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Deep Narrowband Photometry of the M101 Group: Strong-line Abundances of 720 H ii Regions
(2022-12-22)
We present deep, narrowband imaging of the nearby spiral galaxy M101 and its satellites to analyze the oxygen abundances of their H ii regions. Using Case Western Reserve University’s Burrell Schmidt telescope, we add to ...
The X–shooter/ALMA Sample of Quasars in the Epoch of Reionization. II. Black Hole Masses, Eddington Ratios, and the Formation of the First Quasars
(2022-12-20)
We present measurements of black hole masses and Eddington ratios (λ Edd) for a sample of 38 bright (M 1450 < −24.4 mag) quasars at 5.8 ≲ z ≲ 7.5, derived from Very Large Telescope/X-shooter near-IR spectroscopy of their ...
Extragalactic Peaked-Spectrum Radio Sources at Low-Frequencies are Young Radio Galaxies
(2022-12-20)
We present a sample of 373 peaked-spectrum (PS) sources with spectral peaks around 150 MHz, selected using a subset of the two LOw Frequency ARray (LOFAR) all-sky surveys, the LOFAR Two Meter Sky Survey and the LOFAR LBA ...
The JCMT BISTRO-2 Survey: Magnetic Fields of the Massive DR21 Filament
(2022-12-20)
We present 850 μm dust polarization observations of the massive DR21 filament from the B-fields In STar-formingRegion Observations (BISTRO) survey, using the POL-2 polarimeter and the SCUBA-2 camera on the JamesClerk Maxwell ...
TRENDS AND PROSPECTS OF DIGITAL TWIN TECHNOLOGIES: A REVIEW
(2022-12-18)
The plethora of technologically developed software and digital types of machinery are widely applied for industrial production and the digitalization of building technologies. The fourth industrial revolution and the ...
Ginger waste as a potential feedstock for a zero-waste ginger biorefinery: a review
(2022-12-16)
Ginger consumption and its use in industrial applications such as essential oil and oleoresin extraction are growing globally. There will be increased volumes of ginger waste (rhizomes, stems and leaves) in the coming ...
Central Star Formation in Early-type Galaxy I Zw 81 in the Bootes Void
(2022-12-16)
The origin of star formation in customarily passively evolving early-type massive galaxies is poorly understood. We present a case study of a massive galaxy, I Zw 81, inside the Bootes void. The void galaxy is known to ...
The Host Galaxies of Hybrid Morphology Radio Sources
(2022-12-16)
Based on their differing radio morphologies, powerful radio galaxies can be separated into the Fanaroff-Riley I (FR I) and II (FR II) classes. Hybrid morphology radio sources (HyMoRS) contain morphologies consistent with ...
Experimental Study on Temperature Control Optimization of Ground Source Heat Pump Horizontal Headers
(2022-12-15)
The energy loss of ground source heat pump horizontal headers cannot be ignored. Based on the similarity theory and the principle of the orthogonal test, a sandbox experiment platform was built to study the temperature ...
Ultra-endurance Participation and Acute Kidney Injury: A Narrative Review
(2022-12-15)
Increasingly popular, ultra-endurance participation exposes athletes to extremely high levels of functional and structural damage. Ultra-endurance athletes commonly develop acute kidney in-jury (AKI) and other pathologies ...