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相关论文: AGB Variables and the Mira Period-Luminosity Relat…

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The kinematical parameters of the local field RR Lyrae population and the zero point of the log P--<M_K> relation for these variables are inferred by applying the statistical parallax (maximum-likelihood) technique to a sample of 182 RR…

天体物理学 · 物理学 2007-05-23 A. K. Dambis

A period-metallicity relation for oxygen-rich Miras derived from globular clusters is applied to similar variables in the galactic Bulge. The metallicity distribution in the Bulge thus obtained is in good agreement with that derived from K…

天体物理学 · 物理学 2016-01-27 Michael Feast , Patricia Whitelock

We have measured an annual parallax of the Mira variable R~Ursae~Majoris (R~UMa) with the VLBI exploration for Radio Astronomy (VERA). From the monitoring VLBI observations spanning about two years, we detected H$_2$O maser spots in the LSR…

Near-infrared, JHKL, photometry of 239 Galactic carbon-rich variable stars is presented and discussed. From these and published data the stars were classified as Mira or non-Mira variables and amplitudes and pulsation periods, ranging from…

天体物理学 · 物理学 2009-11-11 Patricia A. Whitelock , Michael W. Feast , Freddy Marang , M. A. T. Groenewegen

Mira variables in globular clusters can provide an accurate and precise absolute calibration of their period-luminosity relations (PLRs) to independently anchor the cosmic distance scale and determine the Hubble constant. We present…

星系天体物理 · 物理学 2025-08-11 Anupam Bhardwaj , Noriyuki Matsunaga , Caroline D. Huang , Adam G. Riess , Marina Rejkuba

This article presents the study of the light-curves extracted from the MACHO database of a sample of stars observed by the ISO in the SMC. These stars belong to the ISO-Mini-Survey catalogue of the Magellanic Clouds (ISO-MCMS, Loup et al.…

This paper summarizes the conclusions of an extensive investigation of variable carbon AGB stars in our Galaxy. The zero-point of the period-M(bol) relation for Galactic C-Miras is found to be close to that in the LMC. The mean age of…

天体物理学 · 物理学 2007-05-23 Michael Feast

The near and mid-infrared characteristics of large amplitude, Mira, variables in Local Group dwarf irregular galaxies (LMC, NGC 6822, IC 1613, Sgr dIG) are described. Two aspects of these variables are discussed. First, the short period (P…

星系天体物理 · 物理学 2017-11-27 Patricia A. Whitelock

We comprehensively study the variability of Miras in the Large Magellanic Cloud (LMC) by simultaneous analysing light curves in 14 bands in the range of 0.5$-$24 microns. We model over 20-years-long, high cadence $I$-band light curves…

We combine variability information from the MAssive Compact Halo Objects (MACHO) survey of the Large Magellanic Cloud (LMC) with infrared photometry from the Spitzer Space Telescope Surveying the Agents of a Galaxy's Evolution (SAGE) survey…

太阳与恒星天体物理 · 物理学 2015-05-06 David Riebel , Margaret Meixner , Oliver Fraser , Sundar Srinivasan , Kem Cook , Uma Vijh

Here we provide a review of Mira variables, their basic properties, and Period-Luminosity Relations with an emphasis on their role in measuring the Hubble Constant. The usage of multiple independent distance indicators and methods is…

宇宙学与河外天体物理 · 物理学 2024-01-19 Caroline D. Huang

The Period - metallicity - K band luminosity (PLK) relation for RR Lyrae stars in 15 Galactic globular clusters and in the LMC globular cluster Reticulum has been derived. It is based on accurate near infrared (K) photometry combined with…

天体物理学 · 物理学 2009-11-11 A. Sollima , C. Cacciari , E. Valenti

Evolution of stars with initial masses $M_\mathrm{ZAMS}=1.1M_\odot$, $1.3M_\odot$, $1.5M_\odot$ and relative mass abundances of metals $Z=0.006$ and 0.02 was computed from the main sequence up to the final AGB stage. Selected models of…

太阳与恒星天体物理 · 物理学 2025-08-12 Yuri Fadeyev

Evidence for the existence of Mira Period-Luminosity relations is reviewed including recent work on Miras with thick circumstellar shells. The calibration of the relation at K is discussed in detail. The nature of variables deviating from…

天体物理学 · 物理学 2007-05-23 Michael Feast

In this paper we confirm the existence of period-luminosity (PL) and period-luminosity-colour (PLC) relations at maximum light for O and C Mira variables in the LMC. We demonstrate that in the J and H bands the maximum light PL relations…

天体物理学 · 物理学 2015-06-24 S. M. Kanbur , M. A. Hendry , D. Clarke

The prevailing evidence suggests that most large-amplitude AGB variables follow the period luminosity (PL) relation that has been established for Miras in the LMC and galactic globular clusters. Hipparcos observations indicate that most…

天体物理学 · 物理学 2016-01-27 Patricia Whitelock

The luminosities and periods of obscured AGB stars in the LMC are discussed using a combination of ISO and ground-based infrared photometry. The bolometric luminosities of these stars fall close to an extrapolation of the period-luminosity…

天体物理学 · 物理学 2007-05-23 Patricia Whitelock , Michael Feast

HIPPARCOS astrometric and kinematical data of oxygen-rich Mira variables are used to calibrate absolute near-infrared magnitudes and kinematic parameters. Two sets of near-infrared magnitudes compiled from different authors are used:…

天体物理学 · 物理学 2007-05-23 R. Alvarez , M-O. Mennessier , D. Barthes , X. luri , J. A. Mattei

The characteristics of oxygen-rich and carbon-rich, large amplitude (dK>0.4 mag), asymptotic giant branch variables in the Large Magellanic Clouds are discussed, with an emphasis on those obscured by dust. Near-infrared photometry, obtained…

天体物理学 · 物理学 2009-11-07 Patricia A. Whitelock , Michael W. Feast , Jacco Th. van Loon , Albert A. Zijlstra

The kinematics of galactic C-Miras are discussed on the basis of the bolometric magnitudes and radial velocities of Papers I and II of this series. Differential galactic rotation is used to derive a zero-point for the bolometric…

天体物理学 · 物理学 2009-11-11 Michael W. Feast , Patricia A. Whitelock , John W. Menzies