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Observational Studies of Pre-Stellar Cores and Infrared Dark Clouds

Published online by Cambridge University Press:  21 December 2011

Paola Caselli
Paola Caselli*
Affiliation:
School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK email: [email protected]
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Abstract

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Stars like our Sun and planets like our Earth form in dense regions within interstellar molecular clouds, called pre-stellar cores (PSCs). PSCs provide the initial conditions in the process of star and planet formation. In the past 15 years, detailed observations of (low-mass) PSCs in nearby molecular cloud complexes have allowed us to find that they are cold (T < 10K) and quiescent (molecular line widths are close to thermal), with a chemistry profoundly affected by molecular freeze-out onto dust grains. In these conditions, deuterated molecules flourish, becoming the best tools to unveil the PSC physical and chemical structure. Despite their apparent simplicity, PSCs still offer puzzles to solve and they are far from being completely understood. For example, what is happening to the gas and dust in their nuclei (the future stellar cradles) is still a mystery that awaits for ALMA. Other important questions are: how do different environments and external conditions affect the PSC physical/chemical structure? Are PSCs in high-mass star forming regions similar to the well-known low-mass PSCs? Here I review observational and theoretical work on PSCs in nearby molecular cloud complexes and the ongoing search and study of massive PSCs embedded in infrared dark clouds (IRDCs), which host the initial conditions for stellar cluster and high-mass star formation.

Keywords

astrochemistryline: profilesmolecular datamolecular processesradiative transferstars: formationISM: cloudsdustextinctionkinematics and dynamicsmolecules
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S280: The Molecular Universe , June 2011 , pp. 19 - 32
Copyright
Copyright © International Astronomical Union 2011

References

Aikawa, Y., Herbst, E., Roberts, H., & Caselli, P. 2005, ApJ, 620, 330CrossRefGoogle Scholar
Aikawa, Y., Wakelam, V., Garrod, R. T., & Herbst, E. 2008, ApJ, 674, 984CrossRefGoogle Scholar
Alves, J. F., Lada, C. J., & Lada, E. A. 2001, Nature, 409, 159CrossRefGoogle Scholar
Alves, J., Lombardi, M., & Lada, C. J. 2007, A&A, 462, L17Google Scholar
André, P., et al. , 2010, A&A, 518, L102Google Scholar
Arce, H. G., Borkin, M. A., Goodman, A. A., Pineda, J. E., & Halle, M. W. 2010, ApJ, 715, 1170CrossRefGoogle Scholar
Arce, H. G., Shepherd, D., Gueth, F., Lee, C.-F., Bachiller, R., Rosen, A., & Beuther, H. 2007, Protostars and Planets V, 245Google Scholar
Bacmann, A., Lefloch, B., Ceccarelli, C., Castets, A., Steinacker, J., & Loinard, L. 2002, A&A, 389, L6Google Scholar
Bacmann, A., Lefloch, B., Ceccarelli, C., Steinacker, J., Castets, A., & Loinard, L. 2003, ApJ, 585, L55CrossRefGoogle Scholar
Beichman, C. A., Myers, P. C., Emerson, J. P., Harris, S., Mathieu, R., Benson, P. J., & Jennings, R. E. 1986, ApJ, 307, 337CrossRefGoogle Scholar
Belloche, A., André, P., Despois, D., & Blinder, S. 2002, A&A, 393, 927Google Scholar
Benson, P. J. & Myers, P. C. 1989, ApJS, 71, 89CrossRefGoogle Scholar
Bergin, E. A., Alves, J., Huard, T., & Lada, C. J. 2002, ApJ, 570, L101CrossRefGoogle Scholar
Bergin, E. A. & Snell, R. L. 2002, ApJ, 581, L105CrossRefGoogle Scholar
Bergin, E. A. & Tafalla, M. 2007, ARAA, 45, 339CrossRefGoogle Scholar
Beuther, H., Churchwell, E. B., McKee, C. F., & Tan, J. C. 2007, Protostars and Planets V, 165Google Scholar
Bisschop, S. E., Fraser, H. J., Öberg, K. I., van Dishoeck, E. F., & Schlemmer, S. 2006, A&A, 449, 1297Google Scholar
Bringa, E. M. & Johnson, R. E. 2004, ApJ, 603, 159CrossRefGoogle Scholar
Broderick, A. E., Narayan, R., Keto, E., & Lada, C. J. 2008, ApJ, 682, 1095CrossRefGoogle Scholar
Butler, M. J. & Tan, J. C. 2009, ApJ, 696, 484CrossRefGoogle Scholar
Caselli, P., Benson, P. J., Myers, P. C., & Tafalla, M. 2002a, ApJ, 572, 238CrossRefGoogle Scholar
Caselli, P., et al. , 2010, A&A, 521, L29Google Scholar
Caselli, P., Myers, P. C., & Thaddeus, P. 1995, ApJ, 455, L77CrossRefGoogle Scholar
Caselli, P., van der Tak, F. F. S., Ceccarelli, C., & Bacmann, A. 2003, A&A, 403, L37Google Scholar
Caselli, P., Vastel, C., Ceccarelli, C., van der Tak, F. F. S., Crapsi, A., & Bacmann, A. 2008, A&A, 492, 703Google Scholar
Caselli, P., Walmsley, C. M., Tafalla, M., Dore, L., & Myers, P. C. 1999, ApJ, 523, L165CrossRefGoogle Scholar
Caselli, P., Walmsley, C. M., Zucconi, A., Tafalla, M., Dore, L., & Myers, P. C. 2002b, ApJ, 565, 331CrossRefGoogle Scholar
Caselli, P., Walmsley, C. M., Zucconi, A., Tafalla, M., Dore, L., & Myers, P. C. 2002c, ApJ, 565, 344CrossRefGoogle Scholar
Caux, E., et al. , 1999, A&A, 347, L1Google Scholar
Ceccarelli, C., Caselli, P., Herbst, E., Tielens, A. G. G. M., & Caux, E. 2007, Protostars and Planets V, 47Google Scholar
Chen, H.-R., Liu, S.-Y., Su, Y.-N., & Zhang, Q. 2010, ApJ, 713, L50CrossRefGoogle Scholar
Chiar, J. E., et al. , 2011, ApJ, 731, 9CrossRefGoogle Scholar
Crapsi, A., Caselli, P., Walmsley, C. M., Myers, P. C., Tafalla, M., Lee, C. W., & Bourke, T. L. 2005, ApJ, 619, 379CrossRefGoogle Scholar
Crapsi, A., Caselli, P., Walmsley, M. C., & Tafalla, M. 2007, A&A, 470, 221Google Scholar
Dalgarno, A. 2006, Proceedings of the National Academy of Science, 103, 12269CrossRefGoogle Scholar
Dalgarno, A. & Lepp, S. 1984, ApJ, 287, L47CrossRefGoogle Scholar
Devine, K. E., Chandler, C. J., Brogan, C., Churchwell, E., Indebetouw, R., Shirley, Y., & Borg, K. J. 2011, ApJ, 733, 44Google Scholar
Di Francesco, J., Evans, N. J. II, Caselli, P., Myers, P. C., Shirley, Y., Aikawa, Y., & Tafalla, M. 2007, Protostars and Planets V, 17Google Scholar
Deharveng, L., Zavagno, A., & Caplan, J. 2005, A&A, 433, 565Google Scholar
Egan, M. P., Shipman, R. F., Price, S. D., Carey, S. J., Clark, F. O., & Cohen, M. 1998, ApJ, 494, L199CrossRefGoogle Scholar
Emprechtinger, M., Caselli, P., Volgenau, N. H., Stutzki, J., & Wiedner, M. C. 2009, A&A, 493, 89Google Scholar
Evans, N. J. II, Rawlings, J. M. C., Shirley, Y. L., & Mundy, L. G. 2001, ApJ, 557, 193CrossRefGoogle Scholar
Flower, D. R., Pineau des Forêts, G., & Walmsley, C. M. 2004, A&A, 427, 887Google Scholar
Flower, D. R., Pineau Des Forêts, G., & Walmsley, C. M. 2005, A&A, 436, 933Google Scholar
Flower, D. R., Pineau Des Forêts, G., & Walmsley, C. M. 2006, A&A, 456, 215Google Scholar
Fontani, F., et al. , 2011, A&A, 529, L7Google Scholar
Foster, J. B., Rosolowsky, E. W., Kauffmann, J., Pineda, J. E., Borkin, M. A., Caselli, P., Myers, P. C., & Goodman, A. A. 2009, ApJ, 696, 298CrossRefGoogle Scholar
Friesen, R. K., Di Francesco, J., Myers, P. C., Belloche, A., Shirley, Y. L., Bourke, T. L., & André, P. 2010a, ApJ, 718, 666CrossRefGoogle Scholar
Friesen, R. K., Di Francesco, J., Shimajiri, Y., & Takakuwa, S. 2010b, ApJ, 708, 1002CrossRefGoogle Scholar
Frerking, M. A., Langer, W. D., & Wilson, R. W. 1987, ApJ, 313, 320CrossRefGoogle Scholar
Galli, D., Walmsley, M., & Gonçalves, J. 2002, A&A, 394, 275Google Scholar
Goldsmith, P. F. 2001, ApJ, 557, 736CrossRefGoogle Scholar
Goodman, A. A., Benson, P. J., Fuller, G. A., & Myers, P. C. 1993, ApJ, 406, 528CrossRefGoogle Scholar
Hasegawa, T. I. & Herbst, E. 1993, MNRAS, 261, 83CrossRefGoogle Scholar
Heitsch, F., Ballesteros-Paredes, J., & Hartmann, L. 2009, ApJ, 704, 1735CrossRefGoogle Scholar
Heitsch, F., Naab, T., & Walch, S. 2011, MNRAS, 415, 271CrossRefGoogle Scholar
Henning, T., Linz, H., Krause, O., Ragan, S., Beuther, H., Launhardt, R., Nielbock, M., & Vasyunina, T. 2010, A&A, 518, L95Google Scholar
Herbst, E. & Cuppen, H. M. 2006, Proceedings of the National Academy of Science, 103, 12257CrossRefGoogle Scholar
Herbst, E. & van Dishoeck, E. F. 2009, ARAA, 47, 427CrossRefGoogle Scholar
Hernandez, A. K. & Tan, J. C. 2011, ApJ, 730, 44CrossRefGoogle Scholar
Hernandez, A. K., Tan, J. C., Caselli, P., Butler, M. J., Jimenez-Serra, I., Fontani, F., & Barnes, P. 2011, ApJ, in press (arXiv:1106.2499)Google Scholar
Hily-Blant, P., Walmsley, M., Pineau Des Forêts, G., & Flower, D. 2010, A&A, 513, A41Google Scholar
Hollenbach, D., Kaufman, M. J., Bergin, E. A., & Melnick, G. J. 2009, ApJ, 690, 1497CrossRefGoogle Scholar
Jiménez-Serra, I., Caselli, P., Tan, J. C., Hernandez, A. K., Fontani, F., Butler, M. J., & van Loo, S. 2010, MNRAS, 406, 187CrossRefGoogle Scholar
Kaufman, M. J., Wolfire, M. G., Hollenbach, D. J., & Luhman, M. L. 1999, ApJ, 527, 795CrossRefGoogle Scholar
Keto, E. & Caselli, P. 2008, ApJ, 683, 238CrossRefGoogle Scholar
Keto, E. & Caselli, P. 2010, MNRAS, 402, 1625CrossRefGoogle Scholar
Keto, E. & Field, G. 2005, ApJ, 635, 1151CrossRefGoogle Scholar
Klotz, A., Harju, J., Ristorcelli, I., Juvela, M., Boudet, N., & Haikala, L. K. 2008, A&A, 492, 767Google Scholar
Könyves, V., et al. , 2010, A&A, 518, L106Google Scholar
Krumholz, M. R. & McKee, C. F. 2005, ApJ, 630, 250CrossRefGoogle Scholar
Lacy, J. H., Baas, F., Allamandola, L. J., van de Bult, C. E. P., Persson, S. E., McGregor, P. J., Lonsdale, C. J., & Geballe, T. R. 1984, ApJ, 276, 533CrossRefGoogle Scholar
Lada, C. J., Bergin, E. A., Alves, J. F., & Huard, T. L. 2003, ApJ, 586, 286CrossRefGoogle Scholar
Lada, C. J., Muench, A. A., Rathborne, J., Alves, J. F., & Lombardi, M. 2008, ApJ, 672, 410CrossRefGoogle Scholar
Lada, C. J. & Lada, E. A. 2003, ARAA, 41, 57CrossRefGoogle Scholar
Leger, A. 1983, A&A, 123, 271Google Scholar
Linsky, J. L., et al. , 2006, ApJ, 647, 1106CrossRefGoogle Scholar
Mac Low, M.-M. & Klessen, R. S. 2004, Reviews of Modern Physics, 76, 125CrossRefGoogle Scholar
Maret, S., Bergin, E. A., & Lada, C. J. 2006, Nature, 442, 425CrossRefGoogle Scholar
McKee, C. F. 1989, ApJ, 345, 782CrossRefGoogle Scholar
Melnick, G. J. & Bergin, E. A. 2005, Advances in Space Research, 36, 1027CrossRefGoogle Scholar
Millar, T. J., Bennett, A., & Herbst, E. 1989, ApJ, 340, 906CrossRefGoogle Scholar
Molinari, S., et al. , 2010, A&A, 518, L100Google Scholar
Myers, P. C., Linke, R. A., & Benson, P. J. 1983, ApJ, 264, 517CrossRefGoogle Scholar
Öberg, K. I., van Broekhuizen, F., Fraser, H. J., Bisschop, S. E., van Dishoeck, E. F., & Schlemmer, S. 2005, ApJ, 621, L33CrossRefGoogle Scholar
Ohashi, N., Lee, S. W., Wilner, D. J., & Hayashi, M. 1999, ApJ, 518, L41CrossRefGoogle Scholar
Ormel, C. W., Paszun, D., Dominik, C., & Tielens, A. G. G. M. 2009, A&A, 502, 845Google Scholar
Ossenkopf, V. & Henning, T. 1994, A&A, 291, 943Google Scholar
Padovani, M., Walmsley, C. M., Tafalla, M., Galli, D., & Müller, H. S. P. 2009, A&A, 505, 1199Google Scholar
Pagani, L., Bacmann, A., Cabrit, S., & Vastel, C. 2007, A&A, 467, 179Google Scholar
Pagani, L., et al. , 2009, A&A, 494, 623Google Scholar
Palous, J., Tenorio-Tagle, G., & Franco, J. 1994, MNRAS, 270, 75CrossRefGoogle Scholar
Parise, B., Belloche, A., Du, F., Güsten, R., & Menten, K. M. 2011, A&A, 526, A31Google Scholar
Pavlyuchenkov, Y., Wiebe, D., Shustov, B., Henning, T., Launhardt, R., & Semenov, D. 2008, ApJ, 689, 335CrossRefGoogle Scholar
Perault, M., et al. , 1996, A&A, 315, L165Google Scholar
Peretto, N. & Fuller, G. A. 2009, A&A, 505, 405Google Scholar
Peretto, N., et al. , 2010, A&A, 518, L98Google Scholar
Pilbratt, G. L., et al. , 2010, A&A, 518, L1Google Scholar
Pillai, T., Wyrowski, F., Carey, S. J., & Menten, K. M. 2006, A&A, 450, 569Google Scholar
Pillai, T., Wyrowski, F., Hatchell, J., Gibb, A. G., & Thompson, M. A. 2007, A&A, 467, 207Google Scholar
Pineda, J. E., Caselli, P., & Goodman, A. A. 2008, ApJ, 679, 481CrossRefGoogle Scholar
Pineda, J. E., Goodman, A. A., Arce, H. G., Caselli, P., Longmore, S., & Corder, S. 2011, ApJ, in press (arXiv:1106.5474)Google Scholar
Poelman, D. R., Spaans, M., & Tielens, A. G. G. M. 2007, A&A, 464, 1023Google Scholar
Ragan, S., Bergin, E., & Wilner, D. 2011, ApJ, in press (arXiv:1105.4182)Google Scholar
Rathborne, J. M., Jackson, J. M., & Simon, R. 2006, ApJ, 641, 389CrossRefGoogle Scholar
Rathborne, J. M., Lada, C. J., Muench, A. A., Alves, J. F., Kainulainen, J., & Lombardi, M. 2009, ApJ, 699, 742CrossRefGoogle Scholar
Roberts, H., Herbst, E., & Millar, T. J. 2003, ApJ, 591, L41CrossRefGoogle Scholar
Salpeter, E. E. 1955, ApJ, 121, 161CrossRefGoogle Scholar
Schnee, S., Caselli, P., Goodman, A., Arce, H. G., Ballesteros-Paredes, J., & Kuchibhotla, K. 2007, ApJ, 671, 1839CrossRefGoogle Scholar
Shu, F. H., Adams, F. C., & Lizano, S. 1987, ARAA, 25, 23CrossRefGoogle Scholar
Stamatellos, D., Griffin, M. J., Kirk, J. M., Molinari, S., Sibthorpe, B., Ward-Thompson, D., Whitworth, A. P., & Wilcock, L. A. 2010, MNRAS, 409, 12CrossRefGoogle Scholar
Swift, J. J. 2009, ApJ, 705, 1456CrossRefGoogle Scholar
Tafalla, M., Myers, P. C., Caselli, P., & Walmsley, C. M. 2004, A&A, 416, 191Google Scholar
Tafalla, M., Santiago-García, J., Myers, P. C., Caselli, P., Walmsley, C. M., & Crapsi, A. 2006, A&A, 455, 577Google Scholar
Tan, J. C. 2000, ApJ, 536, 173CrossRefGoogle Scholar
Tan, J. C. 2005, Cores to Clusters: Star Formation with Next Generation Telescopes, 87Google Scholar
Teyssier, D., Hennebelle, P., & Pérault, M. 2002, A&A, 382, 624Google Scholar
Troscompt, N., Faure, A., Maret, S., Ceccarelli, C., Hily-Blant, P., & Wiesenfeld, L. 2009, A&A, 506, 1243Google Scholar
van der Tak, F. F. S., Caselli, P., & Ceccarelli, C. 2005, A&A, 439, 195Google Scholar
van der Tak, F. F. S., et al. , 2010, A&A, 518, L107Google Scholar
van Dishoeck, E. F., Blake, G. A., Draine, B. T., & Lunine, J. I. 1993, Protostars and Planets III, 163Google Scholar
van Dishoeck, E. F., et al. , 2011, PASP, 123, 138CrossRefGoogle Scholar
van Loo, S., Falle, S. A. E. G., Hartquist, T. W., & Moore, T. J. T. 2007, A&A, 471, 213Google Scholar
Vastel, C., Caselli, P., Ceccarelli, C., Phillips, T., Wiedner, M. C., Peng, R., Houde, M., & Dominik, C. 2006, ApJ, 645, 1198CrossRefGoogle Scholar
Vasyunina, T., Linz, H., Henning, T., Zinchenko, I., Beuther, H., & Voronkov, M. 2011, A&A, 527, A88Google Scholar
Vastel, C., Caux, E., Ceccarelli, C., Castets, A., Gry, C., & Baluteau, J. P. 2000, A&A, 357, 994Google Scholar
Vastel, C., Phillips, T. G., & Yoshida, H. 2004, ApJ, 606, L127CrossRefGoogle Scholar
Walmsley, C. M., Flower, D. R., & Pineau des Forêts, G. 2004, A&A, 418, 1035Google Scholar
Ward-Thompson, D., Motte, F., & Andre, P. 1999, MNRAS, 305, 143CrossRefGoogle Scholar
Ward-Thompson, D., Scott, P. F., Hills, R. E., & Andre, P. 1994, MNRAS, 268, 276CrossRefGoogle Scholar
Wilcock, L. A., et al. , 2011, A&A, 526, A159Google Scholar
Willacy, K., Langer, W. D., & Velusamy, T. 1998, ApJ, 507, L171CrossRefGoogle Scholar
Zhang, Q., Wang, Y., Pillai, T., & Rathborne, J. 2009, ApJ, 696, 268CrossRefGoogle Scholar
Zhang, S. B., Yang, J., Xu, Y., Pandian, J. D., Menten, K. M., & Henkel, C. 2011, ApJS, 193, 10CrossRefGoogle Scholar
Zucconi, A., Walmsley, C. M., & Galli, D. 2001, A&A, 376, 650Google Scholar