New Evidence Supporting Membership for TW Nor in Lynga 6 and the Centaurus Spiral Arm

Details New Evidence Supporting Membership for TW Nor in Lynga 6 and the Centaurus Spiral Arm New Evidence Supporting Membership for TW Nor in Lynga 6 and the Centaurus Spiral Arm

2011-10-04

arxiv.org/abs/1110.0830v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Accepted for Publication (ApJ Letters)

Scientific paper

The putative association between the 10.8 d classical Cepheid TW Nor and the open cluster Lynga 6 has generated considerable debate in the literature. New JHKs photometry in tandem with existing radial velocities for Lynga 6 stars imply cluster membership for TW Nor, and establish the variable as a high-weight calibrator for classical Cepheid relations. Fundamental mean parameters determined for Lynga 6 are: d=1.91+-0.10 kpc, E(J-H)=0.38+-0.02, and log(t)=7.9+-0.1. The Benedict et al.(2007)/Turner (2010) Galactic VIc Wesenheit function was revised using TW Nor's new parameters: W_VI,0=(-3.37+-0.08)log(P_0)-2.48+-0.08. TW Nor/Lynga 6 lie beyond the Sagittarius-Carina spiral arm and occupy the Centaurus arm, along with innumerable young Cepheids and clusters (e.g., VW Cen & VVV CL070).

Affiliated with

Also associated with

No associations

Rating

New Evidence Supporting Membership for TW Nor in Lynga 6 and the Centaurus Spiral Arm does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with New Evidence Supporting Membership for TW Nor in Lynga 6 and the Centaurus Spiral Arm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New Evidence Supporting Membership for TW Nor in Lynga 6 and the Centaurus Spiral Arm will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-270428