $rm SFR-Z_g$ anti-correlation, with the remaining $40%$ showing no correlation ($19%$) or positive correlation ($21%$). Applying a Random Forest machine-learning algorithm, we obtain that the slope of the correlation is mainly determined by the average gas-phase metallicity of the galaxy. Galaxy mass, $g-r$ colors, stellar age, and mass density seem to play a less significant role. This result is supported by the performed 2nd-order polynomial regression analysis. Thus, the local $rm SFR-Z_g$ slope varies with the average metallicity, with the more metal-poor galaxies presenting the lowest slopes (i.e., the strongest $rm SFR-Z_g$ anti-correlations), and reversing the relation for more metal-rich systems. Our results suggest that external gas accretion fuels star-formation in metal-poor galaxies, whereas in metal-rich systems the gas comes from previous star formation episodes." @default.
- W3103243329 created "2020-11-23" @default.
- W3103243329 creator A5005470163 @default.
- W3103243329 creator A5049491652 @default.
- W3103243329 creator A5051678250 @default.
- W3103243329 creator A5079927700 @default.
- W3103243329 creator A5083476174 @default.
- W3103243329 creator A5088808284 @default.
- W3103243329 creator A5088975764 @default.
- W3103243329 date "2019-08-26" @default.
- W3103243329 modified "2023-10-18" @default.
- W3103243329 title "Characterizing the Local Relation between Star Formation Rate and Gas-phase Metallicity in MaNGA Spiral Galaxies" @default.
- W3103243329 cites W1658947143 @default.
- W3103243329 cites W1849750451 @default.
- W3103243329 cites W1855741887 @default.
- W3103243329 cites W1857585881 @default.
- W3103243329 cites W1920334662 @default.
- W3103243329 cites W1927310234 @default.
- W3103243329 cites W1955749736 @default.
- W3103243329 cites W1965970544 @default.
- W3103243329 cites W1966867730 @default.
- W3103243329 cites W1967681399 @default.
- W3103243329 cites W1967876247 @default.
- W3103243329 cites W1973468302 @default.
- W3103243329 cites W1973782337 @default.
- W3103243329 cites W2006716028 @default.
- W3103243329 cites W2011654732 @default.
- W3103243329 cites W2013978456 @default.
- W3103243329 cites W2015295900 @default.
- W3103243329 cites W2015637674 @default.
- W3103243329 cites W2032317739 @default.
- W3103243329 cites W2052923345 @default.
- W3103243329 cites W2053646744 @default.
- W3103243329 cites W2059037849 @default.
- W3103243329 cites W2059302115 @default.
- W3103243329 cites W2063568047 @default.
- W3103243329 cites W2067857092 @default.
- W3103243329 cites W2068095952 @default.
- W3103243329 cites W2076246932 @default.
- W3103243329 cites W2089947188 @default.
- W3103243329 cites W2093868759 @default.
- W3103243329 cites W2094246362 @default.
- W3103243329 cites W2096147217 @default.
- W3103243329 cites W2100054308 @default.
- W3103243329 cites W2100816440 @default.
- W3103243329 cites W2112625578 @default.
- W3103243329 cites W2116466430 @default.
- W3103243329 cites W2119131940 @default.
- W3103243329 cites W2123055491 @default.
- W3103243329 cites W2125939105 @default.
- W3103243329 cites W2125977823 @default.
- W3103243329 cites W2128384154 @default.
- W3103243329 cites W2128886718 @default.
- W3103243329 cites W2141444467 @default.
- W3103243329 cites W2142629552 @default.
- W3103243329 cites W2150995848 @default.
- W3103243329 cites W2154157877 @default.
- W3103243329 cites W2156598558 @default.
- W3103243329 cites W2163212281 @default.
- W3103243329 cites W2163306553 @default.
- W3103243329 cites W2166365370 @default.
- W3103243329 cites W2167635287 @default.
- W3103243329 cites W2224968497 @default.
- W3103243329 cites W2233019358 @default.
- W3103243329 cites W2337172722 @default.
- W3103243329 cites W2484772434 @default.
- W3103243329 cites W2487770199 @default.
- W3103243329 cites W2515622972 @default.
- W3103243329 cites W2576195680 @default.
- W3103243329 cites W2589317285 @default.
- W3103243329 cites W2593224863 @default.
- W3103243329 cites W2604566923 @default.
- W3103243329 cites W2735395126 @default.
- W3103243329 cites W2768455873 @default.
- W3103243329 cites W2788000601 @default.
- W3103243329 cites W2809706600 @default.
- W3103243329 cites W2885939284 @default.
- W3103243329 cites W2899775349 @default.
- W3103243329 cites W2901112184 @default.
- W3103243329 cites W2901217044 @default.
- W3103243329 cites W2904516022 @default.
- W3103243329 cites W2910037168 @default.
- W3103243329 cites W2911964244 @default.
- W3103243329 cites W3037641373 @default.
- W3103243329 cites W3098294620 @default.
- W3103243329 cites W3098359849 @default.
- W3103243329 cites W3098457277 @default.
- W3103243329 cites W3098784892 @default.
- W3103243329 cites W3099142252 @default.
- W3103243329 cites W3100032906 @default.
- W3103243329 cites W3100741372 @default.
- W3103243329 cites W3101883929 @default.
- W3103243329 cites W3102010214 @default.
- W3103243329 cites W3103247671 @default.
- W3103243329 cites W3103535938 @default.
- W3103243329 cites W3104738482 @default.
- W3103243329 cites W3104911066 @default.
- W3103243329 cites W3106287917 @default.