000007897 001__ 7897
000007897 005__ 20260204094641.0
000007897 100__ $$aLobel, A.
000007897 245__ $$aNew Insights into the Mysterious Yellow Hypergiant Stars Outbursts
000007897 260__ $$c2025
000007897 269__ $$c2025-02-17
000007897 500__ $$aAstronomy & Astrophysics, 2025, 694, A136 https://doi.org/10.1051/0004-6361/202449384 Title: Investigation of the pulsations, outbursts, and evolution of the Yellow Hypergiants: Rho Cas, HR 8752, HR 5171A, with notes on HD 179821 Authors: M. van Genderen, A. Lobel, R. Timmerman, E. R. Deul, A. Vos, H. Nieuwenhuijzen†, E. J. van Ballegoij, M. Sblewski, G. W. Henry, E. Blown, and G. Di Scala
000007897 520__ $$aA recent five-year study has uncovered new insights into the properties of Yellow Hypergiants, a heavy star class known for their dramatic outbursts. Scientists focused on Rho Cassiopeiae (Rho Cas), HR 8752, and HR 5171A, revealing that Rho Cas exhibits cyclical outbursts every 10 to 40 years, with large fluctuations of its surface temperature. Alex Lobel from the Royal Observatory of Belgium (ROB) was part of this international study that combined historical data covering 138 years. The results, published in Astronomy and Astrophysics, show that vigorous pulsations trigger these massive eruptions. They also offer a clearer understanding of the Yellow Hypergiants’ fast evolution and their potential transformation into Luminous Blue Variable stars or explosive supernovae.
000007897 536__ $$aHorizon2020/$$cNo.823734/$$fEC-POEMS
000007897 594__ $$aNO
000007897 6531_ $$ahypergiants
000007897 6531_ $$aoutbursts
000007897 8560_ $$falex.lobel@ksb-orb.be
000007897 85642 $$ahttps://www.astro.oma.be/en/new-insights-into-the-mysterious-yellow-hypergiant-stars-outbursts/
000007897 85642 $$ahttps://brass.heliohost.org/alobel/pressrel2025.html
000007897 980__ $$aPRESSREL