Effect of nuclear reactions rates and core boundary mixing on the seismology of red clump stars
Context. Modeling of the stars in the red clump (RC), that is, core helium-burning stars that have gone through a He flash, is challenging because of the uncertainties associated with the physical processes in their core and during the helium flash. By probing the internal stellar structure, asteros...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
18 March 2024
|
| In: |
Astronomy and astrophysics
Year: 2024, Jahrgang: 683, Pages: 1-9 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/202348276 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1051/0004-6361/202348276 Verlag, lizenzpflichtig, Volltext: https://www.aanda.org/articles/aa/abs/2024/03/aa48276-23/aa48276-23.html 
|
| Verfasserangaben: | Anthony Noll, Sarbani Basu, and Saskia Hekker |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 189153498X | ||
| 003 | DE-627 | ||
| 005 | 20241205143152.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 240619s2024 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1051/0004-6361/202348276 |2 doi | |
| 035 | |a (DE-627)189153498X | ||
| 035 | |a (DE-599)KXP189153498X | ||
| 035 | |a (OCoLC)1475299809 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Noll, Anthony |e VerfasserIn |0 (DE-588)1333441878 |0 (DE-627)1891535544 |4 aut | |
| 245 | 1 | 0 | |a Effect of nuclear reactions rates and core boundary mixing on the seismology of red clump stars |c Anthony Noll, Sarbani Basu, and Saskia Hekker |
| 264 | 1 | |c 18 March 2024 | |
| 300 | |b Illustrationen | ||
| 300 | |a 9 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 19.06.2024 | ||
| 520 | |a Context. Modeling of the stars in the red clump (RC), that is, core helium-burning stars that have gone through a He flash, is challenging because of the uncertainties associated with the physical processes in their core and during the helium flash. By probing the internal stellar structure, asteroseismology allows us to constrain the core properties of RC stars and eventually, to improve our understanding of this evolutionary phase. Aims. We aim to quantify the impact on the seismic properties of the RC stars of the two main core modeling uncertainties: core boundary mixing, and helium-burning nuclear reaction rates. Methods. Using the MESA stellar evolution code, we computed models with different core boundary mixing as well as different 3α and 12C(α, γ)16O nuclear reaction rates. We investigated the impact of these parameters on the period spacing ΔΠ, which is a probe of the region around the core. Results. We find that different core boundary mixing schemes yield significantly different period spacings, with differences of 30 s between the maximum ΔΠ value computed with semiconvection and maximal overshoot. We show that an increased rate of 12C(α, γ)16O lengthens the core helium-burning phase, which extends the range of ΔΠ covered by the models during their evolution. This results in a difference of 10 s between the models computed with a nominal rate and a rate multiplied by 2, which exceeds the observational uncertainties. The effect of changing the 3α reaction rate is comparatively small. Conclusions. The core boundary mixing is the main source of uncertainty in the seismic modeling of RC stars. Moreover, the effect of the 12C(α, γ)16O is non-negligible, even though it is difficult to distinguish from the effect of the mixing. This degeneracy could be seen more frequently in the future in the new seismic data from the PLATO mission and through theoretical constraints from numerical simulations. | ||
| 700 | 1 | |a Basu, Sarbani |e VerfasserIn |0 (DE-588)1165021005 |0 (DE-627)1029234485 |0 (DE-576)510217087 |4 aut | |
| 700 | 1 | |a Hekker, Saskia |e VerfasserIn |0 (DE-588)1235175464 |0 (DE-627)1760230065 |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Astronomy and astrophysics |d Les Ulis : EDP Sciences, 1969 |g 683(2024) vom: März, Artikel-ID A189, Seite 1-9 |h Online-Ressource |w (DE-627)253390222 |w (DE-600)1458466-9 |w (DE-576)072283351 |x 1432-0746 |7 nnas |a Effect of nuclear reactions rates and core boundary mixing on the seismology of red clump stars |
| 773 | 1 | 8 | |g volume:683 |g year:2024 |g month:03 |g elocationid:A189 |g pages:1-9 |g extent:9 |a Effect of nuclear reactions rates and core boundary mixing on the seismology of red clump stars |
| 856 | 4 | 0 | |u https://doi.org/10.1051/0004-6361/202348276 |x Verlag |x Resolving-System |z lizenzpflichtig |3 Volltext |
| 856 | 4 | 0 | |u https://www.aanda.org/articles/aa/abs/2024/03/aa48276-23/aa48276-23.html |x Verlag |z lizenzpflichtig |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20240619 | ||
| 993 | |a Article | ||
| 994 | |a 2024 | ||
| 998 | |g 1235175464 |a Hekker, Saskia |m 1235175464:Hekker, Saskia |d 130000 |e 130000PH1235175464 |k 0/130000/ |p 3 |y j | ||
| 999 | |a KXP-PPN189153498X |e 4539998897 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"title":[{"title":"Effect of nuclear reactions rates and core boundary mixing on the seismology of red clump stars","title_sort":"Effect of nuclear reactions rates and core boundary mixing on the seismology of red clump stars"}],"person":[{"family":"Noll","given":"Anthony","display":"Noll, Anthony","roleDisplay":"VerfasserIn","role":"aut"},{"display":"Basu, Sarbani","roleDisplay":"VerfasserIn","role":"aut","family":"Basu","given":"Sarbani"},{"family":"Hekker","given":"Saskia","roleDisplay":"VerfasserIn","display":"Hekker, Saskia","role":"aut"}],"type":{"media":"Online-Ressource","bibl":"article-journal"},"note":["Gesehen am 19.06.2024"],"language":["eng"],"recId":"189153498X","origin":[{"dateIssuedDisp":"18 March 2024","dateIssuedKey":"2024"}],"id":{"eki":["189153498X"],"doi":["10.1051/0004-6361/202348276"]},"name":{"displayForm":["Anthony Noll, Sarbani Basu, and Saskia Hekker"]},"physDesc":[{"noteIll":"Illustrationen","extent":"9 S."}],"relHost":[{"physDesc":[{"extent":"Online-Ressource"}],"name":{"displayForm":["European Southern Observatory (ESO)"]},"origin":[{"dateIssuedDisp":"1969-","dateIssuedKey":"1969","publisher":"EDP Sciences ; Springer","publisherPlace":"Les Ulis ; Berlin ; Heidelberg"}],"id":{"issn":["1432-0746"],"zdb":["1458466-9"],"eki":["253390222"]},"type":{"media":"Online-Ressource","bibl":"periodical"},"disp":"Effect of nuclear reactions rates and core boundary mixing on the seismology of red clump starsAstronomy and astrophysics","note":["Gesehen am 21.06.2024","Erscheint 36mal jährlich in 12 Bänden zu je 3 Ausgaben","Fortsetzung der Druck-Ausgabe"],"language":["eng"],"corporate":[{"display":"European Southern Observatory","roleDisplay":"Herausgebendes Organ","role":"isb"}],"recId":"253390222","pubHistory":["1.1969 -"],"titleAlt":[{"title":"Astronomy & astrophysics"},{"title":"a European journal"}],"part":{"year":"2024","pages":"1-9","text":"683(2024) vom: März, Artikel-ID A189, Seite 1-9","volume":"683","extent":"9"},"title":[{"title":"Astronomy and astrophysics","subtitle":"an international weekly journal","title_sort":"Astronomy and astrophysics"}]}]} | ||
| SRT | |a NOLLANTHONEFFECTOFNU1820 | ||