Updating the (Supermassive Black Hole Mass) - (Spiral Arm Pitch Angle) Relation: A Strong Correlation for Galaxies with Pseudobulges [PDF]
, 2017 We have conducted an image analysis of the (current) full sample of 44 spiral galaxies with directly measured supermassive black hole (SMBH) masses, $M_{\rm BH}$, to determine each galaxy's logarithmic spiral arm pitch angle, $\phi$. For predicting black
Benjamin Lee Davis, A. Graham, M. Seigar
semanticscholar +1 more source
Galaxy Zoo DECaLS: Detailed Visual Morphology Measurements from Volunteers and Deep Learning for 314, 000 Galaxies [PDF]
arXiv.org, 2021 We present Galaxy Zoo DECaLS: detailed visual morphological classifications for Dark Energy Camera Legacy Survey images of galaxies within the SDSS DR8 footprint. Deeper DECaLS images (r=23.6 vs. r=22.2 from SDSS) reveal spiral arms, weak bars, and tidal
Mike Walmsley +15 more
semanticscholar +1 more source
MEGAMASER DISKS REVEAL A BROAD DISTRIBUTION OF BLACK HOLE MASS IN SPIRAL GALAXIES [PDF]
, 2016 We use new precision measurements of black hole (BH) masses from water megamaser disks to investigate scaling relations between macroscopic galaxy properties and supermassive BH mass.
J. Greene +10 more
semanticscholar +1 more source
ON THE FRACTION OF BARRED SPIRAL GALAXIES [PDF]
The Astrophysical Journal, 2010 We investigate the stellar masses of strongly barred spiral galaxies. Our analysis is based on a sample of ~14000 visually-classified nearby galaxies given in Nair & Abraham 2010(a). The fraction of barred spiral galaxies is found to be a strong function of stellar mass and star formation history, with a minimum near the characteristic mass at ...
Nair, Preethi B., Abraham, Roberto G.
openaire +2 more sources
The Astrophysical Journal Letters, 2022 Mergers are thought to be a fundamental channel for galaxy growth, perturbing the gas dynamics and the magnetic fields ( B -fields) in the interstellar medium (ISM).
Enrique Lopez-Rodriguez +10 more
doaj +1 more source
A Comparison of the Simulations and Observations for a Nearby Spiral Arm
Frontiers in Astronomy and Space Sciences, 2021 The analysis is focused on the ability of galactic open clusters to trace the spiral arms, based on the recent data releases from Gaia. For this, a simple 1D description of the motion of spiral arms and clusters is introduced.
Martin Piecka, Ernst Paunzen
doaj +1 more source
DGSAT: Dwarf Galaxy Survey with Amateur Telescopes I. Discovery of low surface brightness systems around nearby spiral galaxies [PDF]
, 2015 Context: We introduce the Dwarf Galaxy Survey with Amateur Telescopes (DGSAT) project and report the discovery of eleven low surface brightness (LSB) galaxies in the fields of the nearby galaxies NGC 2683, NGC 3628, NGC 4594 (M104), NGC 4631, NGC 5457 ...
B. Javanmardi +11 more
semanticscholar +1 more source
SDSS-IV MaNGA: the chemical co-evolution of gas and stars in spiral galaxies
, 2022 We investigate archaeologically how the metallicity in both stellar and gaseous components of spiral galaxies of differing masses evolve with time, using data from the SDSS-IV MaNGA survey.
Richard R Lane +19 more
core +1 more source
The Global Schmidt law in star forming galaxies [PDF]
, 1997 Measurements of Hα, H I, and CO distributions in 61 normal spiral galaxies are combined with published far-infrared and CO observations of 36 infrared-selected starburst galaxies, in order to study the form of the global star formation law over the full ...
J. Kennicutt, J. Kennicutt
semanticscholar +1 more source
Accretion, radial flows and abundance gradients in spiral galaxies [PDF]
, 2015 The metal-poor gas continuously accreting on to the discs of spiral galaxies is unlikely to arrive from the intergalactic medium (IGM) with exactly the same rotation velocity as the galaxy itself and even a small angular momentum mismatch inevitably ...
G. Pezzulli, F. Fraternali
semanticscholar +1 more source