339 citations · 940 across the 17 of their papers we have counts for
17 papers
Extreme Ionizing Properties of Metal-Poor, Muv ~ -12 Star Complex in the first Gyr
E. Vanzella, F. Loiacono, M. Messa +38
We report the serendipitous discovery of a faint (M_UV > -12.2), low-metallicity (Z ~ 0.02 Zsun), ionizing source (dubbed T2c) with a spectroscopic redshift of z=6.146. T2c is part…
Augmenting the power of time-delay cosmography in lens galaxy clusters by probing their member galaxies. II. Cosmic chronometers
P. Bergamini, S. Schuldt, A. Acebron +9
We present a novel approach to measuring the expansion rate and the geometry of the Universe, which combine time-delay cosmography in lens galaxy clusters with pure samples of 'cos…
Augmenting the power of time-delay cosmography in lens galaxy clusters by probing their member galaxies I. Type Ia supernovae
A. Acebron, S. Schuldt, C. Grillo +9
We present a simple and promising new method to measure the expansion rate and the geometry of the universe that combines observations related to the time delays between the multip…
UV-continuum slopes of individual clumps and their evolution
A. Bolamperti, A. Zanella, U. Meštrić +11
We study the ultraviolet (UV) continuum slope of a sample of 166 clumps, individual star-forming regions observed in high redshift galaxies. They are hosted by 67 galaxies with…
An extremely metal poor star complex in the reionization era: Approaching Population III stars with JWST
E. Vanzella, F. Loiacono, P. Bergamini +31
We present JWST/NIRSpec integral field spectroscopy (IFS) of a lensed Population III candidate stellar complex (dubbed Lensed And Pristine 1, LAP1), with a lensing-corrected stella…
Clues on the presence and segregation of very massive stars in the Sunburst Lyman-continuum cluster at z=2.37
U. Mestric, E. Vanzella, A. Upadhyaya +15
We report the identification of very massive stars (VMS; mass \,\msun) that may be segregated in the center of the young massive star cluster at =2.37 hosted in the lense…
A state-of-the-art strong lensing model of MACS J0416.1-2403 with the largest sample of spectroscopic multiple images
P. Bergamini, C. Grillo, P. Rosati +9
The combination of multi-band imaging from HST with MUSE integral field spectroscopy, obtained at the VLT, has recently driven remarkable progress in strong lensing (SL) modeling o…
Early results from GLASS-JWST. VII: evidence for lensed, gravitationally bound proto-globular clusters at z=4 in the Hubble Frontier Field A2744
E. Vanzella, M. Castellano, P. Bergamini +29
We investigate the blue and optical rest-frame sizes (lambda~2300A-4000A) of three compact star-forming regions in a galaxy at z=4 strongly lensed (x30, x45, x100) by the Hubble Fr…
Science Cases for the Keck Wide-Field Imager
J. Cooke, C. Angus, K. Auchettl +22
The Keck Wide-Field Imager (KWFI) is a proposed 1-degree diameter field of view UV-sensitive optical camera for Keck prime focus. KWFI will be the most powerful optical wide-field…
Early results from GLASS-JWST. III: Galaxy candidates at z9-15
Marco Castellano, Adriano Fontana, Tommaso Treu +27
We present the results of a first search for galaxy candidates at z9--15 on deep seven-bands NIRCam imaging acquired as part of the GLASS-JWST Early Release Science Program o…
A Cautionary Tale of LyC Escape Fraction Estimates from High Redshift Galaxies
R. Bassett, E. V. Ryan-Weber, J. Cooke +7
Measuring the escape fraction, , of ionizing, Lyman Continuum (LyC) radiation is key to our understanding of the process of cosmic reionization. In this paper we provi…
Exploring the physical properties of lensed star-forming clumps at
U. Meštrić, E. Vanzella, A. Zanella +12
We study the physical properties (size, stellar mass, luminosity, star formation rate) and scaling relations for a sample of 166 star-forming clumps with redshift . T…
Lyman Continuum Galaxy Candidates in COSMOS
Laura J. Prichard, Marc Rafelski, Jeff Cooke +11
Star-forming galaxies are the sources likely to have reionized the universe. As we cannot observe them directly due to the opacity of the intergalactic medium at , we st…
High star cluster formation efficiency in the strongly lensed Sunburst Lyman-continuum galaxy at z=2.37
E. Vanzella, M. Castellano, P. Bergamini +16
We investigate the strongly lensed (μx10-100) Lyman continuum (LyC) galaxy, dubbed Sunburst, at z=2.37, taking advantage of a new accurate model of the lens. A characterization of…
Outside the Lyman-break box: detecting Lyman continuum emitters at with CLAUDS
Uroš Meštrić, E. V. Ryan-Weber, J. Cooke +12
Identifying non-contaminated sample of high-redshift galaxies with escaping Lyman continuum (LyC) flux is important for understanding the sources and evolution of cosmic reionizati…
On the Lack of Correlation Between [OIII]/[OII] and Lyman-Continuum Escape Fraction
R. Bassett, E. V. Ryan-Weber, J. Cooke +9
We present the first results of our pilot study of 8 photometrically selected Lyman continuum (LyC) emitting galaxy candidates from the COSMOS field and focus on their optical emis…
Galaxy And Mass Assembly (GAMA): the Stellar Mass Budget by Galaxy Type
Amanda J. Moffett, Stephen A. Ingarfield, Simon P. Driver +16
We report an expanded sample of visual morphological classifications from the Galaxy and Mass Assembly (GAMA) survey phase two, which now includes 7,556 objects (previously 3,727 i…