Results 21 to 30 of about 1,014 (183)
The level of photometry is the basic level of the Hungarian galaxy [PDF]
مجلة التربية والعلم, 2007 The photometric and fundamental plane for a sample of early type galaxies(elliptical and lenticular galaxies) which belongs to Virgo cluster have been calculated by fitting the Sersic model ( r1/n-model) to the surface brightness profiles along the major
Mohsen Ali, Saad Younis
doaj +1 more source
Photometry of Polar-Ring Galaxies
, 2007 To appear in RMxAA. 14 pages.
Arturo Godínez-Martínez +3 more
openaire +3 more sources
Comparing Globular Cluster System Properties with Host Galaxy Environment
The 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
A Southern Photometric Quasar Catalog from the Dark Energy Survey Data Release 2
The 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
Photometry of Compact Galaxies
The 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
A New Wide-field Infrared Survey Explorer Calibration of Stellar Mass
The 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
Searching for Dwarf Hα Emission-line Galaxies within Voids. I. Survey Methods and First Observations
The 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
The 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
Revisiting Variable Stars Toward the Globular Cluster NGC 6496 With ATLAS and Gaia Photometry
Astronomische Nachrichten, Volume 347, Issue 7, August 2026.ABSTRACT We revisit 13 variable stars in the field of the metal‐rich globular cluster NGC 6496, discovered by Abbas et al. (2015; Astronomical Journal 149:40) (hereafter referred to as “MA15”) via time‐series data, spanning 2 years. We improve upon the MA15 characterization of the variables using ATLAS time‐series photometry data, spanning 8 years, in ...
Madison E. Martin +2 more
wiley +1 more source
The THESEUS Space Mission and the Infrared Telescope Calibration Unit
Astronomische Nachrichten, Volume 347, Issue 6, July 2026.ABSTRACT The Transient High‐Energy Sky and Early Universe Surveyor (THESEUS) is an ESA M7 mission concept currently in Phase A, designed to exploit gamma‐ray bursts to probe the early Universe while advancing multi‐messenger and time‐domain astrophysics. To achieve its ambitious goals, THESEUS will combine wide‐band x‐ray and gamma‐ray monitors with an
András Péter Joó +9 more
wiley +1 more source