Results 31 to 40 of about 265,282 (287)

Surface photometry of low surface brightness galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1995
Low surface brightness (LSB) galaxies are galaxies dominated by an exponential disc whose central surface brightness is much fainter than the value of mu(B)(0) = 21.65 +/- 0.30 mag arcsec(-2) found by Freeman. In this paper we present broadband photometry of a sample of 21 late-type LSB galaxies.
de Blok, WJG   +2 more
openaire   +2 more sources

Multilayer Brightness Temperature Tracing Method for Rough Surface Scene Simulation in Passive Millimeter-Wave Imaging

open access: yesInternational Journal of Antennas and Propagation, 2016
Simulation in passive millimeter-wave (MMW) imaging of rough surfaces is an indispensable step in the simulation in passive radiation imaging, especially for the rough surfaces of different roughness surfaces.
Chuan Yin, Ming Zhang, Yaming Bo
doaj   +1 more source

Towards an Understanding of the Mid-Infrared Surface Brightness of Normal Galaxies [PDF]

open access: yes, 1999
We report a mid-infrared color and surface brightness analysis of IC 10, NGC 1313, and NGC 6946, three of the nearby galaxies studied under the Infrared Space Observatory Key Project on Normal Galaxies.
Abergel A.   +29 more
core   +3 more sources

The Faint End of the Luminosity Function and Low Surface Brightness Galaxies [PDF]

open access: yes, 2012
SHELS (Smithsonian Hectospec Lensing Survey) is a dense redshift survey covering a 4 square degree region to a limiting R = 20.6. In the construction of the galaxy catalog and in the acquisition of spectroscopic targets, we paid careful attention to the ...
Andreon   +30 more
core   +2 more sources

TESS as a Low-surface-brightness Observatory [PDF]

open access: yesResearch Notes of the AAS, 2018
The low surface brightness Universe holds clues to the first formation of galaxies. Specifically, the shape and morphology of local stellar haloes have encoded in them the early formation history of their parent galaxies. Early progenitor galaxies were absorbed by the dark halo and scattered their stars in a diffuse halo around the main galaxy.
openaire   +2 more sources

BVR CCD Photometric observation analysis of spiral galaxy Ic 467

open access: yesIraqi Journal of Physics, 2019
The structure and composition of the stellar population in the surface brightness galaxy Ic 467 is studied using BVR CCD photometry. The observations were obtained on the 1.88m optical telescope of Kottamia Astronomical Observatory, KAO, Egypt.
Sinan H. Ali
doaj   +1 more source

Systematically Measuring Ultradiffuse Galaxies (SMUDGes). IV. Ultradiffuse Satellites of Milky Way Analogs

open access: yesThe Astronomical Journal, 2023
To better understand the formation of large, low-surface-brightness galaxies, we measure the correlation function between ultradiffuse galaxy (UDG) candidates and Milky Way analogs (MWAs).
Hina Goto   +4 more
doaj   +1 more source

Are Low Surface Brightness Disks Young?

open access: yesThe Astrophysical Journal, 1997
We reconsider the problem of the age of the stellar discs of late-type Low Surface Brightness (LSB) galaxies by making use of a new IMF recently derived from numerical fluid dynamical simulations (Padoan, Nordlund and Jones, 1997). While a Miller-Scalo IMF cannot adequately describe the photometric properties of LSBs, when we apply the new Padoan et al.
Padoan, Paolo   +2 more
openaire   +2 more sources

From Spirals to Low Surface Brightness Galaxies [PDF]

open access: yesAstrophysics and Space Science, 2003
We show that simple models of the chemical and spectrophotometric evolution of galaxies can be used to explore the properties of present-day galaxies and especially the causes of the observed variety among disc galaxies. We focus on the link between ``classical'' spirals and Low Surface Brightness galaxies.
Boissier, Samuel   +4 more
openaire   +3 more sources

Soil Hydraulic Parameters and Surface Soil Moisture of a Tilled Bare Soil Plot Inversely Derived from L‐Band Brightness Temperatures

open access: yesVadose Zone Journal, 2014
We coupled a radiative transfer model and a soil hydrologic model (HYDRUS 1D) with an optimization routine to derive soil hydraulic parameters, surface roughness, and soil moisture of a tilled bare soil plot using measured brightness temperatures at 1.4 ...
M. Dimitrov   +9 more
doaj   +1 more source

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