BIMA N2H+ 1–0 MAPPING OBSERVATIONS OF L183: FRAGMENTATION AND SPIN-UP IN A COLLAPSING, MAGNETIZED, ROTATING, PRESTELLAR CORE

@article{Kirk2009BIMAN1,
  title={BIMA N2H+ 1–0 MAPPING OBSERVATIONS OF L183: FRAGMENTATION AND SPIN-UP IN A COLLAPSING, MAGNETIZED, ROTATING, PRESTELLAR CORE},
  author={Jason M. Kirk and Richard M. Crutcher and Derek Ward-Thompson},
  journal={The Astrophysical Journal},
  year={2009},
  volume={701},
  pages={1044 - 1052}
}
We have used the Berkeley–Illinois–Maryland Array to make deep N2H+ 1–0 maps of the prestellar core L183, in order to study the spatial and kinematic substructure within the densest part of the core. Three spatially and kinematically distinct clumps are detected, which we label L183-N1, L183-N2, and L183-N3. L183-N2 is approximately coincident with the submillimeter dust peak and lies at the systemic velocity of L183. Thus we conclude that L183-N2 is the central dense core of L183. L183-N1 and… 

Dynamics, CO depletion, and deuterium fractionation of the dense condensations within the fragmented prestellar core Orion B9–SMM 6

We present APEX observations of C17O(2-1), N2H+(3-2), and N2D+(3-2) towards the subfragments inside the prestellar core SMM 6 in Orion B9. We combined these spectral line data with our previous

INITIAL CONDITIONS FOR STAR FORMATION IN CLUSTERS: PHYSICAL AND KINEMATICAL STRUCTURE OF THE STARLESS CORE Oph A-N6

We present high spatial (<300 AU) and spectral (0.07 km s−1) resolution Submillimeter Array observations of the dense starless cluster core Oph A-N6 in the 1 mm dust continuum and the 3–2 line of

An Ammonia Spectral Map of the L1495-B218 Filaments in the Taurus Molecular Cloud. II. CCS and HC7N Chemistry and Three Modes of Star Formation in the Filaments

We present deep CCS and HC7N observations of the L1495-B218 filaments in the Taurus molecular cloud obtained using the K-band focal plane array on the 100 m Green Bank Telescope. We observed the

Molecular complexity in pre-stellar cores: a 3 mm-band study of L183 and L1544

Context. Pre-stellar cores (PSCs) are units of star formation. Besides representing early stages of the dynamical evolution leading to the formation of stars and planets, PSCs also provide a

ICE AND DUST IN THE PRESTELLAR DARK CLOUD LYNDS 183: PREPLANETARY MATTER AT THE LOWEST TEMPERATURES

Dust grains are nucleation centers and catalysts for the growth of icy mantles in quiescent interstellar clouds, the products of which may accumulate into preplanetary matter when new stars and solar

THE OUTER MAGNETIC FIELD OF L183

The L183 (= L134N) dark molecular cloud has been probed using deep near-infrared imaging polarimetry of stars to beyond 14 mag in H band (1.6 μm), using the Mimir instrument on the 1.83 m Perkins

AN ALMA SEARCH FOR SUBSTRUCTURE, FRAGMENTATION, AND HIDDEN PROTOSTARS IN STARLESS CORES IN CHAMAELEON I

We present an Atacama Large Millimeter/submillimeter Array (ALMA) 106 GHz (Band 3) continuum survey of the complete population of dense cores in the Chamaeleon I molecular cloud. We detect a total of

ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Detection of Extremely High-density Compact Structure of Prestellar Cores and Multiple Substructures Within

Prestellar cores are self-gravitating dense and cold structures within molecular clouds where future stars are born. They are expected, at the stage of transitioning to the protostellar phase, to

Three intermediate-mass young stellar objects with different properties emerging from the same natal cloud in IRAS 00117+6412

Aims. Our main aim is to study the influence of the initial conditions of a cloud in the intermediate/high-mass star formation process. Methods. We observed with the VLA, PdBI, and SMA the centimeter

HOW STARLESS ARE STARLESS CORES?

In this paper, we present the results of Combined Array for Research in Millimeter-wave Astronomy continuum and spectral line observations of the dense core Per-Bolo 45. Although this core has

References

SHOWING 1-10 OF 42 REFERENCES

Depletion and low gas temperature in the L183 (= L134N) prestellar core: the N2H + - N2D + tool ⋆

Context. The study of pre-stellar cores (PSCs) suffers from a lack of undepleted species to trace the gas physical properties in their very dense inner parts. Aims. We want to carry out detailed

A Survey for Infall Motions toward Starless Cores. II. CS (2-1) and N 2 H + (1-0) Mapping Observations

We present the results of an extensive mapping survey of "starless" cores in the optically thick line of CS (2-1) and the optically thin lines of N2H+ (1-0) and C18O (1-0). The purpose of this survey

SCUBA Polarization Measurements of the Magnetic Field Strengths in the L183, L1544, and L43 Prestellar Cores

We have mapped linearly polarized dust emission from L183 with the James Clerk Maxwell Telescope SCUBA polarimeter and have analyzed these and our previously published data for the prestellar cores

Probing the Evolutionary Status of Starless Cores through N2H+ and N2D+ Observations

We have undertaken a survey of N2H+ and N2D+ toward 31 low-mass starless cores using the IRAM 30 m telescope. Our main objective has been to determine the abundance ratio of N2D+ and N2H+ toward the

Depletion and low gas temperature in the L 183 prestellar core : the N 2 H +-N 2 D + tool ⋆

Context. The study of pre-stellar cores (PSCs) su ffers from a lack of undepleted species to trace the gas physica l properties in their very dense inner parts. Aims. We want to carry out detailed

The Spitzer c2d Survey of Nearby Dense Cores. II. Discovery of a Low-Luminosity Object in the “Evolved Starless Core” L1521F

We present Spitzer Space Telescope observations of the "evolved starless core" L1521F that reveal the presence of a very low luminosity object (L < 0.07 L☉). The object, L1521F-IRS, is directly

Dynamical and chemical properties of the "starless" core L1014

Spitzer Space Telescope observations of a point-like source, L1014-IRS, close to the dust peak of the low-mass dense core L1014, have raised questions about its starless nature. These show the

The Excitation of N2H+ in Interstellar Molecular Clouds. II. Observations

We present observations of the J = 1-0, 2-1, and 3-2 rotational transitions of N2H+ and N2D+ toward a sample of prototypical dark clouds. The data have been interpreted using nonlocal radiative

Dense Cores in Dark Clouds. XIV. N2H+ (1-0) Maps of Dense Cloud Cores

We present results of an extensive mapping survey of N2H+ (1-0) in about 60 low-mass cloud cores already mapped in the NH3 (1, 1) inversion transition line. The survey has been carried out at the

SCUBA polarization observations of the magnetic fields in the pre-stellar cores L1498 and L1517B

We have mapped linearly polarized dust emission from the prestellar cores L1498 and L1517B with the James Clerk Maxwell Telescope (JCMT) using the Submillimetre Common User Bolometer Array (SCUBA)