Search Publications
Missions
Journals
Publication Years
The Gaia-ESO survey: Age-chemical-clock relations spatially resolved in the Galactic disc
Baratella, M.; Gilmore, G.; Montes, D. +33 more
Context. The last decade has seen a revolution in our knowledge of the Galaxy thanks to the Gaia and asteroseismic space missions and the ground-based spectroscopic surveys.
Aims: To complete this picture, it is necessary to map the ages of its stellar populations. During recent years, the dependence on time of abundance ratios involving slow…
HSC-XXL: Baryon budget of the 136 XXL groups and clusters
Oguri, Masamune; Valtchanov, Ivan; Umetsu, Keiichi +17 more
We present our determination of the baryon budget for an X-ray-selected XXL sample of 136 galaxy groups and clusters spanning nearly two orders of magnitude in mass (M500 ~ 1013-1015 M⊙) and the redshift range 0 ≲ z ≲ 1. Our joint analysis is based on the combination of Hyper Suprime-Cam Subaru Strategic…
GIARPS High-resolution Observations of T Tauri stars (GHOsT). IV. Accretion properties of the Taurus-Auriga young association
Munari, U.; Alcalá, J. M.; Manara, C. F. +9 more
Aims: In the framework of the GIARPS High-resolution Observations of T Tauri stars (GHOsT) project, we study the accretion properties of 37 classical T Tauri stars of the Taurus-Auriga star-forming region (SFR) with the aim of characterizing their relation with the properties of the central star, with jets and disk winds, and with the global …
Classical Cepheid period-Wesenheit-metallicity relation in the Gaia bands
Clementini, G.; Ripepi, V.; Molinaro, R. +7 more
Context. Classical Cepheids (DCEPs) represent a fundamental tool to calibrate the extragalactic distance scale. However, they are also powerful stellar population tracers in the context of Galactic studies. The forthcoming Data Release 3 of the Gaia mission will allow us to study, with unprecedented detail, the structure, the dynamics, and the che…
First discoveries and localizations of Fast Radio Bursts with MeerTRAP: real-time, commensal MeerKAT survey
Prochaska, J. Xavier; Kramer, M.; Tejos, N. +24 more
We report on the discovery and localization of fast radio bursts (FRBs) from the MeerTRAP project, a commensal fast radio transient-detection programme at MeerKAT in South Africa. Our hybrid approach combines a coherent search with an average field-of-view (FoV) of 0.4 $\rm deg^{2}$ with an incoherent search utilizing a FoV of ~1.27 $\rm deg^{2}$ …
Primordial black holes and gravitational waves in hybrid inflation with chaotic potentials
Ahmed, Waqas; Junaid, M.; Zubair, Umer
We study the formation of primordial black hole (PBH) dark matter and the generation of scalar induced secondary gravitational waves (SIGWs) in a non-supersymmetric model of hybrid inflation with chaotic (polynomial-like) potential, including one-loop radiative corrections. A radiatively corrected version of these models is entirely consistent wit…
Strong constraints on primordial black hole dark matter from 16 years of INTEGRAL/SPI observations
Calore, F.; Serpico, P. D.; Siegert, T. +2 more
We present a new analysis of the diffuse soft γ -ray emission toward the inner Galaxy as measured by the spectrometer aboard the INTEGRAL satellite (SPI) with 16 years of data taking. The analysis implements a spatial template fit of SPI data and an improved instrumental background model. We characterize the contribution of primordial black holes …
Water and an Escaping Helium Tail Detected in the Hazy and Methane-depleted Atmosphere of HAT-P-18b from JWST NIRISS/SOSS
Deming, Drake; Sing, David K.; Fu, Guangwei +11 more
JWST is here. The early release observation (ERO) program provides us with the first look at the scientific data and the spectral capabilities. One of the targets from the ERO is HAT-P-18b, an inflated Saturn-mass planet with an equilibrium temperature of ~850 K. We present the NIRISS/SOSS transmission spectrum of HAT-P-18b from 0.6 to 2.8 µ…
Comprehensive catalogue of the overall best distances and properties of 402 galactic novae
Schaefer, Bradley E.
I derive the overall best distances for all 402 known Galactic novae, and I collect their many properties. The centrepiece is the 74 novae with accurate parallaxes from the new Gaia data release. For the needed priors, I have collected 171 distances based on old methods (including expansion parallaxes and extinction distances). Further, I have col…
Cosmological Fast Optical Transients with the Zwicky Transient Facility: A Search for Dirty Fireballs
Kulkarni, S. R.; Filippenko, Alexei V.; Riddle, Reed +35 more
Dirty fireballs are a hypothesized class of relativistic massive-star explosions with an initial Lorentz factor Γinit below the Γinit ~ 100 required to produce a long-duration gamma-ray burst (LGRB), but which could still produce optical emission resembling LGRB afterglows. Here we present the results of a search for on-axis …