Search Publications
The bright end of the infrared luminosity functions and the abundance of hyperluminous infrared galaxies
Bondi, M.; Prandoni, I.; Małek, K. +20 more
Aims: We provide the most accurate estimate yet of the bright end of the infrared (IR) luminosity functions (LFs) and the abundance of hyperluminous IR galaxies (HLIRGs) with IR luminosities >1013L⊙, thanks to the combination of the high sensitivity, angular resolution, and large area of the LOFAR Deep Fields, which p…
A Systematic Search for Outbursting AM CVn Systems with the Zwicky Transient Facility
Duev, Dmitry A.; Szkody, Paula; Mróz, Przemek +15 more
AM CVn systems are a rare type of accreting binary that consists of a white dwarf and a helium-rich, degenerate donor star. Using the Zwicky Transient Facility (ZTF), we searched for new AM CVn systems by focusing on blue, outbursting stars. We first selected outbursting stars using the ZTF alerts. We cross matched the candidates with Gaia and Pan…
Long-term Spectroscopic Survey of the Pleiades Cluster: The Binary Population
Torres, Guillermo; Latham, David W.; Quinn, Samuel N.
We present the results of a spectroscopic monitoring program of the Pleiades region aimed at completing the census of spectroscopic binaries in the cluster, extending it to longer periods than previously reachable. We gathered 6104 spectra of 377 stars between 1981 and 2021, and merged our radial velocities with 1151 measurements from an independe…
The CARMENES search for exoplanets around M dwarfs. Two terrestrial planets orbiting G 264-012 and one terrestrial planet orbiting Gl 393
Bouchy, F.; Amado, P. J.; Bauer, F. F. +52 more
We report the discovery of two planetary systems, namely G 264-012, an M 4.0 dwarf with two terrestrial planets (Mb sin i=2.50−0.30+0.29 M⊕ and Mc sin i=3.75−0.47+0.48 M⊕), and Gl 393, a bright M 2.0 dwarf with one terrestrial planet (Mb sini = 1.71 …
Exploring the role of binarity in the origin of the bimodal rotational velocity distribution in stellar clusters
Kamann, Sebastian; Saracino, Sara; Bastian, Nate +2 more
Many young- and intermediate-age massive stellar clusters host bimodal distributions in the rotation rates of their stellar populations, with a dominant peak of rapidly rotating stars and a secondary peak of slow rotators. The origin of this bimodal rotational distribution is currently debated and two main theories have been put forward in the lit…
SuperBoRG: Search for the Brightest of Reionizing Galaxies and Quasars in HST Parallel Imaging Data
Morishita, T.
The Hubble Space Telescope (HST) has been providing tremendous survey efficiency via its pure-parallel mode by observing another field in parallel with the primary instrument in operation for the primary observation. In this study, we present a new archival project, SuperBoRG, which aims at compiling data taken in extragalactic parallel programs o…
The TW Hya Rosetta Stone Project. II. Spatially Resolved Emission of Formaldehyde Hints at Low-temperature Gas-phase Formation
Wilner, David J.; Cleeves, L. Ilsedore; Walsh, Catherine +15 more
Formaldehyde (H2CO) is an important precursor to organics like methanol (CH3OH). It is important to understand the conditions that produce H2CO and prebiotic molecules during star and planet formation. H2CO possesses both gas-phase and solid-state formation pathways, involving either UV-produced radical …
The GOGREEN survey: dependence of galaxy properties on halo mass at z > 1 and implications for environmental quenching
Cooper, M. C.; Muzzin, Adam; Vulcani, Benedetta +18 more
We use photometric redshifts and statistical background subtraction to measure stellar mass functions in galaxy group-mass (4.5-8 × 1013 M⊙) haloes at 1 < z < 1.5. Groups are selected from COSMOS and SXDF, based on X-ray imaging and sparse spectroscopy. Stellar mass (Mstellar) functions are computed for quies…
Evaluation of CME Arrival Prediction Using Ensemble Modeling Based on Heliospheric Imaging Observations
Dumbović, Mateja; Möstl, Christian; Weiss, Andreas J. +8 more
In this study, we evaluate a coronal mass ejection (CME) arrival prediction tool that utilizes the wide-angle observations made by STEREO's heliospheric imagers (HI). The unsurpassable advantage of these imagers is the possibility to observe the evolution and propagation of a CME from close to the Sun out to 1 AU and beyond. We believe that by exp…
HD 143006: circumbinary planet or misaligned disc?
Pinte, C.; Ballabio, G.; Nealon, R. +3 more
Misalignments within protoplanetary discs are now commonly observed, and features such as shadows in scattered light images indicate departure from a co-planar geometry. VLT/SPHERE (Very Large Telescope/Spectro-Polarimetric High-contrast Exoplanet REsearch) observations of the disc around HD 143006 show a large-scale asymmetry and two narrow dark …