Results 51 to 60 of about 7,649 (143)

HI and CO spectroscopy of the unusual host of GRB 171205A: A grand design spiral galaxy with a distorted HI field [PDF]

GRBs produced by the collapse of massive stars are usually found near the most prominent star-forming regions of star-forming galaxies. GRB 171205A happened in the outskirts of a spiral galaxy, a peculiar location in an atypical GRB host. In this paper we present a highly-resolved study of the molecular gas of this host, with CO(1-0) observations from ...
A. de Ugarte Postigo, M. J. Michałowski, C. C. Thoene, S. Martín, Ashwin Ashok, J. F. Agüí Fernández, M. Bremer, Kuntal Misra, D. A. Perley, K. E. Heintz, S. V. Cherukuri, W. Dimitrov, Tobias Géron, Abhik Ghosh, L. Izzo, Д. А. Канн, M. P. Koprowski, Aleksandra Leśniewska, James K. Leung, A. J. Levan, Amitesh Omar, Dagmara Oszkiewicz, M. Polińska, L. Resmi, S. Schulze   +24 more
openalex   +4 more sources

The Coherent Magnetic Field of the Milky Way

The Astrophysical Journal
We present a suite of models of the coherent magnetic field of the Galaxy based on new divergence-free parametric functions describing the global structure of the field.
Michael Unger, Glennys R. Farrar
doaj   +1 more source

Giant Cyclones in Gaseous Discs of Spiral Galaxies

, 2000
We report detection of giant cyclonic vortices in the gaseous disc of the spiral galaxy NGC 3631 in the reference frame rotating with the spiral pattern.
A.M. Fridman, A.V. Moiseev, A.V. Zasov, Afanasiev, Baev, Contopoulos, EV. Polyachenko, Fridman, Fridman, Fridman, Lyakhovich, Lyakhovich, O.K. Sil'chenko, O.V. Khoruzhii, S.N. Dodonov, Sumin, V.L. Afanas'ev   +16 more
core   +2 more sources

Density waves and star formation in grand design spirals

, 2013
HII regions in the arms of spiral galaxies are indicators of recent star-forming processes. They may have been caused by the passage of the density wave or simply created by other means near the arms.
Bongiovanni, Á., Castañeda, H., Cedrés, B., Cepa, J., Sáchez-Portal, M., Tomita, A   +5 more
core   +1 more source

Stellar Motion around Spiral Arms: Gaia Mock Data [PDF]

, 2014
We compare the stellar motion around a spiral arm created in two different scenarios, transient/co-rotating spiral arms and density-wave-like spiral arms.
Cropper, M., Grand, R. J. J., Hunt, J. A. S., Kawata, D., Pasetto, S., Siebert, A.   +5 more
core   +2 more sources

Restoring the full velocity field in the gaseous disk ofthe spiral galaxy NGC 157 [PDF]

, 2001
We analyse the line-of-sight velocity field of ionized gas in the spiral galaxy NGC 157 which has been obtained in the H\alpha emission at the 6m telescope of SAO RAS.
Afanasiev, V. L., Boulesteix, J., Dodonov, S. N., Fridman, A. M., Khoruzhii, O. V., Lyakhovich, V. V., Sil'chenko, O. K., Zasov, A. V.   +7 more
core   +2 more sources

Using synthetic emission maps to constrain the structure of the Milky Way

, 2013
We present the current standing of an investigation into the structure of the Milky Way. We use smoothed particle hydrodynamics (SPH) to simulate the ISM gas in the Milky Way under the effect of a number of different gravitational potentials representing
Acreman, David, Dobbs, Clare, Pettitt, Alex, Price, Daniel   +3 more
core   +1 more source

BVRI Surface Photometry of (S+S) Binary Galaxies. I. The data [PDF]

, 2001
We present multicolour broad band ($BVRI$) photometry for a sample of 33 spiral-spiral (S+S) binary galaxies drawn from the Karachentsev Catalogue of Isolated Pairs of Galaxies (KPG).
Avila-Reese, Avila-Reese, Baugh, Bergvall, Burstein, Cardelli, Chevalier, de Jong, Doroshenko, Dultzin-Hacyan, Elmegreen, Godwin, H. M. Hernández-Toledo, Han, Haynes, Hernández-Toledo, Holmberg, I. Puerari, Jansen, Johansson, Junqueira, Karachentsev, Kauffmann, Keel, Kennicutt, Knapen, Lacey, Larson, Laurikainen, Mayer, Metcalfe, Moore, Márquez, Márquez, Prugniel, Prugniel, Reduzzi, Reshetnikov, Roberts, Sofue, Stocke, Sulentic, Whitford, Xu, Zaritsky   +44 more
core   +2 more sources

A direct test of density wave theory in a grand-design spiral galaxy

, 2019
The exact nature of the arms of spiral galaxies is still an open question1. It has been widely assumed that spiral arms in galaxies with two distinct symmetrical arms are the products of density waves that propagate around the disk, with the spiral arms being visibly enhanced by the star formation that is triggered as the passing wave compresses gas in
Peterken, Thomas G., Merrifield, Michael R., Drory, Niv, Krawczyk, Coleman M., Masters, Karen L., Weijmans, Anne-Marie, Westfall, Kyle B.   +6 more
openaire   +1 more source

Spiral arm crossings inferred from ridges in Gaia stellar velocity distributions

, 2018
The solar neighborhood contains disc stars that have recently crossed spiral arms in the Galaxy. We propose that boundaries in local velocity distributions separate stars that have recently crossed or been perturbed by a particular arm from those that ...
Anders, Friedrich, Carrillo, Ismael, Chiappini, Cristina, Hilmi, Tariq, Khalatyan, Arman, McMillan, Paul, Minchev, Ivan, Monari, Giacomo, Quillen, Alice C., Steinmetz, Matthias   +9 more
core   +1 more source