The Pristine Inner Galaxy Survey (PIGS): IX. the largest detailed chemical analysis of very metal-poor stars in the Sagittarius dwarf galaxy
The most metal-poor stars provide valuable insights into the early chemical enrichment history of a system, carrying the chemical imprints of the first generations of supernovae. The most metal-poor region of the Sagittarius dwarf galaxy remains inadequately observed and characterised. To date, only...
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
September 2024
|
| In: |
Astronomy and astrophysics
Year: 2024, Volume: 689, Pages: 1-14 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/202450553 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1051/0004-6361/202450553 Verlag, kostenfrei, Volltext: https://www.aanda.org/articles/aa/abs/2024/09/aa50553-24/aa50553-24.html 
|
| Author Notes: | Federico Sestito, Sara Vitali, Paula Jofre, Kim A. Venn, David S. Aguado, Claudia Aguilera-Gómez, Anke Ardern-Arentsen, Danielle de Brito Silva, Raymond Carlberg, Camilla J. L. Eldridge, Felipe Gran, Vanessa Hill, Pascale Jablonka, Georges Kordopatis, Nicolas F. Martin, Tadafumi Matsuno, Samuel Rusterucci, Else Starkenburg, and Akshara Viswanathan |
MARC
| LEADER | 00000naa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1927315433 | ||
| 003 | DE-627 | ||
| 005 | 20250603104402.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 250603s2024 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1051/0004-6361/202450553 |2 doi | |
| 035 | |a (DE-627)1927315433 | ||
| 035 | |a (DE-599)KXP1927315433 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Sestito, Federico |e VerfasserIn |0 (DE-588)1367607906 |0 (DE-627)1927316324 |4 aut | |
| 245 | 1 | 4 | |a The Pristine Inner Galaxy Survey (PIGS) |b IX. the largest detailed chemical analysis of very metal-poor stars in the Sagittarius dwarf galaxy |c Federico Sestito, Sara Vitali, Paula Jofre, Kim A. Venn, David S. Aguado, Claudia Aguilera-Gómez, Anke Ardern-Arentsen, Danielle de Brito Silva, Raymond Carlberg, Camilla J. L. Eldridge, Felipe Gran, Vanessa Hill, Pascale Jablonka, Georges Kordopatis, Nicolas F. Martin, Tadafumi Matsuno, Samuel Rusterucci, Else Starkenburg, and Akshara Viswanathan |
| 264 | 1 | |c September 2024 | |
| 300 | |b Illustrationen | ||
| 300 | |a 14 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Online verfügbar: 13. September 2024 | ||
| 500 | |a Gesehen am 03.06.2025 | ||
| 520 | |a The most metal-poor stars provide valuable insights into the early chemical enrichment history of a system, carrying the chemical imprints of the first generations of supernovae. The most metal-poor region of the Sagittarius dwarf galaxy remains inadequately observed and characterised. To date, only ∼4 stars with [Fe/H] < −2.0 have been chemically analysed with high-resolution spectroscopy. In this study, we present the most extensive chemical abundance analysis of 12 low-metallicity stars with metallicities down to [Fe/H] = −3.26 and located in the main body of Sagittarius. These targets, selected from the Pristine Inner Galaxy Survey, were observed using the MIKE high-resolution spectrograph at the Magellan-Clay telescope, which allowed us to measure up to 17 chemical species. The chemical composition of these stars reflects the imprint of a variety of type II supernovae (SNe II). A combination of low- to intermediate-mass high-energy SNe and hypernovae (∼10 − 70 M⊙) is required to account for the abundance patterns of the lighter elements up to the Fe-peak. The trend of the heavy elements suggests the involvement of compact binary merger events and fast-rotating (up to ∼300 km s−1) intermediate-mass to massive metal-poor stars (∼25 − 120 M⊙) that are the sources of rapid and slow processes, respectively. Additionally, asymptotic giant branch stars contribute to a wide dispersion of [Ba/Mg] and [Ba/Eu]. The absence of an α−knee in our data indicates that type Ia supernovae did not contribute in the very metal-poor region ([Fe/H] ≤ −2.0). However, they might have started to pollute the interstellar medium at [Fe/H] > −2.0, given the relatively low [Co/Fe] in this metallicity region. | ||
| 700 | 1 | |a Vitali, Sara |e VerfasserIn |4 aut | |
| 700 | 1 | |a Jofre, Paula |e VerfasserIn |4 aut | |
| 700 | 1 | |a Venn, Kim A. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Aguado, David S. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Aguilera-Gómez, Claudia |e VerfasserIn |4 aut | |
| 700 | 1 | |a Ardern-Arentsen, Anke |e VerfasserIn |4 aut | |
| 700 | 1 | |a Silva, Danielle de Brito |e VerfasserIn |4 aut | |
| 700 | 1 | |a Carlberg, Raymond |e VerfasserIn |4 aut | |
| 700 | 1 | |a Eldridge, Camilla J. L. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Gran, Felipe |e VerfasserIn |4 aut | |
| 700 | 1 | |a Hill, Vanessa |e VerfasserIn |4 aut | |
| 700 | 1 | |a Jablonka, Pascale |e VerfasserIn |4 aut | |
| 700 | 1 | |a Kordopatis, Georges |e VerfasserIn |4 aut | |
| 700 | 1 | |a Martin, Nicolas F. |e VerfasserIn |4 aut | |
| 700 | 1 | |a Matsuno, Tadafumi |e VerfasserIn |0 (DE-588)1343346533 |0 (DE-627)1903587220 |4 aut | |
| 700 | 1 | |a Rusterucci, Samuel |e VerfasserIn |4 aut | |
| 700 | 1 | |a Starkenburg, Else |e VerfasserIn |4 aut | |
| 700 | 1 | |a Viswanathan, Akshara |e VerfasserIn |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Astronomy and astrophysics |d Les Ulis : EDP Sciences, 1969 |g 689(2024) vom: Sept., Artikel-ID A201, Seite 1-14 |h Online-Ressource |w (DE-627)253390222 |w (DE-600)1458466-9 |w (DE-576)072283351 |x 1432-0746 |7 nnas |a The Pristine Inner Galaxy Survey (PIGS) IX. the largest detailed chemical analysis of very metal-poor stars in the Sagittarius dwarf galaxy |
| 773 | 1 | 8 | |g volume:689 |g year:2024 |g month:09 |g elocationid:A201 |g pages:1-14 |g extent:14 |a The Pristine Inner Galaxy Survey (PIGS) IX. the largest detailed chemical analysis of very metal-poor stars in the Sagittarius dwarf galaxy |
| 856 | 4 | 0 | |u https://doi.org/10.1051/0004-6361/202450553 |x Verlag |x Resolving-System |z kostenfrei |3 Volltext |
| 856 | 4 | 0 | |u https://www.aanda.org/articles/aa/abs/2024/09/aa50553-24/aa50553-24.html |x Verlag |z kostenfrei |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20250603 | ||
| 993 | |a Article | ||
| 994 | |a 2024 | ||
| 998 | |g 1343346533 |a Matsuno, Tadafumi |m 1343346533:Matsuno, Tadafumi |d 700000 |d 714000 |d 714100 |e 700000PM1343346533 |e 714000PM1343346533 |e 714100PM1343346533 |k 0/700000/ |k 1/700000/714000/ |k 2/700000/714000/714100/ |p 16 | ||
| 999 | |a KXP-PPN1927315433 |e 4730193695 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"note":["Online verfügbar: 13. September 2024","Gesehen am 03.06.2025"],"person":[{"given":"Federico","display":"Sestito, Federico","role":"aut","family":"Sestito"},{"family":"Vitali","role":"aut","display":"Vitali, Sara","given":"Sara"},{"given":"Paula","display":"Jofre, Paula","family":"Jofre","role":"aut"},{"family":"Venn","role":"aut","given":"Kim A.","display":"Venn, Kim A."},{"given":"David S.","display":"Aguado, David S.","role":"aut","family":"Aguado"},{"role":"aut","family":"Aguilera-Gómez","display":"Aguilera-Gómez, Claudia","given":"Claudia"},{"role":"aut","family":"Ardern-Arentsen","given":"Anke","display":"Ardern-Arentsen, Anke"},{"display":"Silva, Danielle de Brito","given":"Danielle de Brito","role":"aut","family":"Silva"},{"role":"aut","family":"Carlberg","given":"Raymond","display":"Carlberg, Raymond"},{"role":"aut","family":"Eldridge","display":"Eldridge, Camilla J. L.","given":"Camilla J. L."},{"family":"Gran","role":"aut","display":"Gran, Felipe","given":"Felipe"},{"given":"Vanessa","display":"Hill, Vanessa","family":"Hill","role":"aut"},{"display":"Jablonka, Pascale","given":"Pascale","family":"Jablonka","role":"aut"},{"family":"Kordopatis","role":"aut","given":"Georges","display":"Kordopatis, Georges"},{"role":"aut","family":"Martin","given":"Nicolas F.","display":"Martin, Nicolas F."},{"display":"Matsuno, Tadafumi","given":"Tadafumi","role":"aut","family":"Matsuno"},{"family":"Rusterucci","role":"aut","given":"Samuel","display":"Rusterucci, Samuel"},{"given":"Else","display":"Starkenburg, Else","role":"aut","family":"Starkenburg"},{"given":"Akshara","display":"Viswanathan, Akshara","role":"aut","family":"Viswanathan"}],"recId":"1927315433","name":{"displayForm":["Federico Sestito, Sara Vitali, Paula Jofre, Kim A. Venn, David S. Aguado, Claudia Aguilera-Gómez, Anke Ardern-Arentsen, Danielle de Brito Silva, Raymond Carlberg, Camilla J. L. Eldridge, Felipe Gran, Vanessa Hill, Pascale Jablonka, Georges Kordopatis, Nicolas F. Martin, Tadafumi Matsuno, Samuel Rusterucci, Else Starkenburg, and Akshara Viswanathan"]},"language":["eng"],"origin":[{"dateIssuedKey":"2024","dateIssuedDisp":"September 2024"}],"relHost":[{"titleAlt":[{"title":"Astronomy & astrophysics"},{"title":"a European journal"}],"disp":"The Pristine Inner Galaxy Survey (PIGS) IX. the largest detailed chemical analysis of very metal-poor stars in the Sagittarius dwarf galaxyAstronomy and astrophysics","type":{"media":"Online-Ressource","bibl":"periodical"},"corporate":[{"role":"isb","display":"European Southern Observatory"}],"pubHistory":["1.1969 -"],"note":["Gesehen am 21.06.2024","Erscheint 36mal jährlich in 12 Bänden zu je 3 Ausgaben","Fortsetzung der Druck-Ausgabe"],"language":["eng"],"part":{"year":"2024","volume":"689","text":"689(2024) vom: Sept., Artikel-ID A201, Seite 1-14","extent":"14","pages":"1-14"},"origin":[{"dateIssuedDisp":"1969-","publisher":"EDP Sciences ; Springer","publisherPlace":"Les Ulis ; Berlin ; Heidelberg","dateIssuedKey":"1969"}],"title":[{"title":"Astronomy and astrophysics","subtitle":"an international weekly journal","title_sort":"Astronomy and astrophysics"}],"id":{"eki":["253390222"],"issn":["1432-0746"],"zdb":["1458466-9"]},"physDesc":[{"extent":"Online-Ressource"}],"recId":"253390222","name":{"displayForm":["European Southern Observatory (ESO)"]}}],"physDesc":[{"extent":"14 S.","noteIll":"Illustrationen"}],"id":{"eki":["1927315433"],"doi":["10.1051/0004-6361/202450553"]},"title":[{"title":"The Pristine Inner Galaxy Survey (PIGS)","subtitle":"IX. the largest detailed chemical analysis of very metal-poor stars in the Sagittarius dwarf galaxy","title_sort":"Pristine Inner Galaxy Survey (PIGS)"}],"type":{"media":"Online-Ressource","bibl":"article-journal"}} | ||
| SRT | |a SESTITOFEDPRISTINEIN2024 | ||