Resolving the disc–halo degeneracy – I: a look at NGC 628

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 476:2 (2018) 1909-1930

Authors:

S Aniyan, KC Freeman, M Arnaboldi, OE Gerhard, L Coccato, M Fabricius, K Kuijken, M Merrifield, AA Ponomareva

Extragalactic optical and near-infrared foregrounds to 21-cm epoch of reionisation experiments

Proceedings of the International Astronomical Union Cambridge University Press 12:S333 (2018) 183-190

Authors:

Matthew J Jarvis, Rebecca AA Bowler, PW Hatfield

Abstract:

Foreground contamination is one of the most important limiting factors in detecting the neutral hydrogen in the epoch of reionisation. These foregrounds can be roughly split into galactic and extragalactic foregrounds. In these proceedings we highlight information that can be gleaned from multi-wavelength extragalactic surveys in order to overcome this issue. We discuss how clustering information from the lower-redshift, foreground galaxies, can be used as additional information in accounting for the noise associated with the foregrounds. We then go on to highlight the expected contribution of future optical and near-infrared surveys for detecting the galaxies responsible for ionising the Universe. We suggest that these galaxies can also be used to reduce the systematics in the 21-cm epoch of reionisation signal through cross-correlations if enough common area is surveyed.

Extragalactic optical and near-infrared foregrounds to 21-cm epoch of reionisation experiments

Proceedings of the International Astronomical Union Cambridge University Press 12:S333 (2018) 183-190

Authors:

Matthew J Jarvis, Rebecca AA Bowler, PW Hatfield

Abstract:

Foreground contamination is one of the most important limiting factors in detecting the neutral hydrogen in the epoch of reionisation. These foregrounds can be roughly split into galactic and extragalactic foregrounds. In these proceedings we highlight information that can be gleaned from multi-wavelength extragalactic surveys in order to overcome this issue. We discuss how clustering information from the lower-redshift, foreground galaxies, can be used as additional information in accounting for the noise associated with the foregrounds. We then go on to highlight the expected contribution of future optical and near-infrared surveys for detecting the galaxies responsible for ionising the Universe. We suggest that these galaxies can also be used to reduce the systematics in the 21-cm epoch of reionisation signal through cross-correlations if enough common area is surveyed.

An ALMA view of star formation efficiency suppression in early-type galaxies after gas-rich minor mergers

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 476:1 (2018) 122-132

Authors:

Freeke van de Voort, Timothy A Davis, Satoki Matsushita, Kate Rowlands, Stanislav S Shabala, James R Allison, Yuan-Sen Ting, Anne E Sansom, Paul P van der Werf

SDSS-IV MaNGA: evidence of the importance of AGN feedback in low-mass galaxies

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 476:1 (2018) 979-998

Authors:

Samantha J Penny, Karen L Masters, Rebecca Smethurst, Robert C Nichol, Coleman M Krawczyk, Dmitry Bizyaev, Olivia Greene, Charles Liu, Mariarosa Marinelli, Sandro B Rembold, Rogemar A Riffel, Gabriele da Silva Ilha, Dominika Wylezalek, Brett H Andrews, Kevin Bundy, Niv Drory, Daniel Oravetz, Kaike Pan