Clusters as probes of distance, evolution, and chemistry of galaxies

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Ardeberg, ArneLund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science (författare)

Clusters as probes of distance, evolution, and chemistry of galaxies

Artikel/kapitelEngelska2003

Förlag, utgivningsår, omfång ...

SPIE,2003

Nummerbeteckningar

LIBRIS-ID:oai:lup.lub.lu.se:cbb68670-6fb8-4f7d-8c10-f8f3d91c2eec
https://lup.lub.lu.se/record/613462URI
https://doi.org/10.1117/12.566108DOI

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Språk:engelska
Sammanfattning på:engelska

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Ämneskategori:kon swepub-publicationtype
Ämneskategori:ref swepub-contenttype

Anmärkningar

Stellar clusters are highly useful as tools for determination of distances, ages and abundances of heavy elements of galaxies, also at larger distances. Their utility for these purposes has, so far, been severely limited, mainly due to image crowding. The introduction of Extremely Large Telescopes (ELTs) with full adaptive optics (AO) and near diffraction limited performance should imply a drastic improvement concerning the usefulness of clusters and the limiting distances of high quality data. We have made a study of stellar clusters as probes of distance, evolution and chemistry of galaxies at distances from one to twenty Mpc. From data on the Stromgren uvby system, partly from direct measurements taken from the literature, we have synthesized test clusters, one open and one globular, as well as galactic backgrounds. The clusters have been embedded in the backgrounds and located at distances between one and twenty Mpc. Here, vby data have been measured, reduced and analyzed. Color-magnitude diagrams (CMDs), metallicity diagrams (MDs) and luminosity functions (LFs) have been constructed. They have been evaluated absolutely and compared to the corresponding template data. We conclude that with a 50 m AO ELT, for open as well as globular clusters, MDs are of high quality for clusters out to and beyond 5 Mpc and useful out to 10 Mpc. CMDs are of very high quality well beyond 5 Mpc. They are of high scientific value out to and beyond 10 Mpc and valuable for clusters even out to 20 Mpc. LFs are highly informative well beyond 10 Mpc and still rather valuable at 20 Mpc. With sufficient measurement data available, LFs are useful for clusters in galaxies even beyond 20 Mpc

Ämnesord och genrebeteckningar

NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
stellar abundances
stellar age
stellar clusters
clusters evolution
galaxy chemistry
clusters metallicity diagram
CMD
cluster luminosity function
AO ELT
clusters of galaxies
1 to 20 Mpc
globular star clusters
galactic backgrounds
colour-magnitude diagram
Extremely Large Telescope
ELT
adaptive optics
open clusters
globular clusters

Biuppslag (personer, institutioner, konferenser, titlar ...)

Linde, PeterLund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science(Swepub:lu)astr-pli (författare)
Ardeberg, Arne (redaktör/utgivare)
Andersen, Torben (redaktör/utgivare)
Astronomi - Genomgår omorganisationInstitutionen för astronomi och teoretisk fysik - Genomgår omorganisation (creator_code:org_t)

Sammanhörande titlar

Ingår i:Proceedings of the SPIE - The International Society for Optical Engineering: SPIE5382:1, s. 47-561996-756X0277-786X

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Proceedings of the SPIE - The International Society for Optical Engineering (Sök värdpublikationen i LIBRIS)

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Av författaren/redakt...: Ardeberg, Arne; Linde, Peter; Andersen, Torben

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NATURVETENSKAP: NATURVETENSKAP; och Fysik; och Astronomi astrof ...

Artiklar i publikationen: Proceedings of t ...

Av lärosätet: Lunds universitet

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