1998ApJ...507..483K

Query : 1998ApJ...507..483K

1998ApJ...507..483K - Astrophys. J., 507, 483-496 (1998/November-2)

The effects of inhomogeneities on evaluating the mass parameter Ω_m_ and the cosmological constant Λ.

KANTOWSKI R.

Abstract (from CDS):

Analytic expressions for distance-redshift relations that have been corrected for the effects of inhomogeneities in the Friedmann-Lemaître-Robertson-Walker (FLRW) mass density are given in terms of Heun functions and are used to illustrate the significance of inhomogeneities on a determination of the mass parameter Ωm and the cosmological constant Λ. The values of these parameters inferred from a given set of observations depend on the fractional amount of matter in inhomogeneities and can significantly differ from those obtained by using the standard magnitude-redshift (m-z) result for pure dust FLRW models. As an example, a determination of Ωm made by applying the homogeneous distance-redshift relation to SN 1997ap at z = 0.83 could be as much as 50% lower than its true value.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Theory - Cosmology: Large-Scale Structure of Universe

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 SN 1997ap SN* 13 47 09.90 +02 23 57.5       23.20   SNIa 26 1

Query : 1998ApJ...507..483K

Basic data :
SN 1997ap -- SuperNova
Other object types: otypes_help 		SN* (2012A&A,SN)
ICRS coord. (ep=J2000) : 		13 47 09.90 +02 23 57.5 [ 500 500 90 ] D 1997IAUC.6596Q...1S
FK4 coord. (ep=B1950 eq=1950) : 		13 44 37.45 +02 38 54.6 [ 500 500 90 ]
Gal coord. (ep=J2000) : 		333.64540 +61.90150 [ 500 500 90 ]
Radial velocity / Redshift / cz : 		V(km/s) 161806 [~] / z(~) 0.8290 [~] / cz 248528 [~]
   D 2003ApJ...594....1T
Spectral type: 		SNIa C 2008yCat....1.2024B
Fluxes (1) :
R 23.20 [~] D 2008yCat.2283....0B
SIMBAD within arcmin
Overlay Simbad points in this preview
Back
All CDSPortal (CDSPortal)
Send to sendBySAMP sendBySAMP
sedIcon
within arcsec sed-help-icon
notes:

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 Display criteria :

Identifiers (1) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

SN 1997ap

References (26 between 1850 and 2026) (Total 26)
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)

Collections of Measurements Description of Measurements

SpT : 1   

   

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 1998ApJ...507..483K and select 'bookmark this link' or equivalent in the popup menu