Results 51 to 60 of about 462 (193)

Radiation-Driven Wind Hydrodynamics of Massive Stars: A Review

Galaxies, 2023
Mass loss from massive stars plays a determining role in their evolution through the upper Hertzsprung–Russell diagram. The hydrodynamic theory that describes their steady-state winds is the line-driven wind theory (m-CAK).
Michel Curé, Ignacio Araya
doaj   +1 more source

An Improved Hertzsprung–Russell Diagram for the Orion Trapezium Cluster [PDF]

, 2021
Min Fang, Jinyoung Serena Kim, Ilaria Pascucci, Dániel Apai   +3 more
openalex   +1 more source

A Multidata Approach to Open Clusters: Roslund 3 and Ruprecht 174 in CCD UBV and Gaia DR3 Context

The Astronomical Journal
A detailed analysis of the structural, astrophysical, kinematic, and dynamical properties of the open clusters Roslund 3 and Ruprecht 174 is carried out using CCD UBV photometry in conjunction with astrometric and photometric data from Gaia DR3 ...
Hülya Karagöz, Talar Yontan, Selçuk Bilir, Olcay Plevne, Tansel Ak, Serap Ak, Remziye Canbay, Timothy Banks   +7 more
doaj   +1 more source

The VISCACHA Survey XV: Tracing the 3D Structure and Chemical Evolution of the Outskirts of the Large Magellanic Cloud from Star Clusters

The Astrophysical Journal
The Large Magellanic Cloud (LMC) is the Milky Way’s most massive satellite. Its interactions with the Small Magellanic Cloud are expected to leave imprints on its structure and evolution. In this work, we use the LMC outer star cluster population to seek
Bernardo P. L. Ferreira, João F. C. Santos Jr., Bruno Dias, Francisco F. S. Maia, Saroon Sasi, Pieter Westera, Raphael A. P. Oliveira, Stefano O. Souza, José G. Fernández-Trincado, Leandro Kerber, Bruno Quint, David Sanmartim, Luciano Fraga, Tina Armond, (The VISCACHA Team)   +14 more
doaj   +1 more source

PANCAKE: A Python-based Numerical Color–Magnitude Diagram Analysis Package

The Astrophysical Journal Supplement Series
Stellar populations serve as a fossil record of galaxy formation and evolution, providing crucial information about the history of star formation and galaxy evolution.
Yun Zheng, Yujiao Yang, Yong-Kun Zhang, Zheng Zheng, Jing Wang, Lister Staveley-Smith, Chao-Wei Tsai, Di Li, Chao Liu, Jingjing Hu, Huaxi Chen, Donghui Quan, Yinghui Zheng, Hangyuan Li   +13 more
doaj   +1 more source

The Star Formation History of Nearby Galaxies: A Machine Learning Approach

The Astrophysical Journal
Reproducing color–magnitude diagrams (CMDs) of star-resolved galaxies is one of the most precise methods for measuring the star formation history (SFH) of nearby galaxies back to the earliest time.
Yujiao Yang, Chao Liu, Ming Yang, Yun Zheng, Hao Tian   +4 more
doaj   +1 more source

A comprehensive study of δ Scuti-type pulsators in eclipsing binaries: Oscillating eclipsing Algols

Astronomy & Astrophysics
Eclipsing double-lined spectroscopic binaries (SB2s) hosting δ Scuti-type pulsators offer a unique laboratory for simultaneously constraining stellar geometry and interior structure.
Pawar T., Miszuda A., Hełminiak K. G., Marcadon F., Moharana A., Pawar G., Konacki M.   +6 more
doaj   +1 more source

Massive Stars in the Tarantula Nebula: A Rosetta Stone for Extragalactic Supergiant HII Regions

Galaxies, 2019
A review of the properties of the Tarantula Nebula (30 Doradus) in the Large Magellanic Cloud is presented, primarily from the perspective of its massive star content.
Paul A. Crowther
doaj   +1 more source

The Hertzsprung-Russell diagrams for open clusters [PDF]

Symposium - International Astronomical Union, 1959
The most important relationship between physical characteristics of stars is the spectrum-luminosity correlation. Investigating the character of this correlation for stars of open clusters, Trumpler has worked out a classification of clusters according to their spectral composition.
openaire   +1 more source

Magnetic Ap Stars in the Hertzsprung‐Russell Diagram

The Astrophysical Journal, 2000
The evolutionary state of magnetic Ap stars is rediscussed using the recently released Hipparcos data. The distribution of the magnetic Ap stars of mass below 3 M☉ in the H-R diagram differs from that of the normal stars in the same temperature range at a high level of significance. Magnetic stars are concentrated toward the center of the main-sequence
S. Hubrig, P. North, G. Mathys
openaire   +1 more source