Dobs Smash Up! A bunch of my favorite views from the past few months!
https://youtube.com/shorts/0e8_HfzFMaw?si=KE8HOlSeGUXZBfze
#moon
#astronomy
#moon
#saturn
#sun
#jupiter
#orionnebula
#orionconstellation
#lunarpics
#photography
#astrophotography
#smartphoneastronomy
The Orion constellation appears in this frame through tiny elder flowers. Then comes the night and a switch allows you to make it glow like in winter nights. This frame will adorn your walls or will be displayed on your furniture to bring it a magical celestial touch. Batteries included
Discover Orion: The Hunter in the Night Sky 🌌
Orion is one of the most recognizable constellations, visible from both hemispheres. Named after the legendary hunter from Greek mythology, it dominates the winter sky in the Northern Hemisphere and the summer sky in the Southern Hemisphere.
Image credit: @akira Fujii
Orion Constellation in the Night Sky
#photography
#ttartisan
#ttartisan10mmf2
#OrionConstellation
#NightSky
#AstroPhotography
#StarryNight
#Stargazing
#Constellations
#Orion
#NightPhotography
#CosmicView
#SkyAtNight
The evolutionary stage of #Betelgeuse inferred from its pulsation periods
Betelgeuse is a well known bright red supergiant that shows semi-regular variations with four approximate periods of 2200, 420, 230, and 185 days. While the longest period was customarily regarded as LSP (long secondary period) of unknown origin, we identify the ~2200-d period as the radial fundamental mode, and the three shorter periods as the radial first, second, and third overtones. From a nonadiabatic pulsation analysis including the pulsation/convection coupling, we have found that these radial pulsation modes are all excited in the envelope of a model in a late stage of the core-carbon burning. Models with similar pulsation property have masses around 11M_\odot (19M_\odot at ZAMS) with luminosities (log L/L_\odot =5.27~5.28) and effective temperatures (log T_{eff}\approx 3.53) that are consistent with the range of the observational determinations. We also find that a synthetic light curve obtained by adding the fundamental and the first-overtone mode qualitatively agrees with the light curve of Betelgeuse up to the Great Dimming. We conclude that Betelgeuse is in the late stage of core carbon burning, and a good candidate for the next Galactic supernova.
Dobviews
Frank Adler
Rafael "Tchulanguero" Paes
Nature Spells - Fanny
Pomaranč
JD Gadina 🦄
formuchdeliberation
keadamander
ℵ₀ 🏳️⚧️🏴☠️