dc.contributor.author | Kotulla, R. | |
dc.contributor.author | Fritze, U. | |
dc.contributor.author | Anders, P. | |
dc.date.accessioned | 2009-12-04T10:24:46Z | |
dc.date.available | 2009-12-04T10:24:46Z | |
dc.date.issued | 2009 | |
dc.identifier.citation | Kotulla , R , Fritze , U & Anders , P 2009 , ' Detecting metal-rich intermediate-age globular clusters in NGC4570 using K-band photometry ' , Astrophysics and Space Science , vol. 324 , no. 2-4 , pp. 347-350 . https://doi.org/10.1007/s10509-009-0093-8 | |
dc.identifier.issn | 0004-640X | |
dc.identifier.other | dspace: 2299/4058 | |
dc.identifier.uri | http://hdl.handle.net/2299/4058 | |
dc.description | “The original publication is available at www.springerlink.com”. Copyright Springer. DOI: 10.1007/s10509-009-0093-8 | |
dc.description.abstract | Globular cluster systems (GCSs) of most early-type galaxies feature two peaks in their optical colour distributions. Blue-peak globular clusters (GCs) are believed to be old and metal-poor, whereas the ages, metallicities, and the origin of the red-peak GCs are still being debated. We obtained deep K-band photometry and combined it with Hubble Space Telescope observations in g and z to yield a full spectral energy distribution from the optical to the near-infrared. This now allows us to break the age–metallicity degeneracy. We used our evolutionary synthesis models galev for star clusters to compute a large grid of models with different metallicities and a wide range of ages. Comparing these models to our observations revealed a large population of intermediate-age (1–3 Gyr) and metal-rich (≈solar-metallicity) GCs, that will give us further insights into the formation history of this galaxy. | en |
dc.format.extent | 142201 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astrophysics and Space Science | |
dc.title | Detecting metal-rich intermediate-age globular clusters in NGC4570 using K-band photometry | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1007/s10509-009-0093-8 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |