Results 51 to 60 of about 611,346 (300)

DEEP RADIO CONTINUUM IMAGING OF THE DWARF IRREGULAR GALAXY IC 10: TRACING STAR FORMATION AND MAGNETIC FIELDS [PDF]

, 2011
We exploit the vastly increased sensitivity of the Expanded Very Large Array to study the radio continuum and polarization properties of the post-starburst, dwarf irregular galaxy IC 10 at 6 cm, at a linear resolution of ∼50 pc.
V. Heesen, U. Rau, M. Rupen, E. Brinks, D. Hunter   +4 more
semanticscholar   +1 more source

THE MAGNETIC FIELD OF THE IRREGULAR GALAXY NGC 4214 [PDF]

, 2011
We examine the magnetic field in NGC 4214, a nearby irregular galaxy, using multi-wavelength radio continuum polarization data from the Very Large Array.
A. Kepley, E. Zweibel, E. Wilcots, Kelsey E. Johnson, T. Robishaw   +4 more
semanticscholar   +1 more source

CEERS Key Paper. III. The Diversity of Galaxy Structure and Morphology at z = 3–9 with JWST

The Astrophysical Journal Letters, 2023
We present a comprehensive analysis of the evolution of the morphological and structural properties of a large sample of galaxies at z = 3–9 using early James Webb Space Telescope (JWST) CEERS NIRCam observations. Our sample consists of 850 galaxies at z
Jeyhan S. Kartaltepe, Caitlin Rose, Brittany N. Vanderhoof, Elizabeth J. McGrath, Luca Costantin, Isabella G. Cox, L. Y. Aaron Yung, Dale D. Kocevski, Stijn Wuyts, Henry C. Ferguson, Micaela B. Bagley, Steven L. Finkelstein, Ricardo O. Amorín, Brett H. Andrews, Pablo Arrabal Haro, Bren E. Backhaus, Peter Behroozi, Laura Bisigello, Antonello Calabrò, Caitlin M. Casey, Rosemary T. Coogan, M. C. Cooper, Darren Croton, Alexander de la Vega, Mark Dickinson, Adriano Fontana, Maximilien Franco, Andrea Grazian, Norman A. Grogin, Nimish P. Hathi, Benne W. Holwerda, Marc Huertas-Company, Kartheik G. Iyer, Shardha Jogee, Intae Jung, Lisa J. Kewley, Allison Kirkpatrick, Anton M. Koekemoer, James Liu, Jennifer M. Lotz, Ray A. Lucas, Jeffrey A. Newman, Camilla Pacifici, Viraj Pandya, Casey Papovich, Laura Pentericci, Pablo G. Pérez-González, Jayse Petersen, Nor Pirzkal, Marc Rafelski, Swara Ravindranath, Raymond C. Simons, Gregory F. Snyder, Rachel S. Somerville, Elizabeth R. Stanway, Amber N. Straughn, Sandro Tacchella, Jonathan R. Trump, Jesús Vega-Ferrero, Stephen M. Wilkins, Guang Yang, Jorge A. Zavala   +61 more
doaj   +1 more source

Diffuse Ionized Gas in the Dwarf Irregular Galaxy DDO 53

, 2007
The spectral characteristics throughout the dwarf irregular galaxy DDO 53 are studied. The results are very similar to those for other irregular galaxies: high excitation and low values of the [SII]/Halpha ratio.
A. M. Hidalgo-Gámez, Begum A., Benvenuti P., Caplan J., Dopita M. A., Hidalgo-Gamez A. M., Moles M., Olofsson K., Otte B., Pagel B. E. J., Pilyugin L. S., Schuster W. J., Stasinska G.   +12 more
core   +1 more source

Evolutionary paths among different red galaxy types at 0.3 < z < 1.5 and the late buildup of massive E-S0's through major mergers [PDF]

, 2012
Some recent observations seem to disagree with hierarchical theories of galaxy formation about the role played by major mergers in the late buildup of massive E-S0's.
Abreu, David, Balcells, Marc, Barro, Guillermo, Cristobal-Hornillos, David, Dominguez-Palmero, Lilian, Eliche-Moral, M. Carmen, Erwin, Peter, Gallego, Jesus, Guzman, Rafael, Hempel, Angela, Lopez-Sanjuan, Carlos, Perez-Gonzalez, Pablo G., Prieto, Mercedes, Zamorano, Jaime   +13 more
core   +3 more sources

Global properties of irregular galaxies

The Astrophysical Journal Supplement Series, 1982
We present optical and radio observations of global properties for a sample of noninteracting irregular galaxies and a few comparison objects. Program galaxies were chosen primarily on the basis of their blue colors and thus may be expected to represent systems with high rates of star formation.
D. A. Hunter, J. S. Gallagher, D. Rautenkranz   +2 more
openaire   +1 more source

THE M81 GROUP DWARF IRREGULAR GALAXY DDO 165. I. HIGH-VELOCITY NEUTRAL GAS IN A POST-STARBURST SYSTEM [PDF]

, 2011
We present new multi-configuration Very Large Array H i spectral line observations of the M81 group dwarf irregular post-starburst galaxy DDO 165. The H i morphology is complex, with multiple column density peaks surrounding a large region of very low H ...
J. Cannon, Hans P. Most, E. Skillman, D. Weisz, D. Cook, A. Dolphin, R. Kennicutt, Janice C. Lee, A. Seth, F. Walter, S. Warren   +10 more
semanticscholar   +1 more source

What Does the Milky Way Look Like?

The Astrophysical Journal, 2023
In spite of much work, the overall spiral structure morphology of the Milky Way remains somewhat uncertain. In the last two decades, accurate distance measurements have provided us with an opportunity to solve this issue.
Y. Xu, C. J. Hao, D. J. Liu, Z. H. Lin, S. B. Bian, L. G. Hou, J. J. Li, Y. J. Li   +7 more
doaj   +1 more source

THE ROLE OF THE MAGNETIC FIELD IN THE INTERSTELLAR MEDIUM OF THE POST-STARBURST DWARF IRREGULAR GALAXY NGC 1569 [PDF]

, 2010
NGC 1569 is a nearby dwarf irregular galaxy which underwent an intense burst of star formation 10–40 Myr ago. We present observations that reach surface brightnesses 2–80 times fainter than previous radio continuum observations and the first radio ...
A. Kepley, S. Muehle, J. Everett, E. Zweibel, E. Wilcots, U. Klein   +5 more
semanticscholar   +1 more source

A Revised Parallel-Sequence Morphological Classification of Galaxies: Structure and Formation of S0 and Spheroidal Galaxies [PDF]

, 2011
We update van den Bergh's parallel sequence galaxy classification in which S0 galaxies form a sequence S0a-S0b-S0c that parallels the sequence Sa-Sb-Sc of spiral galaxies.
Abramson, Arnaboldi, Arnaboldi, Arnaboldi, Arnaboldi, Arnaboldi, Baggett, Baldry, Bell, Bender, Bender, Bender, Bender, Bender, Bender, Bender, Bernardi, Binggeli, Binggeli, Binggeli, Blanton, Blanton, Boselli, Bullock, Buta, Buta, Buta, Buta, Buta, Böker, Böker, Chen, Chiboukas, Chung, Chung, Combes, Courteau, Côté, Da Costa, Davé, De Rijcke, de Souza, de Vaucouleurs, Djorgovski, Dressler, Faber, Ferguson, Ferrarese, Fisher, Freeland, Gavazzi, Geha, Geha, Geisler, Glass, Gonzalez, Graham, Graham, Graham, Grebel, Hamabe, Hinz, Hogg, Hogg, Hopkins, Hopkins, Hopkins, Hubble, Hurley-Keller, Ibata, Ibata, Ibata, Irwin, Jerjen, Jerjen, Jerjen, John Kormendy, Jørgensen, Karachentsev, Kazantzidis, Kelson, Kenney, Kenney, Kenney, Kirby, Komatsu, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Krajnović, Krick, Lake, Larson, Laurikainen, Laurikainen, Li, Lisker, Lisker, Martin, Mateo, Mayer, Mayer, Mei, Merritt, Mihos, Mihos, Mihos, Milosavljević, Moore, Moore, Morgan, Mori, Naab, Neistein, Okamura, Oser, Oser, Peng, Pildis, Press, Ralf Bender, Robertson, Saglia, Saito, Sandage, Sandage, Sandage, Sandage, Sandage, Scorza, Sellwood, Shetrone, Shetrone, Shetrone, Shetrone, Simard, Strateva, Sérsic, Temi, Tolstoy, Tonnesen, Tonnesen, Tonnesen, Tonnesen, Tremaine, Tully, van Albada, van den Bergh, van den Bergh, van den Bergh, van den Bergh, van Dokkum, van Driel, van Gorkom, van Woerden, van Zee, Veilleux, Venn, Venn, Vikhlinin, Watt, Weinzirl, Weisz, Weisz, Welch, Williams, Williams, Wilman, Yoshida   +182 more
core   +3 more sources