SIMBAD references

2018ApJ...858...31S - Astrophys. J., 858, 31-31 (2018/May-1)

The VMC survey. XXIX. Turbulence-controlled hierarchical star formation in the Small Magellanic Cloud.

SUN N.-C., DE GRIJS R., CIONI M.-R.L., RUBELE S., SUBRAMANIAN S., VAN LOON J.T., BEKKI K., BELL C.P.M., IVANOV V.D., MARCONI M., MURAVEVA T., OLIVEIRA J.M. and RIPEPI V.

Abstract (from CDS):

In this paper we report a clustering analysis of upper main-sequence stars in the Small Magellanic Cloud, using data from the VMC survey (the VISTA near-infrared YJKs survey of the Magellanic system). Young stellar structures are identified as surface overdensities on a range of significance levels. They are found to be organized in a hierarchical pattern, such that larger structures at lower significance levels contain smaller ones at higher significance levels. They have very irregular morphologies, with a perimeter-area dimension of 1.44 ± 0.02 for their projected boundaries. They have a power-law mass-size relation, power-law size/mass distributions, and a log-normal surface density distribution. We derive a projected fractal dimension of 1.48 ± 0.03 from the mass-size relation, or of 1.4 ± 0.1 from the size distribution, reflecting significant lumpiness of the young stellar structures. These properties are remarkably similar to those of a turbulent interstellar medium, supporting a scenario of hierarchical star formation regulated by supersonic turbulence.

Abstract Copyright: © 2018. The American Astronomical Society.

Journal keyword(s): galaxies: star clusters: general - infrared: stars - Magellanic Clouds - stars: formation

VizieR on-line data: <Available at CDS (J/ApJ/858/31): table1.dat>

Nomenclature: Table 1: [SDC2018] NNN (Nos 1-566).

Simbad objects: 11

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2019.09.20-12:44:18

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