Abstract Details
| Name: Silpa Sasikumar Affiliation: NCRA-TIFR, Pune Conference ID: ASI2019_332 Title : Kinematics and dynamics of dwarf galaxies Authors and Co-Authors : Silpa Sasikumar, Jayaram N. Chengalur, Manisha Samble Abstract Type : Poster Abstract Category : Extragalactic Astronomy Abstract : Although the dynamics and total mass content of galaxies have been an area of research for the last few decades, the number of galaxies with well-measured rotation curves and detailed angular momentum studies is still small. This is particularly the case at the low mass end of the galaxy population, i.e. for dwarf irregular galaxies. Data for nearly 270 galaxies are available in the GMRT archive. Reduced data cubes at multiple resolutions are now available for most of them. However, only a small fraction of them have had detailed rotation curve analysis and subsequent studies like mass modelling and measurements of their angular momentum done. We have selected galaxies with reasonably smooth velocity fields and absolute B-band magnitude of < -19.0 from the archive and derived rotation curves by 3D modeling of their data cubes via newly available packages such as FAT and 3DBAROLO. We have tried to understand the differences between the rotation curves derived using these softwares. We shall also present the measurements of baryonic mass and specific angular momentum for a small number of dwarf galaxies from the archive. |