Ruprecht-Karls-Universität Heidelberg
Subproject B1: Star Formation, ISM Dynamics, and the Filamentary Skeleton of the Milky Way

Subproject B1: Star Formation, ISM Dynamics, and the Filamentary Skeleton of the Milky Way

Ralf Klessen (ITA), Henrik Beuther (MPIA), Volker Springel (HITS/ARI)

The moving-mesh code AREPO coupled with a time-dependent chemical network for the most relevant atomic and molecular species in the ISM along with a realistic link between matter and the ambient radiation field allows one to investigate star formation and the destruction of molecular gas in simulated spiral galaxies – one of the outcomes of the first funding period. These novel numerical techniques to model the Galactic disk as a whole in unprecedented physical detail permit us, for instance, to follow the evolution of H2 and CO column densities and to estimate the CO emission and the CO-H2 conversion factor. Interestingly, for the Milky Way around 40% of the total molecular mass should be in CO-dark regions. The CO-dark molecular gas primarily resides in extremely long (> 100 pc) filaments that are stretched between spiral arms by Galactic shear. Only the centers of the filaments are bright in CO, hence the observed filamentary molecular clouds in the Milky Way may be only small parts of much larger structures.

Exploring this is greater detail is one of the goals for the second funding period. We wish to focus on the following questions: What is the role of large-scale filaments in the formation and evolution of molecular clouds? Are large filamentary structures mainly found in the spiral arms or rather in the inter-arm regions? What are the physical properties of these filaments? What drives filament fragmentation? How are the filament fragments related to the actual star formation processes? Can supernovae drive the observed ISM turbulence, or are expanding HII regions and stellar winds needed? Using the moving-mesh code AREPO, we will perform global simulations of the ISM in the Milky Way including time-dependent chemistry as well as radiative transfer. Based on archival observational data, we will identify and characterize the largest filaments (> 50 pc) in the Milky Way, and put them into context with the global structure of our Galaxy.

Publications

Schober, Jennifer; Schleicher, D. R. G.; Klessen, R. S.
06/2017 MNRAS 468, 946


Peters, Thomas; Zhukovska, Svitlana; Naab, Thorsten; Girichidis, Philipp; Walch, Stefanie; Glover, Simon C. O.; Klessen, Ralf S.; Clark, Paul C.; Seifried, Daniel
06/2017 MNRAS 467, 4322


Schauer, Anna T. P.; Agarwal, Bhaskar; Glover, Simon C. O.; Klessen, Ralf S.; Latif, Muhammad A.; Mas-Ribas, Lluís; Rydberg, Claes-Erik; Whalen, Daniel J.; Zackrisson, Erik
05/2017 MNRAS 467, 2288


Sormani, Mattia C.; Treß, Robin G.; Klessen, Ralf S.; Glover, Simon C. O.
04/2017 MNRAS 466, 407


Gatto, Andrea; Walch, Stefanie; Naab, Thorsten; Girichidis, Philipp; Wünsch, Richard; Glover, Simon C. O.; Klessen, Ralf S.; Clark, Paul C.; Peters, Thomas; Derigs, Dominik; Baczynski, Christian; Puls, Joachim
04/2017 MNRAS 466, 1903


Peters, Thomas; Naab, Thorsten; Walch, Stefanie; Glover, Simon C. O.; Girichidis, Philipp; Pellegrini, Eric; Klessen, Ralf S.; Wünsch, Richard; Gatto, Andrea; Baczynski, Christian
04/2017 MNRAS 466, 3293


Pardi, A.; Girichidis, P.; Naab, T.; Walch, S.; Peters, T.; Heitsch, F.; Glover, S. C. O.; Klessen, R. S.; Wünsch, R.; Gatto, A.
03/2017 MNRAS 465, 4611


Peñaloza, Camilo H.; Clark, Paul C.; Glover, Simon C. O.; Shetty, Rahul; Klessen, Ralf S.
02/2017 MNRAS 465, 2277


Howard, Corey; Pudritz, Ralph; Klessen, Ralf
01/2017 ApJ 834, 40


Bertelli Motta, C.; Clark, P. C.; Glover, S. C. O.; Klessen, R. S.; Pasquali, A.
11/2016 MNRAS 462, 4171


Glover, Simon C. O.; Smith, Rowan J.
11/2016 MNRAS 462, 3011


Sparre, Martin; Springel, Volker
11/2016 MNRAS 462, 2418


Zhukovska, Svitlana; Dobbs, Clare; Jenkins, Edward B.; Klessen, Ralf S.
11/2016 ApJ 831, 147


Caffau, E.; Bonifacio, P.; Spite, M.; Spite, F.; Monaco, L.; Sbordone, L.; François, P.; Gallagher, A. J.; Plez, B.; Zaggia, S.; Ludwig, H.-G.; Cayrel, R.; Koch, A.; Steffen, M.; Salvadori, S.; Klessen, R.; Glover, S.; Christlieb, N.
10/2016 A&A 595, L6


Beuther, H.; Bihr, S.; Rugel, M.; Johnston, K.; Wang, Y.; Walter, F.; Brunthaler, A.; Walsh, A. J.; Ott, J.; Stil, J.; Henning, Th.; Schierhuber, T.; Kainulainen, J.; Heyer, M.; Goldsmith, P. F.; Anderson, L. D.; Longmore, S. N.; Klessen, R. S.; Glover, S. C. O.; Urquhart, J. S.; Plume, R.; Ragan, S. E.; Schneider, N.; McClure-Griffiths, N. M.; Menten, K. M.; Smith, R.; Roy, N.; Shanahan, R.; Nguyen-Luong, Q.; Bigiel, F.
10/2016 A&A 595, A32


Konstandin, L.; Schmidt, W.; Girichidis, P.; Peters, T.; Shetty, R.; Klessen, R. S.
08/2016 MNRAS 460, 4483


Simpson, Christine M.; Pakmor, Rüdiger; Marinacci, Federico; Pfrommer, Christoph; Springel, Volker; Glover, Simon C. O.; Clark, Paul C.; Smith, Rowan J.
08/2016 ApJ 827, L29


Schober, J.; Schleicher, D. R. G.; Klessen, R. S.
08/2016 ApJ 827, 109


Hartwig, Tilman; Volonteri, Marta; Bromm, Volker; Klessen, Ralf S.; Barausse, Enrico; Magg, Mattis; Stacy, Athena
07/2016 MNRAS 460, L74


Szucs, László; Glover, Simon C. O.; Klessen, Ralf S.
07/2016 MNRAS 460, 82


Shetty, Rahul; Roman-Duval, Julia; Hony, Sacha; Cormier, Diane; Klessen, Ralf S.; Konstandin, Lukas K.; Loredo, Thomas; Pellegrini, Eric W.; Ruppert, David
07/2016 MNRAS 460, 67


Hu, Chia-Yu; Naab, Thorsten; Walch, Stefanie; Glover, Simon C. O.; Clark, Paul C.
06/2016 MNRAS 458, 3528


Ibáñez-Mejía, Juan C.; Mac Low, Mordecai-Mark; Klessen, Ralf S.; Baczynski, Christian
06/2016 ApJ 824, 41


Abreu-Vicente, J.; Ragan, S.; Kainulainen, J.; Henning, Th.; Beuther, H.; Johnston, K.
05/2016 A&A 590, A131


Ossenkopf-Okada, V.; Csengeri, T.; Schneider, N.; Federrath, C.; Klessen, R. S.
05/2016 A&A 590, A104


Schmidt, Tobias M.; Bigiel, Frank; Klessen, Ralf S.; de Blok, W. J. G.
04/2016 MNRAS 457, 2642


Bihr, S.; Johnston, K. G.; Beuther, H.; Anderson, L. D.; Ott, J.; Rugel, M.; Bigiel, F.; Brunthaler, A.; Glover, S. C. O.; Henning, T.; Heyer, M. H.; Klessen, R. S.; Linz, H.; Longmore, S. N.; McClure-Griffiths, N. M.; Menten, K. M.; Plume, R.; Schierhuber, T.; Shanahan, R.; Stil, J. M.; Urquhart, J. S.; Walsh, A. J.
04/2016 A&A 588, A97


Glover, Simon C. O.; Clark, Paul C.
03/2016 MNRAS 456, 3596


Girichidis, Philipp; Walch, Stefanie; Naab, Thorsten; Gatto, Andrea; Wünsch, Richard; Glover, Simon C. O.; Klessen, Ralf S.; Clark, Paul C.; Peters, Thomas; Derigs, Dominik; Baczynski, Christian
03/2016 MNRAS 456, 3432


Schneider, N.; Bontemps, S.; Motte, F.; Ossenkopf, V.; Klessen, R. S.; Simon, R.; Fechtenbaum, S.; Herpin, F.; Tremblin, P.; Csengeri, T.; Myers, P. C.; Hill, T.; Cunningham, M.; Federrath, C.
03/2016 A&A 587, A74


Bertram, Erik; Glover, Simon C. O.; Clark, Paul C.; Ragan, Sarah E.; Klessen, Ralf S.
02/2016 MNRAS 455, 3763


Smith, Rowan J.; Glover, Simon C. O.; Klessen, Ralf S.; Fuller, Gary A.
02/2016 MNRAS 455, 3640


Walsh, Andrew J.; Beuther, Henrik; Bihr, Simon; Johnston, Katharine G.; Dawson, Joanne R.; Ott, Jürgen; Longmore, Steven N.; Nguyen-Luong, Q.; Klessen, Ralf S.; Ragan, Sarah; McClure-Griffiths, Naomi; Brunthaler, Andreas; Urquhart, James; Menten, Karl; Bigiel, Frank; Wyrowski, Friedrich; Rugel, Michael
02/2016 MNRAS 455, 3494


Roman-Duval, Julia; Heyer, Mark; Brunt, Christopher M.; Clark, Paul; Klessen, Ralf; Shetty, Rahul
02/2016 ApJ 818, 144


Girichidis, Philipp; Naab, Thorsten; Walch, Stefanie; Hanasz, Michal; Mac Low, Mordecai-Mark; Ostriker, Jeremiah P.; Gatto, Andrea; Peters, Thomas; Wünsch, Richard; Glover, Simon C. O.; Klessen, Ralf S.; Clark, Paul C.; Baczynski, Christian
01/2016 ApJ 816, L19


Schauer, Anna T. P.; Whalen, Daniel J.; Glover, Simon C. O.; Klessen, Ralf S.
12/2015 MNRAS 454, 2441


De Pree, C. G.; Peters, T.; Mac Low, M. M.; Wilner, D. J.; Goss, W. M.; Galván-Madrid, R.; Keto, E. R.; Klessen, R. S.; Monsrud, A.
12/2015 ApJ 815, 123


Baczynski, C.; Glover, S. C. O.; Klessen, R. S.
11/2015 MNRAS 454, 380


Walch, S.; Girichidis, P.; Naab, T.; Gatto, A.; Glover, S. C. O.; Wünsch, R.; Klessen, R. S.; Clark, P. C.; Peters, T.; Derigs, D.; Baczynski, C.
11/2015 MNRAS 454, 238


Peters, Thomas; Girichidis, Philipp; Gatto, Andrea; Naab, Thorsten; Walch, Stefanie; Wünsch, Richard; Glover, Simon C. O.; Clark, Paul C.; Klessen, Ralf S.; Baczynski, Christian
11/2015 ApJ 813, L27


Abreu-Vicente, J.; Kainulainen, J.; Stutz, A.; Henning, Th.; Beuther, H.
09/2015 A&A 581, A74


Clark, Paul C.; Glover, Simon C. O.
09/2015 MNRAS 452, 2057


Ernst, A.; Berczik, P.; Just, A.; Noel, T.
08/2015 AN 336, 577


Bertram, Erik; Glover, Simon C. O.; Clark, Paul C.; Klessen, Ralf S.
08/2015 MNRAS 451, 3679


Bihr, S.; Beuther, H.; Ott, J.; Johnston, K. G.; Brunthaler, A.; Anderson, L. D.; Bigiel, F.; Carlhoff, P.; Churchwell, E.; Glover, S. C. O.; Goldsmith, P. F.; Heitsch, F.; Henning, T.; Heyer, M. H.; Hill, T.; Hughes, A.; Klessen, R. S.; Linz, H.; Longmore, S. N.; McClure-Griffiths, N. M.; Menten, K. M.; Motte, F.; Nguyen-Luong, Q.; Plume, R.; Ragan, S. E.; Roy, N.; Schilke, P.; Schneider, N.; Smith, R. J.; Stil, J. M.; Urquhart, J. S.; Walsh, A. J.; Walter, F.
08/2015 A&A 580, A112


Bertram, Erik; Klessen, Ralf S.; Glover, Simon C. O.
07/2015 MNRAS 451, 196


Stanchev, Orlin; Veltchev, Todor V.; Kauffmann, Jens; Donkov, Sava; Shetty, Rahul; Körtgen, Bastian; Klessen, Ralf S.
07/2015 MNRAS 451, 1056


Bonifacio, P.; Caffau, E.; Spite, M.; Limongi, M.; Chieffi, A.; Klessen, R. S.; François, P.; Molaro, P.; Ludwig, H.-G.; Zaggia, S.; Spite, F.; Plez, B.; Cayrel, R.; Christlieb, N.; Clark, P. C.; Glover, S. C. O.; Hammer, F.; Koch, A.; Monaco, L.; Sbordone, L.; Steffen, M.
07/2015 A&A 579, A28


Stolte, A.; Hußmann, B.; Olczak, C.; Brandner, W.; Habibi, M.; Ghez, A. M.; Morris, M. R.; Lu, J. R.; Clarkson, W. I.; Anderson, J.
06/2015 A&A 578, A4


Schneider, N.; Csengeri, T.; Klessen, R. S.; Tremblin, P.; Ossenkopf, V.; Peretto, N.; Simon, R.; Bontemps, S.; Federrath, C.
06/2015 A&A 578, A29


Gatto, A.; Walch, S.; Low, M.-M. Mac; Naab, T.; Girichidis, P.; Glover, S. C. O.; Wünsch, R.; Klessen, R. S.; Clark, P. C.; Baczynski, C.; Peters, T.; Ostriker, J. P.; Ibáñez-Mejía, J. C.; Haid, S.
05/2015 MNRAS 449, 1057


Hony, S.; Gouliermis, D. A.; Galliano, F.; Galametz, M.; Cormier, D.; Chen, C.-H. R.; Dib, S.; Hughes, A.; Klessen, R. S.; Roman-Duval, J.; Smith, L.; Bernard, J.-P.; Bot, C.; Carlson, L.; Gordon, K.; Indebetouw, R.; Lebouteiller, V.; Lee, M.-Y.; Madden, S. C.; Meixner, M.; Oliveira, J.; Rubio, M.; Sauvage, M.; Wu, R.
04/2015 MNRAS 448, 1847


Schneider, N.; Ossenkopf, V.; Csengeri, T.; Klessen, R. S.; Federrath, C.; Tremblin, P.; Girichidis, P.; Bontemps, S.; André, Ph.
03/2015 A&A 575, A79


Hartwig, Tilman; Bromm, Volker; Klessen, Ralf S.; Glover, Simon C. O.
03/2015 MNRAS 447, 3892


Bertram, Erik; Konstandin, Lukas; Shetty, Rahul; Glover, Simon C. O.; Klessen, Ralf S.
02/2015 MNRAS 446, 3777


Hartwig, Tilman; Clark, Paul C.; Glover, Simon C. O.; Klessen, Ralf S.; Sasaki, Mei
02/2015 ApJ 799, 114


Schober, J.; Schleicher, D. R. G.; Klessen, R. S.
01/2015 MNRAS 446, 2


Konstandin, L.; Shetty, R.; Girichidis, P.; Klessen, R. S.
01/2015 MNRAS 446, 1775


Seifried, D.; Banerjee, R.; Pudritz, R. E.; Klessen, R. S.
01/2015 MNRAS 446, 2776


Editor: T. Lisker
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