Results 91 to 100 of about 1,357,920 (351)

Stellar Feedback & Bulge Formation in Clumpy Disks

, 2011
11 pages, 4 figures, MNRAS (Revised to match accepted version, additional numerical tests added).
Hopkins, Philip F., Keres, Dusan, Murray, Norman, Quataert, Eliot, Hernquist, Lars   +4 more
openaire   +2 more sources

Bursting with Feedback: The Relationship between Feedback Model and Bursty Star Formation Histories in Dwarf Galaxies

The Astrophysical Journal
Due to their inability to self-regulate, ultrafaint dwarfs are sensitive to prescriptions in subgrid physics models that converge and regulate at higher masses.
Bianca Azartash-Namin, Anna Engelhardt, Ferah Munshi, B. W. Keller, Alyson M. Brooks, Jordan Van Nest, Charlotte R. Christensen, Tom Quinn, James Wadsley   +8 more
doaj   +1 more source

Theoretical Re-evaluations of Scaling Relations between SMBHs and Their Host Galaxies–2. Importance of AGN Feedback Suggested by Stellar Age–Velocity Dispersion Relation

Frontiers in Astronomy and Space Sciences, 2017
We present the galactic stellar age—velocity dispersion relation obtained from a semi-analytic model of galaxy formation. We divide galaxies into two populations: galaxies which have over-massive/under-massive black holes (BHs) against the best-fitting ...
Hikari Shirakata, Toshihiro Kawaguchi, Takashi Okamoto, Tomoaki Ishiyama   +3 more
doaj   +1 more source

Star Formation Variability as a Probe for the Baryon Cycle within Galaxies

The Astrophysical Journal, 2023
We investigate the connection between the regulation of star formation and the cycling of baryons both within and in and out of galaxies. We use idealized numerical simulations of Milky Way–mass galaxies, in which we vary the galaxy morphology and ...
Eun-jin Shin, Sandro Tacchella, Ji-hoon Kim, Kartheik G. Iyer, Vadim A. Semenov   +4 more
doaj   +1 more source

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

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

The Impact of Feedback on Disk Galaxy Scaling Relations

, 2009
We use a disk galaxy evolution model to investigate the impact of mass outflows (a.k.a. feedback) on disk galaxy scaling relations. Our model follows the accretion, cooling, star formation and ejection of baryonic mass inside growing dark matter haloes ...
Aaron A. Dutton, Abadi, Avila-Reese, Barnes, Bell, Bell, Benson, Birnboim, Blanton, Blitz, Blitz, Blumenthal, Bruzual, Bryan, Bullock, Bullock, Chabrier, Cole, Cole, Courteau, Courteau, Cox, Croton, D'Onghia, Dalcanton, Davis, de Jong, Dekel, Djorgovski, Dressler, Dunkley, Dutton, Dutton, Eke, El-Zant, El-Zant, Elmegreen, Erb, Fall, Ferguson, Finlator, Firmani, Frank C. van den Bosch, Gao, Garnett, Geha, Gnedin, Gnedin, Governato, Hatton, Hoekstra, Holley-Bockelmann, Jardel, Kannappan, Kauffmann, Kennicutt, Kennicutt, Keres, Klypin, Macciò, Macciò, Magorrian, Maller, Maller, Mandelbaum, Martin, McGaugh, McGaugh, McGaugh, Milgrom, Mo, Mo, Moore, Murray, Navarro, Navarro, Navarro, Noordermeer, Pelupessy, Pizagno, Pizagno, Read, Robertson, Sakai, Schaye, Schmidt, Sellwood, Sharma, Shen, Somerville, Somerville, Spergel, Stringer, Sutherland, Tollerud, Tonini, Toomre, Tully, van Albada, van den Bosch, van den Bosch, van den Bosch, van den Bosch, van den Bosch, van den Bosch, Verheijen, Wechsler, Weinberg, Weiner, Weinzirl, Wong, Wu, Yang, Zhao   +113 more
core   +2 more sources

Sources of X-rays from galaxies [PDF]

, 2011
Galactic X-ray emission is a manifestation of various high-energy phenomena and processes. The brightest X-ray sources are typically accretion-powered objects: active galactic nuclei and low- or high-mass X-ray binaries.
Liu, Persic, Porquet, Q. Daniel Wang, Revnivtsev, Revnivtsev, Sazonov, Tüllmann, Weźgowiec, Yuan, Zhang   +10 more
core   +1 more source

Impact of galactic shear and stellar feedback on star formation [PDF]

Astronomy & Astrophysics, 2018
Context. Feedback processes and the galactic shear regulate star formation. Aims. We investigate the effects of differential galactic rotation and stellar feedback on the interstellar medium (ISM) and on the star formation rate (SFR). Methods.
C. Colling, P. Hennebelle, S. Geen, O. Iffrig, F. Bournaud   +4 more
semanticscholar   +1 more source