SIMBAD references

2008MNRAS.386..313W - Mon. Not. R. Astron. Soc., 386, 313-323 (2008/May-1)

AGB variables and the Mira period-luminosity relation.

WHITELOCK P.A., FEAST M.W. and VAN LEEUWEN F.

Abstract (from CDS):

Published data for large-amplitude asymptotic giant branch variables in the Large Magellanic Cloud (LMC) are re-analysed to establish the constants for an infrared (K) period-luminosity relation of the form M_K_= ρ[logP - 2.38] + δ. A slope of ρ = -3.51±0.20 and a zero-point of δ = -7.15±0.06 are found for oxygen-rich Miras (if a distance modulus of 18.39±0.05 is used for the LMC). Assuming this slope is applicable to Galactic Miras we discuss the zero-point for these stars using the revised Hipparcos parallaxes together with published very long baseline interferometry (VLBI) parallaxes for OH masers and Miras in globular clusters. These result in a mean zero-point of δ = -7.25 ± 0.07 for O-rich Galactic Miras. The zero-point for Miras in the Galactic bulge is not significantly different from this value.

Carbon-rich stars are also discussed and provide results that are consistent with the above numbers, but with higher uncertainties. Within the uncertainties there is no evidence for a significant difference between the period-luminosity relation zero-points for systems with different metallicity.


Abstract Copyright: ©2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): stars: AGB and post-AGB - stars: carbon - stars: oscillations - stars: variables: other

VizieR on-line data: <Available at CDS (J/MNRAS/386/313): stars.dat tablea1.dat tablea3.dat>

Simbad objects: 299

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2021.05.18-15:16:20

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