Search Publications
Laboratory and Computational Studies of Interstellar Ices
Ioppolo, S.; Linnartz, H.; Cuppen, Herma M.
Ice mantles play a crucial role in shaping the astrochemical inventory of molecules during star and planet formation. Small-scale molecular processes have a profound impact on large-scale astronomical evolution. The areas of solid-state laboratory astrophysics and computational chemistry involve the study of these processes. We review laboratory e…
Velocity Dispersion of the Open Cluster NGC 2571 by Radial Velocities and Proper Motions
Carraro, Giovanni; Seleznev, Anton F.; Kulesh, Maxim V. +3 more
We use a kernel density estimator method to evaluate the stellar velocity dispersion in the open cluster NGC 2571. We derive the 3D velocity dispersion using both proper motions as extracted from Gaia Data Release 3 and single-epoch radial velocities as obtained with the instrument FLAMES at ESO's Very Large Telescope. The mean-square velocity alo…
Correction to: TOI-2447 b / NGTS-29 b: a 69-day Saturn around a Solar analogue
Trifonov, Trifon; Henning, Thomas; Ramsay, Gavin +63 more
Discovering transiting exoplanets with relatively long orbital periods ($>$10 days) is crucial to facilitate the study of cool exoplanet atmospheres ($T_{\rm eq} < 700 K$) and to understand exoplanet formation and inward migration further out than typical transiting exoplanets. In order to discover these longer period transiting exoplanets, …
What causes the ultraviolet extinction bump at the cosmic dawn?
Li, Aigen; Yang, X. J.; Li, Qi
The enigmatic ultraviolet (UV) extinction bump at 2175
The GAPS Programme at TNG: LXI. Atmospheric parameters and elemental abundances of TESS young exoplanet host stars
Baratella, M.; Scandariato, G.; Sozzetti, A. +26 more
Context. The study of exoplanets at different evolutionary stages can shed light on their formation, migration, and evolution. The determination of exoplanet properties depends on the properties of their host stars. It is therefore important to characterise the host stars for accurate knowledge on their planets. Aims. Our final goal is to derive, …
Molecular cloud matching in CO and dust in M33: I. High-resolution hydrogen column density maps from Herschel
Bigiel, Frank; Ossenkopf-Okada, Volker; Riechers, Dominik +7 more
This study is aimed to contribute to a more comprehensive understanding of the molecular hydrogen distribution in the galaxy M33 by introducing novel methods for generating high angular resolution (18.2″, equivalent to 75 pc for a distance of 847 kpc) column density maps of molecular hydrogen (NH2). M33 is a local group galax…
Stacking and Analyzing MOSDEF Galaxies by Spectral Types: Implications for Dust Geometry and Galaxy Evolution
Siana, Brian; Shapley, Alice E.; Reddy, Naveen A. +12 more
We examine star formation and dust properties for a sample of 660 galaxies at 1.37 ≤ z ≤ 2.61 in the MOSDEF survey by dividing them into groups with similarly shaped spectral energy distributions (SEDs). For each group, we combine the galaxy photometry into a finely sampled composite SED, and stack their spectra. This method enables the study of m…
Compact Radio Sources in the Field of Tycho's Supernova Remnant
Rodríguez, L. F.; Dzib, S. A.; Yanza, V.
We present sensitive, high angular resolution Jansky Very Large Array observations made in 2014 at 1.50 GHz toward the field of Tycho's supernova remnant. We detect a total of 36 compact sources in a field with radius of 13 arcmin. This number is consistent with the expected number of background sources. We use older observations made with the cla…
UOCS. XIV. Uncovering extremely low-mass white dwarfs and blue lurkers in NGC 752
Jadhav, Vikrant V.; Subramaniam, Annapurni; Sagar, Ram
Context. Evolutionary pathways of binary systems are vastly different from single stellar evolution, and thus there is a need to quantify their frequency and diversity. Thanks to their to their coeval nature, open clusters are the best test beds for unveiling the secrets of binary populations. The availability of multi-wavelength data in recent ye…
Spatially Resolved Analysis of Stellar Populations in NGC 2992: Impact of Active Galactic Nucleus Feedback
Chen, Yanmei; Li, Zhiyuan; Wang, Junfeng +1 more
In NGC 2992, a galaxy-scale ionized gas outflow driven by active galactic nuclei (AGNs) has long been recognized, yet its impact on the host galaxy has remained elusive. In this paper, we utilize data from the archival Very Large Telescope/MUSE to present a spatially resolved analysis of stellar populations in this galaxy. Two different stellar po…