Results 81 to 90 of about 462 (193)

The γ Dor stars as revealed by Kepler: A key to reveal deep-layer rotation in A and F stars

EPJ Web of Conferences, 2017
The γ Dor pulsating stars present high-order gravity modes, which make them important targets in the intermediate-and low-mass main-sequence region of the Hertzsprung-Russell diagram. Whilst we have only access to rotation in the envelope of the Sun, the
Salmon S. J. A. J., Ouazzani R.-M., Antoci V., Bedding T. R., Murphy S. J.   +4 more
doaj   +1 more source

New Symbiotic Stars from LAMOST DR10 Spectra and Multiband Photometry

The Astrophysical Journal
The Symbiotic star (SySt) is a long-period interacting binary system, typically consisting of a white dwarf (WD) and a red giant surrounded by a nebula. These systems are natural astrophysical laboratories for investigating binary star evolution. In this
Jing Chen, Liang Wang, Yin-Bi Li, Xiao-Xiao Ma, A-Li Luo, Zi-Chong Zhang, Ming-Yi Ding, Kai Zhang   +7 more
doaj   +1 more source

Robust Multiple Regression. [PDF]

Entropy (Basel), 2021
Scott DW, Wang Z.
europepmc   +1 more source

Empirical Mass-Loss Rates across the Upper Hertzsprung-Russell-Diagram [PDF]

, 2009
Claus Leitherer
openalex   +1 more source

Spatially-resolved TRGB JWST Color–Magnitude Diagram as a Tool to Measure Fossil Stellar Metallicity Gradients in Disk Galaxies: NGC 628

The Astrophysical Journal
We use archival JWST/NIRCam images in the F115W, F150W, and F200W filters to measure the tip of the red giant branch (TRGB) magnitudes across the disk of the late-type spiral galaxy NGC 628.
Avinash Ck, Divakara Mayya, Alessandro Bressan, Jairo Andres Alzate Trujillo   +3 more
doaj   +1 more source

The photometric variability of massive stars due to gravity waves excited by core convection. [PDF]

Nat Astron, 2023
Anders EH, Lecoanet D, Cantiello M, Burns KJ, Hyatt BA, Kaufman E, Townsend RHD, Brown BP, Vasil GM, Oishi JS, Jermyn AS.   +10 more
europepmc   +1 more source

The Sonified Hertzsprung-Russell Diagram: Code and Data

, 2022
Daniela Huppenkothen, Juan Pampin, James R. A. Davenport, James Wenlock   +3 more
openalex   +2 more sources

Reflections on the upper Hertzsprung-Russell Diagram

Astrophysics and Space Science
Abstract We review the observational evidence for the empirical upper luminosity limit in the Hertzsprung-Russell Diagram. We discuss its impact on our understanding of the evolution of the most massive stars, the importance of the high mass loss events that shape the upper limit, and the instabilities that may tigger the eruptions in stars ...
Roberta M. Humphreys, Kris Davidson
openaire   +1 more source

47 Tuc in Rubin Data Preview 1. Exploring Early LSST Data and Science Potential

The Astrophysical Journal
We present analyses of the early data from Rubin Observatory’s Data Preview 1 (DP1) for the field of the globular cluster 47 Tuc. The DP1 data set for 47 Tuc includes four nights of observations from the Rubin Commissioning Camera (LSSTComCam), covering ...
Yumi Choi, Knut A. G. Olsen, Jeffrey L. Carlin, Yuankun (David) Wang, Fred Moolekamp, Abhijit Saha, Ian Sullivan, Colin T. Slater, Douglas L. Tucker, Christina L. Adair, Peter S. Ferguson, Yijung Kang, Karla Peña Ramírez, Markus Rabus   +13 more
doaj   +1 more source

Red Supergiants in the Milky Way and Nearby Galaxies

Galaxies
Identifications of red supergiants (RSGs) in the Milky Way and nearby galaxies have experienced an exponential increase in recent years, driven by advancements in selection techniques, the continued expansion of archival datasets, and a steady increase ...
Alceste Z. Bonanos
doaj   +1 more source