2013
DOI: 10.1088/0004-637x/763/1/57
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Hierarchical Fragmentation of the Orion Molecular Filaments

Abstract: We present a high angular resolution map of 850 µm continuum emission of the Orion Molecular Cloud-3 (OMC 3) obtained with the Submillimeter Array 1 (SMA); the map is a mosaic of 85 pointings covering an approximate area of 6 ′ .5×2 ′ .0 (0.88×0.27 pc). We detect 12 spatially resolved continuum sources, each with an H 2 mass between 0.3-5.7 M ⊙ and a projected source size between 1400-8200 AU. All the detected sources are on the filamentary main ridge (n H 2 ≥10 6 cm −3 ), and analysis based on the Jeans theor… Show more

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Cited by 75 publications
(124 citation statements)
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“…We report the mean and median nearest neighbour separation, d nn , for all different object classes in Table 3. The mean projected nearest neighbour separations of the dense cores are similar to those seen in the OMC-3 region of the ISF by Takahashi et al (2013). They are a factor of two larger than those measured in the ONC-1n region by Teixeira et al (2016).…”
Section: Nearest Neighbour Separations Of the Dense Cores Protostarssupporting
confidence: 60%
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“…We report the mean and median nearest neighbour separation, d nn , for all different object classes in Table 3. The mean projected nearest neighbour separations of the dense cores are similar to those seen in the OMC-3 region of the ISF by Takahashi et al (2013). They are a factor of two larger than those measured in the ONC-1n region by Teixeira et al (2016).…”
Section: Nearest Neighbour Separations Of the Dense Cores Protostarssupporting
confidence: 60%
“…3), proceeding from north to south. MMS 7 (core #2): The source is single peaked at the resolution of the ALMA map (as already indicated by the 4 ′′ resolution data of Takahashi et al 2013 at 1300 µm). We detect a previously undetected compact source 14 ′′ (5 800 AU) North-East from MMS 7 (core #1).…”
Section: Structure Of the Omc-2/3 At 1 000 Au Resolutionmentioning
confidence: 68%
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“…Thus, the possibility that a few evolved YSOs might have migrated from their birth locations exists; however, in general, protostars are the coldest objects, so are expected to be embedded within the cores. For example, in the OMC-3 region, Takahashi et al (2013) observed eight out of sixteen Spitzer sources are associated with the SMA continuum cores (observed with a spatial resolutions ∼4.5 , comparable to MIPS), which are identified as protostars, and six out of sixteen are categorized as T-Tauri stars having no counterparts in the SMA continuum emission. In the IRDC G192+00.10 region, most of the identified YSOs are protostellar in nature.…”
Section: Spatial Distribution and Separation Of Ysosmentioning
confidence: 99%
“…In young filaments, the distribution of cores is thought to represent a possible preferred length-scale of the filament fragmentation (e.g., Muñoz et al 2007;Jackson et al 2010;Hacar & Tafalla 2011;Miettinen & Offner 2013;Takahashi et al 2013). Since cores are the precursors to protostars, the distribution and separation of young protostars is a good proxy for testing the filament fragmentation theory.…”
Section: Spatial Distribution and Separation Of Ysosmentioning
confidence: 99%