Results 11 to 20 of about 2,809 (189)

Solution to the Conflict between the Estimations of Resolved and Unresolved Galaxy Stellar Mass from the Perspective of JWST

open access: yesThe Astrophysical Journal, 2023
By utilizing the spatially resolved photometry of galaxies at 0.2 < z < 3.0 in the CEERS field, we estimate the resolved and unresolved stellar mass via fitting of the spectral energy distribution (SED) to study the discrepancy between them.
Jie Song   +4 more
doaj   +1 more source

Infrared Photometry of Titan

open access: yesThe Astrophysical Journal, 1974
A set of observations of Titan at wavelengths from 1.6 through 34 microns shows that Titan has a remarkably low albedo near 1.6 micron. Thermal flux observations for 10 years at 10.6 microns and for 5 years at 21 microns suggest that the thermal properties of Titan remained constant over this period and are independent of phase.
F. J. Low, G. H. Rieke
openaire   +1 more source

A Multiwavelength Classification and Study of Red Supergiant Candidates in NGC 6946

open access: yesThe Astrophysical Journal, 2023
We have combined resolved stellar photometry from Hubble Space Telescope (HST), Spitzer, and Gaia to identify red supergiant (RSG) candidates in NGC 6946, based on their colors, proper motions, visual morphologies, and spectral energy distributions.
Jared R. Johnson   +5 more
doaj   +1 more source

New Near-infrared Period–Luminosity–Metallicity Relations for Galactic RR Lyrae Stars Based on Gaia EDR3 Parallaxes

open access: yesThe Astrophysical Journal, 2023
We present new period–luminosity and period–luminosity–metallicity relations for Galactic RR Lyrae stars based on a sample of 28 pulsators located at distances of up to 1.5 kpc from the Sun.
Bartłomiej Zgirski   +15 more
doaj   +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

Near-Infrared Photometry of Blazars

open access: yes, 1999
Two days of observations were conducted at the Palomar Observatory during the nights of 25 and 26 February 1997 with the Hale telescope, in order to search for rapid variability in the near-infrared (NIR) bands J, H, Ks for a selection of eight blazars.
Chapuis, C.   +4 more
openaire   +3 more sources

INFRARED PHOTOMETRY OF SAKURAI'S OBJECT (V4334 Sgr) IN 1996-2000

open access: yesOdessa Astronomical Publications, 2017
The results of the photometric observations of V4334 Sgr and characteristics of its evolution after outburst are presented.
A. M. Tatarnikov   +4 more
doaj   +1 more source

Redder than Red: Discovery of an Exceptionally Red L/T Transition Dwarf

open access: yesThe Astrophysical Journal Letters, 2023
We present the discovery of CWISE J050626.96+073842.4 (CWISE J0506+0738), an L/T transition dwarf with extremely red near-infrared colors discovered through the Backyard Worlds: Planet 9 citizen science project. Photometry from UKIRT and CatWISE give a (
Adam C. Schneider   +26 more
doaj   +1 more source

PHOTOMETRIC OBSERVATIONS OF THE R AQUARII SYSTEM

open access: yesOdessa Astronomical Publications, 2017
Photometric BVRIJHK observations of the symbiotic star R Aqr are presented. The data were obtained at Byurakan Station of the St.Petersburg University Astronomical Observatory during the interval 1971- 1991, using AFM-6 photometer (C-8 type photocatode ...
T. N. Khudyakova
doaj   +1 more source

Near-infrared photometry of WISE J085510.74–071442.5 [PDF]

open access: yesAstronomy & Astrophysics, 2016
(Abridged) We aim at measuring the near-infrared photometry, and deriving the mass, age, temperature, and surface gravity of WISE J085510.74-071442.5 (J0855-0714), which is the coolest known object beyond the Solar System as of today. We use publicly available data from the archives of the HST and the VLT to determine the emission of this source at 1 ...
Osorio, MRZ   +9 more
openaire   +3 more sources

Home - About - Disclaimer - Privacy