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Observing the stars in our night sky tells us that giant, supergiant and hypergiant stars hold an unique importance in the understanding of stellar populations. Theoretical stellar models predict a rich tapestry of evolved stars. These…

Solar and Stellar Astrophysics · Physics 2025-07-10 Lee R. Patrick

Asteroseismology, as a tool to use the indirect information contained in stellar oscillations to probe the stellar interiors, is an active field of research presently. Stellar age, as a fundamental property of star apart from its mass, is…

Astrophysics · Physics 2009-11-13 Y. K. Tang , S. L. Bi , N. Gai

Stellar magnetic activity is governed by the interplay between rotation, convection, and the evolution of surface magnetic structures, yet the role of planetary systems in shaping these processes remains uncertain. Here, we analyze…

Solar and Stellar Astrophysics · Physics 2026-05-27 Alexandre Araújo , Adriana Valio

Understanding stellar composition is fundamental not only to our comprehension of the galaxy, especially chemical evolution, but it can also shed light on the interior structure and mineralogy of exoplanets, which are formed from the same…

Earth and Planetary Astrophysics · Physics 2022-11-30 Natalie R. Hinkel , Patrick A. Young , Caleb H. Wheeler

I review the major open science questions in exoplanet atmospheres. These are mainly focused in the areas of understanding atmospheric physics, the atmosphere as a window into other realms of planetary physics, and the atmosphere is a…

Earth and Planetary Astrophysics · Physics 2024-05-09 Jonathan J. Fortney

When extrasolar planets are observed to transit their parent stars, we are granted unprecedented access to their physical properties. It is only for transiting planets that we are permitted direct estimates of the planetary masses and…

Astrophysics · Physics 2007-05-23 David Charbonneau , Timothy M. Brown , Adam Burrows , Greg Laughlin

The cumulative effect of the magnetized stellar winds on exoplanets dominates over other forms of star-planet interactions. When combined with photoevaporation, these winds will lead to atmospheric erosion. This is directly connected with…

Solar and Stellar Astrophysics · Physics 2021-11-19 Judy J. Chebly , Julián D. Alvarado-Gómez , Katja Poppenhaeger

Planets form and obtain their compositions in disks of gas and dust around young stars. The chemical compositions of these planet-forming disks regulate all aspects of planetary compositions from bulk elemental inventories to access to…

Earth and Planetary Astrophysics · Physics 2021-02-24 Karin I. Oberg , Edwin A. Bergin

Star compositions are essential for examining densities and compositional ranges of rocky exoplanets, testing their similarity to Earth. Stellar elemental abundances and planetary orbital data show that of the ~5000 known minerals,…

Earth and Planetary Astrophysics · Physics 2021-08-20 Keith Putirka , Caroline Dorn , Natalie Hinkel , Cayman Unterborn

We present a statistical analysis of the ages and metallicities of triple stellar systems that are known to host exoplanets. With controversial cases disregarded, so far 27 of those systems have been identified. Our analysis, based on an…

Solar and Stellar Astrophysics · Physics 2024-08-26 Manfred Cuntz , Shaan D. Patel

If the photospheres of solar-type stars represent the composition of circumstellar disks from which any planets formed, spectroscopic determinations of stellar elemental abundances offer information on the composition of those planets,…

Earth and Planetary Astrophysics · Physics 2015-06-24 Eric Gaidos

Analysis of the statistical properties of exoplanets, together with those of their host stars, are providing a unique view into the process of planet formation and evolution. In this paper we explore the properties of the mass distribution…

We consider the metallicities and kinematics of nearby stars known to have planetary-mass companions in the general context of the overall properties of the local Galactic Disk. We have used Stromgren photometry to determine abundances for…

Astrophysics · Physics 2009-11-07 I. Neill Reid

The photometric analysis of sample Am stars is carried out to determine the stellar characteristics and to constrain the stellar dynamics. The spectroscopic analysis of the studied Am stars confirms their general characteristics of Am…

Solar and Stellar Astrophysics · Physics 2021-06-05 Gireesh C. Joshi

Studying the internal structure of exoplanets-host stars compared to that of similar stars without detected planets is particularly important for the understanding of planetary formation. The observed overmetallicity of stars with planets…

Solar seismology has allowed precision measurements of both the static and dynamic structure of our local star, the Sun. In the near future, seismology of solar-like stars of different ages and masses, necessarily restricted by angular…

Astrophysics · Physics 2007-05-23 George R. Isaak , Kate G. Isaak

We have been represented the collective information of estimation procedures of parameters of the open clusters and put them together for showing the importance of clusters to understand their role in stellar evolution phenomenon. Moreover,…

Solar and Stellar Astrophysics · Physics 2016-06-24 Gireesh C. Joshi

From an observational standpoint, stellar activity poses a critical challenge to exoplanet science, as it inhibits the detection of planets and the precise measurement of their parameters. Radial velocity and transit searches revealed a…

Earth and Planetary Astrophysics · Physics 2021-04-14 Giovanni Bruno , Magali Deleuil

This Resource Letter gives an introduction to the main topics in exoplanet research. It is intended to serve as a guide to the field for upper-division undergraduate and graduate students, both theoretical and experimental, and for workers…

Earth and Planetary Astrophysics · Physics 2015-06-17 Michael Perryman

The rapid advances in observations of the different populations of exoplanets, the characterization of their host stars and the links to the properties of their planetary systems, the detailed studies of protoplanetary disks, and the…

Earth and Planetary Astrophysics · Physics 2018-12-05 Ralph E. Pudritz , Alex J. Cridland , Matthew Alessi