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An ALMA survey of the SCUBA-2 Cosmology Legacy SurveyUKIDSS/UDS Field : Halo Masses for Submillimetre Galaxies
(2021-03-10)
We present an analysis of the spatial clustering of a large sample of high-resolution, interferometically identified, submillimetre galaxies (SMGs). We measure the projected cross-correlation function of ~350 SMGs in the ...
Less and the more IGM transmitted galaxies from z~2.7 to z~6 from VANDELS and VUDS
(2021-03-04)
Aim. Our aim is to analyse the variance of the Inter-Galactic Medium transmission (IGM) by studying this parameter in the rest-frame UV spectra of a large sample of high redshift galaxies. Method. We make use of the VIMOS ...
The COMBS Survey II: Distinguishing the Metal-Poor Bulge from the Halo Interlopers
(2021-03-01)
The metal-poor stars in the bulge are important relics of the Milky Way's formation history, as simulations predict that they are some of the oldest stars in the Galaxy. In order to determine if they are truly ancient ...
AstroVaDEr: Astronomical Variational Deep Embedder for Unsupervised Morphological Classification of Galaxies and Synthetic Image Generation
(2021-03-01)
We present AstroVaDEr (Astronomical Variational Deep Embedder), a variational autoencoder designed to perform unsupervised clustering and synthetic image generation using astronomical imaging catalogues. The model is a ...
Observations of magnetic fields surrounding LkHa 101 taken by the BISTRO survey with JCMT-POL-2
(2021-02-10)
We report the first high spatial resolution measurement of magnetic fields surrounding LkHa 101, part of the Auriga- California molecular cloud. The observations were taken with the POL-2 polarimeter on the James Clerk ...
Elevated r-process enrichment in Gaia Sausage and Sequoia
(2021-02-10)
The Gaia Sausage and the Sequoia represent the major accretion events that formed the stellar halo of the Milky Way. A detailed chemical study of these main building blocks provides a pristine view of the early steps of ...
A population of hypercompact HII regions identified from young HII regions
(2021-01-22)
Context. The derived physical parameters for young H II regions are normally determined assuming the emission region to be optically thin. However, this assumption is unlikely to hold for young H II regions such as ...
Dark-matter-deficient dwarf galaxies form via tidal stripping of dark matter in interactions with massive companions
(2021-01-15)
In the standard Lambda-CDM paradigm, dwarf galaxies are expected to be dark-matter-rich, as baryonic feedback is thought to quickly drive gas out of their shallow potential wells and quench star formation at early epochs. ...
The origin of low-surface-brightness galaxies in the dwarf regime
(2021-01-13)
Low-surface-brightness galaxies (LSBGs) -- defined as systems that are fainter than the surface-brightness limits of past wide-area surveys -- form the overwhelming majority of galaxies in the dwarf regime (M* < 10^9 MSun). ...
A VLBA Survey of radio stars in the Orion Nebula Cluster: II. Astrometry
(2021-01-04)
From Very Long Baseline Array (VLBA) observations we previously identified a population of 123 young stellar systems with nonthermal radio emission toward the core of the Orion Nebula Cluster (ONC). We find optical sources ...