Results 11 to 20 of about 13,326 (291)

A Red Giants’ Toy Story. II. Understanding the Red-giant Branch Bump

The Astrophysical Journal, 2023
The Red-Giant Branch Bump (RGBB) is one of the most noteworthy features in the red-giant luminosity function of stellar clusters. It is caused by the passage of the hydrogen-burning shell through the composition discontinuity left at the point of the ...
Marcelo M. Miller Bertolami
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Calibration of the Tip of the Red Giant Branch [PDF]

The Astrophysical Journal, 2020
Abstract The tip of the red giant branch (TRGB) method provides one of the most accurate and precise means of measuring the distances to nearby galaxies. Here we present a multi-wavelength, VIJHK absolute calibration of the TRGB based on observations of TRGB stars in the Large Magellanic Cloud (LMC), grounded on a geometric distance ...
Wendy L. Freedman, Barry F. Madore, Taylor Hoyt, In Sung Jang, Rachael Beaton, Myung Gyoon Lee, Andrew Monson, Jill Neeley, Jeffrey Rich   +8 more
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The red giant branch in the Tycho-2 catalogue [PDF]

Astronomy Letters, 2011
Based on multicolor photometry from the 2MASS and Tycho-2 catalogues, we have produced a sample of 38 368 branch red giants that has less than 1\% of admixtures and is complete within 500 pc of the Sun. The sample includes 30 671 K giants, 7544 M giants, 49 C giants, and 104 suspected supergiants or S stars.
G. A. Gontcharov
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Modeling APOKASC-3 Red Giants. I. The First Dredge-up and Red Giant Branch Bump

The Astrophysical Journal
We focus on two key diagnostics of stellar physics in red giant branch (RGB) stars: the first dredge-up (FDU) of nuclear processed material and the location of the RGB bump (RGBB).
Kaili Cao, Marc H. Pinsonneault
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Testing Tidal Theory Using Gaia Binaries: The Red Giant Branch

The Astrophysical Journal
Tidal interaction is a major ingredient in the theory of binary evolution. Here, we study tidal circularization in binaries with red giant primaries. We compute the tidal evolution for binaries as their primary stars evolve along the red giant branch ...
Janosz W. Dewberry, Yanqin Wu
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The Aarhus red giants challenge [PDF]

Astronomy & Astrophysics, 2020
Contact. The large quantity of high-quality asteroseismic data that have been obtained from space-based photometric missions and the accuracy of the resulting frequencies motivate a careful consideration of the accuracy of computed oscillation frequencies of stellar models, when applied as diagnostics of the model properties. Aims.
Christensen-Dalsgaard, Jørgen, Christensen-Dalsgaard, Jørgen, Silva Aguirre, Víctor, Silva Aguirre, Víctor, Miller Bertolami, Marcelo M., Miller Bertolami, Marcelo M., Serenelli, A., Serenelli, A., Stello, Dennis, Stello, Dennis, Weiss, A., Weiss, A., Angelou, George, Angelou, George, Jiang, Chen, Jiang, Chen, Lebreton, Yveline, Lebreton, Yveline, Spada, Federico, Spada, Federico, Bellinger, E. P., Bellinger, E. P., Deheuvels, Sébastien, Deheuvels, Sébastien, Ouazzani, R.-M., Ouazzani, R.-M., Pietrinferni, A., Pietrinferni, A., Mosumgaard, Jakob R., Mosumgaard, Jakob R., Townsend, Richard H. D., Townsend, Richard H. D., Battich, Tiara, Bossini, Diego, Constantino, Thomas N., Eggenberger, P., Hekker, Saskia, Mazumdar, A., Miglio, Andrea, Nielsen, K. B., Salaris, M.   +40 more
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Red Giant Branch Stars: The Theoretical Framework [PDF]

Publications of the Astronomical Society of the Pacific, 2002
Theoretical predictions of Red Giant Branch stars' effective temperatures, colors, luminosities and surface chemical abundances are a necessary tool for the astrophysical interpretation of the visible--near infrared integrated light from unresolved stellar populations, the Color-Magnitude-Diagrams of resolved stellar clusters and galaxies, and ...
Salaris, M., Cassisi, S., Weiss, A.
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The Red Giant Branch luminosity function bump [PDF]

Astronomy & Astrophysics, 2003
11 pages, accepted for publication in A& ...
RIELLO M., CASSISI S., PIOTTO, GIAMPAOLO, RECIO BLANCO, ALEJANDRA, DE ANGELI F., SALARIS M., PIETRINFERNI A., BONO G., ZOCCALI M.   +8 more
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Inferring Coupling Strengths of Mixed-mode Oscillations in Red Giant Stars Using Deep Learning

The Astrophysical Journal, 2023
Asteroseismology is a powerful tool that may be applied to shed light on stellar interiors and stellar evolution. Mixed modes, behaving like acoustic waves in the envelope and buoyancy modes in the core, are remarkable because they allow for probing the ...
Siddharth Dhanpal, Othman Benomar, Shravan Hanasoge, Masao Takata, Subrata Kumar Panda, Abhisek Kundu   +5 more
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The Age‐dependent Luminosities of the Red Giant Branch Bump, Asymptotic Giant Branch Bump, and Horizontal Branch Red Clump [PDF]

The Astrophysical Journal, 1999
Color-magnitude diagrams of globular clusters often exhibit a prominent horizontal branch (HB) and may also show features such as the red giant branch (RGB) bump and the asymptotic giant branch (AGB) bump. Stellar evolution theory predicts that the luminosities of these features will depend on the metallicity and age of the cluster.
Alves, David R., Sarajedini, Ata
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