Subject: quasars / Publisher: The GAVO DC team - STScI NAVO Directory Search Results

ID:: ivo://org.gavo.dc/apo/res/apo/frames
Title:: Apache Point observations of lensed quasars
Short Name:: apo.frames
Date:: 27 Dec 2024 08:31:01
Publisher:: The GAVO DC team
Description:: Observations of the lensed quasar Q2237+0305 performed between 1995 and 1998.

ID:: ivo://edu.gavo.org/hd/splat_redshift
Title:: Compute Redshifts of Quasars Using SPLAT-VO
Date:: 27 Dec 2024 08:31:06
Publisher:: The GAVO DC team
Description:: This tutorial uses SPLAT-VO to search the VO registry for spectra of galaxies and quasars. From the obtained spectra, the Hydrogen Lyman Alpha line will be used to compute redshift and velocity

ID:: ivo://org.gavo.dc/lensunion/q/im
Title:: Lens Image Archive
Short Name:: lenses_web
Date:: 27 Dec 2024 08:31:04
Publisher:: The GAVO DC team
Description:: A collection of images of lensed quasars from various sources. Included are images from Maidanak Observatory (ivo://org.gavo.dc/maidanak/res/rawframes/siap), Apache Point Observatory, from the MiNDSTEp project (ivo://org.gavo.dc/danish/red/q), and from the Liverpool Robotic Telescope (ivo://org.gavo.dc/liverpool/res/rawframes/q).

ID:: ivo://org.gavo.dc/liverpool/res/rawframes/rawframes
Title:: Liverpool Quasar Lens Monitoring
Short Name:: liverpool.rawfra
Date:: 27 Dec 2024 08:31:02
Publisher:: The GAVO DC team
Description:: This collection includes optical monitorings of gravitationally lensed quasars. The frames can be used to make light curves of quasar images and field objects. From quasar light curves, one may measure time delays and flux ratios, analyse variability and chromaticity, etc. These direct analyses/measurements are basic tools for different astrophysical studies, e.g., expansion rate of the Universe, mechanism of intrinsic variability in quasars, accretion disk structure, supermassive black holes, dark halos of galaxies (dust, collapsed dark matter, smoothly distributed dark matter,...)

ID:: ivo://org.gavo.dc/maidanak/res/rawframes/rawframes
Title:: Maidanak Observatory Lens Images
Date:: 22 Jan 2021 08:24:03
Publisher:: The GAVO DC team
Description:: Observations of (mainly) lensed quasars from Maidanak Observatory, Uzbekhistan

ID:: ivo://org.gavo.dc/maidanak/res/rawframes/reduced
Title:: Maidanak Observatory Lens Images
Short Name:: maidanak.reduced
Date:: 27 Dec 2024 08:31:04
Publisher:: The GAVO DC team
Description:: Reduced frames of lensed quasar observations from Maidanak Observatory. See the referenceURL for details on the reduction procedure and calibration data.

ID:: ivo://org.gavo.dc/veronqsos/q/data
Title:: Quasars and Active Galactic Nuclei (8th Ed.)
Short Name:: veronqsos.data
Date:: 27 Dec 2024 08:31:02
Publisher:: The GAVO DC team
Description:: This catalogue (with updates to the pervious version) contains 11358 (+2759) quasars (defined as brighter than absolute B magnitude -23), 3334 (+501) AGNs (defined as fainter than absolute B magnitude -23) and 357 (+137) BL Lac objects from 1863 (+201) references.

ID:: ivo://org.gavo.dc/mlqso/q/q
Title:: Spectra of lensed QSOs (SSAP)
Short Name:: mlqso bidi ssa
Date:: 27 Dec 2024 08:31:12
Publisher:: The GAVO DC team
Description:: An archive of optical and near-infrared spectra of strongly lensed quasars and the lensing galaxies. The spectra are resolved to about a few Ångstroms and are flux-calibrated. The spectra resulted from deblending the lensed images in bidimensional spectra available from the SSAP service for `ivo://org.gavo.dc/mlqso/q/s <http://dc.g-vo.org/mlqso/q/s/info>`_.

Search