Results 31 to 40 of about 41,072 (339)

Feedback from massive stars and gas expulsion from proto-globular clusters [PDF]

, 2015
© 2015. The American Astronomical Society. All rights reserved. Globular clusters (GCs) are considerably more complex structures than previously thought, harboring at least two stellar generations that present clearly distinct chemical abundances ...
Calura, F., D'Ercole, A., Few, C. G., Romano, D.   +3 more
core   +3 more sources

A Census of the Circumstellar Disk Populations in the Sco-Cen Complex

The Astronomical Journal, 2021
I have used mid-infrared (IR) photometry from the Wide-field Infrared Survey Explorer (WISE) to perform a census of circumstellar disks among ∼10,000 candidate members of the Sco-Cen complex that were recently identified with data from the Gaia mission ...
K. L. Luhman
doaj   +1 more source

Isolated OB Associations in Stripped HI Gas Clouds

, 2008
HST ACS/HRC images in UV (F250W), V (F555W), and I (F814W) resolve three isolated OB associations that lie up to 30 kpc from the stellar disk of the S0 galaxy NGC 1533.
Chiosi C., Duc P.-A., Duc P.-A., E. V. Ryan‐Weber, G. R. Meurer, Goodwin S. P., Ivanov G. R., J. K. Werk, K. C. Freeman, M. E. Putman, M. S. Oey, Meynet G., R. C. Kennicutt, Jr.   +12 more
core   +1 more source

A multiphysics and multiscale software environment for modeling astrophysical systems [PDF]

, 2008
We present MUSE, a software framework for combining existing computational tools for different astrophysical domains into a single multiphysics, multiscale application.
Andrea Sottoriva, Barnes, Baumgardt, Belkus, Belleman, Breanndán Ó Nualláin, Davies, Derek Groen, Douglas Heggie, Eggleton, Eggleton, Eggleton, Ercolano, Evert Glebbeek, Evghenii Gaburov, Fregeau, Fregeau, Freitag, Fryxell, Fujii, Gaburov, Glebbeek, Gürkan, Harfst, Heggie, Henyey, Houria Belkus, Hut, Hut, James Lombardi, John Fregeau, Joris van Bever, Joshi, King, Kinoshita, Lombardi, Makino, Makino, Makino, Marcel Zemp, Mario Jurić, Michiko Fujii, Ofer Yaron, Peter Teuben, Piet Hut, Plummer, Portegies Zwart, Portegies Zwart, Portegies Zwart, Portegies Zwart, Portegies Zwart, Portegies Zwart, Rob Izzard, Rycerz, Rycerz, Salpeter, Sambaran Banerjee, Sills, Simon Portegies Zwart, Springel, Stefan Harfst, Stephen Justham, Steve McMillan, Suzuki, Tassos Fragos, Vangelis Angelou, Wisdom   +66 more
core   +2 more sources

Massive runaway stars in the Small Magellanic Cloud [PDF]

, 2010
Using archival Spitzer Space Telescope data, we identified for the first time a dozen runaway OB stars in the Small Magellanic Cloud (SMC) through the detection of their bow shocks.
Bica, Blaauw, Bolatto, Chiosi, Chu, Clark, de Wit, Esteban, Evans, Evans, Evans, Foellmi, Foellmi, Garmany, Garnett, Gies, Gvaramadze, Gvaramadze, Gvaramadze, Gvaramadze, Gvaramadze, Gvaramadze, Gvaramadze, Hamann, Harris, Henize, Hennekemper, Hilditch, Hodge, Hoogerwerf, Huthoff, J. Pflamm-Altenburg, Koenigsberger, Kroupa, Lennon, Leonard, Massey, Massey, Massey, Massey, Massey, Massey, Massey, Massey, Mdzinarishvili, Moeckel, Moffat, Noriega-Crespo, Oblak, Oey, P. Kroupa, Parker, Pflamm-Altenburg, Pflamm-Altenburg, Poveda, Price, Rieke, Sabbi, Schilbach, Skrutskie, Smith, V. V. Gvaramadze, Van Buren, Zinnecker   +63 more
core   +2 more sources

The distinction between star clusters and associations

, 2010
In Galactic studies a distinction is made between (open) star clusters and associations. For barely resolved objects at a distance of several Mpc this distinction is not trivial to make. Here we provide an objective definition by comparing the age of the
Ambartsumian, Blaauw, Bressert, Elmegreen, Gieles, Gieles, Kroupa, Lada, Mark Gieles, Portegies Zwart, Simon F. Portegies Zwart   +10 more
core   +1 more source

Lower limit for differential rotation in members of young loose stellar associations [PDF]

, 2016
Surface differential rotation (SDR) plays a key role in dynamo models. SDR estimates are therefore essential for constraining theoretical models. We measure a lower limit to SDR in a sample of solar-like stars belonging to young associations with the aim
Distefano, E., Lanza, A. F., Lanzafame, A. C., Messina, S., Spada, F.   +4 more
core   +2 more sources

Six More Ultra-faint Milky Way Companions Discovered in the DECam Local Volume Exploration Survey

The Astrophysical Journal, 2023
We report the discovery of six ultra-faint Milky Way satellites identified through matched-filter searches conducted using Dark Energy Camera (DECam) data processed as part of the second data release of the DECam Local Volume Exploration (DELVE) survey ...
W. Cerny, C. E. Martínez-Vázquez, A. Drlica-Wagner, A. B. Pace, B. Mutlu-Pakdil, T. S. Li, A. H. Riley, D. Crnojević, C. R. Bom, J. A. Carballo-Bello, J. L. Carlin, A. Chiti, Y. Choi, M. L. M. Collins, E Darragh-Ford, P. S. Ferguson, M. Geha, D. Martínez-Delgado, P. Massana, S. Mau, G. E. Medina, R. R. Muñoz, E. O. Nadler, N. E. D. Noël, K. A. G. Olsen, A. Pieres, J. D. Sakowska, J. D. Simon, G. S. Stringfellow, E. J. Tollerud, A. K. Vivas, A. R. Walker, R. H. Wechsler, DELVE Collaboration   +33 more
doaj   +1 more source

Mapping the Recent Star Formation History of the Disk of M51

, 2010
Using data acquired as part of a unique Hubble Heritage imaging program of broadband colors of the interacting spiral system M51/NGC 5195, we have conducted a photometric study of the stellar associations across the entire disk of the galaxy in order to ...
Brown, Catherine Kaleida, de Vaucouleurs, Elmegreen, Feldmeier, Hernquist, Hwang, Lamers, Lee, Mink, Mink, Mutchler, Papovich, Paul A. Scowen, Rey, Sandage, Schlegel, Scoville, Whitmore, Úbeda   +19 more
core   +1 more source

The embedded cluster or association Trumpler 37 in IC1396: a search for evolutionary constraints [PDF]

, 2012
It is currently widely accepted that open star clusters and stellar associations result from the evolution of embedded star clusters. Parameters such star formation efficiency, time-scale of gas removal and velocity dispersion can be determinants of ...
Bica, E., Bonatto, C., Saurin, T. A.
core   +2 more sources