Search Publications
Physical properties of strong 1 < z < 3 Balmer and Paschen line emitters observed with JWST
Kartaltepe, J. S.; Dickinson, M.; Finkelstein, S. L. +22 more
Context. The ultraviolet continuum traces young stars while the near-infrared unveils older stellar populations and dust-obscured regions. Balmer emission lines provide insights into gas properties and young stellar objects but are highly affected by dust attenuation. The near-infrared Paschen lines suffer less dust attenuation and can be used to …
Period-luminosity and period-luminosity-metallicity relations for Galactic RR Lyrae stars in the Sloan bands
Narloch, W.; Gieren, W.; Pietrzyński, G. +6 more
Context. RR Lyrae stars are excellent tracers of the old population II due to their period-luminosity (PL) and period-luminosity-metallicity (PLZ) relations. While these relations have been investigated in detail in many photometric bands, there are few comprehensive studies about them in Sloan-like systems. Aims. We present PL and PLZ relations (…
Constraining the formation of WASP-39b using JWST transit spectroscopy
Waters, L. B. F. M.; Min, M.; Khorshid, N. +1 more
Context. Understanding the formation history of planets is one of the goals of studying exoplanet atmospheres. The atmospheric composition of planets can provide insights into the formation pathways of planets. Even though the mapping of the atmospheric composition onto a formation pathway is not unambiguous, with the increasing sensitivity of mod…
Probing the physical properties of the intergalactic medium using SRG/eROSITA spectra from blazars
Wilms, J.; Gatuzz, E.; Hämmerich, S. +1 more
Most baryonic matter resides in the intergalactic medium (IGM). This diffuse gas is primarily composed of ionized hydrogen and helium and fills the space between galaxies. Observations of this environment are crucial for better understanding the physical processes in it. We present an analysis of the IGM absorption using blazar spectra from the fi…
A dynamic view of V Hydrae. Monitoring of a spectroscopic-binary AGB star with an alkaline jet
Jorissen, A.; Planquart, L.; Escorza, A. +2 more
Context. The well studied carbon star V Hydrae is known to exhibit a complex asymmetric environment made of a dense equatorial wind and high-velocity outflows, hinting at its transition from the AGB phase to the asymmetric planetary nebula phase. In addition, V Hydrae also exhibits a long secondary period of 17 yr in its light curve, suggesting th…
TOI-663: A newly discovered multi-planet system with three transiting mini-Neptunes orbiting an early M star
Tamura, M.; Bouchy, F.; de Medeiros, J. R. +53 more
We present the detection of three exoplanets orbiting the early M dwarf TOI-663 (TIC 54962195; V = 13.7 mag, J = 10.4 mag, R★ = 0.512 ± 0.015 R⊙, M★ = 0.514 ± 0.012 M⊙, d = 64 pc). TOI-663 b, c, and d, with respective radii of 2.27 ± 0.10 R⊕, 2.26 ± 0.10 R⊕, and 1.92 ± 0.13 R⊕<…
The S-PLUS Ultra-Short Survey: First data release
Beers, Timothy C.; Placco, Vinicius M.; Limberg, Guilherme +15 more
Context. This paper presents the first public data release of the S-PLUS Ultra-Short Survey (USS), a photometric survey with short exposure times, covering approximately 9300 deg2 of the Southern sky. The USS utilizes the Javalambre 12-band magnitude system, including narrow, medium, and broad-band filters targeting prominent stellar sp…
KASHz+SUPER: Evidence of cold molecular gas depletion in AGN hosts at cosmic noon
Alexander, D. M.; Cappi, M.; Feltre, A. +32 more
The energy released by active galactic nuclei (AGN) has the potential to heat or remove the gas of the ISM, thus likely impacting the cold molecular gas reservoir of host galaxies at first, with star formation following as a consequence on longer timescales. Previous works on high-z galaxies, which compared the gas content of those without identif…
Volume density maps of the 862 nm DIB carrier and interstellar dust. Hints on the role of carbon-rich ejecta from AGB stars
Lallement, R.; Cox, N. L. J.; Vergely, J. L.
Context. The carbonaceous macromolecules imprinting the numerous absorptions called diffuse interstellar bands (DIBs) in astronomical spectra are omnipresent in the Galaxy and beyond. They represent a considerable reservoir of organic matter. However, their chemical formulae, formation, and destruction sites remain unknown. Their spatial distribut…
The Pristine survey: XXIV. The Galactic underdogs: Dynamic tales of a Milky Way metal-poor population
Sestito, Federico; Martin, Nicolas F.; Kordopatis, Georges +12 more
Context. Metal-poor stars hold key information on the early Milky Way. Through the identification and characterisation of substructures, one can understand internal mechanisms (including merger and accretion events), which are indispensable to reconstruct the formation history of the Galaxy. Aims. To allow an investigation of a population of very …