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EMPRESS. VI. Outflows Investigated in Low-Mass Galaxies with : Weak Feedback in Low-Mass Galaxies?
Yi Xu, Masami Ouchi, Michael Rauch +10
We study emission line profiles of 21 nearby low-mass () galaxies in deep medium-high resolution spectra taken with Magellan/MagE. These low-mass galaxies ar…
Deciphering stellar metallicities in the early Universe: Case study of a young galaxy at z = 4.77 in the MUSE eXtremely Deep Field
Jorryt Matthee, Anna Feltre, Michael Maseda +8
Directly characterising the first generations of stars in distant galaxies is a key quest of observational cosmology. We present a case study of ID53 at z=4.77, the UV-brightest (b…
SILVERRUSH. XI. Intensity Mapping for Lya Emission Extending over comoving kpc around LAEs with Subaru HSC-SSP and CHORUS Data
Shotaro Kikuchihara, Yuichi Harikane, Masami Ouchi +14
We conduct intensity mapping to probe for extended diffuse Ly emission around Ly emitters (LAEs) at , exploiting very deep ( mag at ) and large-area ($\…
EMPRESS. IV. Extremely Metal-Poor Galaxies (EMPGs) Including Very Low-Mass Primordial Systems with M*=10^4--10^5 M_sun and 2--3% (O/H)_sun: High (Fe/O) Suggestive of Metal Enrichment by Hypernovae/Pair-Instability Supernovae
Yuki Isobe, Masami Ouchi, Akihiro Suzuki +22
We present Keck/LRIS follow-up spectroscopy for 13 photometric candidates of extremely metal poor galaxies (EMPGs) selected by a machine-learning technique applied to the deep (~26…
Catch Me if You Can: Biased Distribution of Ly-emitting Galaxies according to the Viewing Direction
Rieko Momose, Kazuhiro Shimasaku, Kentaro Nagamine +4
We report that Ly-emitting galaxies (LAEs) may not faithfully trace the cosmic web of neutral hydrogen (HI), but their distribution is likely biased depending on the viewing dir…
SILVERRUSH X: Machine Learning-Aided Selection of LAEs at , , , , , and from the HSC SSP and CHORUS Survey Data
Yoshiaki Ono, Ryohei Itoh, Takatoshi Shibuya +25
We present a new catalog of Ly emitter (LAE) candidates at , , , , , and that are photometrically selected by the SILVERRUSH program wi…
Constraining the cosmic UV background at z>3 with MUSE Lyman-α emission observations
Sofia G. Gallego, Sebastiano Cantalupo, Saeed Sarpas +10
The intensity of the Cosmic UV background (UVB), coming from all sources of ionising photons such as star-forming galaxies and quasars, determines the thermal evolution and ionizat…
Subaru Hyper Suprime-Cam excavates colossal over- and under-dense structures over 360 deg2 out to z=1
Rhythm Shimakawa, Yuichi Higuchi, Masato Shirasaki +8
Subaru Strategic Program with the Hyper-Suprime Cam (HSC-SSP) has proven to be successful with its extremely-wide area coverage in past years. Taking advantages of this feature, we…
The MUSE Extremely Deep Field: the Cosmic Web in Emission at High Redshift
Roland Bacon, David Mary, Thibault Garel +29
We report the discovery of diffuse extended Ly-alpha emission from redshift 3.1 to 4.5, tracing cosmic web filaments on scales of 2.5-4 comoving Mpc. These structures have been obs…
ALMA Lensing Cluster Survey: Bright [CII] 158 m Lines from a Multiply Imaged Sub- Galaxy at
Seiji Fujimoto, Masamune Oguri, Gabriel Brammer +31
We present bright [CII] 158 m line detections from a strongly magnified and multiply-imaged () sub- ( = ) Lyman-break gal…