Results 181 to 190 of about 192,158 (225)

The current limits in the photometry of galaxies.

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Primordial Rotating Disk Composed of ≥15 Star Forming Clumps at Cosmic Dawn

Fujimoto S, Ouchi M, Kohno K, Valentino F, Giménez-Arteaga C, Brammer G, Furtak L, Kohandel M, Oguri M, Pallottini A, Richard J, Zitrin A, Bauer F, Boylan-Kolchin M, Dessauges-Zavadsky M, Egami E, Finkelstein S, Ma Z, Smail I, Watson D, Hutchison T, Rigby J, Welch B, Ao Y, Bradley L, Caminha G, Caputi K, Espada D, Endsley R, Fudamoto Y, González-López J, Hatsukade B, Koekemoer A, Kokorev V, Laporte N, Lee M, Magdis G, Ono Y, Rizzo F, Shibuya T, Shimasaku K, Sun F, Toft S, Umehata H, Wang T, Yajima H.   +45 more
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Handling of ‘Galaxy’ Photometry

1975
The properties of photographic images present certain well-known difficulties if accurate photometry is to be carried out. In order to derive light, curves of variable stars to the limit of long-exposure photographs, means have been specially developed to convert ‘Galaxy’ measures of 607 stars, including 150 photoelectric standards, on a total of 93 ...
P. A. Wayman, M. J. Stift
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The Void Galaxy Survey: Photometry, Structure and Identity of Void Galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
We analyse photometry from deep B-band images of 59 void galaxies in the Void Galaxy Survey (VGS), together with their near-infrared 3.6 μm and 4.5 μm Spitzer photometry.
Kathryn Kreckel, Reynier Peletier, Rien van de Weijgaert   +2 more
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Surface photometry of galaxies

Publications of the Astronomical Society of the Pacific, 1988
Surface photometry of galaxies has undergone a great advance recently with the development of fast digital plate-measuring machines, powerful computers to process the huge amount of data from them, and efficient image-processing software. Further, the recent advent of charge-coupled devices (CCDs) has made the technique effective even with relatively ...
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Photometry of southern galaxies

Publications of the Astronomical Society of the Pacific, 1982
Multiaperture photoelectric V and (B-V) measurements of 74 southern galaxies are presented. The diaphragms of the indicated diameters, the number of nights on which observations were obtained, and the estimated internal accuracy of the data are also indicated. Thirty-five of the galaxies have no prior published photoelectric data, and several should be
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Strömgren Photometry of Galaxies

1984
In preparation for a program of observations of different types of galaxies in distant clusters, we have calculated synthetic colors from the spectrophotometry of radio galaxies published by Yee and Oke (1978). The monochromatic magnitudes were calculated for the Stromgren v, b and y bandpasses shifted into the rest frame of each galaxy.
Karl D. Rakos, Norbert Fiala
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CCD photometry of seyfert galaxies

Astrophysics and Space Science, 1989
Morphology and elliptically averaged luminosity profiles have been derived from CCD surface photometry of thirteen seyfert galaxies. ApparentV andI magnitudes,V-I colour index, as well as absolute Mv and MI magnitudes have been calculatedV andI luminosity profiles of Mk 10, Mk 79, Mk 358, Mk 618, Mk 352, and Mk 110, are adjusted by the usual model ...
E. Mediavilla, M. G. Pastoriza, E. Battaner   +2 more
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Galaxy Photometry in the Virgo Cluster. I.

Astronomische Nachrichten, 1982
AbstractIn a field of about 0.6 square degrees near the centre of the Virgo cluster of galaxies a photometry in B, V, and R has been performed by means of the microphotometer of the Zentralinstitut für Astrophysik. For 84 galaxies identified in this field magnitudes, diameters, and axis ratios has been determined.
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Galaxy photometry and cosmology

1985
A brief review is presented of the current understanding of galaxy photometry as related to cosmology. Attention is paid to the conclusions about spectral evolution of galaxies that can be derived from the deepest faint galaxy samples currently available. Some typical results are discussed.
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