Luminous AGB Stars beyond the Local Group: Tracers of Intermediate-age Populations in the Cen A Group

D Crnojevic; Marina Rejkuba; E. Grebel; Gary Da Costa; Helmut Jerjen

Luminous AGB Stars beyond the Local Group: Tracers of Intermediate-age Populations in the Cen A Group

D Crnojevic, Marina Rejkuba, E. Grebel, Gary Da Costa, Helmut Jerjen

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

Abstract

We investigate the resolved stellar content of three predominantly old and metal-poor early-type dwarf galaxies in the Centaurus A group (at a distance of âˆ¼ 4 Mpc). Our goal is to estimate the fraction of the intermediate-age populations (IAPs) and the period of most recent star formation from their luminous AGB stars. We combine optical HST/ACS and near-infrared VLT/ISAAC images to identify AGB star candidates. The first dataset provides high-resolution photometry while the second one permits us to disentangle the galaxies stellar content from the foreground contamination and to characterize the IAPs. The IAP fraction is found to be very low in the target galaxies (up to âˆ¼ 15%). We compare the results to our own Local Group.

Original language	English
Title of host publication	Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants: Proceedings
Editors	F. Kerschbaum, T. Lebzelter, and R.F. Wing. San Francisco
Place of Publication	San Francisco, United States
Publisher	Astronomical Society of the Pacific
Pages	2pp
Edition	Not Peer Reviewed
ISBN (Print)	9781583817704
Publication status	Published - 2011
Event	Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants - Vienna, Austria, Australia Duration: 1 Jan 2011 → …

Conference

Conference	Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants
Country/Territory	Australia
Period	1/01/11 → …
Other	August 16-20 2010

Cite this

Crnojevic, D., Rejkuba, M., Grebel, E., Da Costa, G., & Jerjen, H. (2011). Luminous AGB Stars beyond the Local Group: Tracers of Intermediate-age Populations in the Cen A Group. In F. K. T. L. A. R. F. W. S. F. (Ed.), Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants: Proceedings (Not Peer Reviewed ed., pp. 2pp). Astronomical Society of the Pacific.

Crnojevic, D ; Rejkuba, Marina ; Grebel, E. et al. / Luminous AGB Stars beyond the Local Group: Tracers of Intermediate-age Populations in the Cen A Group. Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants: Proceedings. editor / F. Kerschbaum, T. Lebzelter, and R.F. Wing. San Francisco. Not Peer Reviewed. ed. San Francisco, United States : Astronomical Society of the Pacific, 2011. pp. 2pp

@inproceedings{bddebc82d0e04168a904c2e2853f49b3,

title = "Luminous AGB Stars beyond the Local Group: Tracers of Intermediate-age Populations in the Cen A Group",

abstract = "We investigate the resolved stellar content of three predominantly old and metal-poor early-type dwarf galaxies in the Centaurus A group (at a distance of {\^a}ˆ¼ 4 Mpc). Our goal is to estimate the fraction of the intermediate-age populations (IAPs) and the period of most recent star formation from their luminous AGB stars. We combine optical HST/ACS and near-infrared VLT/ISAAC images to identify AGB star candidates. The first dataset provides high-resolution photometry while the second one permits us to disentangle the galaxies stellar content from the foreground contamination and to characterize the IAPs. The IAP fraction is found to be very low in the target galaxies (up to {\^a}ˆ¼ 15%). We compare the results to our own Local Group.",

author = "D Crnojevic and Marina Rejkuba and E. Grebel and {Da Costa}, Gary and Helmut Jerjen",

year = "2011",

language = "English",

isbn = "9781583817704",

pages = "2pp",

editor = "{F. Kerschbaum, T. Lebzelter, and R.F. Wing. San Francisco}",

booktitle = "Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants: Proceedings",

publisher = "Astronomical Society of the Pacific",

edition = "Not Peer Reviewed",

note = "Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants ; Conference date: 01-01-2011",

}

Crnojevic, D, Rejkuba, M, Grebel, E, Da Costa, G & Jerjen, H 2011, Luminous AGB Stars beyond the Local Group: Tracers of Intermediate-age Populations in the Cen A Group. in FKTLARFWSF (ed.), Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants: Proceedings. Not Peer Reviewed edn, Astronomical Society of the Pacific, San Francisco, United States, pp. 2pp, Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants, Australia, 1/01/11.

Luminous AGB Stars beyond the Local Group: Tracers of Intermediate-age Populations in the Cen A Group. / Crnojevic, D; Rejkuba, Marina; Grebel, E. et al.
Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants: Proceedings. ed. / F. Kerschbaum, T. Lebzelter, and R.F. Wing. San Francisco. Not Peer Reviewed. ed. San Francisco, United States: Astronomical Society of the Pacific, 2011. p. 2pp.

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

TY - GEN

T1 - Luminous AGB Stars beyond the Local Group: Tracers of Intermediate-age Populations in the Cen A Group

AU - Crnojevic, D

AU - Rejkuba, Marina

AU - Grebel, E.

AU - Da Costa, Gary

AU - Jerjen, Helmut

PY - 2011

Y1 - 2011

N2 - We investigate the resolved stellar content of three predominantly old and metal-poor early-type dwarf galaxies in the Centaurus A group (at a distance of âˆ¼ 4 Mpc). Our goal is to estimate the fraction of the intermediate-age populations (IAPs) and the period of most recent star formation from their luminous AGB stars. We combine optical HST/ACS and near-infrared VLT/ISAAC images to identify AGB star candidates. The first dataset provides high-resolution photometry while the second one permits us to disentangle the galaxies stellar content from the foreground contamination and to characterize the IAPs. The IAP fraction is found to be very low in the target galaxies (up to âˆ¼ 15%). We compare the results to our own Local Group.

AB - We investigate the resolved stellar content of three predominantly old and metal-poor early-type dwarf galaxies in the Centaurus A group (at a distance of âˆ¼ 4 Mpc). Our goal is to estimate the fraction of the intermediate-age populations (IAPs) and the period of most recent star formation from their luminous AGB stars. We combine optical HST/ACS and near-infrared VLT/ISAAC images to identify AGB star candidates. The first dataset provides high-resolution photometry while the second one permits us to disentangle the galaxies stellar content from the foreground contamination and to characterize the IAPs. The IAP fraction is found to be very low in the target galaxies (up to âˆ¼ 15%). We compare the results to our own Local Group.

M3 - Conference contribution

SN - 9781583817704

SP - 2pp

BT - Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants: Proceedings

A2 - null, F. Kerschbaum, T. Lebzelter, and R.F. Wing. San Francisco

PB - Astronomical Society of the Pacific

CY - San Francisco, United States

T2 - Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants

Y2 - 1 January 2011

ER -

Crnojevic D, Rejkuba M, Grebel E, Da Costa G, Jerjen H. Luminous AGB Stars beyond the Local Group: Tracers of Intermediate-age Populations in the Cen A Group. In FKTLARFWSF, editor, Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants: Proceedings. Not Peer Reviewed ed. San Francisco, United States: Astronomical Society of the Pacific. 2011. p. 2pp

Luminous AGB Stars beyond the Local Group: Tracers of Intermediate-age Populations in the Cen A Group

Abstract

Conference

Fingerprint

Cite this