Search Publications
The GLASS-JWST Early Release Science Program: IV. Data release of 263 spectra from 245 unique sources
Vulcani, B.; Bradač, M.; Brammer, G. +24 more
We release fully reduced spectra obtained with NIRSpec onboard JWST as part of the GLASS-JWST Early Release Science Program and a follow-up Director's Discretionary Time program 2756. From these 263 spectra of 245 unique sources, acquired with low (R = 30–300) and high dispersion (R ~ 2700) gratings, we derive redshifts for 200 unique sources in t…
The K2 Asteroseismic KEYSTONE sample of Dwarf and Subgiant Solar-Like Oscillators. I. Data and Asteroseismic parameters
Chaplin, William J.; Davies, Guy R.; Bieryla, Allyson +19 more
Aims: The KEYSTONE project aims to enhance our understanding of solar-like oscillators by delivering a catalogue of global asteroseismic parameters (Δv and vmax) for 173 stars, comprising mainly dwarfs and subgiants, observed by the K2 mission in its short-cadence mode during campaigns 6-19.
Methods: We derive atmospheric para…
The properties of supermassive black holes and their host galaxies for type 1 and 2 active galactic nuclei in the eFEDS and COSMOS fields
Georgantopoulos, I.; Mountrichas, G.
In this study, our primary objective is to compare the properties of supermassive black holes (SMBHs) and their host galaxies between type 1 and type 2 active galactic nuclei (AGNs). In our analysis, we use X-ray detected sources in two fields, namely the eFEDS and the COSMOS-Legacy. To classify the X-ray sources, we performed a spectral energy di…
Evolution of coronal mass ejections with and without sheaths from the inner to the outer heliosphere: Statistical investigation for 1975 to 2022
Temmer, M.; Larrodera, C.
Aims: This study covers a thorough statistical investigation of the evolution of interplanetary coronal mass ejections (ICMEs) with and without sheaths through a broad heliocentric distance and temporal range. The analysis treats the sheath and magnetic obstacle (MO) separately in order to gain more insight on their physical properties. In de…
The XMM-Newton and NuSTAR view of IRASF11119+3257: I. Detection of multiple ultra fast outflow components and a very cold corona
Veilleux, S.; Bianchi, S.; Cappi, M. +21 more
Context. IRASF11119+3257 is an ultra-luminous infrared galaxy with a post-merger morphology, hosting a type-1 quasar at z = 0.189. It shows a prominent ultra-fast outflow (UFO) absorption feature (vout ∼ 0.25c) in its 2013 Suzaku spectrum. This is the first system in which the energy released by the UFO was compared to that of the known…
The tight correlation between PAH and CO emission from z ∼ 0 to 4
Boogaard, Leindert A.; Shivaei, Irene
Aims. The cold molecular gas mass is one of the crucial, yet challenging, parameters in galaxy evolution studies. Here, we introduce a new calibration and a method for estimating molecular gas masses using mid-infrared (MIR) photometry. This topic is timely as the James Webb Space Telescope (JWST) now allows us to detect the MIR emission of typica…
The [Y/Mg] chemical clock in the Galactic disk: The influence of metallicity and the Galactic population in the solar neighbourhood
Meléndez, Jorge; Shejeelammal, J.; Rathsam, Anne +1 more
Context. Stellar ages are an important parameter in studies of the chemical evolution of the Galaxy. To better estimate these ages, various methods complementary to the conventional isochrone fitting method have been implemented in the past decade. Several recent studies have established the existence of a relationship between chemical clocks and …
A newborn active galactic nucleus in a star-forming galaxy
Salvato, M.; Merloni, A.; Arévalo, P. +8 more
Aims: We report on the finding of a newborn active galactic nucleus (AGN), based on the observation of current AGN activity in a galaxy previously classified as non-active. We subsequently characterize the AGN's evolution.
Methods: Black hole ignition event candidates were selected from a parent sample of spectrally classified non-active…
Assessing the capability of a model-based stellar XUV estimation
Namekata, Kosuke; Takasao, Shinsuke; Shoda, Munehito
Stellar X-ray and extreme ultraviolet (XUV) emission drives the heating and chemical reactions in planetary atmospheres and proto-planetary disks, and therefore, a proper estimation of a stellar XUV spectrum is required for their studies. One proposed solution is to estimate stellar atmospheric heating using numerical models, although the validati…
BASS: XLIII. Optical, UV, and X-ray emission properties of unobscured Swift/BAT active galactic nuclei
Ueda, Yoshihiro; Kawamuro, Taiki; Ricci, Claudio +19 more
We present one of the largest multiwavelength studies of simultaneous optical-to-X-ray spectral energy distributions (SEDs) of unobscured (NH < 1022 cm‑2) active galactic nuclei (AGN) in the local Universe. Using a representative sample of hard-X-ray-selected AGN from the 70-month Swift/BAT catalog, with optical…