Galaxy And Mass Assembly (GAMA): Environmental Quenching of Centrals and Satellites in Groups

Autor: Davies, L. J. M., Robotham, A. S. G., Lagos, C. del P., Driver, S. P., Stevens, A. R. H., Bahé, Y. M., Alpaslan, M., Bremer, M. N., Brown, M. J. I., Brough, S., Bland-Hawthorn, J., Cortese, L., Elahi, P., Grootes, M. W., Holwerda, B. W., Ludlow, A. D., McGee, S., Owers, M., Phillipps, S.
Rok vydání: 2019
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1093/mnras/sty3393
Popis: Recently a number of studies have found a similarity between the passive fraction of central and satellite galaxies when controlled for both stellar and halo mass. These results suggest that the quenching processes that affect galaxies are largely agnostic to central/satellite status, which contradicts the traditional picture of increased satellite quenching via environmental processes such as stripping, strangulation and starvation. Here we explore this further using the Galaxy And Mass Assembly (GAMA) survey which extends to ~2dex lower in stellar mass than SDSS, is more complete for closely-separated galaxies (>95% compared to >70%), and identifies lower-halo-mass groups outside of the very local Universe (M$_{\mathrm{halo}}\sim10^{12}$M$_{\odot}$ at $0.1Comment: 15 pages, 8 figures, MNRAS accepted
Databáze: arXiv