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High-Resolution Observations in B1-IRS: Ammonia, Ccs and Water Masers

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Abstract

We present a study of the structure and dynamics of the star-forming region B1-IRS (IRAS 03301+3057) using the properties of different molecules at high angular resolution (∼4″). We have used VLA observations of NH3, CCS, and H2O masers at 1 cm. CCS emission shows three clumps around the central source, with a velocity gradient from red to blue-shifted velocities towards the protostar, probably due to the interaction with outflowing material. Water maser emission is elongated in the same direction as a reflection nebula detected at 2 μm by 2MASS, with the maser spots located in a structure of some hundreds of AU from the central source, possibly tracing a jet. We propose a new outflow model to explain all our observations, consisting of a molecular outflow near the plane of the sky. Ammonia emission is extended and anticorrelated with CCS. We have detected for the first time this anticorrelation at small scales (1400 AU) in a star-forming region.

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References

  • Furuya, R.S., Kitamura, Y., Wootten, H.A., Claussen, M.J. and Kawabe, R.: 2001, ApJ 559, L143.

    Google Scholar 

  • Hirano, N., Kameya, O., Mikami, H., Saito, S., Umemoto, T. and Yamamoto, S.: 1997, ApJ 478, 631.

    Google Scholar 

  • Kuiper, T.B.H., Langer, W.D. and Velusamy, T.: 1996, ApJ 468, 761.

    Google Scholar 

  • Rodríguez, L.F., Moran, J.M., Gottlieb, E.W. and Ho, P.T.P.: 1980, ApJ 235, 845.

    Google Scholar 

  • Saito, S., Kawaguchi, K., Yamamoto, S., Ohishi, M., Suzuki, H. and Kaifu, N.: 1987, ApJ 317, L115.

    Google Scholar 

  • Suzuki, H., Yamamoto, S., Ohishi, M., Kaifu, N., Ishikawa, S., Hirahara, Y. and Takano, S.: 1992, ApJ 392, 551.

    Google Scholar 

  • Velusamy, T., Kuiper, T.B.H. and Langer, W.D.: 1995, ApJ 451, L75.

    Google Scholar 

  • Yamamoto, S., Mikami, H., Saito, S., Kaifu, N., Ohishi, M. and Kawaguchi, K.: 1992, PASJ 44, 459.

    Google Scholar 

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Authors and Affiliations

  1. Laboratorio de Astrofísica Espacial y Física Fundamental (INTA), Madrid, Spain

    Itziar De Gregorio-Monsalvo & José F. Gómez

  2. National Radio Astronomy Observatory, Socorro, USA

    Itziar De Gregorio-Monsalvo & Claire J. Chandler

  3. Jet Propulsion Laboratory, California Institute of Technology, USA

    Thomas B. H. Kuiper

  4. Instituto de Ciencias del Espacio (CSIC) and Institut d’Estudis Espacials de Catalunya, Barcelona, Spain

    José M. Torrelles

  5. Instituto de Astrofísica de Andalucía (CSIC), Granada, Spain

    Guillem Anglada

Authors
  1. Itziar De Gregorio-Monsalvo
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  2. Claire J. Chandler
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  3. José F. Gómez
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  4. Thomas B. H. Kuiper
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  5. José M. Torrelles
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  6. Guillem Anglada
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Correspondence to Itziar De Gregorio-Monsalvo.

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De Gregorio-Monsalvo, I., Chandler, C.J., Gómez, J.F. et al. High-Resolution Observations in B1-IRS: Ammonia, Ccs and Water Masers. Astrophys Space Sci 295, 65–70 (2005). https://doi.org/10.1007/s10509-005-3661-6

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  • DOI: https://doi.org/10.1007/s10509-005-3661-6

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