Results 31 to 40 of about 149,799 (312)

Search for quasar pairs with Gaia astrometric data

open access: yesAstronomy & Astrophysics
Quasar pairs, a special subclass of galaxy pairs, are valuable in the investigation of quasar interaction and clustering, the coevolution between the two quasars’ host galaxies, and the growth of supermassive black holes, as well as the formation and ...
Chen Qihang   +7 more
doaj   +3 more sources

CANDELS Multi-wavelength Catalogs: Source Identification and Photometry in the CANDELS Extended Groth Strip [PDF]

open access: yes, 2017
We present a 0.4–8 μm multi-wavelength photometric catalog in the Extended Groth Strip (EGS) field. This catalog is built on the Hubble Space Telescope (HST) WFC3 and ACS data from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey ...
M. Stefanon   +41 more
semanticscholar   +1 more source

Mining gravitational-wave catalogs to understand binary stellar evolution: A new hierarchical Bayesian framework [PDF]

open access: yesPhysical Review D, 2018
Catalogs of stellar-mass compact binary systems detected by ground-based gravitational-wave instruments (such as LIGO and Virgo) will offer insights into the demographics of progenitor systems and the physics guiding stellar evolution.
S. Taylor, D. Gerosa
semanticscholar   +1 more source

20cm VLA radio-continuum study of M31: Images and point source catalogues [PDF]

open access: yesSerbian Astronomical Journal, 2012
We present a series of new high-sensitivity and high-resolution radio-continuum images of M31 at λ=20 cm (ν=1.4 GHz). These new images were produced by merging archived 20 cm radio-continuum observations from the Very Large Array (VLA) telescope.
Galvin T.J.   +5 more
doaj   +1 more source

HFF-DeepSpace Photometric Catalogs of the 12 Hubble Frontier Fields, Clusters, and Parallels: Photometry, Photometric Redshifts, and Stellar Masses [PDF]

open access: yes, 2018
We present Hubble multi-wavelength photometric catalogs, including (up to) 17 filters with the Advanced Camera for Surveys and Wide Field Camera 3 from the ultra-violet to near-infrared for the Hubble Frontier Fields and associated parallels.
H. Shipley   +16 more
semanticscholar   +1 more source

catsHTM: A Tool for Fast Accessing and Cross-matching Large Astronomical Catalogs [PDF]

open access: yesPublications of the Astronomical Society of the Pacific, 2018
Fast access to large catalogs is required for some astronomical applications. Here we introduce the catsHTM tool, consisting of several large catalogs reformatted into HDF5-based file format, which can be downloaded and used locally. To allow fast access,
M. Soumagnac, E. Ofek
semanticscholar   +1 more source

Chandra Observations of the X-Ray Binary Population in the Field of the Dwarf Galaxy IC 10

open access: yesAstronomy
IC 10 is a dwarf galaxy in Cassiopeia, located at a distance of 660 kpc, and hosts a young stellar population, a large number of Wolf–Rayet stars, and a large number of massive stars in general.
Sayantan Bhattacharya   +3 more
doaj   +1 more source

RESULTS OF PROCESSING OF ASTRONEGATIVES WITH COMMERCIAL SCANNER

open access: yesOdessa Astronomical Publications, 2014
Astrometric errors depending on the method of scanning with different spatial resolutions were studied  with commercial scanner such as   Epson Perfection V750 Pro.
Yu. I. Protsyuk   +3 more
doaj   +1 more source

Spitzer Matching Survey of the UltraVISTA Ultra-deep Stripes (SMUVS): Full-mission IRAC Mosaics and Catalogs [PDF]

open access: yesAstrophysical Journal Supplement Series, 2018
This paper describes new deep 3.6 and 4.5 μm imaging of three UltraVISTA near-infrared survey stripes within the COSMOS field. The observations were carried out with Spitzer’s Infrared Array Camera (IRAC) for the Spitzer Matching Survey of the UltraVISTA
M. Ashby   +26 more
semanticscholar   +1 more source

SOFTWARE FOR PROCESSING OF DIGITIZED ASTRONEGATIVES FROM ARCHIVES AND DATABASES OF VIRTUAL OBSERVATORY

open access: yesOdessa Astronomical Publications, 2014
The paper discusses and illustrates the steps of  basic processing  of  digitized image of astro negatives. Software for  obtaining of a  rectangular coordinates and photometric values of objects on photographic plates was created in the environment ...
Yu. I. Protsyuk   +2 more
doaj   +1 more source

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