Results 21 to 30 of about 6,945 (227)

Multicolour photometry of the andromeda galaxy star clusters. [PDF]

open access: yes, 2021
In this study we present new PHAT survey star cluster photometry catalogue of the Andromeda galaxy. For each cluster we measured: centre coordinates, colour and total apertures, background levels and magnitudes for 6 photometric passbands. Using Naujalis
Kriščiūnas, Eimantas,
core  

Study photometric properties of spiral galaxy NGC 4448 using CCD camera with multiband filters

open access: yesIraqi Journal of Physics, 2018
The goal of our study is to perform detailed multiband surface photometry of the spiral galaxy NGC 4448 and its brightest star-forming regions. The structure and composition of the stellar population in the surface brightness galaxy NGC 4448 was studied
Sinan H. Ali
doaj   +1 more source

Comparing Globular Cluster System Properties with Host Galaxy Environment

open access: yesThe Astrophysical Journal, 2023
We present Hubble Space Telescope photometry in the optical (F475X) and near-infrared (F110W) bands of the globular cluster (GC) systems of the inner halos of a sample of 15 massive elliptical galaxies.
Kate Hartman   +4 more
doaj   +1 more source

Galaxy and mass assembly (GAMA) : end of survey report and data release 2 [PDF]

open access: yes, 2015
The Galaxy And Mass Assembly (GAMA) survey is one of the largest contemporary spectroscopic surveys of low redshift galaxies. Covering an area of ~286 deg2 (split among five survey regions) down to a limiting magnitude of r
Loveday, J   +284 more
core   +1 more source

A Southern Photometric Quasar Catalog from the Dark Energy Survey Data Release 2

open access: yesThe Astrophysical Journal Supplement Series, 2022
We present a catalog of 1.4 million photometrically selected quasar candidates in the southern hemisphere over the ∼5000 deg ^2 Dark Energy Survey (DES) wide survey area. We combine optical photometry from the DES second data release (DR2) with available
Qian Yang, Yue Shen
doaj   +1 more source

A New Wide-field Infrared Survey Explorer Calibration of Stellar Mass

open access: yesThe Astrophysical Journal, 2023
We derive new empirical scaling relations between Wide-field Infrared Survey Explorer (WISE) mid-IR (MIR) galaxy photometry and well-determined stellar masses from spectral energy distribution modeling of a suite of optical–infrared photometry provided ...
T. H. Jarrett   +5 more
doaj   +1 more source

Photometry of Polar-Ring Galaxies

open access: yes, 2007
To appear in RMxAA. 14 pages.
Arturo Godínez-Martínez   +3 more
openaire   +3 more sources

Photometry of Compact Galaxies

open access: yesThe Astrophysical Journal, 1972
Photometric histories of the N galaxies 3C 390.3 and PKS 0521-36. Four other compact galaxies, Markarian 9, I Zw 92, 2 Zw 136, and III Zw 77 showed no evidence of variability. The photometric histories were obtained from an exhaustive study of those plates of the Harvard collection taken with large aperture cameras. The images of all galaxies reported
B. S. P. Shen   +2 more
openaire   +1 more source

Searching for Dwarf Hα Emission-line Galaxies within Voids. I. Survey Methods and First Observations

open access: yesThe Astrophysical Journal, 2023
The population density of dwarf galaxies in low-density voids is likely determined by the dark matter halo mass function and how galaxy formation proceeds in smaller halos.
Christian D. Draper   +5 more
doaj   +1 more source

Spatially Resolved Recent Star Formation History in NGC 6946

open access: yesThe Astrophysical Journal, 2023
The nearby face-on star-forming spiral galaxy NGC 6946 is known as the Fireworks Galaxy due to its hosting an unusually large number of supernovae. We analyze its resolved near-ultraviolet stellar photometry measured from images taken with the Hubble ...
Debby Tran   +8 more
doaj   +1 more source

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