Results 11 to 20 of about 8,619 (182)
Galaxy Zoo:dust in spiral galaxies [PDF]
, 2011 We investigate the effect of dust on spiral galaxies by measuring the inclination dependence of optical colours for 24 276 well-resolved Sloan Digital Sky Survey (SDSS) galaxies visually classified via the Galaxy Zoo project. We find clear trends of reddening with inclination which imply a total extinction from face-on to edge-on of 0.7, 0.6, 0.5 and 0.
Masters, Karen L. +14 more
openaire +5 more sources
SUPERLUMINOUS SPIRAL GALAXIES [PDF]
The Astrophysical Journal, 2016 ABSTRACT We report the discovery of spiral galaxies that are as optically luminous as elliptical brightest cluster galaxies, with r-band monochromatic luminosity L r = 8–14L* (4.3–7.5 × 1044 erg s−1).
Patrick M. Ogle +3 more
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Kinematically lopsided spiral galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 6 pages, accepted for ...
Swaters, RA +3 more
core +7 more sources
Galaxy Zoo: passive red spirals [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 MNRAS in press, 20 pages, 15 figures (v3)
Masters, Karen +16 more
openaire +9 more sources
Annual Review of Astronomy and Astrophysics, 2022 Spirals in galaxies have long been thought to be caused by gravitational instability in the stellar component of the disk, but discerning the precise mechanism had proved elusive. Tidal interactions, and perhaps bars, may provoke some spiral responses, but spirals in many galaxies must be self-excited.
Sellwood, Jerry A., Masters, Karen
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Lopsided spiral galaxies [PDF]
Physics Reports, 2009 The light distribution in the disks of many galaxies is non-axisymmetric or `lopsided' with a spatial extent much larger along one half of a galaxy than the other, as in M101. Recent near-IR observations show that lopsidedness is common. The stellar disks in nearly 30 % of galaxies have significant lopsidedness, greater than 10 % measured as the ...
Jog, Chanda J., Combes, Françoise
openaire +3 more sources
Celestial Mechanics and Dynamical Astronomy, 2011 We study the role of asymptotic curves in supporting the spiral structure of a N-body model simulating a barred spiral galaxy. Chaotic orbits with initial conditions on the unstable asymptotic curves of the main unstable periodic orbits follow the shape of the periodic orbits for an initial interval of time and then they are diffused outwards ...
Contopoulos, George, Harsoula, Mirella
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SDSS-IV MaNGA: the chemical co-evolution of gas and stars in spiral galaxies [PDF]
, 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 +2 more sources
Probing the Low-Mass End of the Black Hole Mass Function via a Study of Faint Local Spiral Galaxies [PDF]
, 2022 We present an analysis of the pitch angle distribution function (PADF) for nearby galaxies and its resulting black hole mass function (BHMF) via the well-known relationship between pitch angle and black hole mass.
Benjamin L. Davis +4 more
core +1 more source
Symposium - International Astronomical Union, 1970 We point out some properties of barred spiral galaxies which are important for the theory of their formation and spiral structure, and describe some theoretical work on the dynamics of these systems.
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