Results 141 to 150 of about 184,560 (234)

Catalogue of the morphological features in the Spitzer Survey of Stellar Structure in Galaxies (S$^4$G)

, 2015
A catalogue of the morphological features for the complete Spitzer Survey of Stellar Structure in Galaxies (S$^4$G), including 2352 nearby galaxies, is presented.
Díaz-García, S., Herrera-Endoqui, M., Laurikainen, E., Salo, H.   +3 more
core   +1 more source

Orbital Support and Evolution of CX/OX Structures in Boxy/Peanut Bars

The Astrophysical Journal
Barred galaxies exhibit boxy/peanut or X-shapes (BP/X) protruding from their disks in edge-on views. Two types of BP/X morphologies exist depending on whether the X-wings meet at the center (CX) or are off-centered (OX).
Behzad Tahmasebzadeh, Shashank Dattathri, Monica Valluri, Juntai Shen, Ling Zhu, Vance Wheeler, Ortwin Gerhard, Sandeep Kumar Kataria, Leandro Beraldo e Silva, Kathryne J. Daniel   +9 more
doaj   +1 more source

Ring or No Ring—Revisiting the Multiphase Nuclear Environment in M31

The Astrophysical Journal
Nuclear rings, prevalent in barred galaxies, are essential to understanding gas transport toward galactic nuclei. However, the peculiar nuclear ring in our neighboring galaxy M31 remains poorly understood.
Zongnan Li, Zhao Su, Sumin Wang, Yufan F. Zhou, Zhiyuan Li, Xuanyi Lyu, Fanyi Meng, Kai Zhang, Di Li, Chaowei Tsai, Jingwen Wu, Jiachang Zhang   +11 more
doaj   +1 more source

Ring Star Formation Rates in Barred and Nonbarred Galaxies

, 2010
Nonbarred ringed galaxies are relatively normal galaxies showing bright rings of star formation in spite of lacking a strong bar. This morphology is interesting because it is generally accepted that a typical ring forms when material collects near a ...
Athanassoula, Bournaud, Buta, Buta, Buta, Buta, Buta, Buta, Buta, Buta, Byrd, Combes, Contopoulos, Contopoulos, de Vaucouleurs, Donovan, E. Laurikainen, Finn, Friedli, Grouchy, Grouchy, H. Salo, Hameed, Hameed, Howarth, Kennicutt, Kohoutek, Koopmann, Madore, Mark, Martinet, McCall, R. D. Grouchy, R. J. Buta, Rautiainen, Regan, Salo, Sandage, Sandage, Schinnerer, Schwarz, Schwarz, Schwarz, Seaton, Sellwood, Shen, Sil'chenko, Tamburro, Tomita, Treuthardt, Wozniak, Wu, Wu, Yasuda, Zhang   +54 more
core   +1 more source

Effects of Halo Spin on the Formation and Evolution of Bars in Disk Galaxies

The Astrophysical Journal
The spin of dark halos has been shown to significantly affect bar formation and evolution in disk galaxies. To understand the physical role of halo spin in bar formation, we run N -body simulations of isolated, Milky Way–sized galaxies by varying the ...
Dajeong Jang, Woong-Tae Kim
doaj   +1 more source

Double-Barred Galaxies: I. A Catalog of Barred Galaxies with Stellar Secondary Bars and Inner Disks

, 2003
I present a catalog of 67 barred galaxies which contain distinct, elliptical stellar structures inside their bars. Fifty of these are double-barred galaxies: a small-scale, "inner" or "secondary" bar is embedded within a large-scale, "outer" or "primary"
Afanasiev, Alard, Alonso-Herrero, Ann, Athanassoula, Athanassoula, Barth, Baumgart, Benedict, Bettoni, Bock, Busarello, Buta, Buta, Buta, Buta, Buta, Buta, Buta, Buta, Buta, Buta, Capetti, Carollo, Colina, de Vaucouleurs, de Vaucouleurs, Di Nella, El-Zant, Elmegreen, Elmegreen, Emsellem, Emsellem, Erwin, Erwin, Erwin, Erwin, Eskridge, Fisher, Freedman, Frei, Friedli, Friedli, García-Barreto, Gebhardt, Greusard, Higdon, Hunter, Idiart, Jarvis, Jogee, Jungwiert, Knapen, Knapen, Knapen, Koribalski, Kormendy, Kormendy, Kormendy, Kornreich, Kotilainen, Laine, Laurikainen, Loursenso, Lütticke, Maciejewski, Maciejewski, Maciejewski, Marcum, Martin, Martini, Martini, Martini, McElroy, Moiseev, Moiseev, Moore, Mulchaey, Mulder, Márquez, Möllenhoff, Möllenhoff, Nagar, Neistein, Nieto, Oliva, Ondrechen, Paturel, Peletier, Peter Erwin, Petitpas, Petitpas, Pfenniger, Phillips, Pierce, Pogge, Prada, Prieto, Prugniel, Pérez, Pérez-Ramírez, Quillen, Quillen, Rautiainen, Rautiainen, Regan, Regan, Roussel, Ryder, Sandage, Schinnerer, Schinnerer, Schweizer, Scoville, Sempere, Shaw, Shaw, Sheth, Shlosman, Shlosman, Storchi-Bergman, Tacconi-Garman, van den Bosch, van Driel, van Driel, van Loon, Weinberger, Wozniak, Wozniak   +128 more
core   +1 more source

The Milky Way’s Rowdy Neighbors: The Effects of the Large Magellanic Cloud and Sagittarius Dwarf on the Milky Way Disk

The Astrophysical Journal
The Milky Way (MW) is a barred spiral galaxy shaped by tidal interactions with its satellites. The Large Magellanic Cloud (LMC) and the Sagittarius dwarf galaxy (Sgr) are the dominant influences at the present day. This paper presents a suite of four 10 ^
Ioana A. Stelea, Jason A. S. Hunt, Kathryn V. Johnston   +2 more
doaj   +1 more source

Inner Workings: Astronomers are redrawing our corner of the Milky Way. [PDF]

Proc Natl Acad Sci U S A, 2021
Croswell K.
europepmc   +1 more source

The kinematics and structure of the neutral hydrogen in the barred spiral galaxy NGC 3359.

, 1982
The barred spiral galaxy NGC 3359 has been observed with the three-element line interferometer of the National Radio Astronomy Observatory. An angular resolution of 42'' x 31'' was achieved with a velocity resolution of 24.5 km/s.
S. Gottesman
semanticscholar   +1 more source

Astronomia ex machina: a history, primer and outlook on neural networks in astronomy. [PDF]

R Soc Open Sci, 2023
Smith MJ, Geach JE.
europepmc   +1 more source