Can I read HI Studies of Extremely Metal Poor Dwarfs in Voids -- I on EtoBox?

HI Studies of Extremely Metal Poor Dwarfs in Voids -- I by Kurapati, Sushma; Pustilnik, Simon A.; Egorova, Evgeniya S. is a scholarly article available to read on EtoBox.

What is HI Studies of Extremely Metal Poor Dwarfs in Voids -- I about?

We present and discuss the results of the Giant Metrewave Radio Telescope (GMRT) HI 21-cm line mapping for five isolated low-mass (M_bary ~(2--8)*10^7 Mo) eXtremely Metal Poor (XMP) dwarfs [12+log(O/H)=7.13-7.28], selected from the Nearby Void Galaxy (NVG) sample. All the studied void dwarfs show the disturbed morphology in the HI maps with the angular resolutions of ~11" to ~40". We examine the HI morphology and velocity field and the relative orientation of their stellar and gas body spins. We discuss the overall non-equilibrium state of their gas and the possible origin and evolution of the studied void dwarfs. The most straightforward interpretation of the ubiquitous phenomenon of the gas component non-equilibrium state in these and similar void dwarfs is the cold accretion from the void filaments and/or minor mergers. The cold gas accretion in voids could be linked to the presence of small filaments that constitute the substructure of voids.

Author

Kurapati, Sushma; Pustilnik, Simon A.; Egorova, Evgeniya S.

Published

2023

Language

EN