Search Publications
SEEDisCS. I. Molecular gas in galaxy clusters and their large-scale structure: The case of CL1411.1−1148 at z ∼ 0.5
Jablonka, P.; De Lucia, G.; Zaritsky, D. +7 more
We investigate how the galaxy reservoirs of molecular gas fuelling star formation are transformed while the host galaxies infall onto galaxy cluster cores. As part of the Spatially Extended ESO Distant Cluster Survey (SEEDisCS), we present CO(3-2) observations of 27 star-forming galaxies obtained with the Atacama Large Millimeter Array. These sour…
An observational testbed for cosmological zoom-in simulations: constraining stellar migration in the solar cylinder using asteroseismology
Grand, Robert J. J.; Stokholm, Amalie; Verma, Kuldeep +1 more
Large-scale stellar surveys coupled with recent developments in magneto-hydrodynamical simulations of the formation of Milky Way-mass galaxies provide an unparalleled opportunity to unveil the physical processes driving the evolution of the Galaxy. We developed a framework to compare a variety of parameters with their corresponding predictions fro…
A Comparison of Star-forming Clumps and Tidal Tails in Local Mergers and High-redshift Galaxies
Calzetti, Daniela; Whitmore, Bradley C.; Chandar, Rupali +8 more
The Clusters, Clumps, Dust, and Gas in Extreme Star-forming Galaxies (CCDG) survey with the Hubble Space Telescope includes multiwavelength imaging of 13 galaxies less than 100 Mpc away, spanning a range of morphologies and sizes, from blue compact dwarfs to luminous infrared galaxies, all with star formation rates in excess of hundreds of solar m…
Forbidden Line Emission from Type Ia Supernova Remnants Containing Balmer-dominated Shells
Leibundgut, Bruno; Raymond, John C.; Chu, You-Hua +3 more
Balmer-dominated shells in supernova remnants (SNRs) are produced by collisionless shocks advancing into a partially neutral medium and are most frequently associated with Type Ia supernovae. We have analyzed Hubble Space Telescope (HST) images and Very Large Telescope (VLT)/Multi-Unit Spectroscopic Explorer (MUSE) or AAT/Wide Field Integral Spect…
The Gaia view of the Cepheus flare
Ábrahám, Péter; Kun, Mária; Szilágyi, Máté
We present a new census of candidate pre-main-sequence stars in the Cepheus flare star-forming region, based on Gaia EDR3 parallaxes, proper motions, and colour-magnitude diagrams. We identified new candidate members of the previously known young stellar groups associated with NGC 7023, L1177, L1217/L1219, L1228, L1235, and L1251. We studied the 3…
New low-mass members of Chamaeleon I and ϵ Cha
Scholz, A.; Mužić, K.; Almendros-Abad, V. +3 more
Aims: The goal of this paper is to increase the membership list of the Chamaeleon star-forming region and the ϵ Cha moving group, in particular for low-mass stars and substellar objects. We extended the search region significantly beyond the dark clouds.
Methods: Our sample has been selected based on proper motions and colours obtained f…
Statistics of the Chemical Composition of Solar Analog Stars and Links to Planet Formation
Beaton, Rachael L.; Jain, Bhuvnesh; Teske, Johanna K. +3 more
The Sun has been found to be depleted in refractory (rock-forming) elements relative to nearby solar analogs, suggesting a potential indicator of planet formation. Given the small amplitude of the depletion, previous analyses have primarily relied on high signal-to-noise stellar spectra and a strictly differential approach to determine elemental a…
Transmission Spectroscopy of the Earth-Sun System to Inform the Search for Extrasolar Life
May, E. M.; Mayorga, L. C.; Sotzen, Kristin S. +7 more
Upcoming NASA astrophysics missions such as the James Webb Space Telescope will search for signs of life on planets transiting nearby stars. Doing so will require coadding dozens of transmission spectra to build up sufficient signal to noise while simultaneously accounting for challenging systematic effects such as surface/weather variability, atm…
Speckle Interferometry of Nearby Multiple Stars. II. 2007-2020 Positional Measurements and Orbits of Sixteen Objects
Dyachenko, V.; Beskakotov, A.; Maksimov, A. +3 more
Long-term monitoring at the 6 m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences made it possible to improve the orbits of 15 objects (HIP 689, HIP 3951, HIP 10438, HIP 43948, HIP 69962, HIP 95995, HIP 102029, HIP 102357, HIP 104383, HIP 105947, HIP 106255, HIP 108917, HIP 111546, HIP 113726, HIP 114922) and co…
Seasonal and Spatial Variability of Carbon Monoxide (CO) in the Martian Atmosphere From PFS/MEX Observations
Vandaele, Ann Carine; Daerden, Frank; Neary, Lori +7 more
A subset of more than 100,000 nadir measurements covering more than 7 Martian years (MY 26-MY 33) recorded in the thermal part of the Short Wavelength Channel (SWC) from the Planetary Fourier Spectrometer (PFS) on board Mars Express is exploited to investigate the global distribution and the seasonal cycle of carbon monoxide (CO) on Mars. The retr…