G11.92–0.61-MM2: A BONAFIDE MASSIVE PRESTELLAR CORE?
نویسندگان
چکیده
منابع مشابه
N2H+ and N15NH+ toward the prestellar core 16293E in L1689N
Context. Understanding the processes that could lead to an enrichment of molecules in 15N atoms is of particular interest because this may shed light on the relatively strong variations observed in the 14N/15N ratio in various solar system environments. Aims. The sample of molecular clouds where 14N/15N ratios have been measured currently is small and has to be enlarged to allow statistically s...
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We present a 10-bit 1-MS/s successive approximation analog-to-digital converter core including a charge redistribution digitalto-analog converter and a comparator. A new linearity calibration technique enables use of a nearly minimum capacitor limited by kT/C noise. The ADC core without digital control blocks has been fabricated in a 0.18μm CMOS process and consumes 118 μW at 1.8 V power supply...
متن کاملCollapse, outflows and fragmentation of massive, turbulent and magnetized prestellar barotropic cores
Context. Stars, and more particularly massive stars, have a drastic impact on galaxy evolution. Yet the conditions in which they form and collapse are still not fully understood. Aims: In particular, the influence of the magnetic field on the collapse of massive clumps is relatively unexplored, it is therefore of great relevance in the context of the formation of massive stars to investigate it...
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Turbulence and magnetic fields are expected to be important for regulating molecular cloud formation and evolution. However, their effects on subparsec to 100 parsec scales, leading to the formation of starless cores, is not well understood. We investigate the prestellar core structure morphologies obtained from analysis of the Herschel-SPIRE 350 μm maps of the Lupus I cloud. This distribution ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2014
ISSN: 2041-8213
DOI: 10.1088/2041-8205/796/1/l2