Matches in SemOpenAlex for { <https://semopenalex.org/work/W2620142666> ?p ?o ?g. }
- W2620142666 endingPage "A74" @default.
- W2620142666 startingPage "A74" @default.
- W2620142666 abstract "The star formation properties of early-type galaxies (ETGs) are currently the subject of considerable interest, particularly whether they differ from those of gas-rich spirals. We perform a systematic study of star formation in a large sample of local ETGs using polycyclic aromatic hydrocarbon (PAH) and dust emission, focusing on the galaxies' star formation rates (SFRs) and star formation efficiencies (SFEs). Our sample is composed of the 260 ETGs from the ATLAS3D survey, from which we use the cold gas measurements (HI and CO). The SFRs are estimated from stellar, PAH and dust fits to spectral energy distributions created from new AKARI measurements and literature data from WISE and 2MASS. The mid-infrared luminosities of non-CO-detected galaxies are well correlated with their stellar luminosities, showing that they trace (circum)stellar dust emission. CO-detected galaxies show an excess above these correlations, uncorrelated with their stellar luminosities, indicating that they likely contain PAHs and dust of interstellar origin. PAH and dust luminosities of CO-detected galaxies show tight correlations with their molecular gas masses, and the derived current SFRs are typically 0.01-1 Msun/yr. These SFRs systematically decrease with stellar age at fixed stellar mass, while they correlate nearly linearly with stellar mass at fixed age. The majority of local ETGs follow the same star-formation law as local star-forming galaxies, and their current SFEs do not depend on either stellar mass or age. Our results clearly indicate that molecular gas is fueling current star formation in local ETGs, that appear to acquire this gas via mechanisms regulated primarily by stellar mass. The current SFEs of local ETGs are similar to those of local star-forming galaxies, indicating that their low SFRs are likely due to smaller cold gas fractions rather than a suppression of star formation." @default.
- W2620142666 created "2017-06-05" @default.
- W2620142666 creator A5019536621 @default.
- W2620142666 creator A5022389742 @default.
- W2620142666 creator A5034596366 @default.
- W2620142666 creator A5035523633 @default.
- W2620142666 creator A5078782186 @default.
- W2620142666 creator A5083480324 @default.
- W2620142666 creator A5088728917 @default.
- W2620142666 date "2017-09-01" @default.
- W2620142666 modified "2023-09-25" @default.
- W2620142666 title "A star formation study of the ATLAS<sup>3D</sup>early-type galaxies with the AKARI all-sky survey" @default.
- W2620142666 cites W1868862929 @default.
- W2620142666 cites W1904244634 @default.
- W2620142666 cites W1925665838 @default.
- W2620142666 cites W1966449863 @default.
- W2620142666 cites W1966503522 @default.
- W2620142666 cites W1968842958 @default.
- W2620142666 cites W1977439877 @default.
- W2620142666 cites W1978573215 @default.
- W2620142666 cites W1980741350 @default.
- W2620142666 cites W1985952407 @default.
- W2620142666 cites W1991391334 @default.
- W2620142666 cites W1992051588 @default.
- W2620142666 cites W1993989528 @default.
- W2620142666 cites W1995088170 @default.
- W2620142666 cites W2003637061 @default.
- W2620142666 cites W2003814700 @default.
- W2620142666 cites W2004810932 @default.
- W2620142666 cites W2005379068 @default.
- W2620142666 cites W2005955929 @default.
- W2620142666 cites W2013949855 @default.
- W2620142666 cites W2016094316 @default.
- W2620142666 cites W2025611164 @default.
- W2620142666 cites W2029965202 @default.
- W2620142666 cites W2030945938 @default.
- W2620142666 cites W2031950948 @default.
- W2620142666 cites W2036329646 @default.
- W2620142666 cites W2036432176 @default.
- W2620142666 cites W2040424327 @default.
- W2620142666 cites W2047430545 @default.
- W2620142666 cites W2048274049 @default.
- W2620142666 cites W2052923345 @default.
- W2620142666 cites W2059401183 @default.
- W2620142666 cites W2065490229 @default.
- W2620142666 cites W2066745291 @default.
- W2620142666 cites W2067705370 @default.
- W2620142666 cites W2067978315 @default.
- W2620142666 cites W2069025619 @default.
- W2620142666 cites W2079526267 @default.
- W2620142666 cites W2082065985 @default.
- W2620142666 cites W2083592425 @default.
- W2620142666 cites W2091739399 @default.
- W2620142666 cites W2095706292 @default.
- W2620142666 cites W2097557733 @default.
- W2620142666 cites W2103144440 @default.
- W2620142666 cites W2105954496 @default.
- W2620142666 cites W2108860401 @default.
- W2620142666 cites W2110198441 @default.
- W2620142666 cites W2111356925 @default.
- W2620142666 cites W2111755119 @default.
- W2620142666 cites W2113934820 @default.
- W2620142666 cites W2116466430 @default.
- W2620142666 cites W2119277713 @default.
- W2620142666 cites W2121734372 @default.
- W2620142666 cites W2125631609 @default.
- W2620142666 cites W2130328928 @default.
- W2620142666 cites W2131581942 @default.
- W2620142666 cites W2131829043 @default.
- W2620142666 cites W2135224069 @default.
- W2620142666 cites W2136208154 @default.
- W2620142666 cites W2136623067 @default.
- W2620142666 cites W2136640358 @default.
- W2620142666 cites W2140807130 @default.
- W2620142666 cites W2142220522 @default.
- W2620142666 cites W2144728917 @default.
- W2620142666 cites W2145086822 @default.
- W2620142666 cites W2145106374 @default.
- W2620142666 cites W2146026248 @default.
- W2620142666 cites W2168626734 @default.
- W2620142666 cites W2171494255 @default.
- W2620142666 cites W2197835965 @default.
- W2620142666 cites W2224287814 @default.
- W2620142666 cites W2237565830 @default.
- W2620142666 cites W2276550722 @default.
- W2620142666 cites W2320943990 @default.
- W2620142666 cites W2492811461 @default.
- W2620142666 cites W2518813763 @default.
- W2620142666 cites W3099102955 @default.
- W2620142666 cites W3100086394 @default.
- W2620142666 cites W3100206188 @default.
- W2620142666 cites W3100236229 @default.
- W2620142666 cites W3100287354 @default.
- W2620142666 cites W3100800982 @default.
- W2620142666 cites W3101048891 @default.
- W2620142666 cites W3101415288 @default.
- W2620142666 cites W3102192930 @default.
- W2620142666 cites W3102277364 @default.