Observing third dredge up in NGC 1846

T. Lebzelter; K. H. Hinkle; M. T. Lederer; S. Cristallo; O. Straniero; W. Nowotny; P. Wood

doi:10.1063/1.2916990

Observing third dredge up in NGC 1846

T. Lebzelter^*, K. H. Hinkle, M. T. Lederer, S. Cristallo, O. Straniero, W. Nowotny, P. Wood

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

In this contribution we present the first measurements of the C/O ratio for a sample of AGB stars in the LMC globular cluster NGC 1846. From a variability study we set strong constraints on the mass of the cluster stars, which is an important quantity for comparison with evolutionary models. Variations of the surface abundance both with luminosity and pulsation properties were found and the various relevant factors are discussed. We find a good agreement with our synthetic models if we assume [O/Fe]=±0.2dex. The F abundance seems to increase with the C/O ratio. As variability plays a key role on the AGB we give some preliminary results from our study of abundance determination in the dynamical case at the end of this paper.

Original language	English
Title of host publication	Ninth Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the Second Perugia Workshop on Nuclear Astrophysics
Pages	56-62
Number of pages	7
DOIs	https://doi.org/10.1063/1.2916990
Publication status	Published - 2008
Event	9th Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the 2nd Perugia Workshop on Nuclear Astrophysics - Perugia, Italy Duration: 21 Oct 2007 → 27 Oct 2007

Publication series

Name	AIP Conference Proceedings
Volume	1001
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	9th Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the 2nd Perugia Workshop on Nuclear Astrophysics
Country/Territory	Italy
City	Perugia
Period	21/10/07 → 27/10/07

Access to Document

10.1063/1.2916990

Cite this

@inproceedings{b39c26fe1d4447f098c8776be4bbf127,

title = "Observing third dredge up in NGC 1846",

abstract = "In this contribution we present the first measurements of the C/O ratio for a sample of AGB stars in the LMC globular cluster NGC 1846. From a variability study we set strong constraints on the mass of the cluster stars, which is an important quantity for comparison with evolutionary models. Variations of the surface abundance both with luminosity and pulsation properties were found and the various relevant factors are discussed. We find a good agreement with our synthetic models if we assume [O/Fe]=±0.2dex. The F abundance seems to increase with the C/O ratio. As variability plays a key role on the AGB we give some preliminary results from our study of abundance determination in the dynamical case at the end of this paper.",

keywords = "Globular Clusters in External Galaxies, Nucleosynthesis, Stellar Evolution",

author = "T. Lebzelter and Hinkle, {K. H.} and Lederer, {M. T.} and S. Cristallo and O. Straniero and W. Nowotny and P. Wood",

year = "2008",

doi = "10.1063/1.2916990",

language = "English",

isbn = "9780735405202",

series = "AIP Conference Proceedings",

pages = "56--62",

booktitle = "Ninth Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the Second Perugia Workshop on Nuclear Astrophysics",

note = "9th Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the 2nd Perugia Workshop on Nuclear Astrophysics ; Conference date: 21-10-2007 Through 27-10-2007",

}

Lebzelter, T, Hinkle, KH, Lederer, MT, Cristallo, S, Straniero, O, Nowotny, W & Wood, P 2008, Observing third dredge up in NGC 1846. in Ninth Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the Second Perugia Workshop on Nuclear Astrophysics. AIP Conference Proceedings, vol. 1001, pp. 56-62, 9th Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the 2nd Perugia Workshop on Nuclear Astrophysics, Perugia, Italy, 21/10/07. https://doi.org/10.1063/1.2916990

Observing third dredge up in NGC 1846. / Lebzelter, T.; Hinkle, K. H.; Lederer, M. T. et al.
Ninth Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the Second Perugia Workshop on Nuclear Astrophysics. 2008. p. 56-62 (AIP Conference Proceedings; Vol. 1001).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Observing third dredge up in NGC 1846

AU - Lebzelter, T.

AU - Hinkle, K. H.

AU - Lederer, M. T.

AU - Cristallo, S.

AU - Straniero, O.

AU - Nowotny, W.

AU - Wood, P.

PY - 2008

Y1 - 2008

N2 - In this contribution we present the first measurements of the C/O ratio for a sample of AGB stars in the LMC globular cluster NGC 1846. From a variability study we set strong constraints on the mass of the cluster stars, which is an important quantity for comparison with evolutionary models. Variations of the surface abundance both with luminosity and pulsation properties were found and the various relevant factors are discussed. We find a good agreement with our synthetic models if we assume [O/Fe]=±0.2dex. The F abundance seems to increase with the C/O ratio. As variability plays a key role on the AGB we give some preliminary results from our study of abundance determination in the dynamical case at the end of this paper.

AB - In this contribution we present the first measurements of the C/O ratio for a sample of AGB stars in the LMC globular cluster NGC 1846. From a variability study we set strong constraints on the mass of the cluster stars, which is an important quantity for comparison with evolutionary models. Variations of the surface abundance both with luminosity and pulsation properties were found and the various relevant factors are discussed. We find a good agreement with our synthetic models if we assume [O/Fe]=±0.2dex. The F abundance seems to increase with the C/O ratio. As variability plays a key role on the AGB we give some preliminary results from our study of abundance determination in the dynamical case at the end of this paper.

KW - Globular Clusters in External Galaxies

KW - Nucleosynthesis

KW - Stellar Evolution

UR - http://www.scopus.com/inward/record.url?scp=84874994924&partnerID=8YFLogxK

U2 - 10.1063/1.2916990

DO - 10.1063/1.2916990

M3 - Conference contribution

SN - 9780735405202

T3 - AIP Conference Proceedings

SP - 56

EP - 62

BT - Ninth Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the Second Perugia Workshop on Nuclear Astrophysics

T2 - 9th Torino Workshop on Evolution and Nucleosynthesis in AGB Stars and the 2nd Perugia Workshop on Nuclear Astrophysics

Y2 - 21 October 2007 through 27 October 2007

ER -

Observing third dredge up in NGC 1846

Abstract

Publication series

Conference

Access to Document

Other files and links

Fingerprint

Cite this