Search Publications
A Reanalysis of the Isolated Black Hole Candidate OGLE-2011-BLG-0462/MOA-2011-BLG-191
Lu, Jessica R.; Lam, Casey Y.
There are expected to be ~108 isolated black holes (BHs) in the Milky Way. OGLE-2011-BLG-0462/MOA-2011-BLG-191 (OB110462) is the only such BH with a mass measurement to date. However, its mass is disputed: Lam et al. measured a lower mass of 1.6-4.4 M ⊙, while Sahu et al. and Mróz et al. measured a higher mass of 5.8-8.7 M
Gaia Data Release 3. Cross-match of Gaia sources with variable objects from the literature
Gavras, Panagiotis; Ábrahám, Péter; Kóspál, Ágnes +22 more
Context. In current astronomical surveys with ever-increasing data volumes, automated methods are essential. Objects of known classes from the literature are necessary to train supervised machine-learning algorithms and to verify and validate their results.
Aims: The primary goal of this work is to provide a comprehensive data set of known va…
The ALMA REBELS Survey: the first infrared luminosity function measurement at z ∼ 7
Inami, H.; Schneider, R.; Oesch, P. A. +18 more
We present the first observational infrared luminosity function (IRLF) measurement in the Epoch of Reionization (EoR) based on a ultraviolet (UV)-selected galaxy sample with the Atacama Large Millimeter Array (ALMA) spectroscopic observations. Our analysis is based on the ALMA large program Reionization Era Bright Emission Line Survey (REBELS), wh…
A resonant sextuplet of sub-Neptunes transiting the bright star HD 110067
Alonso, R.; Deleuil, M.; Erikson, A. +149 more
Planets with radii between that of the Earth and Neptune (hereafter referred to as `sub-Neptunes') are found in close-in orbits around more than half of all Sun-like stars1,2. However, their composition, formation and evolution remain poorly understood3. The study of multiplanetary systems offers an opportunity to investigate…
The merger fraction of ultramassive white dwarfs
Toonen, Silvia; Bergeron, P.; Kilic, Mukremin +6 more
We search for merger products among the 25 most massive white dwarfs in the Montreal White Dwarf Database 100 pc sample through follow-up spectroscopy and high-cadence photometry. We find an unusually high fraction, 40 per cent, of magnetic white dwarfs among this population. In addition, we identify four outliers in transverse velocity and detect…
The UV luminosity functions of bright z > 8 galaxies: determination from 0.41 deg2 of HST observations along 300 independent sightlines
Treu, Tommaso; Trenti, Michele; Morishita, Takahiro +2 more
We determine the bright end of the rest-frame UV luminosity function (UVLF) at z = 8-10 by selecting bright z ≳ 8 photometric candidates from the largest systematic compilation of HST (pure-)parallel observations to date, the Super-Brightest-of-Reionizing-Galaxies (SuperBoRG) data set. The data set includes ~300 independent sightlines from WFC3 ob…
JWST observations of dust reservoirs in type IIP supernovae 2004et and 2017eaw
Temim, Tea; Van Dyk, Schuyler D.; Filippenko, Alexei V. +37 more
Supernova (SN) explosions have been sought for decades as a possible source of dust in the Universe, providing the seeds of galaxies, stars, and planetary systems. SN 1987A offers one of the most promising examples of significant SN dust formation, but until the James Webb Space Telescope (JWST), instruments have traditionally lacked the sensitivi…
Beyond the bulge-halo conspiracy? Density profiles of early-type galaxies from extended-source strong lensing
Massey, Richard; Lagattuta, David J.; Robertson, Andrew +9 more
Observations suggest that the dark matter and stars in early-type galaxies 'conspire' to produce a surprisingly simple distribution of total mass, ρ(r) ∝ ρ-γ, with γ ≈ 2. We measure the distribution of mass in 48 early-type galaxies that gravitationally lens a resolved background source. By fitting the source light in every pixel of ima…
GOALS-JWST: Small Neutral Grains and Enhanced 3.3 µm PAH Emission in the Seyfert Galaxy NGC 7469
Inami, Hanae; Böker, Torsten; Law, David R. +37 more
We present James Webb Space Telescope (JWST) Near Infrared Spectrograph (NIRSpec) integral field spectroscopy of the nearby luminous infrared galaxy NGC 7469. We take advantage of the high spatial/spectral resolution and wavelength coverage of JWST/NIRSpec to study the 3.3 µm neutral polycyclic aromatic hydrocarbon (PAH) grain emission on ~2…
Intracluster light is already abundant at redshift beyond unity
Jee, M. James; Joo, Hyungjin
Intracluster light (ICL) is diffuse light from stars that are gravitationally bound not to individual member galaxies, but to the halo of galaxy clusters. Leading theories1,2 predict that the ICL fraction, defined by the ratio of the ICL to the total light, rapidly decreases with increasing redshift, to the level of a few per cent at z …