Abstract Details

Name: Vikas Jadhav Y
Affiliation: Student
Conference ID: ASI2020_532
Title : Specific Angular Momentum of Superthin galaxies
Authors and Co-Authors : Jadhav Y, V and Banerjee, A
Abstract Type : Poster
Abstract Category : Extragalactic Astronomy
Abstract : Superthin galaxies are low surface brightness (LSB) bulgeless disc galaxies having stellar discs with unusually high planar-to-vertical axes ratio b/a > 10 - 20, the formation and evolution of which is not well-understood. In this talk I shall present the work done on its specific angular momentum, along with some bulgeless LSB's. We observe that three superthins and seven LSB's lie above the 95.4 per cent confidence band of the js − Vrot regression line for ordinary bulgeless disc galaxies, Vrot being the asymptotic rotational velocity. Further, we find that superthins and LSBs have higher js and RD values for a given value of stellar mass Ms at high values of statistical significance, compared to ordinary disc galaxies. I shall also talk about the calculations done for the median spin parameter which for superthins is an order of magnitude higher than that for LSB's and ordinary disc galaxies. All of these results may have important implications about the existence of such superthin stellar discs. Reference : Jadhav Y, V., and Banerjee, A. 2019, "The specific angular momenta of superthin galaxies: Cue to their origin?" Monthly Notices of the Royal Astronomical Society, 488, 547