Matches in SemOpenAlex for { <https://semopenalex.org/work/W2784979133> ?p ?o ?g. }
- W2784979133 endingPage "331" @default.
- W2784979133 startingPage "319" @default.
- W2784979133 abstract "We investigate the merger histories of isolated dwarf galaxies based on a suite of 15 high-resolution cosmological zoom-in simulations, all with masses of $M_{rm halo} approx 10^{10},{rm M}_{odot}$ (and M$_starsim10^5-10^7,{rm M}_{odot}$) at $z=0$, from the Feedback in Realistic Environments (FIRE) project. The stellar populations of these dwarf galaxies at $z=0$ are formed essentially entirely in situ: over 90$%$ of the stellar mass is formed in the main progenitor in all but two cases, and all 15 of the galaxies have >70$%$ of their stellar mass formed in situ. Virtually all galaxy mergers occur prior to $zsim3$, meaning that accreted stellar populations are ancient. On average, our simulated dwarfs undergo 5 galaxy mergers in their lifetimes, with typical pre-merger galaxy mass ratios that are less than 1:10. This merger frequency is generally comparable to what has been found in dissipationless simulations when coupled with abundance matching. Two of the simulated dwarfs have a luminous satellite companion at $z=0$. These ultra-faint dwarfs lie at or below current detectability thresholds but are intriguing targets for next-generation facilities. The small contribution of accreted stars make it extremely difficult to discern the effects of mergers in the vast majority of dwarfs either photometrically or using resolved-star color-magnitude diagrams (CMDs). The important implication for near-field cosmology is that star formation histories of comparably massive galaxies derived from resolved CMDs should trace the build-up of stellar mass in one main system across cosmic time as opposed to reflecting the contributions of many individual star formation histories of merged dwarfs." @default.
- W2784979133 created "2018-02-02" @default.
- W2784979133 creator A5000130235 @default.
- W2784979133 creator A5017618068 @default.
- W2784979133 creator A5017804259 @default.
- W2784979133 creator A5038938655 @default.
- W2784979133 creator A5039647198 @default.
- W2784979133 creator A5039703536 @default.
- W2784979133 creator A5042006626 @default.
- W2784979133 creator A5042534433 @default.
- W2784979133 creator A5044296184 @default.
- W2784979133 creator A5053323835 @default.
- W2784979133 creator A5070973306 @default.
- W2784979133 creator A5083397483 @default.
- W2784979133 date "2018-06-06" @default.
- W2784979133 modified "2023-10-18" @default.
- W2784979133 title "No assembly required: mergers are mostly irrelevant for the growth of low-mass dwarf galaxies" @default.
- W2784979133 cites W1488192889 @default.
- W2784979133 cites W1766563480 @default.
- W2784979133 cites W1850315173 @default.
- W2784979133 cites W1894488274 @default.
- W2784979133 cites W1914459412 @default.
- W2784979133 cites W1915695732 @default.
- W2784979133 cites W1937529881 @default.
- W2784979133 cites W1964055719 @default.
- W2784979133 cites W1966671643 @default.
- W2784979133 cites W1975112881 @default.
- W2784979133 cites W1976477989 @default.
- W2784979133 cites W1999367759 @default.
- W2784979133 cites W2001085255 @default.
- W2784979133 cites W2012886609 @default.
- W2784979133 cites W2021937810 @default.
- W2784979133 cites W2026337556 @default.
- W2784979133 cites W2028732750 @default.
- W2784979133 cites W2038851723 @default.
- W2784979133 cites W2040364743 @default.
- W2784979133 cites W2048955849 @default.
- W2784979133 cites W2058543060 @default.
- W2784979133 cites W2065943660 @default.
- W2784979133 cites W2074259895 @default.
- W2784979133 cites W2076246932 @default.
- W2784979133 cites W2078240981 @default.
- W2784979133 cites W2084178876 @default.
- W2784979133 cites W2084287642 @default.
- W2784979133 cites W2088813665 @default.
- W2784979133 cites W2101349161 @default.
- W2784979133 cites W2107685005 @default.
- W2784979133 cites W2128071918 @default.
- W2784979133 cites W2129908204 @default.
- W2784979133 cites W2132500436 @default.
- W2784979133 cites W2135102304 @default.
- W2784979133 cites W2136626788 @default.
- W2784979133 cites W2143114413 @default.
- W2784979133 cites W2148882585 @default.
- W2784979133 cites W2149625009 @default.
- W2784979133 cites W2151751242 @default.
- W2784979133 cites W2157808121 @default.
- W2784979133 cites W2158172548 @default.
- W2784979133 cites W2158622701 @default.
- W2784979133 cites W2163721792 @default.
- W2784979133 cites W2185926565 @default.
- W2784979133 cites W2213773773 @default.
- W2784979133 cites W2283614325 @default.
- W2784979133 cites W2300623779 @default.
- W2784979133 cites W2331439334 @default.
- W2784979133 cites W2462347146 @default.
- W2784979133 cites W2464531482 @default.
- W2784979133 cites W2491901249 @default.
- W2784979133 cites W2534695097 @default.
- W2784979133 cites W2539770846 @default.
- W2784979133 cites W2555496002 @default.
- W2784979133 cites W2573445935 @default.
- W2784979133 cites W2575003957 @default.
- W2784979133 cites W2589317285 @default.
- W2784979133 cites W2593821841 @default.
- W2784979133 cites W2614409774 @default.
- W2784979133 cites W2615727759 @default.
- W2784979133 cites W2619712556 @default.
- W2784979133 cites W2765094318 @default.
- W2784979133 cites W2765767150 @default.
- W2784979133 cites W2770289384 @default.
- W2784979133 cites W2774601909 @default.
- W2784979133 cites W3098339022 @default.
- W2784979133 cites W3098856143 @default.
- W2784979133 cites W3098976132 @default.
- W2784979133 cites W3099020958 @default.
- W2784979133 cites W3100917709 @default.
- W2784979133 cites W3101073027 @default.
- W2784979133 cites W3101761100 @default.
- W2784979133 cites W3102346111 @default.
- W2784979133 cites W3103965189 @default.
- W2784979133 cites W3104057791 @default.
- W2784979133 cites W3105225363 @default.
- W2784979133 cites W3105420829 @default.
- W2784979133 cites W3105575415 @default.
- W2784979133 cites W3105619781 @default.
- W2784979133 cites W3121198563 @default.
- W2784979133 cites W3122195462 @default.