NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-23 T15:01:33 PDT
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For refcode 2015MNRAS.454..839P:
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NED Abstract

Copyright by Royal Astronomical Society. 2015MNRAS.454..839P The VMC survey - XVI. Spatial variation of the cluster formation activity in the innermost regions of the Large Magellanic Cloud Piatti, Andres E.; de Grijs, Richard; Ripepi, Vincenzo; Ivanov, Valentin D.; Cioni, Maria-Rosa L.; Marconi, Marcella; Rubele, Stefano; Bekki, Kenji; For, Bi-Qing Abstract. We present results based on YJK_s_ photometry of star clusters in the Large Magellanic Cloud (LMC), distributed throughout the central part of the galaxy's bar and the 30 Doradus region. We analysed the field-star-decontaminated colour-magnitude diagrams of 313 clusters to estimate their reddening values and ages. The clusters are affected by a mean reddening of E(B - V) is an element of [0.2, 0.3] mag, where the average internal LMC reddening amounts to ~0.1-0.2 mag. The region covering 30 Doradus includes clusters with reddening values in excess of E(B - V) = 0.4 mag. Our cluster sample spans the age range 7.0 <= log (t yr^-1^) < 9.0, represents an increase of 30 per cent in terms of the number of clusters with robust age estimates and comprises a statistically complete sample in the LMC regions of interest here. The resulting cluster frequencies suggest that the outermost regions of the LMC bar first experienced enhanced cluster formation - log (t yr^-1^) is an element of [8.5, 9.0] - before the activity proceeded, although in a patchy manner, to the innermost regions, for log (t yr^-1^) < 7.7. Cluster frequencies in the 30 Doradus region show that the area is dominated by very recent cluster formation. The derived star formation frequencies suggest that the cluster and field-star populations do not seem to have fully evolved as fully coupled systems during the last ~100 Myr. Key words: techniques: photometric, galaxies: individual: LMC, Magellanic Clouds
Retrieve 28 NED objects in this reference.
Please click here for ADS abstract

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