2016MNRAS.458.3027M

Query : 2016MNRAS.458.3027M

2016MNRAS.458.3027M - Mon. Not. R. Astron. Soc., 458, 3027-3046 (2016/May-3)

Young and embedded clusters in Cygnus-X: evidence for building up the initial mass function?

MAIA F.F.S., MORAUX E. and JONCOUR I.

Abstract (from CDS):

We provide a new view on the Cygnus-X north complex by accessing for the first time the low mass content of young stellar populations in the region. Canada-France-Hawaii Telescope/Wide-Field Infrared Camera was used to perform a deep near-infrared survey of this complex, sampling stellar masses down to ∼0.1 M☉. Several analysis tools, including a extinction treatment developed in this work, were employed to identify and uniformly characterize a dozen unstudied young star clusters in the area. Investigation of their mass distributions in low-mass domain revealed a relatively uniform log-normal initial mass function (IMF) with a characteristic mass of 0.32±0.08 M☉ and mass dispersion of 0.40±0.06. In the high-mass regime, their derived slopes showed that while the youngest clusters (age

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: low-mass - stars: luminosity function, mass function - stars: pre-main-sequence - open clusters and associations: individual: Cygnus-X - infrared: stars

VizieR on-line data: <Available at CDS (J/MNRAS/458/3027): cluster.dat table.dat>

Simbad objects: 27

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Number of rows : 27
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 Cl Blanco 1 OpC 00 03 24.7 -29 57 29           ~ 325 0
2 NAME Per Arm PoG 03 30 +45.0           ~ 1513 0
3 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3434 0
4 Cl Melotte 25 OpC 04 29 47.3 +16 56 53           ~ 3074 0
5 TYC 3159-6-1 * 20 18 40.3673219184 +41 32 45.106874520   12.51 10.88   8.52 O9.5-O9.7Ib 6 0
6 NAME Northern Coalsack DNe 20 21 +37.0           ~ 117 0
7 NAME Cyg X BL? 20 30 04.7973633 +40 51 36.002197           ~ 843 1
8 W 70 Rad 20 32.6 +43 53           ~ 6 1
9 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 943 0
10 [KC97c] G081.3+01.2 HII 20 35 03.5 +42 27 26           ~ 5 0
11 LS III +42 17 * 20 35 10.6203971568 +42 20 22.806162456   11.7 10.6     B1III 10 0
12 NAME DR 17 IR Cluster OpC 20 35 23.0 +42 22 05           ~ 13 0
13 AX J2035.4+4222 X 20 35 24.3 +42 22 04           ~ 3 0
14 [LK2002] Cl14 OpC 20 35 43 +42 29.4           ~ 8 0
15 [BKH2010] G81.48+0.61 OpC 20 38 06.270 +42 11 48.22           ~ 7 0
16 [KPS2012] MWSC 3383 OpC 20 38 29 +42 29.6           ~ 5 0
17 [BDB2003] G081.44+00.48 OpC 20 38 29.0 +42 06 25           ~ 11 0
18 [BDB2003] G082.00+00.80 OpC 20 38 37.0 +42 39 24           ~ 6 0
19 NAME W 75N IR Cluster Cl* 20 38 37.5 +42 37 57           ~ 8 0
20 [BDB2003] G081.71+00.58 Cl* 20 38 56.8 +42 22 45           ~ 5 0
21 NAME W 75S IR Cluster Cl* 20 38 59.9 +42 19 28           ~ 4 0
22 DR 21 (OH) cor 20 39 01.01 +42 22 50.2           ~ 409 0
23 DR 21 SFR 20 39 01.6 +42 19 38           O4.5 1054 0
24 NAME Cyg X FIR 36 Rad 20 39 01.6 +42 22 47           ~ 118 1
25 [BBD2003] Object 3 Cl* 20 40 00 +42 18.5           ~ 2 0
26 NAME DR 23 IR Cluster OpC 20 41 15.9 +41 51 51           ~ 10 0
27 NAME DR 23 IR Stellar Group OpC 20 41 20.1 +41 58 22           ~ 9 0

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