Results 11 to 20 of about 3,788 (174)
The Pristine Inner Galaxy Survey (PIGS) III: Carbon-enhanced metal-poor stars in the bulge [PDF]
, 2021 The most metal-deficient stars hold important clues about the early build-up and chemical evolution of the Milky Way, and carbon-enhanced metal-poor (CEMP) stars are of special interest. However, little is known about CEMP stars in the Galactic bulge. In
Buder, Sven +26 more
core +4 more sources
IR Imaging of Spiral Galaxy Bulges [PDF]
Symposium - International Astronomical Union, 1993 Imaging in the infrared (2.2μ) minimizes the impact of dust obscuration and allows reliable mapping of the mass-tracing stellar population in spiral galaxies. We find dramatic differences compared to photometry at shorter wavelengths (e.g. 0.8μ). As an example, the observations of the mini-bar and inner spiral arms of M 51 are discussed.
Dennis Zaritsky +2 more
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Photometric scaling relations for bulges of galaxies [PDF]
Astronomy & Astrophysics, 2006 27 pages, 16 figures, accepted in A& ...
Ravikumar, C. D. +4 more
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Untangling galaxy components: full spectral bulge–disc decomposition [PDF]
, 2016 To ascertain whether photometric decompositions of galaxies into bulges and discs are astrophysically meaningful, we have developed a new technique to decompose spectral data cubes into separate bulge and disc components, subject only to the constraint ...
Tabor, Martha +12 more
core +1 more source
Galaxy And Mass Assembly (GAMA): Understanding the wavelength dependence of galaxy structure with bulge-disc decompositions [PDF]
, 2016 With a large sample of bright, low-redshift galaxies with optical$-$near-IR imaging from the GAMA survey we use bulge-disc decompositions to understand the wavelength-dependent behavior of single-S\'ersic structural measurements.
Brown, MJI +16 more
core +2 more sources
Intrinsic Shape of Bulges in Disk Galaxies [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractWe analyzed the 2MASS images of a sample of 148 bright, nearby and unbarred galaxies to derive the photometric parameters of their bulge and disk by applying an accurate 2D decomposition algorithm. As a model for the bulge we have considered a system where the surfaces of equal density of light are coaxial and concentric ellipsoids with ...
MÉNDEZ ABREU J. +3 more
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A connection between bulge properties and the bimodality of galaxies [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractThe global colors and structure of galaxies have recently been shown to follow bimodal distributions. Galaxies separate into a “red sequence”, populated prototypically by early-type galaxies, and a “blue cloud”, whose typical objects are late-type disk galaxies. Intermediate-type (Sa-Sbc) galaxies populate both regions.
Drory, N., Fisher, D.
openaire +5 more sources
An Investigation into the Prominence of Spiral Galaxy Bulges [PDF]
The Astronomical Journal, 2001 From a diameter-limited sample of 86 `face-on' spiral galaxies, the bulge-to-disk size and luminosity ratios, and other quantitative measurements for the prominence of the bulge are derived. The bulge and disk parameters have been estimated using a seeing convolved Sersic r^(1/n) bulge and a seeing convolved exponential disk.
openaire +3 more sources
The Formation of Galaxy Disks and Bulges [PDF]
Symposium - International Astronomical Union, 1999 Using a TREESPH code modified to run on a parallel computer and a new algorithm for modeling star formation, we have investigated the formation of disk galaxies from idealized cosmological perturbations.
P. R. Williams, A. H. Nelson
openaire +1 more source