Cosmology

Research group

Sub department

About

Constraints on compact objects from the Dark Energy Survey five-year supernova sample

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) (2024) stae2614

Authors:

P Shah, TM Davis, M Vincenzi, P Armstrong, D Brout, R Camilleri, L Galbany, J García-Bellido, MSS Gill, O Lahav, J Lee, C Lidman, A Möller, M Sako, BO Sánchez, M Sullivan, L Whiteway, P Wiseman, S Allam, M Aguena, S Bocquet, D Brooks, DL Burke, A Carnero Rosell, LN da Costa, MES Pereira, S Desai, S Dodelson, P Doel, I Ferrero, B Flaugher, J Frieman, E Gaztanaga, D Gruen, RA Gruendl, G Gutierrez, K Herner, SR Hinton, DL Hollowood, K Honscheid, DJ James, K Kuehn, S Lee, JL Marshall, J Mena-Fernández, R Miquel, J Myles, A Palmese, A Pieres, AA Plazas Malagón, A Roodman, S Samuroff, E Sanchez, I Sevilla-Noarbe, M Smith, E Suchyta, MEC Swanson, G Tarle, C To, V Vikram, N Weaverdyck
More details from the publisher
More details

New tools for studying planarity in galaxy satellite systems: Milky Way satellite planes are consistent with ΛCDM

Monthly Notices of the Royal Astronomical Society (2024) stae2632

Authors:

E Uzeirbegovic, G Martin, S Kaviraj, RA Jackson, K Kraljic, Y Dubois, C Pichon, J Devriendt, S Peirani, J Silk, SK Yi
More details from the publisher

Hitting the slopes: A spectroscopic view of UV continuum slopes of galaxies reveals a reddening at z > 9.5

ArXiv 2411.14532 (2024)

Authors:

Aayush Saxena, Alex J Cameron, Harley Katz, Andrew J Bunker, Jacopo Chevallard, Francesco D'Eugenio, Santiago Arribas, Rachana Bhatawdekar, Kristan Boyett, Phillip A Cargile, Stefano Carniani, Stephane Charlot, Mirko Curti, Emma Curtis-Lake, Kevin Hainline, Zhiyuan Ji, Benjamin D Johnson, Gareth C Jones, Nimisha Kumari, Isaac Laseter, Michael V Maseda, Brant Robertson, Charlotte Simmonds, Sandro Tacchella, Hannah Ubler, Christina C Williams, Chris Willott, Joris Witstok, Yongda Zhu
Details from ArXiV

JADES: Primaeval Lyman-α emitting galaxies reveal early sites of reionisation out to redshift z ∼ 9

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) (2024) stae2535

Authors:

Joris Witstok, Roberto Maiolino, Renske Smit, Gareth C Jones, Andrew J Bunker, Jakob M Helton, Benjamin D Johnson, Sandro Tacchella, Aayush Saxena, Santiago Arribas, Rachana Bhatawdekar, Kristan Boyett, Alex J Cameron, Phillip A Cargile, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Mirko Curti, Emma Curtis-Lake, Francesco D’Eugenio, Daniel J Eisenstein, Kevin Hainline, Ryan Hausen, Nimisha Kumari, Isaac Laseter, Michael V Maseda, Marcia Rieke, Brant Robertson, Jan Scholtz, Irene Shivaei, Christina C Williams, Christopher NA Willmer, Chris Willott
More details from the publisher
More details

MIGHTEE: the continuum survey Data Release 1

Monthly Notices of the Royal Astronomical Society Oxford University Press 536:3 (2024) 2187-2211

Authors:

Catherine Hale, Ian Heywood, Matthew Jarvis, Imogen Whittam, Philip Best, Fangxia An, Rebecca Bowler, Ian Harrison, Allison Matthews, Dan Smith, Russ Taylor, Mattia Vaccari

Abstract:

The MeerKAT International GHz Tiered Extragalactic Exploration Survey (MIGHTEE) is one of the large survey projects using the MeerKAT telescope, covering four fields that have a wealth of ancillary data available. We present Data Release 1 of the MIGHTEE continuum survey, releasing total intensity images and catalogues over ∼20 deg2, across three fields at ∼1.2-1.3 GHz. This includes 4.2 deg2 over the Cosmic Evolution Survey (COSMOS) field, 14.4 deg2 over the XMM Large-Scale Structure (XMM-LSS) field and deeper imaging over 1.5 deg2 of the Extended Chandra Deep Field South (CDFS). We release images at both a lower resolution (7–9 arcsec) and higher resolution (∼5 arcsec). These images have central rms sensitivities of ∼1.3 −2.7 μJy beam−1 (∼1.2 −3.6 μJy beam−1) in the lower (higher) resolution images respectively. We also release catalogues comprised of ∼144 000 (∼114 000) sources using the lower (higher) resolution images. We compare the astrometry and flux-density calibration with the Early Science data in the COSMOS and XMM-LSS fields and previous radio observations in the CDFS field, finding broad agreement. Furthermore, we extend the source counts at the ∼10 μJy level to these larger areas (∼20 deg2) and, using the areal coverage of MIGHTEE we measure the sample variance for differing areas of sky. We find a typical sample variance of 10-20percnt for 0.3 and 0.5 sq. deg. sub-regions at S1.4 ≤ 200 μJy, which increases at brighter flux densities, given the lower source density and expected higher galaxy bias for these sources.
More details from the publisher
Details from ORA
More details