Search Publications
unWISE Coadds: The Five-year Data Set
Lang, D.; Schlafly, E. F.; Meisner, A. M. +1 more
We present full-sky coadded maps created by uniformly combining the first five years of Wide-field Infrared Survey Explorer (WISE) and NEOWISE imaging at 3.4 µm (W1) and 4.6 µm (W2). By incorporating both pre-hibernation WISE exposures from 2010 to 2011 and the first four years (2013-2017) of post-hibernation exposures from the NEOWISE…
The MUSE Ultra Deep Field (MUDF). II. Survey design and the gaseous properties of galaxy groups at 0.5 < z < 1.5
Smail, I.; Cristiani, S.; D'Odorico, V. +12 more
We present the goals, design, and first results of the MUSE Ultra Deep Field (MUDF) survey, a large programme using the Multi Unit Spectroscopic Explorer (MUSE) instrument at the ESO Very Large Telescope. The MUDF survey is collecting ≈150 h on-source of integral field optical spectroscopy in a 1.5 × 1.2 arcmin2 region which hosts sever…
The AGN fuelling/feedback cycle in nearby radio galaxies I. ALMA observations and early results
Davis, Timothy A.; Bureau, Martin; Mignano, Arturo +7 more
This is the first paper of a series exploring the multifrequency properties of a sample of 11 nearby low-excitation radio galaxies (LERGs) in the southern sky. We are conducting an extensive study of different galaxy components (stars, warm and cold gas, radio jets) with the aim of improving our understanding of the active galactic nucleus (AGN) f…
Evidence for Sub-Chandrasekhar Type Ia Supernovae from Stellar Abundances in Dwarf Galaxies
Kovalev, Mikhail; McWilliam, Andrew; Shen, Ken J. +6 more
There is no consensus on the progenitors of Type Ia supernovae (SNe Ia) despite their importance for cosmology and chemical evolution. We address this question using our previously published catalogs of Mg, Si, Ca, Cr, Fe, Co, and Ni abundances in dwarf galaxy satellites of the Milky Way (MW) to constrain the mass at which the white dwarf (WD) exp…
The RWST, a comprehensive statistical description of the non-Gaussian structures in the ISM
Boulanger, F.; Levrier, F.; Zhang, S. +5 more
The interstellar medium (ISM) is a complex nonlinear system governed by the interplay between gravity and magneto-hydrodynamics, as well as radiative, thermodynamical, and chemical processes. Our understanding of it mostly progresses through observations and numerical simulations, and a quantitative comparison between these two approaches requires…
Transiting exocomets detected in broadband light by TESS in the β Pictoris system
Zwintz, K.; Kennedy, G. M.; Zieba, S. +1 more
Aims: We search for signs of falling evaporating bodies (FEBs, also known as exocomets) in photometric time series obtained for β Pictoris after fitting and removing its δ Scuti-type pulsation frequencies.
Methods: Using photometric data obtained by the TESS satellite we determined the pulsational properties of the exoplanet host star β …
Environmental impacts on molecular gas in protocluster galaxies at z ∼ 2
Tamura, Yoichi; Kohno, Kotaro; Suzuki, Tomoko L. +12 more
We present the results from ALMA CO(3-2) observations of 66 Hα-selected galaxies in three protoclusters around radio galaxies: PKS 1138-262 (z = 2.16), USS 1558-003 (z = 2.53), and 4C 23.56 (z = 2.49). The pointing areas have an overdensity of ∼100 compared to the mean surface number density of galaxies in field environments. We detect the CO emis…
The local and distant Universe: stellar ages and H0
Verde, Licia; Jimenez, Raul; Cimatti, Andrea +2 more
The ages of the oldest stellar objects in our galaxy provide an independent test of the current cosmological model as they give a lower limit to the age of the Universe. Recent accurate parallaxes by the Gaia space mission, accurate measurements of the metallicity of stars, via individual elemental abundances, and advances in the modelling of stel…
Standard Galactic field RR Lyrae II: a Gaia DR2 calibration of the period-Wesenheit-metallicity relation
Madore, Barry F.; Freedman, Wendy L.; Sarajedini, Ata +9 more
RR Lyrae stars have long been popular standard candles, but significant advances in methodology and technology have been made in recent years to increase their precision as distance indicators. We present multiwavelength (optical UBVRcIc and Gaia G, BP, RP; near-infrared JHKs; mid-infrared [3.6], [4.5]) period-lumi…
Solar Chromospheric Temperature Diagnostics: A Joint ALMA-Hα Analysis
Cranmer, Steven R.; Reardon, Kevin P.; Uitenbroek, Han +4 more
We present the first high-resolution, simultaneous observations of the solar chromosphere in the optical and millimeter wavelength ranges, obtained with the Atacama Large Millimeter Array (ALMA) and the Interferometric Bidimensional Spectrometer at the Dunn Solar Telescope. In this paper we concentrate on the comparison between the brightness temp…