Detection of Rydberg Lines from the Atmosphere of Betelgeuse by W. R. F. Dent, G. M. Harper, A. M. S. Richards, P. Kervella, L. D. Matthews

“…Emission lines from Rydberg transitions are detected for the first time from a region close to the surface of Betelgeuse. The H30 α line is observed at 231.905 GHz, with an FWHM ∼42 km s ^−1 and extended wings. …”
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Spectroscopic evidence for a large spot on the dimming Betelgeuse by Sofya Alexeeva, Gang Zhao, Dong-Yang Gao, Junju Du, Aigen Li, Kai Li, Shaoming Hu

“…The reason of the dimming of Betelgeuse is debated. Here, the authors show effective temperature decrease that can be explained by a large spot.…”
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Radial Velocity and Astrometric Evidence for a Close Companion to Betelgeuse by Morgan MacLeod, Sarah Blunt, Robert J. De Rosa, Andrea K. Dupree, Thomas Granzer, Graham M. Harper, Caroline D. Huang, Emily M. Leiner, Abraham Loeb, Eric L. Nielsen, Klaus G. Strassmeier, Jason J. Wang, Michael Weber

“…We examine a century of radial velocity, visual magnitude, and astrometric observations of the nearest red supergiant, Betelgeuse, in order to reexamine the century-old assertion that Betelgeuse might be a spectroscopic binary. …”
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Betelgeuse as a Merger of a Massive Star with a Companion by Sagiv Shiber, Emmanouil Chatzopoulos, Bradley Munson, Juhan Frank

“…In certain cases, the post-merger star exhibits persistent rapid equatorial surface rotation as it evolves in the H – R diagram toward the observed location of Betelgeuse. These cases demonstrate surface rotation velocities of a similar magnitude to those observed in Betelgeuse, along with a chemical composition resembling that of Betelgeuse. …”
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A Buddy for Betelgeuse: Binarity as the Origin of the Long Secondary Period in α Orionis by Jared A. Goldberg, Meridith Joyce, László Molnár

“…We predict the existence of α Ori B, a low-mass companion orbiting Betelgeuse. This is motivated by the presence of a 2170 day long secondary period (LSP) in Betelgeuse’s lightcurve, a periodicity that is ≈5 times longer than the star’s 416 day fundamental radial pulsation mode. …”
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Is Betelgeuse Really Rotating? Synthetic ALMA Observations of Large-scale Convection in 3D Simulations of Red Supergiants by Jing-Ze Ma, Andrea Chiavassa, Selma E. de Mink, Ruggero Valli, Stephen Justham, Bernd Freytag

“…The evolved stages of massive stars are poorly understood, but invaluable constraints can be derived from spatially resolved observations of nearby red supergiants, such as Betelgeuse. Atacama Large Millimeter/submillimeter Array (ALMA) observations of Betelgeuse showing a dipolar velocity field have been interpreted as evidence for a projected rotation rate of about 5 km s ^−1 . …”
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Left Ringing: Betelgeuse Illuminates the Connection between Convective Outbursts, Mode Switching, and Mass Ejection in Red Supergiants by Morgan MacLeod, Andrea Antoni, Caroline D. Huang, Andrea Dupree, Abraham Loeb

“…Betelgeuse, the nearest red supergiant, dimmed to an unprecedented level in early 2020. …”
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Stellar astronomy of the Bronze Age sanctuaries in North Khakassia by Larichev, V.E., Gienko, E.G., Parshikov, S.A.

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RESULTS OF OBSERVATIONS OF V1081 TAU AND A NEW EA TYPE VARIABLE STAR BD+23°770 IN THE TAURUS by I. S. Bryukhanov, G. V. Vereshchagin

“…The stars V1081 Tau = NSV 1702 and BD+23°440 (GSC 1832.1631) are found tobe EA-type eclipsing variables with the elements 2449215.51+1.0078 x E and 2448597.342+1.95558 x E based on 142 Ipv negatives of the "Betelgeuse" collection.…”
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THE DETERMINATION OF PERIODS AND THE DEFINITION OF VARIABILITY TYPE OF NEW VARIABLE STAR IRAS 17583+5150 by A. P. Solonovich, I. S. Bryukhanov

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OBSERVATIONS OF VARIABLE STARS WITH SMALL TELESCOPES by I. S. Bryukhanov

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Presupernova neutrino signals as potential probes of neutrino mass hierarchy by Gang Guo, Yong-Zhong Qian, Alexander Heger

“…For determination at this level using such signals from Betelgeuse, which is at a distance of ≈222 pc, the uncertainty in the predicted number of signals needs to be ≲14–30%. …”
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Development of a Data Overflow Protection System for Super-Kamiokande to Maximize Data from Nearby Supernovae by Mori, M, Abe, K, Hayato, Y, Hiraide, K, Hosokawa, K, Ieki, K, Ikeda, M, Kameda, J, Kanemura, Y, Kaneshima, R, Kashiwagi, Y, Kataoka, Y, Miki, S, Mine, S, Miura, M, Moriyama, S, Nakano, Y, Nakahata, M, Nakayama, S, Noguchi, Y, Okamoto, K, Sato, K, Sekiya, H, Shiba, H, Barr, G, Barrow, D, Cook, L, Samani, S, Wark, D

“…Neutrinos from very nearby supernovae, such as Betelgeuse, are expected to generate more than ten million events over 10 s in Super-Kamokande (SK). …”

NSV 05513 = 69 (Δ) UMA A LONG PERIODIC ECLIPSING VARIABLE? by I. S. Bryukhanov, V. M. Askirko

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Extrasolar planets and possibility of the life appearance by I. Kuzenkov, B. Ivashyn, I. S. Bryukhanov, M. Barinov

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THE INVESTIGATION OF THE CLASSICAL CEPHEID RT Aur PERIOD by A. S. Kosinsky, V. G. Tamello, I. J. Kushmar, I. S. Bryukhanov, A. S. Semenyuta, I. I. Balyuk

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BM ERI - SR-TYPE VARIABLE STAR by I. S. Brukhanov

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BD +20°1171 - LONG - PERIODIC VARIABLE STAR by I. S. Brukhanov

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«A pezzi. A pezzetti. A pezzettini»: the anecdote in contemporary Italian poetry by Giuliana Pala

“…After introducing the notion of short forms (Montandon, 2001) or simple forms (Jolles, 1930) we will focus on the anecdote’s features and its use within three collections of contemporary Italian poetry, respectively: Le fuggitive by Carmen Gallo, Fuoco degli occhi by Marilena Renda and Betelgeuse e altre poesie scientifiche by Franco Buffoni.…”
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SOME RESULTS OF THE U CrB OBSERVATIONS IN 1856 - 2007 by V. D. Grigorenko, S. A. Gadon, S. E. Shurpakov, I. S. Bryukhanov

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