From filamentary clouds to prestellar cores to the stellar IMF

Initial highlights from the Herschel Gould Belt Survey

Ph Andre, A. Men'shchikov, S. Bontemps, V. Koenyves, F. Motte, N. Schneider, P. Didelon, V. Minier, P. Saraceno, D. Ward-Thompson, J. Di Francesco, G. White, S. Molinari, L. Testi, A. Abergel, Mary Griffin, Th. Henning, P. Royer, Bruno Merin, R. Vavrek & 37 others M. Attard, D. Arzoumanian, C. D. Wilson, P. Ade, H. Aussel, J. P. Baluteau, M. Benedettini, J. Ph Bernard, J. A. D. L. Blommaert, L. Cambresy, P. Cox, A. Di Giorgio, P. Hargrave, M. Hennemann, Minyun Huang, K. J. Kirk, O. Krause, R. Launhardt, S. Leeks, J. Le Pennec, J. Z. Li, P. G. Martin, A. Maury, G. Olofsson, A. Omont, N. Peretto, S. Pezzuto, T. Prusti, H. Roussel, D. Russeil, M. Sauvage, B. Sibthorpe, A. Sicilia-Aguilar, L. Spinoglio, C. Waelkens, A. Woodcraft, A. Zavagno

Research output: Contribution to journalLetter

675 Citations (Scopus)

Abstract

We summarize the first results from the Gould Belt Survey, obtained toward the Aquila rift and Polaris Flare regions during the science demonstration phase of Herschel. Our 70-500 mu m images taken in parallel mode with the SPIRE and PACS cameras reveal a wealth of filamentary structure, as well as numerous dense cores embedded in the filaments. Between similar to 350 and 500 prestellar cores and similar to 45-60 Class 0 protostars can be identified in the Aquila field, while similar to 300 unbound starless cores and no protostars are observed in the Polaris field. The prestellar core mass function (CMF) derived for the Aquila region bears a strong resemblance to the stellar initial mass function (IMF), already confirming the close connection between the CMF and the IMF with much better statistics than earlier studies. Comparing and contrasting our Herschel results in Aquila and Polaris, we propose an observationally-driven scenario for core formation according to which complex networks of long, thin filaments form first within molecular clouds, and then the densest filaments fragment into a number of prestellar cores via gravitational instability.
Original languageEnglish
Article numberL102
Number of pages7
JournalAstronomy and Astrophysics
Volume518
DOIs
Publication statusPublished - 16 Jul 2010

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filaments
protostars
gravitational instability
bears
molecular clouds
flares
cameras
fragments
statistics
science

Keywords

  • stars: formation circumstellar matter ISM: clouds ISM: structure submillimeter: ISM OPHIUCHI MOLECULAR CLOUD MASS FUNCTION INTERSTELLAR CLOUDS SCUBA SURVEY PROTOSTARS FRAGMENTATION EMISSION SPECTRA CLUSTER ORIGIN

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Andre, Ph ; Men'shchikov, A. ; Bontemps, S. ; Koenyves, V. ; Motte, F. ; Schneider, N. ; Didelon, P. ; Minier, V. ; Saraceno, P. ; Ward-Thompson, D. ; Di Francesco, J. ; White, G. ; Molinari, S. ; Testi, L. ; Abergel, A. ; Griffin, Mary ; Henning, Th. ; Royer, P. ; Merin, Bruno ; Vavrek, R. ; Attard, M. ; Arzoumanian, D. ; Wilson, C. D. ; Ade, P. ; Aussel, H. ; Baluteau, J. P. ; Benedettini, M. ; Bernard, J. Ph ; Blommaert, J. A. D. L. ; Cambresy, L. ; Cox, P. ; Di Giorgio, A. ; Hargrave, P. ; Hennemann, M. ; Huang, Minyun ; Kirk, K. J. ; Krause, O. ; Launhardt, R. ; Leeks, S. ; Le Pennec, J. ; Li, J. Z. ; Martin, P. G. ; Maury, A. ; Olofsson, G. ; Omont, A. ; Peretto, N. ; Pezzuto, S. ; Prusti, T. ; Roussel, H. ; Russeil, D. ; Sauvage, M. ; Sibthorpe, B. ; Sicilia-Aguilar, A. ; Spinoglio, L. ; Waelkens, C. ; Woodcraft, A. ; Zavagno, A. / From filamentary clouds to prestellar cores to the stellar IMF : Initial highlights from the Herschel Gould Belt Survey. In: Astronomy and Astrophysics. 2010 ; Vol. 518.
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title = "From filamentary clouds to prestellar cores to the stellar IMF: Initial highlights from the Herschel Gould Belt Survey",
abstract = "We summarize the first results from the Gould Belt Survey, obtained toward the Aquila rift and Polaris Flare regions during the science demonstration phase of Herschel. Our 70-500 mu m images taken in parallel mode with the SPIRE and PACS cameras reveal a wealth of filamentary structure, as well as numerous dense cores embedded in the filaments. Between similar to 350 and 500 prestellar cores and similar to 45-60 Class 0 protostars can be identified in the Aquila field, while similar to 300 unbound starless cores and no protostars are observed in the Polaris field. The prestellar core mass function (CMF) derived for the Aquila region bears a strong resemblance to the stellar initial mass function (IMF), already confirming the close connection between the CMF and the IMF with much better statistics than earlier studies. Comparing and contrasting our Herschel results in Aquila and Polaris, we propose an observationally-driven scenario for core formation according to which complex networks of long, thin filaments form first within molecular clouds, and then the densest filaments fragment into a number of prestellar cores via gravitational instability.",
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author = "Ph Andre and A. Men'shchikov and S. Bontemps and V. Koenyves and F. Motte and N. Schneider and P. Didelon and V. Minier and P. Saraceno and D. Ward-Thompson and {Di Francesco}, J. and G. White and S. Molinari and L. Testi and A. Abergel and Mary Griffin and Th. Henning and P. Royer and Bruno Merin and R. Vavrek and M. Attard and D. Arzoumanian and Wilson, {C. D.} and P. Ade and H. Aussel and Baluteau, {J. P.} and M. Benedettini and Bernard, {J. Ph} and Blommaert, {J. A. D. L.} and L. Cambresy and P. Cox and {Di Giorgio}, A. and P. Hargrave and M. Hennemann and Minyun Huang and Kirk, {K. J.} and O. Krause and R. Launhardt and S. Leeks and {Le Pennec}, J. and Li, {J. Z.} and Martin, {P. G.} and A. Maury and G. Olofsson and A. Omont and N. Peretto and S. Pezzuto and T. Prusti and H. Roussel and D. Russeil and M. Sauvage and B. Sibthorpe and A. Sicilia-Aguilar and L. Spinoglio and C. Waelkens and A. Woodcraft and A. Zavagno",
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doi = "10.1051/0004-6361/201014666",
language = "English",
volume = "518",
journal = "Astronomy and Astrophysics",
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Andre, P, Men'shchikov, A, Bontemps, S, Koenyves, V, Motte, F, Schneider, N, Didelon, P, Minier, V, Saraceno, P, Ward-Thompson, D, Di Francesco, J, White, G, Molinari, S, Testi, L, Abergel, A, Griffin, M, Henning, T, Royer, P, Merin, B, Vavrek, R, Attard, M, Arzoumanian, D, Wilson, CD, Ade, P, Aussel, H, Baluteau, JP, Benedettini, M, Bernard, JP, Blommaert, JADL, Cambresy, L, Cox, P, Di Giorgio, A, Hargrave, P, Hennemann, M, Huang, M, Kirk, KJ, Krause, O, Launhardt, R, Leeks, S, Le Pennec, J, Li, JZ, Martin, PG, Maury, A, Olofsson, G, Omont, A, Peretto, N, Pezzuto, S, Prusti, T, Roussel, H, Russeil, D, Sauvage, M, Sibthorpe, B, Sicilia-Aguilar, A, Spinoglio, L, Waelkens, C, Woodcraft, A & Zavagno, A 2010, 'From filamentary clouds to prestellar cores to the stellar IMF: Initial highlights from the Herschel Gould Belt Survey', Astronomy and Astrophysics, vol. 518, L102. https://doi.org/10.1051/0004-6361/201014666

From filamentary clouds to prestellar cores to the stellar IMF : Initial highlights from the Herschel Gould Belt Survey. / Andre, Ph; Men'shchikov, A.; Bontemps, S.; Koenyves, V.; Motte, F.; Schneider, N.; Didelon, P.; Minier, V.; Saraceno, P.; Ward-Thompson, D.; Di Francesco, J.; White, G.; Molinari, S.; Testi, L.; Abergel, A.; Griffin, Mary; Henning, Th.; Royer, P.; Merin, Bruno; Vavrek, R.; Attard, M.; Arzoumanian, D.; Wilson, C. D.; Ade, P.; Aussel, H.; Baluteau, J. P.; Benedettini, M.; Bernard, J. Ph; Blommaert, J. A. D. L.; Cambresy, L.; Cox, P.; Di Giorgio, A.; Hargrave, P.; Hennemann, M.; Huang, Minyun; Kirk, K. J.; Krause, O.; Launhardt, R.; Leeks, S.; Le Pennec, J.; Li, J. Z.; Martin, P. G.; Maury, A.; Olofsson, G.; Omont, A.; Peretto, N.; Pezzuto, S.; Prusti, T.; Roussel, H.; Russeil, D.; Sauvage, M.; Sibthorpe, B.; Sicilia-Aguilar, A.; Spinoglio, L.; Waelkens, C.; Woodcraft, A.; Zavagno, A.

In: Astronomy and Astrophysics, Vol. 518, L102, 16.07.2010.

Research output: Contribution to journalLetter

TY - JOUR

T1 - From filamentary clouds to prestellar cores to the stellar IMF

T2 - Initial highlights from the Herschel Gould Belt Survey

AU - Andre, Ph

AU - Men'shchikov, A.

AU - Bontemps, S.

AU - Koenyves, V.

AU - Motte, F.

AU - Schneider, N.

AU - Didelon, P.

AU - Minier, V.

AU - Saraceno, P.

AU - Ward-Thompson, D.

AU - Di Francesco, J.

AU - White, G.

AU - Molinari, S.

AU - Testi, L.

AU - Abergel, A.

AU - Griffin, Mary

AU - Henning, Th.

AU - Royer, P.

AU - Merin, Bruno

AU - Vavrek, R.

AU - Attard, M.

AU - Arzoumanian, D.

AU - Wilson, C. D.

AU - Ade, P.

AU - Aussel, H.

AU - Baluteau, J. P.

AU - Benedettini, M.

AU - Bernard, J. Ph

AU - Blommaert, J. A. D. L.

AU - Cambresy, L.

AU - Cox, P.

AU - Di Giorgio, A.

AU - Hargrave, P.

AU - Hennemann, M.

AU - Huang, Minyun

AU - Kirk, K. J.

AU - Krause, O.

AU - Launhardt, R.

AU - Leeks, S.

AU - Le Pennec, J.

AU - Li, J. Z.

AU - Martin, P. G.

AU - Maury, A.

AU - Olofsson, G.

AU - Omont, A.

AU - Peretto, N.

AU - Pezzuto, S.

AU - Prusti, T.

AU - Roussel, H.

AU - Russeil, D.

AU - Sauvage, M.

AU - Sibthorpe, B.

AU - Sicilia-Aguilar, A.

AU - Spinoglio, L.

AU - Waelkens, C.

AU - Woodcraft, A.

AU - Zavagno, A.

PY - 2010/7/16

Y1 - 2010/7/16

N2 - We summarize the first results from the Gould Belt Survey, obtained toward the Aquila rift and Polaris Flare regions during the science demonstration phase of Herschel. Our 70-500 mu m images taken in parallel mode with the SPIRE and PACS cameras reveal a wealth of filamentary structure, as well as numerous dense cores embedded in the filaments. Between similar to 350 and 500 prestellar cores and similar to 45-60 Class 0 protostars can be identified in the Aquila field, while similar to 300 unbound starless cores and no protostars are observed in the Polaris field. The prestellar core mass function (CMF) derived for the Aquila region bears a strong resemblance to the stellar initial mass function (IMF), already confirming the close connection between the CMF and the IMF with much better statistics than earlier studies. Comparing and contrasting our Herschel results in Aquila and Polaris, we propose an observationally-driven scenario for core formation according to which complex networks of long, thin filaments form first within molecular clouds, and then the densest filaments fragment into a number of prestellar cores via gravitational instability.

AB - We summarize the first results from the Gould Belt Survey, obtained toward the Aquila rift and Polaris Flare regions during the science demonstration phase of Herschel. Our 70-500 mu m images taken in parallel mode with the SPIRE and PACS cameras reveal a wealth of filamentary structure, as well as numerous dense cores embedded in the filaments. Between similar to 350 and 500 prestellar cores and similar to 45-60 Class 0 protostars can be identified in the Aquila field, while similar to 300 unbound starless cores and no protostars are observed in the Polaris field. The prestellar core mass function (CMF) derived for the Aquila region bears a strong resemblance to the stellar initial mass function (IMF), already confirming the close connection between the CMF and the IMF with much better statistics than earlier studies. Comparing and contrasting our Herschel results in Aquila and Polaris, we propose an observationally-driven scenario for core formation according to which complex networks of long, thin filaments form first within molecular clouds, and then the densest filaments fragment into a number of prestellar cores via gravitational instability.

KW - stars: formation circumstellar matter ISM: clouds ISM: structure submillimeter: ISM OPHIUCHI MOLECULAR CLOUD MASS FUNCTION INTERSTELLAR CLOUDS SCUBA SURVEY PROTOSTARS FRAGMENTATION EMISSION SPECTRA CLUSTER ORIGIN

U2 - 10.1051/0004-6361/201014666

DO - 10.1051/0004-6361/201014666

M3 - Letter

VL - 518

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

M1 - L102

ER -