353 citations · 1.9k across the 40 of their papers we have counts for
40 papers
Puzzling radial gradients of K-band absorption features in the giant elliptical galaxy M87
F. La Barbera, A. Vazdekis, A. Pasquali +8
We present new K-band spectroscopy for the giant elliptical galaxy M87 in the Virgo cluster, taken with the LUCI spectrograph at the Large Binocular Telescope (LBT). The new data a…
Gas properties as a function of environment in the proto-supercluster Hyperion at z ~ 2.45
G. Gururajan, O. Cucciati, B. C. Lemaux +26
The cosmic star-formation rate density, molecular gas density and the AGN activity of the Universe peak at z~ 2-3, showing the Universe is most active at this epoch. The nature of…
The HST-Hyperion Survey: Companion Fraction and Overdensity in a z ~ 2.5 Proto-supercluster
F. Giddings, B. C. Lemaux, B. Forrest +22
We present a study of the galaxy merger and interaction activity within the Hyperion Proto-supercluster at z~2.5 in an effort to assess the occurrence of galaxy mergers and interac…
Galaxy Spectra Networks (GaSNet). III. Generative pre-trained network for spectrum reconstruction, redshift estimate and anomaly detection
Fucheng Zhong, Nicola R. Napolitano, Caroline Heneka +11
Classification of spectra (1) and anomaly detection (2) are fundamental steps to guarantee the highest accuracy in redshift measurements (3) in modern all-sky spectroscopic surveys…
Discovering Large-Scale Structure at in the C3VO Survey
Denise Hung, Brian C. Lemaux, Olga Cucciati +23
The Charting Cluster Construction with VUDS and ORELSE (C3VO) survey is an ongoing imaging and spectroscopic campaign aiming to map out the growth of structure up to and w…
Enhanced AGN Activity in Overdense Galactic Environments at
Ekta A. Shah, Brian C. Lemaux, Benjamin Forrest +17
We conduct a study on the relationship between galaxy environments and their active galactic nuclei (AGN) activity at high redshifts (). Specifically, we study the AGN f…
Retrieval of the physical parameters of galaxies from WEAVE-StePS-like data using machine learning
J. Angthopo, B. R. Granett, F. La Barbera +46
The WHT Enhanced Area Velocity Explorer (WEAVE) is a new, massively multiplexing spectrograph. This new instrument will be exploited to obtain high S/N spectra of 25000 galax…
Environmental Effects on the Stellar Mass Function in a z~3.3 Overdensity of Galaxies in the COSMOS Field
Ben Forrest, Brian C. Lemaux, Ekta A. Shah +17
We present an analysis of the number density of galaxies as a function of stellar mass (i.e., the stellar mass function, SMF) in the COSMOS field at z~3.3, making a comparison betw…
Protoclusters as Drivers of Stellar Mass Growth in the Early Universe, a Case Study: Taralay -- a Massive Protocluster at z ~ 4.57
Priti Staab, Brian C. Lemaux, Ben Forrest +26
Simulations predict that the galaxy populations inhabiting protoclusters may contribute considerably to the total amount of stellar mass growth of galaxies in the early universe. I…
Galaxy Spectra neural Network (GaSNet). II. Using Deep Learning for Spectral Classification and Redshift Predictions
Fucheng Zhong, Nicola R. Napolitano, Caroline Heneka +25
Large sky spectroscopic surveys have reached the scale of photometric surveys in terms of sample sizes and data complexity. These huge datasets require efficient, accurate, and fle…
Stellar metallicity from optical and UV spectral indices: Test case for WEAVE-StePS
F. R. Ditrani, M. Longhetti, F. La Barbera +35
The upcoming generation of optical spectrographs on four meter-class telescopes, with their huge multiplexing capabilities, excellent spectral resolution, and unprecedented wavelen…
Elentári: A Proto-Supercluster in COSMOS
Ben Forrest, Brian C. Lemaux, Ekta Shah +25
Motivated by spectroscopic confirmation of three overdense regions in the COSMOS field at , we analyze the uniquely deep multi-wavelength photometry and extensive spectr…
WEAVE-StePS. A stellar population survey using WEAVE at WHT
A. Iovino, B. M. Poggianti, A. Mercurio +44
The upcoming new generation of optical spectrographs on four-meter-class telescopes will provide valuable opportunities for forthcoming galaxy surveys through their huge multiplexi…
A powerful (and likely young) radio-loud quasar at z=5.3
S. Belladitta, A. Moretti, A. Caccianiga +5
We present the discovery of PSO J191.0569686.43172 (hereafter PSO J19186), a new powerful radio-loud quasar (QSO) in the early Universe (z = 5.32). We discovered it by cross-…
SFR estimations from z=0 to z=0.9 -- A comparison of SFR calibrators for star-forming galaxies
M. Figueira, A. Pollo, K. Małek +7
Using VIPERS, we estimated a set of SFR based on photometric and spectroscopic data. We used, as estimators, photometric bands from ultraviolet to mid-infrared, and spectral lines.…
Evaluating Lya Emission as a Tracer of the Largest Cosmic Structure at z~2.47
Yun Huang, Kyoung-Soo Lee, Olga Cucciati +13
The discovery and spectroscopic confirmation of Hyperion, a proto-supercluster at z~2.47, provides an unprecedented opportunity to study distant galaxies in the context of their la…
The central engine of the highest redshift blazar
Silvia Belladitta, Alessandro Caccianiga, Alessandro Diana +8
We report on a LUCI/Large Binocular Telescope near-infrared (NIR) spectrum of PSO J030947.49+271757.31 (hereafter PSO J0309+27), the highest redshift blazar known to date (z6…
The Type II AGN-host galaxy connection: insights from the VVDS and VIPERS surveys
G. Vietri, B. Garilli, M. Polletta +16
We present a study of optically-selected Type II AGN at 0.5 < z < 0.9 from the VIPERS and VVDS surveys, to investigate the connection between AGN activity and physical properties o…
Redshift identification of X-ray selected active galactic nuclei in the J1030 field: searching for large-scale structures and high-redshift sources
Stefano Marchesi, Marco Mignoli, Roberto Gilli +23
We publicly release the spectroscopic and photometric redshift catalog of the sources detected with Chandra in the field of the =6.3 quasar SDSS J1030+0525. This is currently th…
The web of the Giant: spectroscopic confirmation of a Large Scale Structure around the z=6.31 quasar SDSS J1030+0524
Marco Mignoli, Roberto Gilli, Roberto Decarli +14
We report on the spectroscopic confirmation of a large scale structure around the luminous, z=6.31 QSO SDSS~J1030+0524, that is powered by a billion solar mass black hole. The stru…
The VIMOS Ultra-Deep Survey: the Ly emission line morphology at
B. Ribeiro, O. Le Fèvre, A. Paulino-Afonso +20
The Lyman- (Ly) emission line has been ubiquitously used to confirm and study high redshift galaxies. We report on the line morphology as seen in the 2D spectra from the VIMO…
The first blazar observed at z>6
S. Belladitta, A. Moretti, A. Caccianiga +9
We present the discovery of PSO J030947.49+271757.31, the radio brightest (23.7 mJy at 1.4 GHz) active galactic nucleus (AGN) at z>6.0. It was selected by cross-matching the NRAO V…
The most massive, passive, and oldest galaxies at 0.5 < z < 2.1: Downsizing signature from galaxies selected from MgUV index
R. Thomas, O. Le Fèvre, G. Zamorani +10
Aims. We seek is to identify old and massive galaxies at 0.5<z<2.1 on the basis of the magnesium index MgUV and then study their physical properties. We computed the MgUV index bas…
The UV and Ly Luminosity Functions of galaxies and the Star Formation Rate Density at the end of HI reionization from the VIMOS Ultra-Deep Survey (VUDS)
Y. Khusanova, O. Le Fèvre, P. Cassata +25
We establish a robust statistical description of the star-forming galaxy population at the end of cosmic HI reionization () from a large sample of 52 galaxies with…