The chemical compositions of red giant stars

1989 ◽  
Author(s):  
Verne V. Smith
Keyword(s):  
Chemical Compositions ◽  
Giant Stars ◽  
Red Giant Stars ◽  
Red Giant

scholarly journals Chemical Compositions of Red Giant Stars from Habitable Zone Planet Finder Spectroscopy

2021 ◽  
Vol 161 (3) ◽  
pp. 128
Author(s):  
Christopher Sneden ◽  
Melike Afşar ◽  
Zeynep Bozkurt ◽  
Gamze Böcek Topcu ◽  
Sergen Özdemir ◽  
...  
Keyword(s):  
Chemical Compositions ◽  
Habitable Zone ◽  
Giant Stars ◽  
Red Giant Stars ◽  
Red Giant

Chemical Compositions of Red Giant Stars in Old Large Magellanic Cloud Globular Clusters

2006 ◽  
Vol 640 (2) ◽  
pp. 801-822 ◽  
Author(s):  
Jennifer A. Johnson ◽  
Inese I. Ivans ◽  
Peter B. Stetson
Keyword(s):  
Globular Clusters ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Chemical Compositions ◽  
Giant Stars ◽  
Red Giant Stars ◽  
Red Giant

Isolating Red Giant Stars in M31's Elusive Outer Spheroid

1998 ◽  
Vol 116 (2) ◽  
pp. 707-722 ◽  
Author(s):  
David B. Reitzel ◽  
Puragra Guhathakurta ◽  
Andrew Gould
Keyword(s):  
Giant Stars ◽  
Red Giant Stars ◽  
Red Giant

Ellipsoidal Variability and Long Secondary Periods in MACHO Red Giant Stars

2006 ◽  
Vol 650 (1) ◽  
pp. L55-L58 ◽  
Author(s):  
A. Derekas ◽  
L. L. Kiss ◽  
T. R. Bedding ◽  
H. Kjeldsen ◽  
P. Lah ◽  
...  
Keyword(s):  
Giant Stars ◽  
Red Giant Stars ◽  
Red Giant

Dust clouds around red giant stars: Evidence of sublimating comet disks?

Icarus ◽  
1989 ◽  
Vol 81 (1) ◽  
pp. 24-30 ◽  
Author(s):  
John J. Matese ◽  
Daniel P. Whitmire ◽  
Ray T. Reynolds
Keyword(s):  
Giant Stars ◽  
Dust Clouds ◽  
Red Giant Stars ◽  
Red Giant

scholarly journals They Might Be Giants: An Efficient Color-based Selection of Red Giant Stars

2018 ◽  
Vol 861 (2) ◽  
pp. L16 ◽  
Author(s):  
Charlie Conroy ◽  
Ana Bonaca ◽  
Rohan P. Naidu ◽  
Daniel J. Eisenstein ◽  
Benjamin D. Johnson ◽  
...  
Keyword(s):  
Giant Stars ◽  
Red Giant Stars ◽  
Red Giant ◽  
Selection Of

scholarly journals Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars

2013 ◽  
Vol 559 ◽  
pp. A102 ◽  
Author(s):  
V. Dobrovolskas ◽  
A. Kučinskas ◽  
M. Steffen ◽  
H.-G. Ludwig ◽  
D. Prakapavičius ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Giant Stars ◽  
Red Giant Stars ◽  
Red Giant

scholarly journals Flare-Like Activity of Red Giant Stars

1983 ◽  
Vol 71 ◽  
pp. 251-254 ◽  
Author(s):  
Robert E. Stencel
Keyword(s):  
Surface Activity ◽  
Magnetic Surface ◽  
Low Gravity ◽  
Giant Stars ◽  
Cool Stars ◽  
Red Giant Stars ◽  
Red Giant

ABSTRACTEvidence for magnetic surface activity among cool stars of low gravity is discussed.

scholarly journals On using dipolar modes to constrain the helium glitch in red giant stars

2020 ◽  
Vol 497 (1) ◽  
pp. 1008-1014
Author(s):  
G Dréau ◽  
M S Cunha ◽  
M Vrard ◽  
P P Avelino
Keyword(s):  
Acoustic Waves ◽  
Acoustic Mode ◽  
Stellar Model ◽  
Red Giants ◽  
Dipole Mode ◽  
Structural Variations ◽  
Giant Stars ◽  
Red Giant Stars ◽  
Red Giant ◽  
Additional Constraints

ABSTRACT The space-borne missions CoRoT and Kepler have revealed numerous mixed modes in red giant stars. These modes carry a wealth of information about red giant cores, but are of limited use when constraining rapid structural variations in their envelopes. This limitation can be circumvented if we have access to the frequencies of the pure acoustic dipolar modes in red giants, i.e. the dipole modes that would exist in the absence of coupling between gravity and acoustic waves. We present a pilot study aimed at evaluating the implications of using these pure acoustic mode frequencies in seismic studies of the helium structural variation in red giants. The study is based on artificial seismic data for a red giant branch stellar model, bracketing seven acoustic dipole radial orders around νmax. The pure acoustic dipole-mode frequencies are derived from a fit to the mixed-mode period spacings and then used to compute the pure acoustic dipole-mode second differences. The pure acoustic dipole-mode second differences inferred through this procedure follow the same oscillatory function as the radial-mode second differences. The additional constraints brought by the dipolar modes allow us to adopt a more complete description of the glitch signature when performing the fit to the second differences. The amplitude of the glitch retrieved from this fit is 15${{\ \rm per\ cent}}$ smaller than that from the fit based on the radial modes alone. Also, we find that thanks to the additional constraints, a bias in the inferred glitch location, found when adopting the simpler description of the glitch, is avoided.

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