Search Publications
Resolved Lyman-α properties of a luminous Lyman-break galaxy in a large ionized bubble at z = 6.53
Sobral, David; Cantalupo, Sebastiano; Darvish, Behnam +5 more
The observed properties of the Lyman-α (Ly α) emission line are a powerful probe of neutral gas in and around galaxies. We present spatially resolved Ly α spectroscopy with VLT/MUSE targeting VR7, a UV-luminous galaxy at z = 6.532 with moderate Ly α equivalent width (EW0 ≈ 38 Å). These data are combined with deep resolved [CII]158&…
The GALAH survey: temporal chemical enrichment of the galactic disc
Lewis, Geraint F.; Ting, Yuan-Sen; Casey, Andrew R. +22 more
We present isochrone ages and initial bulk metallicities ([Fe/H]_{bulk}, by accounting for diffusion) of 163 722 stars from the GALAH Data Release 2, mainly composed of main-sequence turn-off stars and subgiants (7000 K> T_{ eff}> 4000 K and log g>3 dex). The local age-metallicity relationship (AMR) is nearly flat but with significant sca…
IRAM 30-m-EMIR redshift search of z = 3-4 lensed dusty starbursts selected from the HerBS sample
Pérez-Fournon, I.; Ivison, R. J.; Clements, D. L. +15 more
Using the Eight MIxer Receiver (EMIR) instrument on the Institut de RadioAstronomie Millimétrique (IRAM) 30-m telescope, we conducted a spectroscopic redshift search of seven zphot ∼ 4 submillimetre bright galaxies selected from the Herschel Bright Sources sample with fluxes at 500 µm greater than 80 mJy. For four sources, we obta…
TOI-132 b: A short-period planet in the Neptune desert transiting a V = 11.3 G-type star★
Vanderburg, Andrew; Latham, David W.; Law, Nicholas M. +49 more
The Neptune desert is a feature seen in the radius-period plane, whereby a notable dearth of short period, Neptune-like planets is found. Here, we report the Transiting Exoplanet Survey Satellite (TESS) discovery of a new short-period planet in the Neptune desert, orbiting the G-type dwarf TYC 8003-1117-1 (TOI-132). TESS photometry shows transit-l…
A model for redistributing heat over the surface of irradiated spider companions
Clark, C. J.; Breton, R. P.; Kennedy, M. R. +2 more
Spider pulsars are binary systems containing an energetic millisecond pulsar that intensely irradiates a closely orbiting low-mass companion. Modelling their companion's optical light curves is essential to the study of the orbital properties of the binary, including the determination of the pulsar mass, characterizing the pulsar wind, and the sta…
Investigating the growing population of massive quiescent galaxies at cosmic noon
Papovich, Casey; Finkelstein, Steven L.; Stevans, Matthew L. +10 more
We explore the build-up of quiescent galaxies using a sample of 28 469 massive (M⋆ ≥ 1011 M⊙) galaxies at redshifts 1.5 < $z$ < 3.0, drawn from a 17.5 deg2 area (0.33 Gpc3 comoving volume at these redshifts). This allows for a robust study of the quiescent fraction as a function of mass …
SPIDERS: overview of the X-ray galaxy cluster follow-up and the final spectroscopic data release
Finoguenov, A.; Salvato, M.; Merloni, A. +19 more
SPIDERS (The SPectroscopic IDentification of eROSITA Sources) is a large spectroscopic programme for X-ray selected galaxy clusters as part of the Sloan Digital Sky Survey-IV (SDSS-IV). We describe the final data set in the context of SDSS Data Release 16 (DR16): the survey overall characteristics, final targeting strategies, achieved completeness…
V1460 Her: a fast spinning white dwarf accreting from an evolved donor star
Thorstensen, John R.; Gänsicke, B. T.; Pala, A. F. +6 more
We present time-resolved optical and ultraviolet (UV) spectroscopy and photometry of V1460 Her, an eclipsing cataclysmic variable with a 4.99-h orbital period and an overluminous K5-type donor star. The optical spectra show emission lines from an accretion disc along with absorption lines from the donor. We use these to measure radial velocities, …
HST/WFC3 grism observations of z ∼ 1 clusters: evidence for evolution in the mass-size relation of quiescent galaxies from post-starburst galaxies
Demarco, R.; Brammer, G. B.; Matharu, J. +10 more
Minor mergers have been proposed as the driving mechanism for the size growth of quiescent galaxies with decreasing redshift. The process whereby large star-forming galaxies quench and join the quiescent population at the large size end has also been suggested as an explanation for this size growth. Given the clear association of quenching with cl…
A complete view of the outskirts of the Coma cluster
Walker, S. A.; Mirakhor, M. S.
We present a new extended XMM-Newton mosaic of the nearby Coma cluster, which covers the cluster out to the virial radius with nearly complete azimuthal coverage. This large mosaic is combined with the Planck Sunyaev Zel'dovich effect observations to recover the thermodynamic properties of the intracluster medium in an azimuthally averaged profile…