Chemical abundances in tidally disrupted globular clusters

D. Yong; J. Meléndez; K. Cunha; A. I. Karakas; J. E. Norris; V. V. Smith

doi:10.1017/S1743921309991001

Chemical abundances in tidally disrupted globular clusters

D. Yong
, J. Meléndez
, K. Cunha
, A. I. Karakas
, J. E. Norris
, V. V. Smith

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

We present abundance measurements in the tidally disrupted globular cluster NGC 6712. In this cluster, there are large star-to-star variations of the light elements C, N, O, F and Na. While such abundance variations are seen in every well-studied globular cluster, they are not found in field stars and indicate that clusters like NGC 6712 cannot provide many field stars and/or field stars do not form in environments with chemical-enrichment histories like those of NGC 6712. Preliminary analysis of NGC 5466, another tidally disrupted cluster, suggests little (if any) abundance variation for O and Na and the abundance ratios [X/Fe] are comparable to field stars at the same metallicity. Therefore, globular clusters like NGC 5466 may have been Galactic building blocks.

Original language	English (US)
Title of host publication	Star clusters
Subtitle of host publication	basic galactic building blocks throughout time and space
Publisher	Cambridge University Press
Pages	157-160
Number of pages	4
Volume	5
Edition	S266
ISBN (Print)	9780521764995
DOIs	https://doi.org/10.1017/S1743921309991001
State	Published - 2009
Externally published	Yes

Keywords

Galaxy: abundances
Globular clusters: individual (NGC 5466
NGC 6712)
Stars: abundances

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1017/S1743921309991001

Cite this

@inbook{41fe9c16a42442cc90f56d0b356a535b,

title = "Chemical abundances in tidally disrupted globular clusters",

abstract = "We present abundance measurements in the tidally disrupted globular cluster NGC 6712. In this cluster, there are large star-to-star variations of the light elements C, N, O, F and Na. While such abundance variations are seen in every well-studied globular cluster, they are not found in field stars and indicate that clusters like NGC 6712 cannot provide many field stars and/or field stars do not form in environments with chemical-enrichment histories like those of NGC 6712. Preliminary analysis of NGC 5466, another tidally disrupted cluster, suggests little (if any) abundance variation for O and Na and the abundance ratios [X/Fe] are comparable to field stars at the same metallicity. Therefore, globular clusters like NGC 5466 may have been Galactic building blocks.",

keywords = "Galaxy: abundances, Globular clusters: individual (NGC 5466, NGC 6712), Stars: abundances",

author = "D. Yong and J. Mel{\'e}ndez and K. Cunha and Karakas, \{A. I.\} and Norris, \{J. E.\} and Smith, \{V. V.\}",

year = "2009",

doi = "10.1017/S1743921309991001",

language = "English (US)",

isbn = "9780521764995",

volume = "5",

pages = "157--160",

booktitle = "Star clusters",

publisher = "Cambridge University Press",

edition = "S266",

}

TY - CHAP

T1 - Chemical abundances in tidally disrupted globular clusters

AU - Yong, D.

AU - Meléndez, J.

AU - Cunha, K.

AU - Karakas, A. I.

AU - Norris, J. E.

AU - Smith, V. V.

PY - 2009

Y1 - 2009

N2 - We present abundance measurements in the tidally disrupted globular cluster NGC 6712. In this cluster, there are large star-to-star variations of the light elements C, N, O, F and Na. While such abundance variations are seen in every well-studied globular cluster, they are not found in field stars and indicate that clusters like NGC 6712 cannot provide many field stars and/or field stars do not form in environments with chemical-enrichment histories like those of NGC 6712. Preliminary analysis of NGC 5466, another tidally disrupted cluster, suggests little (if any) abundance variation for O and Na and the abundance ratios [X/Fe] are comparable to field stars at the same metallicity. Therefore, globular clusters like NGC 5466 may have been Galactic building blocks.

AB - We present abundance measurements in the tidally disrupted globular cluster NGC 6712. In this cluster, there are large star-to-star variations of the light elements C, N, O, F and Na. While such abundance variations are seen in every well-studied globular cluster, they are not found in field stars and indicate that clusters like NGC 6712 cannot provide many field stars and/or field stars do not form in environments with chemical-enrichment histories like those of NGC 6712. Preliminary analysis of NGC 5466, another tidally disrupted cluster, suggests little (if any) abundance variation for O and Na and the abundance ratios [X/Fe] are comparable to field stars at the same metallicity. Therefore, globular clusters like NGC 5466 may have been Galactic building blocks.

KW - Galaxy: abundances

KW - Globular clusters: individual (NGC 5466

KW - NGC 6712)

KW - Stars: abundances

UR - https://www.scopus.com/pages/publications/84886073564

UR - https://www.scopus.com/pages/publications/84886073564#tab=citedBy

U2 - 10.1017/S1743921309991001

DO - 10.1017/S1743921309991001

M3 - Chapter

AN - SCOPUS:84886073564

SN - 9780521764995

VL - 5

SP - 157

EP - 160

BT - Star clusters

PB - Cambridge University Press

ER -

Chemical abundances in tidally disrupted globular clusters

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this