Status: Bibliographieeintrag
Standort: ---
Exemplare:
---
| |  Online-Ressource |
|---|
| Verfasst von: | Savino, Alessandro [VerfasserIn]  |
|---|
| | Tolstoy, Eline [VerfasserIn] |
|---|
| | Salaris, M. [VerfasserIn] |
|---|
| | Monelli, M. [VerfasserIn] |
|---|
| | Boer, T. J. L. de [VerfasserIn] |
|---|
| Titel: | The HST/ACS star formation history of the Tucana dwarf spheroidal galaxy |
|---|
| Titelzusatz: | clues from the horizontal branch |
|---|
| Verf.angabe: | A. Savino, E. Tolstoy, M. Salaris, M. Monelli, and T.J.L. de Boer |
|---|
| E-Jahr: | 2019 |
|---|
| Jahr: | 01 October 2019 |
|---|
| Umfang: | 10 S. |
|---|
| Teil: | volume:630 |
|---|
| | year:2019 |
|---|
| | extent:10 |
|---|
| Fussnoten: | Gesehen am 06.03.2020 |
|---|
| Titel Quelle: | Enthalten in: Astronomy and astrophysics |
|---|
| Ort Quelle: | Les Ulis : EDP Sciences, 1969 |
|---|
| Jahr Quelle: | 2019 |
|---|
| Band/Heft Quelle: | 630(2019) Artikel-Nummer A116, 10 Seiten |
|---|
| ISSN Quelle: | 1432-0746 |
|---|
| Abstract: | We report a new star formation history for the Tucana dwarf spheroidal galaxy, obtained from a new look at a deep HST/ACS colour-magnitude diagram. We combined information from the main sequence turn-off and the horizontal branch to resolve the ancient star formation rates on a finer temporal scale than previously possible. We show that Tucana experienced three major phases of star formation, two very close together at ancient times and the last one ending between 6 and 8 Gyr ago. We show that the three discrete clumps of stars on the horizontal branch are linked to the distinct episodes of star formation in Tucana. The spatial distribution of the clumps reveals that each generation of stars presents a higher concentration than the previous one. The simultaneous modelling of the horizontal branch and the main sequence turn-off also allows us to measure the amount of mass lost by red giant branch stars in Tucana with unprecedented precision, confirming dwarf spheroidals to be excellent laboratories to study the advanced evolution of low-mass stars. |
|---|
| DOI: | doi:10.1051/0004-6361/201936077 |
|---|
| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1051/0004-6361/201936077 |
|---|
| | Volltext: https://www.aanda.org/articles/aa/abs/2019/10/aa36077-19/aa36077-19.html |
|---|
| | DOI: https://doi.org/10.1051/0004-6361/201936077 |
|---|
| Datenträger: | Online-Ressource |
|---|
| Sprache: | eng |
|---|
| K10plus-PPN: | 1691816884 |
|---|
| Verknüpfungen: | → Zeitschrift |
|---|
¬The¬ HST/ACS star formation history of the Tucana dwarf spheroidal galaxy / Savino, Alessandro [VerfasserIn]; 01 October 2019 (Online-Ressource)
68497272
