Results 21 to 30 of about 106,851 (294)
Mapping the Milky Way Disk with Gaia DR3: 3D Extended Kinematic Maps and Rotation Curve to ≈30 kpc [PDF]
Astrophysical Journal, 2022 We apply a statistical deconvolution of the parallax errors based on Lucy’s inversion method (LIM) to the Gaia DR3 sources to measure their 3D velocity components in the range of Galactocentric distances R between 8 and 30 kpc with their corresponding ...
Haifeng Wang +3 more
semanticscholar +1 more source
Rotation Curve of the Galaxy [PDF]
Publications of the Astronomical Society of Japan, 1997 Reanalyzing the galactic HI survey data with two methods which make use of the geometry of the galactic disk, we explore the outer rotation curve. In addition to the derivation of the outer rotation curve, we investigate their uncertainties, which have not been established previously.
M. Honma, Y. Sofue
semanticscholar +2 more sources
Galaxy Rotation Curve Fitting Using Machine Learning Tools
Universe, 2023 Galaxy rotation curve (RC) fitting is an important technique which allows the placement of constraints on different kinds of dark matter (DM) halo models. In the case of non-phenomenological DM profiles with no analytic expressions, the art of finding RC
Carlos R. Argüelles, Santiago Collazo
doaj +1 more source
Universe, 2022 The rotational velocity curve, which is the circular velocity profile of the stars and gas in a spiral galaxy as a function of their distance from the galactic center, plays an important role in the kinematic and dynamic investigation of spiral galaxies.
Miroslava Vukcevic
doaj +1 more source
Galaxy rotation curve from classical Cepheids [PDF]
Astronomical Notes - Astronomische Nachrichten, 2018 The Galaxy rotation curve is usually assumed to be flat. However, some galaxies have rotation curves that are lower than the flat rotation curve. In our Galaxy the Keplerian rotation of interstellar clouds in the galactic longitude l=135 was observed ...
P. Gnaci'nski
semanticscholar +1 more source
Rotation Curves of Spiral Galaxies [PDF]
Annual Review of Astronomy and Astrophysics, 2001 ▪ Abstract Rotation curves of spiral galaxies are the major tool for determining the distribution of mass in spiral galaxies. They provide fundamental information for understanding the dynamics, evolution, and formation of spiral galaxies. We describe various methods to derive rotation curves and review the results obtained.
Yoshiaki Sofue, Vera Rubin
openalex +4 more sources
Deep Learning for Detecting Dental Plaque and Gingivitis From Oral Photographs: A Systematic Review. [PDF]
Community Dent Oral EpidemiolABSTRACT Objectives This systematic review aimed to evaluate the performance of deep learning (DL) models in detecting dental plaque and gingivitis from red, green, and blue (RGB) intraoral photographs. Methods A comprehensive literature search was conducted across Medline, Scopus, Embase, and Web of Science databases up to January 31, 2025.
Moharrami M +7 more
europepmc +2 more sources
Evidence of a Flat Outer Rotation Curve in a Star-bursting Disk Galaxy at z = 1.6 [PDF]
Astrophysical Journal, 2018 Observations of the baryon to dark matter fraction in galaxies through cosmic time are a fundamental test for galaxy formation models. Recent observational studies have suggested that some disk galaxies at z > 1 host declining rotation curves, in ...
P. Drew +6 more
semanticscholar +1 more source
Galactic rotation dynamics in a new $$f({\mathcal {R}})$$ f ( R ) gravity model
European Physical Journal C: Particles and Fields, 2023 We propose to test the viability of the recently introduced $$f(\mathcal {R})$$ f ( R ) gravity model in the galactic scales. For this purpose we consider test particles moving in stable circular orbits around the galactic center.
Nashiba Parbin, Umananda Dev Goswami
doaj +1 more source
NIHAO - XIV. Reproducing the observed diversity of dwarf galaxy rotation curve shapes in ΛCDM [PDF]
, 2017 The significant diversity of rotation curve (RC) shapes in dwarf galaxies has recently emerged as a challenge to LCDM: in dark matter (DM) only simulations, DM halos have a universal cuspy density profile that results in self-similar RC shapes.
I. Santos-Santos +5 more
semanticscholar +1 more source