2010ApJ...725.2232R


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.13CEST06:14:43

2010ApJ...725.2232R - Astrophys. J., 725, 2232-2250 (2010/December-3)

Deep near-infrared survey of the Pipe nebula. II. Data, methods, and dust extinction maps.

ROMAN-ZUNIGA C.G., ALVES J.F., LADA C.J. and LOMBARDI M.

Abstract (from CDS):

We present a new set of high-resolution dust extinction maps of the nearby and essentially starless Pipe Nebula molecular cloud. The maps were constructed from a concerted deep near-infrared imaging survey with the ESO-VLT, ESO-NTT, CAHA 3.5 m telescopes, and 2MASS data. The new maps have a resolution three times higher than the previous extinction map of this cloud by Lombardi et al. and are able to resolve structures down to 2600 AU. We detect 244 significant extinction peaks across the cloud. These peaks have masses between 0.1 and 18.4 M, diameters between 1.2 and 5.7x104 AU (0.06 and 0.28 pc), and mean densities of about 104/cm3, all in good agreement with previous results. From the analysis of the mean surface density of companions we find a well-defined scale near 1.4x104 AU below which we detect a significant decrease in structure of the cloud. This scale is smaller than the Jeans length calculated from the mean density of the peaks. The surface density of peaks is not uniform but instead it displays clustering. Extinction peaks in the Pipe Nebula appear to have a spatial distribution similar to the stars in Taurus, suggesting that the spatial distribution of stars evolves directly from the primordial spatial distribution of high-density material.

Abstract Copyright:

Journal keyword(s): ISM: clouds - infrared: ISM - stars: formation

VizieR on-line data: <Available at CDS (J/ApJ/725/2232): table2.dat tablea1.dat>

Nomenclature: Table 2: [RLM2009] NNNa N=144 added, [RAL2010] NNNNa N=36 among (Nos N001-N030).

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 12

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Number of rows : 12

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 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1130 0
2 NGC 1499 HII 04 03 18 +36 25.3           ~ 156 0
3 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3679 0
4 NAME Trapezium Cluster As* 05 35 16.5 -05 23 14           ~ 1504 1
5 NAME Coalsack Nebula DNe 12 31 19 -63 44.6           ~ 246 0
6 NAME Coalsack G2 MoC 12 31 29 -63 44.8           ~ 39 0
7 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3156 1
8 LDN 1746 DNe 17 11.3 -27 22           ~ 117 0
9 LDN 57 DNe 17 22 38.2 -23 49 34           ~ 286 1
10 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 351 1
11 DCld 001.6+03.8 DNe 17 35 47.50 -25 32 59.0           ~ 56 0
12 NAME Galactic Bulge reg ~ ~           ~ 3562 0

    Equat.    Gal    SGal    Ecl

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2021.04.13-06:14:43

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