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The Tip of the Red Giant Branch
, 2007 I review the latest results on the calibration of the Tip of the Red Giant Branch as a standard candle, in the optical and in the near infrared. The agreement among different and independent empirical calibrations is rather good, if all the uncertainties are taken into account.
M. Bellazzini
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Magnetic Mixing in Red Giant and Asymptotic Giant Branch Stars [PDF]
The Astrophysical Journal, 2008 The available information on isotopic abundances in the atmospheres of low-mass Red Giant Branch (RGB) and Asymptotic Giant Branch (AGB) stars requires that episodes of extensive mixing occur below the convective envelope, reaching down to layers close to the hydrogen burning shell (Cool Bottom Processing).
Jason Nordhaus +4 more
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DUST IS FORMING ALONG THE RED GIANT BRANCH OF 47 Tuc [PDF]
The Astrophysical Journal, 2010 We present additional evidence that dust is really forming along the red giant branch (RGB) of 47 Tuc at luminosities ranging from above the horizontal branch to the RGB-tip (Origlia et al. 2007). The presence of dust had been inferred from an infrared excess in the (K-8) color, with K measured from high spatial resolution ground based near-IR ...
L. Origlia +6 more
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Acoustic oscillations in stars near the tip of the red giant branch [PDF]
Astronomy & Astrophysics, 2010 Small amplitude oscillations are observed in red giant branch (RGB) stars. Data on such oscillations are a source of information about the objects, notably about properties of convection in their envelopes and about the systems these objects inhabit. The OGLE-III catalog contains data for about 80 thousand small amplitude variable red giants (OSARGs ...
W. A. Dziembowski, I. Soszyński
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The Aarhus red giants challenge [PDF]
Astronomy & Astrophysics, 2020 Context.With the advent of space-based asteroseismology, determining accurate properties of red-giant stars using their observed oscillations has become the focus of many investigations due to their implications in a variety of fields in astrophysics.
George C. Angelou +37 more
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Characterisation of red-giant stars in the public Kepler data [PDF]
, 2011 The first public release of long-cadence stellar photometric data collected by the NASA Kepler mission has now been made available. In this paper we characterise the red-giant (G-K) stars in this large sample in terms of their solar-like oscillations. We
Chaplin, W. J. +9 more
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Model Choice Matters for Age Inference on the Red Giant Branch
The Astrophysical JournalGalactic archaeology relies on accurate stellar parameters to reconstruct the Galaxy's history, including information on stellar ages. While the precision of data has improved significantly in recent years, stellar models used for age inference have not ...
Leslie M. Morales +2 more
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Evidence that Mass Loss on the Red Giant Branch Decreases with Metallicity
The Astrophysical JournalMass loss on the red giant branch (RGB) influences stellar evolution, properties of stellar populations, and Galactic chemical enrichment, yet remains poorly constrained observationally. Current models provide limited insight into how stellar properties,
Yaguang Li
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Surface effects on the red giant branch [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 13 pages, 7 figures, accepted in ...
Saskia Hekker +6 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 +5 more
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