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eUDS: the SRG/eROSITA X-ray survey of the UKIDSS Ultra Deep Survey field. Catalogue of sources
Sunyaev, R.; Krivonos, R.; Sazonov, S. +2 more
The eROSITA X-ray telescope on board the Spectrum-Roentgen-Gamma (SRG) spacecraft observed the field of the UKIDSS Ultra-Deep Survey (UDS) in August-September 2019, during its flight to Sun-Earth L2 point. The resulting eROSITA UDS (or eUDS) survey was thus the first eROSITA X-ray imaging survey, which demonstrated the capability of the telescope …
Dealing with broad-band X-ray spectra of faint AGN: a case study
Malizia, A.; Bassani, L.; Molina, M.
In this work, we analyse three average-luminosity hard X-ray selected AGN: ESO 506-G27, IGR J19039+3344, and NGC 7465. They have simultaneous Swift/XRT and NuSTAR data never published before and have been poorly studied at X-ray energies. These sources make for interesting targets both from a methodological and scientific point of view. Scientific…
Disentangling the dust and gas contributions of the JWST/MIRI spectrum of Sz 28
Woitke, P.; Kamp, I.; Min, M. +2 more
Context. Recent spectra of protoplanetary disks around very low-mass stars (VLMS), captured by the Mid-InfraRed Instrument (MIRI) on board the James Webb Space Telescope (JWST), reveal a rich carbon chemistry. Current interpretations of these spectra are based on 0D slab models and provide valuable estimates for molecular emission temperatures and…
Lessons from Hubble and Spitzer: 1D Self-consistent Model Grids for 19 Hot Jupiter Emission Spectra
Fortney, Jonathan J.; Line, Michael R.; Mansfield, Megan +4 more
We present a population-level analysis of the dayside thermal emission spectra of 19 planets observed with Hubble WFC3 and Spitzer IRAC 3.6 and 4.5 µm, spanning equilibrium temperatures 1200–2700 K and 0.7–10.5 Jupiter masses. We use grids of planet-specific 1D, cloud-free, radiative–convective–thermochemical equilibrium models (1D-RCTE) com…
The Link between Nonthermal Velocity and Free Magnetic Energy in Solar Flares
Temmer, Manuela; Veronig, Astrid; Baker, Deborah +5 more
The cause of excess spectral line broadening (nonthermal velocity) is not definitively known, but given its rise before and during flaring, the causal processes hold clues to understanding the triggers for the onset of reconnection and the release of free magnetic energy from the coronal magnetic field. A comparison of data during a 9 hr period fr…
INTEGRAL search for magnetar giant flares from the Virgo Cluster and in nearby galaxies with high star formation rate
Mereghetti, Sandro; Salvaterra, Ruben; Pacholski, Dominik Patryk +1 more
Giant flares from magnetars can reach, for a fraction of a second, luminosities greater than 10
Stripe 82X Data Release 3: Multiwavelength Catalog with New Spectroscopic Redshifts and Black Hole Masses
Kirkpatrick, Allison; Trakhtenbrot, Benny; LaMassa, Stephanie +10 more
We present the third catalog release of the wide-area (31.3 deg2) Stripe 82 X-ray survey. This catalog combines previously published X-ray source properties with multiwavelength counterparts and photometric redshifts, presents 343 new spectroscopic redshifts, and provides black hole masses for 1297 Type 1 active galactic nuclei (AGN). W…
The K2-24 planetary system revisited by CHEOPS
Alonso, R.; Deleuil, M.; Erikson, A. +82 more
The planetary system K2-24 is composed of two transiting low-density Neptunians locked in an almost perfect 2:1 resonance and showing large transit time variations (TTVs), and it is an excellent laboratory to search for signatures of planetary migration. Previous studies performed with K2, Spitzer, and RV data tentatively claimed a significant non…
MASTER OT J030227.28+191754.5: An unprecedentedly energetic dwarf nova outburst
Schramm, Malte; Maehara, Hiroyuki; Nogami, Daisaku +60 more
We present a detailed study of the MASTER OT J030227.28
Astrometric and photometric characterization of η Tel B combining two decades of observations
Milli, J.; Zurlo, A.; Langlois, M. +11 more
Context. η Tel is an 18 Myr system composed of a 2.09 M⊙ A-type star with an M7-M8 brown dwarf companion, η Tel B. The two objects have a projected separation of 4″.2 (~208 au). This system has been targeted by high-contrast imaging campaigns for over 20 yr, facilitating its orbital and photometric characterization. The companion, η Tel…