Results 91 to 100 of about 24,041 (212)
On the Role of the Environments and Star Formation for Quasar Activity
Frontiers in Astronomy and Space Sciences, 2017 We investigate the host galaxy and environment properties of a sample of 400 low z (<0.5) quasars that were imaged in the SDSS Stripe82. We can detect and study the properties of the host galaxy for more than 75% of the data sample.
Daniela Bettoni +4 more
doaj +1 more source
CatNorth: An Improved Gaia DR3 Quasar Candidate Catalog with Pan-STARRS1 and CatWISE
The Astrophysical Journal Supplement SeriesA complete and pure sample of quasars with accurate redshifts is crucial for quasar studies and cosmology. In this paper, we present CatNorth, an improved Gaia Data Release 3 (Gaia DR3) quasar candidate catalog with more than 1.5 million sources in the 3
Yuming Fu +19 more
doaj +1 more source
The Formation of Stars with Particular Application to Temporary Stars and Quasars [PDF]
, 1969 I. P. Williams
openalex +1 more source
Nature Astronomy, 2018 For consistency with Nature policy, the version posted here is the text as submitted to Nature Astronomy in November 2017. The final version is available at the DOI below, and differs slightly in wording.
openaire +5 more sources
Unambiguous quasar microlensing [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 Revised version; 5 pages, 4 figures, to appear in ...
openaire +3 more sources
Cosmological Significance of the Relation between Red-shift and Flux Density for Quasars [PDF]
, 1966 D. W. Sciama, M. J. Rees
openalex +1 more source
Quasars and Their Host Galaxies [PDF]
, 2006 This review attempts to describe developments in the fields of quasar and quasar host galaxies in the past five. In this time period, the Sloan and 2dF quasar surveys have added several tens of thousands of quasars, with Sloan quasars being found to z>6. Obscured, or partially obscured quasars have begun to be found in significant numbers.
openaire +4 more sources