Matches in SemOpenAlex for { <https://semopenalex.org/work/W2100032934> ?p ?o ?g. }
- W2100032934 endingPage "1827" @default.
- W2100032934 startingPage "1806" @default.
- W2100032934 abstract "We present simulations of the formation of thick discs via the accretion of two-component satellites onto a pre-existing thin disc. Our goal is to establish the detailed characteristics of the thick discs obtained in this way, as well as their dependence on the initial orbital and internal properties of the accreted objects. We find that mergers with 10–20 per cent mass of the host lead to the formation of thick discs whose characteristics are similar, both in morphology as in kinematics, to those observed. Despite the relatively large mass ratios, the host discs are not fully destroyed by the infalling satellites: a remaining kinematically cold and thin component containing ∼15–25 per cent of the mass can be identified, which is embedded in a hotter and thicker disc. This may for example, explain the existence of a very old thin disc stars in the Milky Way. The final scaleheights of the discs depend both on the initial inclination and properties of the merger, but the fraction of satellite stellar particles at ∼4 scaleheights directly measures the mass ratio between the satellite and host galaxy. Our thick discs typically show boxy isophotes at very low surface brightness levels (>6 mag below their peak value). Kinematically, the velocity ellipsoids of the simulated thick discs are similar to that of the Galactic thick disc at the solar radius. The trend of with radius is found to be a very good discriminant of the initial inclination of the accreted satellite. In the Milky Way, the possible existence of a vertical gradient in the rotational velocity of the thick disc as well as the observed value of at the solar vicinity appear to favour the formation of the thick disc by a merger with either low or intermediate orbital inclination." @default.
- W2100032934 created "2016-06-24" @default.
- W2100032934 creator A5012817308 @default.
- W2100032934 creator A5073770015 @default.
- W2100032934 date "2008-12-21" @default.
- W2100032934 modified "2023-10-16" @default.
- W2100032934 title "Simulations of minor mergers - I. General properties of thick discs" @default.
- W2100032934 cites W1505305309 @default.
- W2100032934 cites W1845039355 @default.
- W2100032934 cites W1892049369 @default.
- W2100032934 cites W1939591003 @default.
- W2100032934 cites W1965525744 @default.
- W2100032934 cites W1966665981 @default.
- W2100032934 cites W1969673373 @default.
- W2100032934 cites W1972478821 @default.
- W2100032934 cites W1974524958 @default.
- W2100032934 cites W1975308061 @default.
- W2100032934 cites W1976255645 @default.
- W2100032934 cites W1984603026 @default.
- W2100032934 cites W1985315891 @default.
- W2100032934 cites W1985789402 @default.
- W2100032934 cites W1986010423 @default.
- W2100032934 cites W1992185231 @default.
- W2100032934 cites W1993867829 @default.
- W2100032934 cites W1994369018 @default.
- W2100032934 cites W1995948236 @default.
- W2100032934 cites W1996235392 @default.
- W2100032934 cites W1998014385 @default.
- W2100032934 cites W1999894587 @default.
- W2100032934 cites W2004317779 @default.
- W2100032934 cites W2008214685 @default.
- W2100032934 cites W2014925718 @default.
- W2100032934 cites W2014947287 @default.
- W2100032934 cites W2015998330 @default.
- W2100032934 cites W2016561491 @default.
- W2100032934 cites W2020951456 @default.
- W2100032934 cites W2021846845 @default.
- W2100032934 cites W2022887971 @default.
- W2100032934 cites W2031685299 @default.
- W2100032934 cites W2033855655 @default.
- W2100032934 cites W2035295259 @default.
- W2100032934 cites W2035547408 @default.
- W2100032934 cites W2039053156 @default.
- W2100032934 cites W2041542911 @default.
- W2100032934 cites W2045869342 @default.
- W2100032934 cites W2048619572 @default.
- W2100032934 cites W2052414714 @default.
- W2100032934 cites W2052679594 @default.
- W2100032934 cites W2053529340 @default.
- W2100032934 cites W2059588423 @default.
- W2100032934 cites W2062323950 @default.
- W2100032934 cites W2064743375 @default.
- W2100032934 cites W2065692061 @default.
- W2100032934 cites W2065943660 @default.
- W2100032934 cites W2066099518 @default.
- W2100032934 cites W2071923894 @default.
- W2100032934 cites W2073664129 @default.
- W2100032934 cites W2077334492 @default.
- W2100032934 cites W2077777316 @default.
- W2100032934 cites W2077908590 @default.
- W2100032934 cites W2079170423 @default.
- W2100032934 cites W2079271853 @default.
- W2100032934 cites W2083950714 @default.
- W2100032934 cites W2084287642 @default.
- W2100032934 cites W2085544475 @default.
- W2100032934 cites W2089310227 @default.
- W2100032934 cites W2092948595 @default.
- W2100032934 cites W2098666281 @default.
- W2100032934 cites W2103814939 @default.
- W2100032934 cites W2108754800 @default.
- W2100032934 cites W2109138120 @default.
- W2100032934 cites W2125336746 @default.
- W2100032934 cites W2133734669 @default.
- W2100032934 cites W2139143221 @default.
- W2100032934 cites W2141314742 @default.
- W2100032934 cites W2143172087 @default.
- W2100032934 cites W2148582290 @default.
- W2100032934 cites W2153434629 @default.
- W2100032934 cites W2160299852 @default.
- W2100032934 cites W2170794187 @default.
- W2100032934 cites W2170924363 @default.
- W2100032934 cites W3009699307 @default.
- W2100032934 cites W3098221464 @default.
- W2100032934 cites W3098294653 @default.
- W2100032934 cites W3098620591 @default.
- W2100032934 cites W3100110286 @default.
- W2100032934 cites W3100189475 @default.
- W2100032934 cites W3101290424 @default.
- W2100032934 cites W3102311635 @default.
- W2100032934 cites W3102433159 @default.
- W2100032934 cites W3102467437 @default.
- W2100032934 cites W3102669749 @default.
- W2100032934 cites W3103418232 @default.
- W2100032934 cites W3103899138 @default.
- W2100032934 cites W3103947064 @default.
- W2100032934 cites W3104619408 @default.
- W2100032934 cites W3105274712 @default.
- W2100032934 cites W3123656828 @default.