2006ApJ...642..972Y

Query : 2006ApJ...642..972Y

2006ApJ...642..972Y - Astrophys. J., 642, 972-978 (2006/May-2)

Spitzer and Magellan observations of NGC 2264: a remarkable star-forming core near IRS 2.

YOUNG E.T., TEIXEIRA P.S., LADA C.J., MUZEROLLE J., PERSSON S.E., MURPHY D.C., SIEGLER N., MARENGO M., KRAUSE O. and MAINZER A.K.

Abstract (from CDS):

We analyze Spitzer and Magellan observations of a star-forming core near IRS 2 in the young cluster NGC 2264. The submillimeter source IRAS 12 S1, previously believed to be an intermediate-mass Class 0 object is shown to be a dense collection of embedded, low-mass stars. We argue that this group of stars represents the fragmenting collapse of a dense, turbulent core, using a number of indicators of extreme youth. With reasonable estimates for the velocity dispersion in the group, we estimate a dynamical lifetime of only a few times 104 yr. Spectral energy distributions of stars in the core are consistent with Class I or Class 0 assignments. We present observations of an extensive system of molecular hydrogen emission knots. The luminosity of the objects in the core region are consistent with roughly solar mass protostars.

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Journal keyword(s): Galaxy: Open Clusters and Associations: Individual: NGC Number: NGC 2264 - Stars: Formation - Stars: Pre-Main-Sequence

VizieR on-line data: <Available at CDS (J/ApJ/642/972): table1.dat>

Nomenclature: Table 1, Fig.3: [YTL2006] NN (Nos 2-64), [YTL2006] NNNN N=59 among (Nos 1322-1690).

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1227 1
2 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
3 * 15 Mon Be* 06 40 58.65963 +09 53 44.7229 3.360 4.45 4.68   4.88 O7V+B1.5/2V 823 0
4 IRAS 06382+0939 Y*O 06 41 02.81160 +09 36 16.1712         19.89 ~ 93 0
5 [CG88] RNO-West IR 06 41 03.5 +09 36 05           ~ 6 0
6 JCMTSE J064105.8+093407 smm 06 41 05.8 +09 34 09           ~ 18 0
7 NAME Cone Nebula DNe 06 41.1 +09 53           ~ 91 1
8 EM* LkHA 53 TT* 06 41 06.1986599352 +09 36 22.927167036 14.71 14.31 13.43 12.9 12.43 G3V 97 1
9 NAME Mon OB1 D PoC 06 41 09.9 +09 34 34           ~ 64 1
10 NAME Mon OB1 C PoC 06 41 11 +09 29.1           ~ 58 1
11 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1

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