SIMBAD references

2005ApJ...627..579R - Astrophys. J., 627, 579-607 (2005/July-2)

Cepheid calibrations from the Hubble Space Telescope of the luminosity of two recent type Ia supernovae and a redetermination of the Hubble constant.

RIESS A.G., LI W., STETSON P.B., FILIPPENKO A.V., JHA S., KIRSHNER R.P., CHALLIS P.M., GARNAVICH P.M. and CHORNOCK R.

Abstract (from CDS):

We report observations of two nearby Type Ia supernovae (SNe Ia) for which observations of Cepheid variables in the host galaxies have been obtained with the Hubble Space Telescope: SN 1994ae in NGC 3370 and SN 1998aq in NGC 3982. For NCG 3370, we used the Advanced Camera for Surveys to observe 64 Cepheids that yield a distance of 29 Mpc, the farthest direct measurement of Cepheids. We have measured emission lines from H II regions in both host galaxies that provide metallicity-dependent corrections to their period-luminosity relations. These two SNe Ia double the sample of ``ideal'' luminosity calibrators: objects with well-observed and well-calibrated light curves of typical shape and with low reddening. By comparing them to all similarly well-measured SNe Ia in the Hubble flow, we find that H0=73±4(statistical)±5(systematic) km/s/Mpc. A detailed analysis demonstrates that most of the past disagreement over the value of H0as determined from SNe Ia is abated by the replacement of past, problematic data by more accurate and precise, modern data.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Observations - Cosmology: Distance Scale - Galaxies: Distances and Redshifts - Stars: Supernovae: General

VizieR on-line data: <Available at CDS (J/ApJ/627/579): table2.dat table3.dat table4.dat table5.dat table11.dat table12.dat>

Nomenclature: Table 3: [RLS2005] NNNNN N=51. Table 4: [RLS2005] NNNNN N=64. Fig.10, Table 9: [RLS2005] SN 1994AE NNa (Nos 1-20, 1a, 2a, 3a). Fig.11, Table 10: [RLS2005] SN 1998AQ NN (Nos 1-14).

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2. // All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 25

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