Variability in Protoplanetary Nebulae. IX. Evidence for Evolution in a Decade - Hrivnak, Bruce J.; Lu, Wenxian; Bakke, William C.; Grimm, Peyton J. (The Astrophysical journal, 2022)
Keywords: Astrophysics; Carbon stars; Circumstellar dust; Cosmic dust; Evolved stars; High temperature; Late stellar evolution; Light curve; Multi-periodic variable stars; Nebulae; Opacity; Planetary evolution; Planetary nebulae; Post-asymptotic giant branch stars; Protoplanetary nebulae; Pulsating variable stars; Pulsation; Sky surveys (astronomy); Stars; Stellar evolution; Stellar pulsations; Supernovae; Variability