2008ApJ...689..709O

Query : 2008ApJ...689..709O

2008ApJ...689..709O - Astrophys. J., 689, 709-720 (2008/December-3)

Photometric redshift error estimators.

OYAIZU H., LIMA M., CUNHA C.E., LIN H. and FRIEMAN J.

Abstract (from CDS):

Photometric redshift (photo-z) estimates are playing an increasingly important role in extragalactic astronomy and cosmology. Crucial to many photo-z applications is the accurate quantification of photometric redshift errors and their distributions, including identification of likely catastrophic failures in photo-z estimates. We consider several methods of estimating photo-z errors, and propose new training-set based error estimators based on spectroscopic training set data. Using data from the Sloan Digital Sky Survey and simulations of the Dark Energy Survey as examples, we show that this method provides a robust, relatively unbiased estimate of photo-z errors. We show that culling objects with large, accurately estimated photo-z errors from a sample can reduce the incidence of catastrophic photo-z failures.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Distances and Redshifts - Galaxies: Photometry

Simbad objects: 1

goto Full paper

goto View the references in ADS

Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1967 1

Query : 2008ApJ...689..709O

Basic data :
NAME Hubble Deep Field -- Region defined in the Sky
Other object types: otypes_help 		reg ()
ICRS coord. (ep=J2000) : 		12 36 49.5 +62 12 58 [ ] D ~
FK4 coord. (ep=B1950 eq=1950) : 		12 34 35.5 +62 29 28 [ ]
Gal coord. (ep=J2000) : 		125.8875 +54.8282 [ ]
SIMBAD within arcmin
Overlay Simbad points in this preview
Back
All CDSPortal (CDSPortal)
Send to sendBySAMP sendBySAMP
sedIcon
within arcsec sed-help-icon
notes:

Identifiers (7) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

NAME HDF NAME HDFN NAME Hubble Deep Field NAME Northern Hubble Deep Field
NAME HDF-N NAME NHDF NAME Hubble Deep Field North

References (1967 between 1850 and 2026) (Total 1967)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

Observing logs

ISO : 9    XMM : 7   

   

External archives :

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

The annotation server is currently not available. Sorry for any inconvenience

To bookmark this query, right click on this link: simbad:objects in 2008ApJ...689..709O and select 'bookmark this link' or equivalent in the popup menu