2012ApJ...746..117L


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.25CET07:19:58

2012ApJ...746..117L - Astrophys. J., 746, 117 (2012/February-3)

G0.253 + 0.016: a molecular cloud progenitor of an Arches-like cluster.

LONGMORE S.N., RATHBORNE J., BASTIAN N., ALVES J., ASCENSO J., BALLY J., TESTI L., LONGMORE A., BATTERSBY C., BRESSERT E., PURCELL C., WALSH A., JACKSON J., FOSTER J., MOLINARI S., MEINGAST S., AMORIM A., LIMA J., MARQUES R., MOITINHO A., PINHAO J., REBORDAO J. and SANTOS F.D.

Abstract (from CDS):

Young massive clusters (YMCs) with stellar masses of 104-105 M and core stellar densities of 104-105 stars per cubic pc are thought to be the "missing link" between open clusters and extreme extragalactic super star clusters and globular clusters. As such, studying the initial conditions of YMCs offers an opportunity to test cluster formation models across the full cluster mass range. G0.253 + 0.016 is an excellent candidate YMC progenitor. We make use of existing multi-wavelength data including recently available far-IR continuum (Herschel/Herschel Infrared Galactic Plane Survey) and mm spectral line (H2 O Southern Galactic Plane Survey and Millimetre Astronomy Legacy Team 90 GHz Survey) data and present new, deep, multiple-filter, near-IR (Very Large Telescope/NACO) observations to study G0.253 + 0.016. These data show that G0.253 + 0.016 is a high-mass (1.3x105 M), low-temperature (Tdust∼ 20 K), high-volume, and column density (n ∼ 8 x104/cm3; NH2∼1023/cm2) molecular clump which is close to virial equilibrium (Mdust∼ Mvirial) so is likely to be gravitationally bound. It is almost devoid of star formation and, thus, has exactly the properties expected for the initial conditions of a clump that may form an Arches-like massive cluster. We compare the properties of G0.253 + 0.016 to typical Galactic cluster-forming molecular clumps and find it is extreme, and possibly unique in the Galaxy. This uniqueness makes detailed studies of G0.253 + 0.016 extremely important for testing massive cluster formation models.

Abstract Copyright:

Journal keyword(s): evolution - Galaxy: center - open clusters and associations: general - stars: formation - stars: massive - stars: protostars

Simbad objects: 20

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Number of rows : 20

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 RSCG 1 CGG 00 18 27 +30 03.3           ~ 3 0
2 [T98b] 70 CGG 00 33 52.9 +07 15 02           ~ 6 0
3 HCG 7 CGG 00 39 15.9 +00 53 17   11.4       ~ 81 0
4 NGC 346 Cl* 00 59 05.090 -72 10 33.24           ~ 451 0
5 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1757 1
6 Cl Westerlund 2 OpC 10 23 58.1 -57 45 49   11.59 10.5     ~ 287 0
7 NGC 3603 OpC 11 15 18.6 -61 15 26           ~ 960 1
8 Cl Westerlund 1 OpC 16 47 04.00 -45 51 04.9           ~ 480 0
9 NAME Sgr C MoC 17 44 36.3 -29 28 13           ~ 314 0
10 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11820 0
11 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 640 0
12 NAME the Brick MoC 17 46 09 -28 43.8           ~ 145 0
13 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 454 0
14 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1954 1
15 SCAMPS G8.68-0.37 smm 18 06 23.24 -21 37 14.1           ~ 11 0
16 SNR G010.6-00.4 SNR 18 10 28 -19 55.8           ~ 56 0
17 W 33a Y*O 18 14 39.0 -17 52 03           ~ 589 0
18 GLIMPSE C01 GlC 18 48 49.7 -01 29 50           ~ 36 0
19 W 49a SFR 19 10 15.7 +09 06 05           ~ 261 2
20 GRS G081.70 +00.50 SFR 20 39 01.6 +42 19 38           O4.5 952 0

    Equat.    Gal    SGal    Ecl

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2020.11.25-07:19:58

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