Results 31 to 40 of about 8,690 (179)

A panchromatic spatially resolved analysis of nearby galaxies – II. The main sequence – gas relation at sub-kpc scale in grand-design spirals [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT In this work, we analyse the connection between gas availability and the position of a region with respect to the spatially resolved main-sequence (MS) relation. Following the procedure presented in Enia et al. (2020), for a sample of five face-on, grand design spiral galaxies located on the MS we obtain estimates of stellar ...
L. Morselli, Laura Bisigello, A Enia, E. Corbelli, V. Casasola, L. Rodríguez-Muñoz, A. Renzini, Sandro Tacchella, Ivano Baronchelli, S. Bianchi, P. Cassata, A. Franceschini, C. Mancini, M. Negrello, P. Popesso, Michael Romano   +15 more
openalex   +8 more sources

Perturbed precessing ellipses as the building blocks of spiral arms in a barred galaxy with two pattern speeds [PDF]

Astronomy & Astrophysics, 2022
Observations and simulations of barred spiral galaxies have shown that, in general, the spiral arms rotate at a different pattern speed to that of the bar. The main conclusion from the bibliography is that the bar rotates faster than the spiral arms with
M. Harsoula, C.Efthymiopoulos, G. Contopoulos, A. Tzemos   +3 more
semanticscholar   +1 more source

Estimation of the Parameters of the Spiral Pattern in the Galaxy Based on a Sample of Classical Cepheids [PDF]

Astronomy letters, 2022
We consider a sample of Galactic classical Cepheids with highly accurate estimates of their distances taken from Skowron et al., where they were determined based on the period–luminosity relation.
V. Bobylev
semanticscholar   +1 more source

PHANGS–JWST First Results: Multiwavelength View of Feedback-driven Bubbles (the Phantom Voids) across NGC 628

The Astrophysical Journal Letters, 2023
We present a high-resolution view of bubbles within the Phantom Galaxy (NGC 628), a nearby (∼10 Mpc), star-forming (∼2 M _⊙ yr ^−1 ), face-on ( i ∼ 9°) grand-design spiral galaxy.
Ashley. T. Barnes, Elizabeth J. Watkins, Sharon E. Meidt, Kathryn Kreckel, Mattia C. Sormani, Robin G. Treß, Simon C. O. Glover, Frank Bigiel, Rupali Chandar, Eric Emsellem, Janice C. Lee, Adam K. Leroy, Karin M. Sandstrom, Eva Schinnerer, Erik Rosolowsky, Francesco Belfiore, Guillermo A. Blanc, Médéric Boquien, Jakob den Brok, Yixian Cao, Mélanie Chevance, Daniel A. Dale, Oleg V. Egorov, Cosima Eibensteiner, Kathryn Grasha, Brent Groves, Hamid Hassani, Jonathan D. Henshaw, Sarah Jeffreson, María J. Jiménez-Donaire, Benjamin W. Keller, Ralf S. Klessen, Eric W. Koch, J. M. Diederik Kruijssen, Kirsten L. Larson, Jing Li, Daizhong Liu, Laura A. Lopez, Eric J. Murphy, Lukas Neumann, Jérôme Pety, Francesca Pinna, Miguel Querejeta, Florent Renaud, Toshiki Saito, Sumit K. Sarbadhicary, Amy Sardone, Rowan J. Smith, Sophia K. Stuber, Jiayi Sun, David A. Thilker, Antonio Usero, Bradley C. Whitmore, Thomas G. Williams   +53 more
doaj   +1 more source

Grand Design and Flocculent Spirals in the Spitzer Survey of Stellar Structure in Galaxies (S4G)

Astrophysical Journal, 2011
D. M. Elmegreen, S G Team
openalex   +3 more sources

The detection of spiral arm modulation in the stellar disk of an optically flocculent and an optically grand design galaxy [PDF]

, 2000
Two dimensional Fourier spectra of near-infrared images of galaxies provide a powerful diagnostic tool for the detection of spiral arm modulation in stellar disks. Spiral arm modulation may be understood in terms of interference patterns of outgoing and incoming density wave packets or modes.
I. Puerari, David L. Block, Bruce G. Elmegreen, J. A. Frogel, Paul B. Eskridge   +4 more
  +5 more sources

PHANGS–JWST First Results: A Combined HST and JWST Analysis of the Nuclear Star Cluster in NGC 628

The Astrophysical Journal Letters, 2023
We combine archival Hubble Space Telescope and new James Webb Space Telescope imaging data covering the ultraviolet to mid-infrared regime to morphologically analyze the nuclear star cluster (NSC) of NGC 628, a grand-design spiral galaxy.
Nils Hoyer, Francesca Pinna, Albrecht W. H. Kamlah, Francisco Nogueras-Lara, Anja Feldmeier-Krause, Nadine Neumayer, Mattia C. Sormani, Médéric Boquien, Eric Emsellem, Anil C. Seth, Ralf S. Klessen, Thomas G. Williams, Eva Schinnerer, Ashley. T. Barnes, Adam K. Leroy, Silvia Bonoli, J. M. Diederik Kruijssen, Justus Neumann, Patricia Sánchez-Blázquez, Daniel A. Dale, Elizabeth J. Watkins, David A. Thilker, Erik Rosolowsky, Frank Bigiel, Kathryn Grasha, Oleg V. Egorov, Daizhong Liu, Karin M. Sandstrom, Kirsten L. Larson, Guillermo A. Blanc, Hamid Hassani   +30 more
doaj   +1 more source

Synthetic HI observations of a simulated spiral galaxy [PDF]

, 2010
Using the Torus radiative transfer code we produce synthetic observations of the 21 cm neutral hydrogen line from an SPH simulation of a spiral galaxy. The SPH representation of the galaxy is mapped onto an AMR grid, and a ray tracing method is used to ...
Acreman, Adler, Baba, Bergin, Braun, Chakrabarti, Chemin, Corbelli, Cox, De Avillez, Dib, Dib, Dobbs, Dobbs, Dobbs, Dobbs, Dobbs, Douglas, Douglas, Efremov, Engargiola, Gibson, Glover, Gómez, Harries, Heiles, Heyer, Kim, Lucy, Narayanan, Pinte, Price, Putman, Rhode, Roberts, Rohlfs, Rosolowsky, Rots, Rundle, Shetty, Stil, Tamburro, Tasker, Taylor, Visser, Wada, Wada, Wada, Wada, Walter, Wolfire   +50 more
core   +1 more source

Spiral arm amplitude variations and pattern speeds in the grand design galaxies M51, M81, and M100

The Astrophysical Journal, 1989
In the modal theory of galactic spiral structure, the amplitude of a prominent two-arm spiral pattern should oscillate slightly with galactocentric distance because of an interference between the outward and inward propagating waves. In the stellar dynamical theory, the spiral arm amplitudes should oscillate because of differential crowding near and ...
Bruce G. Elmegreen, P. E. Seiden, D. M. Elmegreen   +2 more
openalex   +2 more sources

A SOFIA Survey of [C ii] in the Galaxy M51. II. [C ii] and CO Kinematics across the Spiral Arms [PDF]

Astrophysical Journal, 2020
We present the first complete, velocity-resolved [C ii] 158 μm image of the M51 grand-design spiral galaxy, observed with the upgraded German Receiver for Astronomy at Terahertz frequencies instrument on the Stratospheric Observatory for Infrared ...
J. Pineda, J. Stutzki, C. Buchbender, J. Koda, C. Fischer, P. Goldsmith, S. Glover, R. Klessen, C. Kramer, B. Mookerjea, Rowan J. Smith, R. Tress, M. Ziebart   +12 more
semanticscholar   +1 more source