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VLBI multi-epoch water maser observations toward massive protostars

Published online by Cambridge University Press:  24 July 2012

José M. Torrelles ,
José F. Gómez ,
Nimesh A. Patel ,
Salvador Curiel ,
Guillem Anglada  and
Robert Estalella
José M. Torrelles
Affiliation:
ICE(CSIC)-UB/IEEC, Barcelona (Spain)
José F. Gómez
Affiliation:
IAA(CSIC), Granada (Spain)
Nimesh A. Patel
Affiliation:
Harvard-Smithsonian, CfA, Cambridge (USA)
Salvador Curiel
Affiliation:
IAUNAM, México D.F. (México)
Guillem Anglada
Affiliation:
IAA(CSIC), Granada (Spain)
Robert Estalella
Affiliation:
UB/IEEC, Barcelona (Spain)
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Abstract

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VLBI multi-epoch water maser observations are a powerful tool to study the gas very close to the central engine responsible for the phenomena associated with the early evolution of massive protostars. In this paper we present a summary of the main observational results obtained toward the massive star-forming regions of Cepheus A and W75N. These observations revealed unexpected phenomena in the earliest stages of evolution of massive objects (e.g., non-collimated “short-lived” pulsed ejections in different massive protostars), and provided new insights in the study of the dynamic scenario of the formation of high-mass stars (e.g., simultaneous presence of a jet and wide-angle outflow in the massive object Cep A HW2, similar to what is observed in low-mass protostars). In addition, with these observations it has been possible to identify new, previously unseen centers of high-mass star formation through outflow activity.

Keywords

ISM: generalstars: formationISM: jets and outflows
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S287: Cosmic Masers - from OH to H0 , January 2012 , pp. 377 - 385
Copyright
Copyright © International Astronomical Union 2012

References

Anglada, G. 1996, ASPC, 93, 3Google Scholar
Carrasco-González, C., Rodríguez, L. F., Anglada, G., Martí, J., Torrelles, J. M., & Osorio, M. 2010a, Science, 330, 1209Google Scholar
Carrasco-González, C. et al. 2011, RMxAC, 40, 229Google Scholar
Carrasco-González, C. et al. 2010b, AJ, 139, 2433Google Scholar
Chibueze, J. M. et al. 2012, ApJ, in pressGoogle Scholar
Curiel, S. et al. 2006, ApJ, 638, 878Google Scholar
Curiel, S. et al. 2002, ApJ, 564, L35CrossRefGoogle Scholar
Davies, B., Lumsden, S. L., Hoare, M. G., Oudmaijer, R. D. & de Wit, W-J. 2010, MNRAS, 402, 1504CrossRefGoogle Scholar
Elitzur, M., Hollenbach, D. J., & McKee, C. F. 1992, ApJ, 394, 221Google Scholar
Fernández-López, M., Girart, J. M., Curiel, S., Gómez, Y., Ho, P. T. P., & Patel, N. 2011, AJ, 142, 97CrossRefGoogle Scholar
Garay, G. & Lizano, S. 1999, PASP, 111, 1049Google Scholar
Garay, G., Ramírez, S., Rodríguez, L. F., Curiel, S., & Torrelles, J. M. 1996, 1996, ApJ, 459, 193CrossRefGoogle Scholar
Goddi, C., Moscadelli, L., & Sanna, A. 2011, A&A, 535, L8Google Scholar
Gómez, J. F. et al. 1999, ApJ, 514, 287Google Scholar
Hughes, V. A. & Wouterloot, J. G. A. 1984, ApJ, 276, 204CrossRefGoogle Scholar
Hunter, T. R., Taylor, G. B., Felli, M., & Tofani, G. 1994, A&A, 284, 215Google Scholar
Jiménez-Serra, I. et al. 2007, ApJ, 661, L187CrossRefGoogle Scholar
Jiménez-Serra, I. et al. 2011, ApJ, 732, L27CrossRefGoogle Scholar
Machida, M. N., Inutsuka, S.-i., & Matsumoto, T. 2008, ApJ, 676, 1088CrossRefGoogle Scholar
Moscadelli, L. et al. 2009, ApJ, 693, 406Google Scholar
Motogi, K. et al. 2008, MNRAS, 390, 523Google Scholar
Patel, N. A., Curiel, S., Sridharan, T. K., Zhang, Q., Hunter, T. R., Ho, P. T. P., Torrelles, J. M., Moran, J. M., Gómez, J. F. G., & Anglada, G. 2005, Nature, 437, 109CrossRefGoogle Scholar
Persi, P., Tapia, M., & Smith, H. A. 2006, A&A, 445, 971Google Scholar
Reid, M. J. & Moran, J. M. 1981, ARAA, 19, 231CrossRefGoogle Scholar
Rodríguez, L. F., Garay, G., Curiel, S., Ramírez, S., Torrelles, J. M., Gómez, Y., & Velázquez, A. 1994, ApJ, 430, L65Google Scholar
Sanna, A., Reid, M. J., Carrasco-González, C., Menten, K. M., Brunthaler, A., Moscadelli, L., & Rygl, K. L. J. 2012, ApJ, 745, 191CrossRefGoogle Scholar
Surcis, G., Vlemmings, W. H. T., Curiel, S., Hutawarakorn Kramer, B., Torrelles, J. M., & Sarma, A. P. 2011, A&A, 527, 48Google Scholar
Torrelles, J. M., Gómez, J. F., Rodríguez, L. F., Ho, P. T. P., Curiel, S., & Vázquez, R. 1997, ApJ, 489, 744Google Scholar
Torrelles, J. M., Patel, N., Anglada, G., Gómez, J. F., Ho, P. T. P., Cantó, J., Curiel, S., Lara, L., Alberdi, A., Garay, G., & Rodríguez, L. F. 2003, ApJ, 598, L115Google Scholar
Torrelles, J. M., Patel, N. A., Curiel, S., Estalella, R., Gómez, J. F., Rodríguez, L. F., Cantó, J., Anglada, G., Vlemmings, W., Garay, G., Raga, A. C., & Ho, P. T. P. 2011, MNRAS, 410, 627Google Scholar
Torrelles, J. M., Patel, N. A., Curiel, S., Ho, P. T. P., Garay, G., & Rodríguez, L. F. 2007, ApJ, 666, L37Google Scholar
Torrelles, J. M., Patel, N., Gómez, J. F., Ho, P. T. P., Rodríguez, L. F., Anglada, G., Garay, G., Greenhill, L., Curiel, S., & Cantó, J. 2001a, Nature, 411, 277Google Scholar
Torrelles, J. M., Patel, N., Gómez, J. F., Ho, P. T. P., Rodríguez, L. F., Anglada, G., Garay, G., Greenhill, L., Curiel, S., & Cantó, J. 2001b, ApJ, 560, 853CrossRefGoogle Scholar
Torrelles, J. M., Patel, N., Curiel, S., Gómez, J. F., Anglada, G., & Estalella, R. 2012, Boletín Asoc. Argentina de Astronomía, Eds. J. J. Clarià, A.E. Piatti, R. Barbá, P. Benaglia and F. Bareilles, No. 54, in pressGoogle Scholar
Trinidad, M. et al. 2003, ApJ, 589, 386Google Scholar
Velusamy, T., Langer, W. D., Kumar, M. S. N., & Grave, J. M. C. 2011, ApJ, 741, 60Google Scholar
Vlemmings, W. H. T. et al. 2010, MNRAS, 404, 134Google Scholar
Zapata, L. A. et al. 2009, ApJ, 698, 1422Google Scholar