Matches in SemOpenAlex for { <https://semopenalex.org/work/W42879181> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W42879181 endingPage "412" @default.
- W42879181 startingPage "412" @default.
- W42879181 abstract "We report some results of a new analysis (Trèvese et al. 1993, ApJ (submitted) (T93)) of the variability of the faint QSO sample of SA57 (Koo, Kron and Cudworth, 1986, PASP, 98, 285), concerning the intrinsic time scales of variability and the dependence of the amplitude of variability on absolute magnitude and redshift. Prime focus plates of SA57 have been obtained with the Mayall 4-m telescope at the Kitt Peak National Observatory since 1974. The present analysis is based on 14 B J plates spanning 15 years at 11 independent epochs. The digitization, object selection, image classification and photometry are described in Koo (1986, ApJ, 311 , 651) and Trèvese et al. (1989, AJ, 98 , 108 (T89)). The magnitude limit of the sample is B J = 22.5 and stellar objects are selected with a threshold in image size. This criteria give a sample of 694 objects in the field, 34 of which are QSOs whose spectra have been measured with the Mayall 4-m telescope. The r.m.s. error in the B J band is 0.05 mag at B J Ã 22 mag. All but one of these QSOs appear to be variable according to T93." @default.
- W42879181 created "2016-06-24" @default.
- W42879181 creator A5014472013 @default.
- W42879181 creator A5029778583 @default.
- W42879181 date "1994-01-01" @default.
- W42879181 modified "2023-09-25" @default.
- W42879181 title "Optical Variability of Faint QSOs and AGNs" @default.
- W42879181 cites W2033220168 @default.
- W42879181 doi "https://doi.org/10.1017/s0074180900176004" @default.
- W42879181 hasPublicationYear "1994" @default.
- W42879181 type Work @default.
- W42879181 sameAs 42879181 @default.
- W42879181 citedByCount "0" @default.
- W42879181 crossrefType "journal-article" @default.
- W42879181 hasAuthorship W42879181A5014472013 @default.
- W42879181 hasAuthorship W42879181A5029778583 @default.
- W42879181 hasBestOaLocation W428791811 @default.
- W42879181 hasConcept C100752510 @default.
- W42879181 hasConcept C111717503 @default.
- W42879181 hasConcept C120665830 @default.
- W42879181 hasConcept C121332964 @default.
- W42879181 hasConcept C126691448 @default.
- W42879181 hasConcept C1276947 @default.
- W42879181 hasConcept C150846664 @default.
- W42879181 hasConcept C180205008 @default.
- W42879181 hasConcept C2776968204 @default.
- W42879181 hasConcept C2779919027 @default.
- W42879181 hasConcept C2780848835 @default.
- W42879181 hasConcept C33024259 @default.
- W42879181 hasConcept C44870925 @default.
- W42879181 hasConcept C4839761 @default.
- W42879181 hasConcept C50693072 @default.
- W42879181 hasConcept C68271606 @default.
- W42879181 hasConcept C7910260 @default.
- W42879181 hasConcept C98444146 @default.
- W42879181 hasConceptScore W42879181C100752510 @default.
- W42879181 hasConceptScore W42879181C111717503 @default.
- W42879181 hasConceptScore W42879181C120665830 @default.
- W42879181 hasConceptScore W42879181C121332964 @default.
- W42879181 hasConceptScore W42879181C126691448 @default.
- W42879181 hasConceptScore W42879181C1276947 @default.
- W42879181 hasConceptScore W42879181C150846664 @default.
- W42879181 hasConceptScore W42879181C180205008 @default.
- W42879181 hasConceptScore W42879181C2776968204 @default.
- W42879181 hasConceptScore W42879181C2779919027 @default.
- W42879181 hasConceptScore W42879181C2780848835 @default.
- W42879181 hasConceptScore W42879181C33024259 @default.
- W42879181 hasConceptScore W42879181C44870925 @default.
- W42879181 hasConceptScore W42879181C4839761 @default.
- W42879181 hasConceptScore W42879181C50693072 @default.
- W42879181 hasConceptScore W42879181C68271606 @default.
- W42879181 hasConceptScore W42879181C7910260 @default.
- W42879181 hasConceptScore W42879181C98444146 @default.
- W42879181 hasLocation W428791811 @default.
- W42879181 hasOpenAccess W42879181 @default.
- W42879181 hasPrimaryLocation W428791811 @default.
- W42879181 hasRelatedWork W2001628227 @default.
- W42879181 hasRelatedWork W2063294917 @default.
- W42879181 hasRelatedWork W2081255483 @default.
- W42879181 hasRelatedWork W2096460267 @default.
- W42879181 hasRelatedWork W2099551201 @default.
- W42879181 hasRelatedWork W2172172874 @default.
- W42879181 hasRelatedWork W2949813490 @default.
- W42879181 hasRelatedWork W3097287834 @default.
- W42879181 hasRelatedWork W3105820126 @default.
- W42879181 hasRelatedWork W4206820831 @default.
- W42879181 hasVolume "159" @default.
- W42879181 isParatext "false" @default.
- W42879181 isRetracted "false" @default.
- W42879181 magId "42879181" @default.
- W42879181 workType "article" @default.