SIMBAD references

2012ApJ...748L...9M - Astrophys. J., 748, L9 (2012/March-3)

Discovery of the host cluster for the fundamental cepheid calibrator zeta Geminorum.

MAJAESS D., TURNER D., GIEREN W., BALAM D. and LANE D.

Abstract (from CDS):

New and existing CORAVEL, UBVJHKs, HST, HIP/Tycho, ARO, KPNO, and DAO observations imply that the fundamental Cepheid calibrator ζ Gem is a cluster member. The following parameters were inferred for ζ Gem from cluster membership and are tied to new spectral classifications (DAO) established for 26 nearby stars (e.g., HD53588/B7.5IV, HD54692/B9.5IV): E _ B - V_= 0.02±0.02, log τ = 7.85±0.15, and d = 355±15 pc. The mean distance to ζ Gem from cluster membership and six recent estimates (e.g., IRSB) is d = 363 ± 9σ{bar}x) ± 26(σ pc. The results presented here support the color-excess and HST parallax derived for the Cepheid by Benedict et al. Forthcoming precise proper motions (DASCH) and Chandra/XMM-Newton observations of the broader field may be employed to identify cluster members, bolster the cluster's existence, and provide stronger constraints on the Cepheid's fundamental parameters.

Abstract Copyright:

Journal keyword(s): Hertzsprung-Russell and C-M diagrams - open clusters and associations: general - stars: distances - stars: variables: Cepheids

Nomenclature: Table 1: [MTG2012b] JHHMMSS.s+DDMMSS.s N=6.

Simbad objects: 40

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2019.12.12-13:06:59

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