2017ApJ...842...25G


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.23CEST03:43:02

2017ApJ...842...25G - Astrophys. J., 842, 25-25 (2017/June-2)

Hierarchical star formation in turbulent media: evidence from young star clusters.

GRASHA K., ELMEGREEN B.G., CALZETTI D., ADAMO A., ALOISI A., BRIGHT S.N., COOK D.O., DALE D.A., FUMAGALLI M., GALLAGHER III J.S., GOULIERMIS D.A., GREBEL E.K., KAHRE L., KIM H., KRUMHOLZ M.R., LEE J.C., MESSA M., RYON J.E. and UBEDA L.

Abstract (from CDS):

We present an analysis of the positions and ages of young star clusters in eight local galaxies to investigate the connection between the age difference and separation of cluster pairs. We find that star clusters do not form uniformly but instead are distributed so that the age difference increases with the cluster pair separation to the 0.25-0.6 power, and that the maximum size over which star formation is physically correlated ranges from ∼200 pc to ∼1 kpc. The observed trends between age difference and separation suggest that cluster formation is hierarchical both in space and time: clusters that are close to each other are more similar in age than clusters born further apart. The temporal correlations between stellar aggregates have slopes that are consistent with predictions of turbulence acting as the primary driver of star formation. The velocity associated with the maximum size is proportional to the galaxy's shear, suggesting that the galactic environment influences the maximum size of the star-forming structures.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: star clusters: general - galaxies: star formation - galaxies: stellar content - galaxies: structure - stars: formation - ultraviolet: galaxies - ultraviolet: galaxies

Simbad objects: 9

goto Full paper

goto View the reference in ADS

Number of rows : 9

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 M 74 G 01 36 41.772 +15 47 00.46 10.52 10.00 9.46 9.16   ~ 1341 1
2 NGC 1313 G 03 18 16.046 -66 29 53.74   10.06 10.0 9.40 10.4 ~ 585 2
3 NGC 1566 Sy1 04 20 00.4020009055 -54 56 16.578104141 10.29 10.19 9.73 9.21 10.1 ~ 694 2
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14325 1
5 NGC 3344 EmG 10 43 31.150 +24 55 19.99 10.38 10.54 9.86 9.71   ~ 335 1
6 NGC 3738 AGN 11 35 48.982 +54 31 24.70   12.12 12.04 11.56   ~ 240 0
7 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3683 4
8 NGC 6503 LIN 17 49 26.4206717057 +70 08 39.587370580 11.56 10.95 10.28 9.92   ~ 458 1
9 NGC 7793 GiG 23 57 49.7533807411 -32 35 27.708304655 10.26 9.74 9.28 9.06 9.7 ~ 888 2

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2017ApJ...842...25G and select 'bookmark this link' or equivalent in the popup menu


2019.10.23-03:43:02

© Université de Strasbourg/CNRS

    • Contact