Results 91 to 100 of about 559,591 (386)

H-alpha kinematics of S4G spiral galaxies-II. Data description and non-circular motions [PDF]

open access: yes, 2015
We present a kinematical study of 29 spiral galaxies included in the Spitzer Survey of Stellar Structure in Galaxies, using Halpha Fabry-Perot data obtained with the Galaxy Halpha Fabry-Perot System instrument at the William Herschel Telescope in La ...
Athanassoula, E.   +17 more
core   +5 more sources

Arm classifications for spiral galaxies

open access: yesThe Astrophysical Journal, 1987
On presente la classification de 762 galaxies.
Debra Meloy Elmegreen   +1 more
openaire   +1 more source

The Orbit of the Companion to HD 100453A: Binary-driven Spiral Arms in a Protoplanetary Disk [PDF]

open access: yes, 2018
HD 100453AB is a 10 ± 2 Myr old binary whose protoplanetary disk was recently revealed to host a global two-armed spiral structure. Given the relatively small projected separation of the binary (1.″05, or ∼108 au), gravitational perturbations by the ...
K. Wagner   +11 more
semanticscholar   +1 more source

Planet-driven Spiral Arms in Protoplanetary Disks. II. Implications [PDF]

open access: yesAstrophysical Journal, 2017
We examine whether various characteristics of planet-driven spiral arms can be used to constrain the masses of unseen planets and their positions within their disks.
J. Bae, Zhaohuan Zhu
semanticscholar   +1 more source

Developing evidence‐based, cost‐effective P4 cancer medicine for driving innovation in prevention, therapeutics, patient care and reducing healthcare inequalities

open access: yesMolecular Oncology, EarlyView.
The cancer problem is increasing globally with projections up to the year 2050 showing unfavourable outcomes in terms of incidence and cancer‐related deaths. The main challenges are prevention, improved therapeutics resulting in increased cure rates and enhanced health‐related quality of life.
Ulrik Ringborg   +43 more
wiley   +1 more source

A Multiwavelength Investigation of Spiral Structures in z > 1 Galaxies with JWST

open access: yesThe Astrophysical Journal Letters
Recent JWST observations have revealed the prevalence of spiral structures at z > 1. Unlike in the local Universe, the origin and the consequence of spirals at this epoch remain unexplored. We use public JWST/NIRCam data from the COSMOS-Web survey to map
Boris S. Kalita   +20 more
doaj   +1 more source

Deep NIR Surveys in the Galactic Plane: A General Overview and the Study of Scutum’s Spiral Arm

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Despite the impressive advances in Galactic structure studies, thanks to the large astronomical surveys, there remain several open questions. Although at low distances, optical surveys can bring us important information, the potential of NIR surveys ...
E. B. Amôres, R. S. Levenhagen
doaj   +1 more source

Spiral and bar driven peculiar velocities in Milky Way sized galaxy simulations [PDF]

open access: yes, 2015
We investigate the kinematic signatures induced by spiral and bar structure in a set of simulations of Milky Way-sized spiral disc galaxies. The set includes test particle simulations that follow a quasi-stationary density wave-like scenario with rigidly
Bovy, Jo   +7 more
core   +3 more sources

Recurrent cancer‐associated ERBB4 mutations are transforming and confer resistance to targeted therapies

open access: yesMolecular Oncology, EarlyView.
We show that the majority of the 18 analyzed recurrent cancer‐associated ERBB4 mutations are transforming. The most potent mutations are activating, co‐operate with other ERBB receptors, and are sensitive to pan‐ERBB inhibitors. Activating ERBB4 mutations also promote therapy resistance in EGFR‐mutant lung cancer.
Veera K. Ojala   +15 more
wiley   +1 more source

Spirality: A Novel Way to Measure Spiral Arm Pitch Angle

open access: yesGalaxies, 2022
We present the MATLAB code Spirality, a novel method for measuring spiral arm pitch angles by fitting galaxy images to spiral templates of known pitch. Computation time is typically on the order of 2 min per galaxy, assuming 8 GB of working memory.
Deanna Shields   +9 more
doaj   +1 more source

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