Table · dataset · 1999
Gravitationally Lensed Quasars
Listed in IVOA Registry (Virtual Observatory)
The Snapshot Survey was a search for cases of gravitational lensing among intrinsically-luminous, high-redshift quasars using the Hubble Space Telescope (HST) Planetary Camera (PC).
Description
The accompanying ASCII tables summarize the results of the survey. Introduction: The Snapshot Survey was a search for cases of gravitational lensing among intrinsically-luminous, high-redshift quasars using the Hubble Space Telescope (HST) Planetary Camera (PC).
Bahcall et al. (1992a; hereafter Paper I) described the objectives of the survey, its mode of operation, the sample definition, and the initial results of a small sample. Maoz et al. (1992b, 1993a, 1993b hereafter Papers II, III, and IV) reported results from a progressively larger sample and compared the observed lensing frequency to existing theoretical models. The discovery of a possible sub-arcsecond lens system, the z=3.8 quasar 1208+1011, reported by Maoz et al. (1992a) and Magain et al. (1992), was followed by HST multi-color imaging and spectroscopy as described in Bahcall et al. (1992b) and in Bahcall et al. (1992c), respectively.
Read the rest (3 more)
Star counts based on the Snapshot Survey images are described in Gould, Bahcall, and Maoz (1993). For all objects in the Survey, finding charts and astrometric positions appear in Schneider et al. (1992). The accompanying tables, published in Paper IV, summarize the results of the Snapshot Survey for gravitationally lensed quasars.
Table1a.dat combines the results from Papers II, III, and IV into one list ordered by R.A. These tables have more accurately measured quasar magnitudes, and minor corrections have been made in some of the entries listed in the tables in previous papers, so that the present list superseded previous data summaries. Table1b.dat lists the Paper I observations in the same format as table1a.dat. Some of the exposures are only 120s (program 3034) and about half of the initial exposures were through the F785LP filter (similar to I), rather than the F555W filter.
We have included in table1b.dat only quasars that were not subsequently re-observed. These files can be merged without repetition. Exposures through the F785LP filter are marked with an "I" in the V_obs column.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/409/28 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 1993ApJ...409...28M ui.adsabs.harvard.edu/abs/1993ApJ...409...28M ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/apj/409/28 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/apj/409/28 | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · IVOA Registry | keyword-concept-rules@1.0.0 | title+description (65%) |
| concepts[modality].local:modality:imaging | enrichment · IVOA Registry | keyword-concept-rules@1.0.0 | title+description (75%) |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |