Results 1 to 10 of about 4,487,784 (169)

Galaxy Evolution with Manifold Learning [PDF]

Entropy
Matter in the early Universe was nearly uniform, and galaxies emerged through the gravitational growth of small primordial density fluctuations. Astrophysics has been trying to unveil the complex physical phenomena that have caused the formation and ...
Tsutomu T. Takeuchi, Suchetha Cooray, Ryusei R. Kano   +2 more
doaj   +2 more sources

COSMOS2020: The galaxy stellar mass function. The assembly and star formation cessation of galaxies at 0.2 < z < 7.5 [PDF]

Astronomy & Astrophysics, 2022
How galaxies form, assemble, and cease their star-formation is a central question within the modern landscape of galaxy evolution studies. These processes are indelibly imprinted on the galaxy stellar mass function (SMF).
J. Weaver, I. Davidzon, S. Toft, O. Ilbert, H. McCracken, K. Gould, C. Jespersen, C. Steinhardt, C. Lagos, P. Capak, C. Casey, N. Chartab, A. Faisst, C. Hayward, J. Kartaltepe, O. B. Kauffmann, A. Koekemoer, V. Kokorev, C. Laigle, D. Liu, A. Long, G. Magdis, C. McPartland, B. Milvang-Jensen, B. Mobasher, A. Moneti, Y. Peng, D. Sanders, M. Shuntov, A. Sneppen, F. Valentino, L. Zalesky, G. Zamorani   +32 more
semanticscholar   +1 more source

Stellar coronal mass ejections [PDF]

Serbian Astronomical Journal, 2022
Stellar coronal mass ejections (CMEs) are a growing research field, especially during the past decade. The large number of so far detected exoplanets raises the open question for the CME activity of stars, as CMEs may strongly affect ...
Leitzinger M., Odert P.
doaj   +1 more source

An Isolated Stellar-mass Black Hole Detected through Astrometric Microlensing [PDF]

Astrophysical Journal, 2022
We report the first unambiguous detection and mass measurement of an isolated stellar-mass black hole (BH). We used the Hubble Space Telescope (HST) to carry out precise astrometry of the source star of the long-duration (t E ≃ 270 days), high ...
K. Sahu, Jay Anderson, S. Casertano, H. Bond, A. Udalski, M. Dominik, A. Calamida, A. Bellini, T. Brown, M. Rejkuba, V. Bajaj, N. Kains, H. Ferguson, Chris L. Fryer, P. Yock, P. Mróz, S. Kozłowski, P. Pietrukowicz, R. Poleski, J. Skowron, I. Soszyński, M. Szymański, K. Ulaczyk, L. Wyrzykowski, J. Beaulieu, J. Marquette, A. Cole, K. Hill, S. Dieters, C. Coutures, D. Dominis-Prester, É. Bachelet, J. Menzies, M. Albrow, K. Pollard, A. Gould, J. Yee, W. Allen, L. Almeida, G. Christie, J. Drummond, A. Gal-yam, E. Gorbikov, F. Jablonski, Chung-Uk Lee, D. Maoz, I. Manulis, J. Mccormick, T. Natusch, R. Pogge, Y. Shvartzvald, U. G. Jørgensen, K. Alsubai, M. Andersen, V. Bozza, S. C. Novati, T. Hinse, M. Hundertmark, T. Husser, E. Kerins, P. Longa-Peña, L. Mancini, M. Penny, S. Rahvar, D. Ricci, S. Sajadian, J. Skottfelt, C. Snodgrass, J. Southworth, J. Tregloan-Reed, J. Wambsganss, O. Wertz, Y. Tsapras, R. Street, D. Bramich, K. Horne, Iain A. Steele STScI, Psu, U. Warsaw, U. S. Andrews, Eső, U. Columbia, Los Alamos National Lab., U. Auckland, U. Warwick, 1. U. Tasmania, Iap Paris, U. Bordeaux, Nat. Astron. Obs. Japan, Las Cumbres Obs., Saao, S. Africa, U. Canterbury, N. Zealand, Max-Planck-Inst, Heidelberg, Ohio state Univ., Cfa, Cambridge, Vintage Lane Obs, U. Valencia, Spain, Auckland Obs. New Zealand, Possum Obs. New Zealand, Univ. Southern Queensland, Australia., Weizmann Inst of Sci, Israel, T. Univ., K. Astron, S. Institute, Weizmann Inst of Sci, Farm Cove Obs, Irasr, U. Copenhagen, Denmark, Qeeri, Doha, Qatar, U. Salerno, Italy, Istit. Naz. Fis. Nucl., Napoli, Ipac, Pasadena, Inst. Astron., Toruń, Poland, Chungnam Nat. Univ., S. Korea, U. Heidelberg, Germany., Universitat Gottingen, Jodrell Bank Centre Astroph., Manchester, Uk, U. Antofagasta, Chile, U. Rome, Inaf, Turin, Louisiana State Univ., B. Rouge, Usa, Sharif Univ. of Tech., Tehran, Iran, Padova, Isfahan Univ. Tech., Isfahan, Open University, M. Keynes, U. Edinburgh, Keele Univ., Staffordshire, U. Atacama, U. Liege, R Belgium, N. Dhabi, Uae, Liverpool John Moores Univ., Ogle Collaboration, PLANETRoboNET Collaboration, microFUN Collaboration, MiNDSTEp Consortium, R. Collaboration   +165 more
semanticscholar   +1 more source

Hierarchical mergers of stellar-mass black holes and their gravitational-wave signatures [PDF]

Nature Astronomy, 2021
While most of the compact-binary mergers detected by LIGO and Virgo are expected to consist of first-generation black holes formed from the collapse of stars, others might instead be of second (or higher) generation, containing the remnants of previous ...
D. Gerosa, M. Fishbach
semanticscholar   +1 more source

Extreme value statistics of the halo and stellar mass distributions at high redshift: are JWST results in tension with ΛCDM? [PDF]

Monthly notices of the Royal Astronomical Society, 2022
The distribution of dark matter halo masses can be accurately predicted in the ΛCDM cosmology. The presence of a single massive halo or galaxy at a particular redshift, assuming some baryon and stellar fraction for the latter, can therefore be used to ...
C. Lovell, I. Harrison, Y. Harikane, S. Tacchella, S. Wilkins   +4 more
semanticscholar   +1 more source

Galaxy Stellar Mass Functions from z ∼ 10 to z ∼ 6 using the Deepest Spitzer/Infrared Array Camera Data: No Significant Evolution in the Stellar-to-halo Mass Ratio of Galaxies in the First Gigayear of Cosmic Time [PDF]

Astrophysical Journal, 2021
We present new stellar mass functions at z ∼ 6, z ∼ 7, z ∼ 8, z ∼ 9 and, for the first time, z ∼ 10, constructed from ∼800 Lyman-break galaxies previously identified over the eXtreme Deep Field and Hubble Ultra-Deep Field parallel fields and the five ...
M. Stefanon, R. Bouwens, I. Labbé, G. Illingworth, V. González, P. Oesch   +5 more
semanticscholar   +1 more source

Formation Channels of Single and Binary Stellar-Mass Black Holes [PDF]

Handbook of Gravitational Wave Astronomy, 2021
These are exciting times for binary black hole (BBH) research. LIGO and Virgo detections are progressively drawing a spectacular fresco of BBH masses, spins and merger rates.
M. Mapelli
semanticscholar   +1 more source

Extending the evolution of the stellar mass–size relation at z ≤ 2 to low stellar mass galaxies from HFF and CANDELS [PDF]

Monthly notices of the Royal Astronomical Society, 2021
We reliably extend the stellar mass–size relation over 0.2 ≤ z ≤ 2 to low stellar mass galaxies by combining the depth of Hubble Frontier Fields with the large volume covered by CANDELS.
K. Nedkova, B. Häussler, D. Marchesini, P. Dimauro, G. Brammer, P. Eigenthaler, A. Feinstein, H. Ferguson, M. Huertas-Company, E. Johnston, E. Kado-Fong, J. Kartaltepe, I. Labbé, Daniel Lange-Vagle, N. Martis, E. McGrath, A. Muzzin, P. Oesch, Y. Órdenes-Briceño, T. Puzia, H. Shipley, B. Simmons, R. Skelton, M. Stefanon, A. van der Wel, K. Whitaker   +25 more
semanticscholar   +1 more source

Mass distribution in the Galactic Center based on interferometric astrometry of multiple stellar orbits [PDF]

Astronomy & Astrophysics, 2021
The stars orbiting the compact radio source Sgr A* in the Galactic Centre are precision probes of the gravitational field around the closest massive black hole.
G. C. R. Abuter, N. Aimar, A. Amorim, J. Ball, M. Baubock, J. Berger, H. Bonnet, G. Bourdarot, W. Brandner, V. Cardoso, Y. Clénet, Y. Dallilar, R. Davies, P. D. de Zeeuw, J. Dexter, A. Drescher, F. Eisenhauer, N. F. Forster Schreiber, A. Foschi, P. Garcia, F. Gao, E. Gendron, R. Genzel, S. Gillessen, M. Habibi, X. Haubois, G. Heißel, T. Henning, S. Hippler, M. Horrobin, L. Jochum, L. Jocou, A. Kaufer, P. Kervella, S. Lacour, V. Lapeyrère, J. Le Bouquin, P. L'ena, D. Lutz, T. Ott, T. Paumard, K. Perraut, G. Perrin, O. Pfuhl, S. Rabien, J. Shangguan, T. Shimizu, S. Scheithauer, J. Stadler, A. Stephens, O. Straub, C. Straubmeier, E. Sturm, L. Tacconi, K. Tristram, F. Vincent, S. V. von Fellenberg, F. Widmann, E. Wieprecht, E. Wiezorrek, J. Woillez, S. Yazici, A. Young, G. Zins   +63 more
semanticscholar   +1 more source