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Unveiling the Universe with emerging cosmological probes
Izzo, Luca; Verde, Licia; Risaliti, Guido +22 more
The detection of the accelerated expansion of the Universe has been one of the major breakthroughs in modern cosmology. Several cosmological probes (Cosmic Microwave Background, Supernovae Type Ia, Baryon Acoustic Oscillations) have been studied in depth to better understand the nature of the mechanism driving this acceleration, and they are being…
Ram pressure stripping in high-density environments
Fossati, Matteo; Sun, Ming; Boselli, Alessandro
Galaxies living in rich environments are suffering different perturbations able to drastically affect their evolution. Among these, ram pressure stripping, i.e. the pressure exerted by the hot and dense intracluster medium (ICM) on galaxies moving at high velocity within the cluster gravitational potential well, is a key process able to remove the…
The JWST Early Release Observations
Koekemoer, Anton M.; Ravindranath, Swara; Henry, Alaina +34 more
The James Webb Space Telescope (JWST) Early Release Observations (EROs) is a set of public outreach products created to mark the end of commissioning and the beginning of science operations for JWST. Colloquially known as the "Webb First Images and Spectra," these products were intended to demonstrate to the worldwide public that JWST is ready for…
A nearby long gamma-ray burst from a merger of compact objects
Troja, E.; Wollaeger, R. T.; Butler, N. R. +21 more
Gamma-ray bursts (GRBs) are flashes of high-energy radiation arising from energetic cosmic explosions. Bursts of long (greater than two seconds) duration are produced by the core-collapse of massive stars1, and those of short (less than two seconds) duration by the merger of compact objects, such as two neutron stars2. A thir…
Galaxy And Mass Assembly (GAMA): Data Release 4 and the z < 0.1 total and z < 0.08 morphological galaxy stellar mass functions
Holwerda, Benne W.; Conselice, Christopher J.; van der Wel, Arjen +67 more
In Galaxy And Mass Assembly Data Release 4 (GAMA DR4), we make available our full spectroscopic redshift sample. This includes 248 682 galaxy spectra, and, in combination with earlier surveys, results in 330 542 redshifts across five sky regions covering ~250 deg2. The redshift density, is the highest available over such a sustained are…
The PHANGS-MUSE survey. Probing the chemo-dynamical evolution of disc galaxies
Sandstrom, Karin M.; Henshaw, Jonathan D.; Kruijssen, J. M. Diederik +45 more
We present the PHANGS-MUSE survey, a programme that uses the MUSE integral field spectrograph at the ESO VLT to map 19 massive (9.4 < log(M⋆/M⊙)< 11.0) nearby (D ≲ 20 Mpc) star-forming disc galaxies. The survey consists of 168 MUSE pointings (1' by 1' each) and a total of nearly 15 × 106 spectra, covering ∼1.…
GOLDRUSH. IV. Luminosity Functions and Clustering Revealed with 4,000,000 Galaxies at z 2-7: Galaxy-AGN Transition, Star Formation Efficiency, and Implication for Evolution at z > 10
Ono, Yoshiaki; Ouchi, Masami; Willott, Chris J. +16 more
We present new measurements of rest-UV luminosity functions and angular correlation functions from 4,100,221 galaxies at z ~ 2-7 identified in the Subaru/Hyper Suprime-Cam survey and CFHT Large Area U-band Survey. The obtained luminosity functions at z ~ 4-7 cover a very wide UV luminosity range of ~ $0.002\mbox{--}2000{L}_{\mathrm{UV}}^{* }$ comb…
Stellar and substellar companions from Gaia EDR3. Proper-motion anomaly and resolved common proper-motion pairs
Thévenin, Frédéric; Kervella, Pierre; Arenou, Frédéric
Context. The multiplicity fraction of stars, down to the substellar regime, is a parameter of fundamental importance for stellar formation, evolution, and planetology. The census of multiple stars in the solar neighborhood is however incomplete.
Aims: Our study is aimed at detecting companions of HIPPARCOS catalog stars from the proper motion…
A strangely light neutron star within a supernova remnant
Doroshenko, Victor; Santangelo, Andrea; Pühlhofer, Gerd +1 more
To constrain the equation of state of cold dense matter, astrophysical measurements are essential. These are mostly based on observations of neutron stars in the X-ray band, and, more recently, also on gravitational wave observations. Of particular interest are observations of unusually heavy or light neutron stars which extend the range of centra…
Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5
Altamirano, D.; Khan, S.; Guiglion, G. +23 more
We present a catalogue of 362 million stellar parameters, distances, and extinctions derived from Gaia's Early Data Release (EDR3) cross-matched with the photometric catalogues of Pan-STARRS1, SkyMapper, 2MASS, and AllWISE. The higher precision of the Gaia EDR3 data, combined with the broad wavelength coverage of the additional photometric surveys…