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Solar Irradiance Variability, Influenced by r Modes
Wolff, Charles L.
A spectrum of the four-decade solar irradiance record has a prominent cluster of power for periodicities near 1 yr. Correlating irradiance with a bandpass filter showed that periodicity values were not constant, but varied sinusoidally with each cycle lasting 14 ± 1 yr. The large modulation amplitude makes solar frequencies ≥1 yr-1 hard…
Hints of the Existence of C-rich Massive Evolved Stars
Cernicharo, José; Agúndez, Marcelino; Quintana-Lacaci, Guillermo +6 more
We aim to study the properties of a particular type of evolved stars, C-rich evolved stars with high expansion velocities. For this purpose we have focused on the two best studied objects within this group, IRC+10401 and AFGL 2233. We focused on determining their luminosity by studying their spectral energy distribution. Also, we have obtained sin…