FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2951882102> ?p ?o ?g. }

• W2951882102 abstract "We present a study of quasar selection using the DES supernova fields. We used a quasar catalog from an overlapping portion of the SDSS Stripe 82 region to quantify the completeness and efficiency of selection methods involving color, probabilistic modeling, variability, and combinations of color/probabilistic modeling with variability. We only considered objects that appear as point sources in the DES images. We examine color selection methods based on the WISE mid-IR W1-W2 color, a mixture of WISE and DES colors (g-i and i-W1) and a mixture of VHS and DES colors (g-i and i-K). For probabilistic quasar selection, we used XDQSOz, an algorithm that employs an empirical multi-wavelength flux model of quasars to assign quasar probabilities. Our variability selection uses the multi-band chi2-probability that sources are constant in the DES Year 1 griz-band light curves. The completeness and efficiency are calculated relative to an underlying sample of point sources that are detected in the required selection bands and pass our data quality and photometric error cuts. We conduct our analyses at two magnitude limits, i 85% for both i-band magnitude limits and efficiencies of >80% to the bright limit and >60% to the faint limit; however, the giW1 and giW1+variability methods give the highest quasar surface densities. The XDQSOz method and combinations of W1W2/giW1/XDQSOz with variability are among the better selection methods when both high completeness and high efficiency are desired. We also present the OzDES Quasar Catalog of 1,263 spectroscopically-confirmed quasars taken by the OzDES survey. The catalog includes quasars with redshifts up to z~4 and brighter than i=22 mag, although the catalog is not complete up this magnitude limit." @default.
• W2951882102 created "2019-06-27" @default.
• W2951882102 creator A5000866046 @default.
• W2951882102 creator A5004045084 @default.
• W2951882102 creator A5007451083 @default.
• W2951882102 creator A5007857570 @default.
• W2951882102 creator A5009130912 @default.
• W2951882102 creator A5010477669 @default.
• W2951882102 creator A5010551501 @default.
• W2951882102 creator A5011435480 @default.
• W2951882102 creator A5011635269 @default.
• W2951882102 creator A5013268397 @default.
• W2951882102 creator A5014143017 @default.
• W2951882102 creator A5016099926 @default.
• W2951882102 creator A5016226901 @default.
• W2951882102 creator A5016636440 @default.
• W2951882102 creator A5017656891 @default.
• W2951882102 creator A5018183531 @default.
• W2951882102 creator A5021421082 @default.
• W2951882102 creator A5022353207 @default.
• W2951882102 creator A5022678391 @default.
• W2951882102 creator A5023210062 @default.
• W2951882102 creator A5025407755 @default.
• W2951882102 creator A5025505051 @default.
• W2951882102 creator A5025922198 @default.
• W2951882102 creator A5027106220 @default.
• W2951882102 creator A5030809044 @default.
• W2951882102 creator A5032358970 @default.
• W2951882102 creator A5033162064 @default.
• W2951882102 creator A5034796214 @default.
• W2951882102 creator A5036614505 @default.
• W2951882102 creator A5037104426 @default.
• W2951882102 creator A5040317512 @default.
• W2951882102 creator A5041386947 @default.
• W2951882102 creator A5044573007 @default.
• W2951882102 creator A5048958377 @default.
• W2951882102 creator A5049268486 @default.
• W2951882102 creator A5050354843 @default.
• W2951882102 creator A5050480182 @default.
• W2951882102 creator A5050773358 @default.
• W2951882102 creator A5051802606 @default.
• W2951882102 creator A5051897368 @default.
• W2951882102 creator A5052494250 @default.
• W2951882102 creator A5052602782 @default.
• W2951882102 creator A5054515572 @default.
• W2951882102 creator A5054838495 @default.
• W2951882102 creator A5055061716 @default.
• W2951882102 creator A5055859040 @default.
• W2951882102 creator A5059408574 @default.
• W2951882102 creator A5062801348 @default.
• W2951882102 creator A5062821114 @default.
• W2951882102 creator A5063161579 @default.
• W2951882102 creator A5064011536 @default.
• W2951882102 creator A5064135000 @default.
• W2951882102 creator A5064795963 @default.
• W2951882102 creator A5066584997 @default.
• W2951882102 creator A5066753956 @default.
• W2951882102 creator A5068804066 @default.
• W2951882102 creator A5070169576 @default.
• W2951882102 creator A5071581165 @default.
• W2951882102 creator A5072582506 @default.
• W2951882102 creator A5072907522 @default.
• W2951882102 creator A5073384079 @default.
• W2951882102 creator A5073467503 @default.
• W2951882102 creator A5078283093 @default.
• W2951882102 creator A5078454060 @default.
• W2951882102 creator A5079346398 @default.
• W2951882102 creator A5080812976 @default.
• W2951882102 creator A5081376528 @default.
• W2951882102 creator A5081645562 @default.
• W2951882102 creator A5083550136 @default.
• W2951882102 creator A5084795350 @default.
• W2951882102 creator A5086456351 @default.
• W2951882102 creator A5087880844 @default.
• W2951882102 creator A5088831598 @default.
• W2951882102 creator A5088901241 @default.
• W2951882102 creator A5090668359 @default.
• W2951882102 creator A5090705057 @default.
• W2951882102 creator A5090955695 @default.
• W2951882102 date "2017-03-01" @default.
• W2951882102 modified "2023-10-18" @default.
• W2951882102 title "A Study of Quasar Selection in the Dark Energy Survey Supernova fields" @default.
• W2951882102 hasPublicationYear "2017" @default.
• W2951882102 type Work @default.
• W2951882102 sameAs 2951882102 @default.
• W2951882102 citedByCount "0" @default.
• W2951882102 crossrefType "journal-article" @default.
• W2951882102 hasAuthorship W2951882102A5000866046 @default.
• W2951882102 hasAuthorship W2951882102A5004045084 @default.
• W2951882102 hasAuthorship W2951882102A5007451083 @default.
• W2951882102 hasAuthorship W2951882102A5007857570 @default.
• W2951882102 hasAuthorship W2951882102A5009130912 @default.
• W2951882102 hasAuthorship W2951882102A5010477669 @default.
• W2951882102 hasAuthorship W2951882102A5010551501 @default.
• W2951882102 hasAuthorship W2951882102A5011435480 @default.
• W2951882102 hasAuthorship W2951882102A5011635269 @default.
• W2951882102 hasAuthorship W2951882102A5013268397 @default.
• W2951882102 hasAuthorship W2951882102A5014143017 @default.
• W2951882102 hasAuthorship W2951882102A5016099926 @default.
• W2951882102 hasAuthorship W2951882102A5016226901 @default.

• next