SIMBAD references

2014A&A...561A.148G - Astronomy and Astrophysics, volume 561A, 148-148 (2014/1-1)

The mass distribution of clumps within infrared dark clouds. A large APEX Bolometer Camera study.


Abstract (from CDS):

We present an analysis of the dust continuum emission at 870 µm in order to investigate the mass distribution of clumps within infrared dark clouds (IRDCs). We map six IRDCs with the Large APEX BOlometer CAmera (LABOCA) at APEX, reaching an rms noise level of σrms= 28 -44 mJy/beam. The dust continuum emission coming from these IRDCs was decomposed by using two automated algorithms, Gaussclumps and Clumpfind. Moreover, we carried out single-pointing observations of the N2H+ (3-2) line toward selected positions to obtain kinematic information. The mapped IRDCs are located in the range of kinematic distances of 2.7-3.2 kpc. We identify 510 and 352 sources with Gaussclumps and Clumpfind, respectively, and estimate masses and other physical properties assuming a uniform dust temperature. The mass ranges are 6-2692 M (Gaussclumps) and 7-4254 M (Clumpfind), and the ranges in effective radius are ∼0.10-0.74 pc (Gaussclumps) and 0.16-0.99 pc (Clumpfind). The mass distribution, independent of the decomposition method used, is fitted by a power law, dN/dM ∝Mα, with an index (α) of -1.60 ±0.06, consistent with the CO mass distribution and other high-mass star-forming regions.

Abstract Copyright:

Journal keyword(s): stars: formation - ISM: clouds - dust, extinction - submillimeter: ISM

VizieR on-line data: <Available at CDS (J/A+A/561/A148): table3.dat table4.dat>

Nomenclature: Figs 1-2, Table 1: [GWS2014] GLLL.ll+BB.b N=6. Tables 3-4: [GWS2014] JHHMMSS.s+DDMMSS N=510+352.

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

CDS comments: Paragraph 2.2 source 18592+0109 not identified. Paragraph 4.5 IRAS 17010-4124 not in SIMBAD.

Simbad objects: 33

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