Large Magellanic Cloud Bump Cepheids: Probing the Stellar Mass-Luminosity Relation

Details Large Magellanic Cloud Bump Cepheids: Probing the Stellar Mass-Luminosity Relation Large Magellanic Cloud Bump Cepheids: Probing the Stellar Mass-Luminosity Relation

2002-05-31

arxiv.org/abs/astro-ph/0205555v2

Astrophys.J. 578 (2002) 144-150

Astronomy and Astrophysics

Astrophysics

23 pages, 5 figures, ApJ accepted

Scientific paper

10.1086/342315

We present the results of non-linear pulsation modelling of 20 bump Cepheids in the LMC. By obtaining a optimal fit to the observed V,R MACHO lightcurves we have placed tight constraints on stellar parameters of M, L, Teff and well as quantities of distance modulus and reddening. We describe the mass-luminosity relation for core-He burning for intermediate mass stars. The mass-luminosity relation depends critically on the level of mixing within the stellar interior over the course of the main-sequence lifetime. Our sample is significantly more luminous than predicted by classical stellar evolutionary models that do not incorporate extension to the convective core. Under the paradigm of convective core overshoot our data implies $\Lambda_c$ of 0.65$\pm0.03l/H_p$. We derive a LMC distance modulus of 18.55$\pm$0.02.

Affiliated with

Also associated with

No associations

Rating

Large Magellanic Cloud Bump Cepheids: Probing the Stellar Mass-Luminosity Relation 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 Large Magellanic Cloud Bump Cepheids: Probing the Stellar Mass-Luminosity Relation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large Magellanic Cloud Bump Cepheids: Probing the Stellar Mass-Luminosity Relation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-75591