527 citations · 8.5k across the 128 of their papers we have counts for
10 papers · 1 filter
Testing the two planes of satellites in the Centaurus Group
Oliver Müller, Helmut Jerjen, Marcel S. Pawlowski +1
The existence of satellite galaxy planes poses a major challenge for the standard picture of structure formation with non-baryonic dark matter. Recently Tully et al. (2015) reporte…
Dwarf Galaxy Planes: the discovery of symmetric structures in the Local Group
Marcel S. Pawlowski, Pavel Kroupa, Helmut Jerjen
Both major galaxies in the Local Group (LG) are surrounded by thin planes of mostly co-orbiting satellite galaxies, the vast polar structure (VPOS) around the Milky Way (MW) and th…
Population gradients and photometric metallicities in early- and transition-type dwarf galaxies: Clues from the Sculptor group
S. Lianou, E. Grebel, G. S. Da Costa +3
We focus on the resolved stellar populations of one early- and four transition-type dwarf galaxies in the Sculptor group, with the aim to examine the potential presence of populati…
The Local Volume HI Survey: Galaxy Kinematics
Emma M. Kirby, Baerbel Koribalski, Helmut Jerjen +1
We present a detailed analysis of the neutral hydrogen kinematics of 12 nearby dwarf irregular galaxies observed as part of the Local Volume HI Survey (LVHIS) conducted at the Aust…
The intriguing HI gas in NGC 5253: an infall of a diffuse, low-metallicity HI cloud?
Angel R. Lopez-Sanchez, Baerbel Koribalski, Janine van Eymeren +4
(Abridged) We present new, deep HI line and 20-cm radio continuum data of the very puzzling blue compact dwarf galaxy NGC 5253, obtained with the ATCA as part of the `Local Volume…
The Small Isolated Gas Rich Irregular Dwarf (SIGRID) Galaxy Sample: Description and First Results
David C Nicholls, Michael A Dopita, Helmut Jerjen +1
Using an optically-unbiased selection process based on the HIPASS neutral hydrogen survey, we have selected a sample of 83 spatially isolated, gas-rich dwarf galaxies in the southe…