Line profiles of molecular ions toward the pre-stellar core LDN 1544

@inproceedings{Tak2005LinePO,
  title={Line profiles of molecular ions toward the pre-stellar core LDN 1544},
  author={Floris van der Tak and Paola Caselli and Cecilia Ceccarelli},
  year={2005}
}
Velocity profiles of ground state lines of H2D, HC18O+ and N2H, observed previously with the CSO and IRAM 30 m telescopes, are modeled with a Monte Carlo radiative transfer program to study the temperature, density and velocity structure of the pre-stellar core LDN 1544. The H2D line is double-peaked like that of the other ions, but previous models that fit the HC18O+ and N2H profiles are found not to fit the H2D data. Matching the H2D observations requires at least three modifications to the… CONTINUE READING

References

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Dense Interstellar Medium in Galaxies (Springer-Verlag)

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