Results 101 to 110 of about 3,913,690 (210)

Why Do Stars Turn Red? [PDF]

When a star exhausts the hydrogen fuel in its core, the core contracts, and the envelope may expand to $\sim 100$ times its original size. Consequently, stars with $\lesssim 8$ solar masses become red giants, while those with $\gtrsim 8$ solar masses ...
Ou, Po-Sheng, Chen, Ke-Jung
core   +1 more source

3D Radiative Transfer Modeling of the Red Supergiant NML Cyg [PDF]

, 2021
Red supergiants are bright but cool massive stars that have depleted their core hydrogen supply and have started fusing heavier elements. These evolved stars ex perience a strong mass loss through a slow moving stellar wind that results in an extended ...
Hirvonen, Per
core  

Discovery of a Weak CN Spectral Absorption Feature in Red Supergiant Stars in the Andromeda (M31) and Triangulum (M33) Galaxies

The Astrophysical Journal
Using Keck DEIMOS spectra of stars in the Andromeda (M31) and Triangulum (M33) galaxies, selected from the large multiband (near-ultraviolet, visible light, and near-infrared) Hubble Space Telescope surveys PHAT and PHATTER, respectively, we have ...
Puragra Guhathakurta, Douglas Grion Filho, Antara R. Bhattacharya, Lara R. Cullinane, Julianne J. Dalcanton, Karoline M. Gilbert, Leo Girardi, Anika Kamath, Evan N. Kirby, Arya Maheshwari, Paola Marigo, Alexandra Masegian, Amanda C. N. Quirk, Rachel Raikar, Stanley M. Rinehart V, Caelum J. Rodriguez, Benjamin F. Williams   +16 more
doaj   +1 more source

Diffuse neutrino background from past core collapse supernovae. [PDF]

Proc Jpn Acad Ser B Phys Biol Sci, 2023
Ando S, Ekanger N, Horiuchi S, Koshio Y.
europepmc   +1 more source

The Hidden Clumps in VY CMa Uncovered by the Atacama Large Millimeter/submillimeter Array

The Astronomical Journal
The red hypergiant VY CMa is famous for its very visible record of high-mass-loss events. Recent CO observations with the Atacama Large Millimeter/submillimeter Array (ALMA) revealed three previously unknown large-scale outflows (Singh et al).
Roberta M. Humphreys, A. M. S. Richards, Kris Davidson, A. P. Singh, L. Decin, L. M. Ziurys   +5 more
doaj   +1 more source

Supernova shock breakout from a red supergiant

, 2008
Massive stars undergo a violent death when the supply of nuclear fuel in their cores is exhausted, resulting in a catastrophic "core-collapse" supernova. Such events are usually only detected at least a few days after the star has exploded.
Astier, Pierre, Fouchez, Dominique, Walker, E., Pritchet, Ch., Conley, A, Bell, T, Pritchet, C, Conley, Alex, Balam, D., Astier, P., Carlberg, R., Sullivan, M., Fouchez, D., Carlberg, Ray, Guy, J, Hook, Isobel, Podsiadlowski, Philipp, Röser, HJ, Perrett, Kathy, Yi, Sukyoung K., Conley, A., Justham, S., C. Steenbrugge, K., Walker, ES, Schawinski, K., Regnault, N., Justham, S, Pritchet, Chris, Hook, I., Howell, D. Andrew, Roser, H.-J., Pain, Reynald, Howell, DA, Steenbrugge, KC, Bell, T., Walker, Emma S., Yi, SK, Balland, C, Regnault, Nicolas, Perrett, K., Balam, D, Hook, I, Guy, Julien, Steenbrugge, K. C., Howell, A., Balland, Ch., Wolf, C, Hardin, D., Sullivan, M, Hardin, D, Perrett, K, K. Yi, S., Pain, R, Wolf, Christian, Röser, H-J, Yi, S. K., Podsiadlowski, Ph., Astier, P, Sullivan, Mark, Balam, Dave, Podsiadlowski, P, Justham, Stephen, Röser, Hermann-Josef, Regnault, N, Schawinski, Kevin, Schawinski, K, Basa, S., Steenbrugge, Katrien C., Pain, R., Bell, Tony, Balland, Christophe, Carlberg, R, Hardin, Delphine, Fouchez, D, Guy, J., Steenbrugge, Katrien C, Walker, Emma S   +76 more
core   +2 more sources

Red Supergiant Mass Loss and Mass-Loss Rates

Galaxies
This review discusses the causes, nature, importance and observational evidence of mass loss by red supergiants. It arrives at the perception that mass loss finds its origin in the gravity which makes the star a star in the first place, and is a ...
Jacco Th. van Loon
doaj   +1 more source

Dust in and Around the Heliosphere and Astrospheres. [PDF]

Space Sci Rev, 2022
Sterken VJ, Baalmann LR, Draine BT, Godenko E, Herbst K, Hsu HW, Hunziker S, Izmodenov V, Lallement R, Slavin JD.   +9 more
europepmc   +1 more source

Hiding in plain sight - red supergiant imposters? Super-AGB stars

Super Asymptotic Giant Branch (Super-AGB) stars reside in the mass range ˜ 6.5-10 M¿ and bridge the divide between low/intermediate-mass and massive stars.
Siess, Lionel, Gil Pons, Pilar, Doherty, Carolyn L., Lattanzio, John C.   +3 more
core  

Observations of red‐giant variable stars by Aboriginal Australians

, 2017
Aboriginal Australians carefully observe the properties and positions of stars, including both overt and subtle changes in their brightness, for subsistence and social application. These observations are encoded in oral tradition.
Duane W. Hamacher, Hamacher, Duane W.
core   +1 more source