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A catalogue of masses, structural parameters, and velocity dispersion profiles of 112 Milky Way globular clusters
Hilker, M.; Baumgardt, H.
We have determined masses, stellar mass functions, and structural parameters of 112 Milky Way globular clusters by fitting a large set of N-body simulations to their velocity dispersion and surface density profiles. The velocity dispersion profiles were calculated based on a combination of more than 15000 high-precision radial velocities which we …
Low-redshift Lyman continuum leaking galaxies with high [O III]/[O II] ratios
Schaerer, D.; Thuan, T. X.; Izotov, Y. I. +4 more
We present observations with the Cosmic Origins Spectrograph (COS) onboard the Hubble Space Telescope of five star-forming galaxies at redshifts z in the range 0.2993-0.4317 and with high emission-line flux ratios O32 = [O III] λ5007/[O II] λ3727 ∼ 8-27 aiming to detect the Lyman continuum (LyC) emission. We detect LyC emission in all g…
The outflow structure of GW170817 from late-time broad-band observations
Troja, E.; Piro, L.; van Eerten, H. +6 more
We present our broad-band study of GW170817 from radio to hard X-rays, including NuSTAR and Chandra observations up to 165 d after the merger, and a multimessenger analysis including LIGO constraints. The data are compared with predictions from a wide range of models, providing the first detailed comparison between non-trivial cocoon and jet model…
J1154+2443: a low-redshift compact star-forming galaxy with a 46 per cent leakage of Lyman continuum photons
Schaerer, D.; Thuan, T. X.; Izotov, Y. I. +5 more
We report the detection of the Lyman continuum (LyC) radiation of the compact star-forming galaxy (SFG) J1154+2443 observed with the Cosmic Origins Spectrograph (COS) onboard the Hubble Space Telescope. This galaxy, at a redshift of z = 0.3690, is characterized by a high emission-line flux ratio O32 = [O III] λ5007/[O II] λ3727 = 11.5. …
The extreme faint end of the UV luminosity function at z ∼ 6 through gravitational telescopes: a comprehensive assessment of strong lensing uncertainties
Richard, Johan; Schaerer, Daniel; Kneib, Jean-Paul +1 more
With the Hubble Frontier Fields program, gravitational lensing has provided a powerful way to extend the study of the ultraviolet luminosity function (LF) of galaxies at z ∼ 6 down to unprecedented magnitude limits. At the same time, significant discrepancies between different studies were found at the very faint end of the LF. In an attempt to un…
Dark Energy Survey Year 1 results: weak lensing shape catalogues
Benoit-Lévy, A.; Bechtol, K.; Smith, M. +105 more
We present two galaxy shape catalogues from the Dark Energy Survey Year 1 data set, covering 1500 deg2 with a median redshift of 0.59. The catalogues cover two main fields: Stripe 82, and an area overlapping the South Pole Telescope survey region. We describe our data analysis process and in particular our shape measurement using two in…
A detached stellar-mass black hole candidate in the globular cluster NGC 3201
Brinchmann, Jarle; Weilbacher, Peter M.; Kamann, Sebastian +7 more
As part of our massive spectroscopic survey of 25 Galactic globular clusters with MUSE, we performed multiple epoch observations of NGC 3201 with the aim of constraining the binary fraction. In this cluster, we found one curious star at the main-sequence turn-off with radial velocity variations of the order of 100 km s- 1, indicating th…
The [C II] emission as a molecular gas mass tracer in galaxies at low and high redshifts
Daddi, E.; Elbaz, D.; Dickinson, M. +19 more
We present ALMA Band 9 observations of the [C II]158 µm emission for a sample of 10 main-sequence galaxies at redshift z ∼ 2, with typical stellar masses (log M⋆/M⊙ ∼ 10.0-10.9) and star formation rates (∼35-115 M⊙ yr-1). Given the strong and well-understood evolution of the interstellar medium fro…
GAMA/G10-COSMOS/3D-HST: the 0 < z < 5 cosmic star formation history, stellar-mass, and dust-mass densities
Wilkins, Stephen M.; Holwerda, Benne; Conselice, Christopher J. +30 more
We use the energy-balance code MAGPHYS to determine stellar and dust masses, and dust corrected star formation rates for over 200 000 GAMA galaxies, 170 000 G10-COSMOS galaxies, and 200 000 3D-HST galaxies. Our values agree well with previously reported measurements and constitute a representative and homogeneous data set spanning a broad range in…
A stellar census in globular clusters with MUSE: The contribution of rotation to cluster dynamics studied with 200 000 stars
Dreizler, S.; Roth, M. M.; Kamann, S. +10 more
This is the first of a series of papers presenting the results from our survey of 25 Galactic globular clusters with the MUSE integral-field spectrograph. In combination with our dedicated algorithm for source deblending, MUSE provides unique multiplex capabilities in crowded stellar fields and allows us to acquire samples of up to 20 000 stars wi…