Results 71 to 80 of about 2,636,463 (178)

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

The impact of stellar feedback from velocity-dependent ionized gas maps – a MUSE view of Haro 11 [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We have used the capability of the Multi-Unit Spectroscopic Explorer (MUSE) instrument to explore the impact of stellar feedback at large scales in Haro 11, a galaxy under extreme starburst conditi ...
V. Menacho, Göran Östlin, A. Bik, L. Della Bruna, J. Melinder, A. Adamo, M. Hayes, E. C. Herenz, N. Bergvall   +8 more
semanticscholar   +1 more source

Metallicity Gradients in Modern Cosmological Simulations. II. The Role of Bursty versus Smooth Feedback at High Redshift

The Astrophysical Journal
The distribution of gas-phase metals within galaxies encodes the impact of stellar feedback on galactic evolution. At high redshift, when galaxies are rapidly assembling, feedback-driven outflows and turbulence can strongly reshape radial metallicity ...
Alex M. Garcia, Paul Torrey, Aniket Bhagwat, Xuejian Shen, Mark Vogelsberger, William McClymont, Jaya Nagarajan-Swenson, Sophia G. Ridolfo, Peixin Zhu, Dhruv T. Zimmerman, Oliver Zier, Sarah Biddle, Arnab Sarkar, Priyanka Chakraborty, Ruby J. Wright, Kathryn Grasha, Tiago Costa, Laura Keating, Rahul Kannan, Aaron Smith, Enrico Garaldi, Ewald Puchwein, Benedetta Ciardi, Lars Hernquist, Lisa J. Kewley   +24 more
doaj   +1 more source

M-σ relations across cosmic time

The Open Journal of Astrophysics, 2023
Feedback from active galactic nuclei (AGN) has long been invoked to explain the correlation between black hole mass and stellar velocity dispersion (M-σ) discovered in low redshift galaxies. We describe the time evolution of AGN in the M-σ plane based on
David Garofalo, Damian J. Christian, Chase Hames, Max North, Keegan Thottam, Alisaie Eckelbarger   +5 more
doaj   +1 more source

Simulating supernova feedback in galaxy disks [PDF]

, 2012
In this thesis I examine supernova feedback in hydrodynamical simulations of galaxy disks. Understanding this process entails the numerical evaluation of cooling in radiative shocks, and we present a set of simulations using two widely used numerical ...
CREASEY, PETER,EDWARD, Creasey, Peter Edward   +1 more
core  

The energy and dynamics of trapped radiative feedback with stellar winds

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT In this paper, we explore the significant, non-linear impact that stellar winds have on H ii regions. We perform a parameter study using three-dimensional radiative magnetohydrodynamic simulations of wind and ultraviolet radiation feedback from a 35 M⊙ star formed self-consistently in a turbulent, self-gravitating cloud, similar
Geen, Sam, Bieri, Rebekka, de Koter, Alex, Kimm, Taysun, Rosdahl, Joakim   +4 more
openaire   +6 more sources

Survival of molecular gas in a stellar feedback-driven outflow witnessed with the MUSE TIMER project and ALMA [PDF]

Monthly notices of the Royal Astronomical Society, 2019
Stellar feedback plays a significant role in modulating star formation, redistributing metals, and shaping the baryonic and dark structure of galaxies – however, the efficiency of its energy deposition to the interstellar medium is challenging to ...
R. Leaman, F. Fragkoudi, M. Querejeta, Gigi Y. C. Leung, D. Gadotti, B. Husemann, J. Falcón-Barroso, P. Sánchez-Blázquez, G. van de Ven, Taehyun Kim, P. Coelho, M. Lyubenova, Adriana de Lorenzo-Cáceres, M. Martig, I. Martinez-Valpuesta, J. Neumann, I. Pérez, M. Seidel   +17 more
semanticscholar   +1 more source

Quantifying Baryonic Feedback on the Warm–Hot Circumgalactic Medium in CAMELS Simulations

The Astrophysical Journal
The baryonic physics shaping galaxy formation and evolution are complex, spanning a vast range of scales and making them challenging to model. Cosmological simulations rely on subgrid models that produce significantly different predictions. Understanding
Isabel Medlock, Chloe Neufeld, Daisuke Nagai, Daniel Anglés-Alcázar, Shy Genel, Benjamin D. Oppenheimer, Xavier Sims, Priyanka Singh, Francisco Villaescusa-Navarro   +8 more
doaj   +1 more source

BUILDING THE STELLAR HALO THROUGH FEEDBACK IN DWARF GALAXIES [PDF]

The Astrophysical Journal, 2012
12 pages, 3 figures, accepted for publication in ...
Maxwell, Aaron J., Wadsley, James, Couchman, H. M. P., Mashchenko, Sergey   +3 more
openaire   +2 more sources

Bringing Stellar Evolution and Feedback Together: Summary of Proposals from the Lorentz Center Workshop

Publications of the Astronomical Society of the Pacific, 2023
Abstract Stars strongly impact their environment, and shape structures on all scales throughout the universe, in a process known as “feedback.” Due to the complexity of both stellar evolution and the physics of larger astrophysical structures, there remain many unanswered questions about how feedback operates and what we can learn about ...
Geen, S., Agrawal, P., Crowther, P.A., Keller, B.W., de Koter, A., Keszthelyi, Z., van de Voort, F., Ali, A.A., Backs, F., Bonne, L., Brugaletta, V., Derkink, A., Ekström, S., Fichtner, Y.A., Grassitelli, L., Götberg, Y., Higgins, E.R., Laplace, E., You Liow, K., Lorenzo, M., McLeod, A.F., Meynet, G., Newsome, M., André Oliva, G., Ramachandran, V., Rey, M.P., Rieder, S., Romano-Díaz, E., Sabhahit, G., Sander, A.A.C., Sarwar, R., Stinshoff, H., Stoop, M., Szécsi, D., Trebitsch, M., Vink, J.S., Winch, E.   +36 more
openaire   +6 more sources