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Post-AGB Objects and Planetary Nebulae
Planetary nebulae and post-AGB objects are luminous dust emitters in the infrared. Indeed it is by virtue of their strong dust emission that most...
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Bipolar Nebula AFGL 2688 in the System of Post-AGB Star V1610 Cyg
AbstractWe present a survey of the results of photometric and spectral observations of a nebula AFGL 2688 in the system of post-AGB star V1610 Cyg....
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The Post-AGB Star IRAS 07253–2001: Pulsations, Long-Term Brightness Variability and Spectral Peculiarities
AbstractThe observations and comprehensive study of intermediate initial mass stars at the late stages of evolution, and after the asymptotic giant...
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Post-AGB stars as tracers of the origin of elements in the universe
The chemical evolution of galaxies is governed by the chemical yields from stars, especially from Asymptotic Giant Branch (AGB) stars. This...
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Adaptive Optics Science with the MMT Adaptive Secondary: Mid-IR AO Imaging of the Post-AGB Star AC Her
The world’s first adaptive secondary has been commissioned at the 6.5m MMT. Early science results suggests that it is unique and highly productive....
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Multicolor Photometry and Peculiarities of the Spectrum for the post-AGB Candidate AU Vulpeculae (IRAS 20160+2734)
AbstractWe present the results of a UBVRcIc and JHKLM photometric monitoring campaign conducted in 2016–2020, low-resolution spectroscopy, and an...
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K-band spectra of selected post-AGB candidates
We present medium resolution (1000) K-band spectra of 12 post-AGB candidates and related stars. For several objects in our sample, these spectra were...
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Instability in the System of the Distant Post-AGB Star LS III +52°24 (IRAS 22023+5249)
AbstractThe optical spectra of the B-supergiant LS III +52°24 (IRAS 22023+5249) obtained at the 6-m BTA telescope with a resolution
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Stars That Breathe
Stars which show a variation in their brightness are called variable stars. Pulsating variables are intrinsic variable stars whose brightness changes...
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Signatures of convection in the atmospheres of cool evolved stars
Evolved cool stars of various masses are major cosmic engines, delivering substantial mechanical and radiative feedback to the interstellar medium...
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Science with a Small Two-Band UV-Photometry Mission II: Observations of Stars and Stellar Systems
We outline the impact of a small two-band UV-photometry satellite mission on the field of stellar physics, magnetospheres of stars, binaries, stellar...
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Stars—Fundamentals of Their Physics
In this chapter, we provide an overview of the physics of stars and the parameters that describe them, such as mass, temperature, and density.
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The s process in massive stars, a benchmark for neutron capture reaction rates
A clear definition of the contribution from the slow neutron-capture process (s process) to the solar abundances between Fe and the Sr-Zr region is a...
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PAH emission features in star-forming regions and late type stars
Mid-infrared emission spectra, obtained from ISO archive, of thirteen astrophysical objects as well as computed spectra of 27 polycyclic aromatic...
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Recent advances in RV Tauri stars
The availability of multi-wavelength observations and parallaxes from the space missions and very comprehensive models of AGB evolution that include...
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Evolution and Pulsations of Population I Post-AGB Stars
Evolutionary calculations of population I stars with initial masses M 0 = 1 M ⊙ , 1.5 M ⊙ and 2 M ⊙ were carried out up to the stage of the...
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Circumbinary Planets Around Evolved Stars
The current state of evidence for planets around evolved star binaries is reviewed. The small sizes of compact evolved stars leads to sharp features...
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High-Resolution IR Spectroscopy of the Circumstellar Medium of AGB Stars
The evolution of a star on the asymptotic giant branch (AGB) is complex and fascinating, and our overall understanding of this phase is reasonably...
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Galactic Chemical Evolution, Astronomical Observation from Metal-Poor Stars to the Solar System
The nucleosynthesis in the universe is probed by observations of evolved stars and explosive events such as novae and supernovae that are yielding...