Results 31 to 40 of about 69,202 (236)

Making Galaxies in a Cosmological Context: The Need for Early Stellar Feedback [PDF]

, 2012
We introduce the Making Galaxies in a Cosmological Context (MaGICC) program of smoothed particle hydrodynamics (SPH) simulations. We describe a parameter study of galaxy formation simulations of an L* galaxy that uses early stellar feedback combined with
A. V. Macciò, Agertz, Agertz, Balogh, Behroozi, Benson, Birnboim, Bower, Bower, Bower, Brook, Brook, Brook, Brook, C. Brook, Chabrier, Cignoni, Conroy, Conroy, Courteau, Crain, Dalla Vecchia, Dalla Vecchia, de Blok, Dekel, Durier, Dutton, Ferland, Field, Field, Freeman, Freyer, G. S. Stinson, Gerritsen, Girardi, Governato, Governato, Guedes, Guo, H. M. P. Couchman, Hernandez, Hopkins, J. Wadsley, Jonsson, Katz, Kaufmann, Kawata, Kay, Klypin, Kroupa, Leitherer, Lupton, Macciò, Maller, Mandelbaum, McCarthy, McKee, More, More, Moster, Moster, Murray, Navarro, Oppenheimer, Raiteri, Rees, Reyes, Robertson, Rocha-Pinto, Rocha-Pinto, Sawala, Scannapieco, Scannapieco, Scannapieco, Schaye, Schulz, Shen, Slyz, Somerville, Springel, Stinson, Stinson, Stinson, Stinson, Sutherland, T. R. Quinn, Thacker, Toft, Torres, Tully, van den Bosch, van der Wel, Wadsley, Wadsley, Weisz, White   +95 more
core   +1 more source

The universal acceleration scale from stellar feedback [PDF]

Monthly Notices of the Royal Astronomical Society: Letters, 2020
ABSTRACT It has been established for decades that rotation curves deviate from the Newtonian gravity expectation given baryons alone below a characteristic acceleration scale $g_{\dagger }\sim 10^{-8}\, \rm {cm\, s^{-2}}$, a scale promoted to a new fundamental constant in MOND.
Claude André Faucher-Giguère, Philip F. Hopkins, Michael Boylan-Kolchin, Michael Y. Grudić, Michael Y. Grudić   +4 more
openaire   +3 more sources

Dust-buried Compact Sources in the Dwarf Galaxy NGC 4449

The Astrophysical Journal, 2023
Multiwavelength images from the Hubble Space Telescope covering the wavelength range 0.27–1.6 μ m show that the central area of the nearby dwarf galaxy NGC 4449 contains several tens of compact sources that are emitting in the hydrogen recombination line
Daniela Calzetti, Sean T. Linden, Timothy McQuaid, Matteo Messa, Zhiyuan Ji, Mark R. Krumholz, Angela Adamo, Bruce Elmegreen, Kathryn Grasha, Kelsey E. Johnson, Elena Sabbi, Linda J. Smith, Varun Bajaj   +12 more
doaj   +1 more source

Feedback first: the surprisingly weak effects of magnetic fields, viscosity, conduction, and metal diffusion on galaxy formation [PDF]

, 2017
Using high-resolution simulations with explicit treatment of stellar feedback physics based on the FIRE (Feedback in Realistic Environments) project, we study how galaxy formation and the interstellar medium (ISM) are affected by magnetic fields ...
Faucher-Giguere, Claude-Andre, Hayward, Christopher C., Hopkins, Philip F., Keres, Dusan, Ma, Xiangcheng, Robles, Victor H., Su, Kung-Yi   +6 more
core   +2 more sources

The Kinematic Bimodality: Efficient Feedback and Cold Gas Deficiency in Slow-rotating Galaxies

The Astrophysical Journal Letters, 2023
The bimodality in the stellar spin of low-redshift (massive) galaxies, ubiquitously existing at all star formation levels and in diverse environments, suggests that galaxies grow and quench through two diverged evolutionary pathways.
Bitao Wang, Yingjie Peng
doaj   +1 more source

Stellar evolution and feedback connections to stellar dynamics [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractUntil a few years ago, the common paradigm for the formation of Globular Clusters (GCs) was that they constitute a ‘simple stellar population’ in which all the stars were formed from a chemically homogeneous cluster medium within a relatively short interval of time, at the beginning of the galactic life.
openaire   +3 more sources

Does Feedback from Supermassive Black Holes Coevolve with the Host in Type 2 Quasars?

The Astrophysical Journal, 2023
The feedback from the accretion of central supermassive black holes (SMBHs) is a hot topic in the coevolution of SMBHs and their host galaxies. By tracing the large-scale outflow using the line profile and bulk velocity shift of [O iii ] λ 5007, the ...
S. Jin, J. Wang, M. Z. Kong, R. J. Shen, Y. X. Zhang, D. W. Xu, J. Y. Wei, Z. Xie   +7 more
doaj   +1 more source

The Structure of the Interstellar Medium of Star Forming Galaxies [PDF]

, 2012
We present numerical methods for including stellar feedback in galaxy-scale simulations. We include heating by SNe (I & II), gas recycling and shock-heating from O-star & AGB winds, HII photoionization, and radiation pressure from stellar photons.
Audit, Ballesteros-Paredes, Ballesteros-Paredes, Bell, Bolatto, Bond, Bournaud, Bournaud, Buat, Ceverino, Chevalier, Cole, Cortese, Dobbs, Dobbs, Eliot Quataert, Erb, Evans, Evans, Federrath, Fukui, Förster Schreiber, Förster Schreiber, Förster Schreiber, Genzel, Glover, Goodman, Governato, Harper-Clark, Hernquist, Heyer, Heyer, Hopkins, Hopkins, Hopkins, Iglesias-Páramo, Imara, Jonsson, Jonsson, Katz, Kennicutt, Kitsionas, Koda, Kroupa, Krumholz, Krumholz, Krumholz, Krumholz, Kuhlen, Leitherer, Li, Li, Mac Low, Mannucci, Matzner, McGaugh, McKee, McKee, Murray, Noll, Nordlund, Norman Murray, Ostriker, Ostriker, Ostriker, Padoan, Padoan, Pei, Philip F. Hopkins, Pineda, Press, Price, Price, Reddy, Robertson, Rosolowsky, Rosolowsky, Sargsyan, Scalo, Solomon, Somerville, Springel, Springel, Stinson, Swinbank, Tacconi, Takeuchi, Tasker, Tasker, Teyssier, Thacker, Torrey, Vazquez-Semadeni, Vázquez-Semadeni, Williams, Wong, Zuckerman   +96 more
core   +2 more sources

Stellar dynamics and feedback connections to stellar evolution [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractIn dense stellar systems, dynamical interactions between objects inevitably lead to frequent formation of exotic stellar objects and multiple systems, thereby imposing new questions for the stellar evolution theory. The evolutionary path of such systems could be different from that of the unperturbed objects, therefore, we must re-evaluate ...
openaire   +2 more sources

Low-mass galaxy assembly in simulations: regulation of early star formation by radiation from massive stars [PDF]

, 2014
Despite recent success in forming realistic present-day galaxies, simulations still form the bulk of their stars earlier than observations indicate. We investigate the process of stellar mass assembly in low-mass field galaxies, a dwarf and a typical ...
Arraki, Kenza, Ceverino, Daniel, Colin, Pedro, Klypin, Anatoly, Primack, Joel, Trujillo-Gomez, Sebastian   +5 more
core   +3 more sources