Rate of Period Change as a Diagnostic of Cepheid Properties

Abstract

Rate of period change $\dot{P}$ for a Cepheid is shown to be a parameter that is capable of indicating the instability strip crossing mode for individual objects, and, in conjunction with light amplitude, likely location within the instability strip. Observed rates of period change in over 200 Milky Way Cepheids are demonstrated to be in general agreement with predictions from stellar evolutionary models, although the sample also displays features that are inconsistent with some published models and indicative of the importance of additional factors not fully incorporated in models to date.

Published in PASP (March 2006); TeX source & figures now provided

References in corpus (6)

• Stellar evolution with rotation VIII: Models at Z = 10^{-5} and CNO yields for early galactic evolution
• Database of Geneva stellar evolution tracks and isochrones for UBVRIJHKLL'M, HST-WFPC2, Geneva and Washington photometric systems
• Using Cepheids to determine the galactic abundance gradient I. The solar neighbourhood
• Intermediate-mass star models with different helium and metal contents
• New Period-Luminosity and Period-Color Relations of Classical Cepheids: II. Cepheids in LMC
• Using Cepheids to determine the galactic abundance gradient. III.First results for the outer disc

Cited by in corpus (63)

• On the Effect of Rotation on Populations of Classical Cepheids II. Pulsation Analysis for Metallicities 0.014, 0.006, and 0.002
• Characteristics of the Galaxy according to Cepheids
• On the Enhancement of Mass Loss in Cepheids Due to Radial Pulsation
• On the effect of rotation on populations of classical Cepheids I. Predictions at solar metallicity
• Observational studies of Cepheid amplitudes. I - Period-amplitude relationships for Galactic Cepheids and interrelation of amplitudes
• The PL calibration for Milky Way Cepheids and its implications for the distance scale
• Extended envelopes around Galactic Cepheids III. Y Oph and alpha Per from near-infrared interferometry with CHARA/FLUOR
• Period and light curve fluctuations of the Kepler Cepheid V1154 Cyg
• Reddenings of FGK supergiants and classical Cepheids from spectroscopic data
• New Evidence for Mass Loss from delta Cephei from HI 21-cm Line Observations
• TESS observations of Cepheid stars: first light results
• Classical Cepheids Require Enhanced Mass Loss
• The period change of the Cepheid Polaris suggests enhanced mass loss
• Vetting Galactic Leavitt Law Calibrators using Radial Velocities: On the Variability, Binarity, and Possible Parallax Error of 19 Long-period Cepheids
• Study of changes in the pulsation period of 148 Galactic Cepheid variables
• Theoretical rates of pulsation period change in the Galactic Cepheids
• Convection, granulation and period jitter in classical Cepheids
• Assessing potential cluster Cepheids from a new distance and reddening parameterization and 2MASS photometry
• Three open clusters containing Cepheids: NGC 6649, NGC 6664 and Berkeley 55
• The Pulsation Mode of the Cepheid Polaris
• The period and amplitude changes of Polaris (alpha UMi) from 2003 to 2007 measured with SMEI
• Alessi 95 and the short period Cepheid SU Cassiopeiae
• VELOcities of CEpheids (VELOCE) I. High-precision radial velocities of Cepheids
• Investigating light curve modulation via kernel smoothing. II. New additional modes in single-mode OGLE classical Cepheids
• Is there a mass discrepancy in the Cepheid binary OGLE-LMC-CEP0227?
• Galactic clusters with associated Cepheid variables. VII. Berkeley 58 and CG Cassiopeiae
• Anchors for the Cosmic Distance Scale: the Cepheids U Sgr, CF Cas and CEab Cas
• Homing in on Polaris: A 7 M${}_{\odot }$ first-overtone Cepheid entering the instability strip for the first time
• The Secret Lives of Cepheids: Evolution, Mass Loss, and Ultraviolet Emission of the Long-Period Classical Cepheid $l$ Carinae
• Open clusters housing classical Cepheids in Gaia DR3
• Anchors for the Cosmic Distance Scale: the Cepheid QZ Normae in the Open Cluster NGC 6067
• The Orbit of the Close Companion of Polaris: Hubble Space Telescope Imaging 2007 to 2014
• The Period Changes of the Cepheid RT Aurigae
• Period Change Rates in Large Magellanic Cloud Cepheids Revisited
• Evolution and pulsation period change in the Large Magellanic Cloud Cepheids
• Investigating Light Curve Modulation via Kernel Smoothing. I. Application to 53 fundamental mode and first-overtone Cepheids in the LMC
• Problems and possibilities in fine-tuning of the Cepheid P-L relationship
• Revisiting the fundamental properties of Cepheid Polaris using detailed stellar evolution models
• V363 Cas: a new lithium rich Galactic Cepheid
• HD344787: a true Polaris analogue?
• Discovery of a binary-origin classical Cepheid in a binary system with a 59-day orbital period
• A Search for OB Associations Near Southern Long-Period Cepheids. V. AQ Puppis and V620 Puppis
• Synthetic population of binary Cepheids. I. The effect of metallicity and initial parameter distribution on characteristics of Cepheids' companions
• The Cepheid Impostor HD 18391 and its Anonymous Parent Cluster
• Period Change Rates of Large Magellanic Cloud Cepheids using MESA
• The Pulsation Mode and Distance of the Cepheid FF Aquilae
• A Search for Mass Loss on the Cepheid Instability Strip using HI 21-cm Line Observations
• Search for Classical Cepheids in Galactic Open Clusters and Calibration of the Period Wesenheit Metallicity Relation in the Gaia Bands
• On the dynamical evolution of Cepheid multiplicity in star clusters and its implications for B-star multiplicity at birth
• Does Collinder 236 host a Cepheid calibrator?
• Period Variations for the Cepheid VZ Cyg
• How Rotation Affects Masses and Ages of Classical Cepheids
• The influential effect of blending, bump, changing period and eclipsing Cepheids on the Leavitt law
• Linear nonadiabatic pulsation models of the double-mode Cepheid V371 Per
• Toward a Comprehensive Grid of Cepheid Models with MESA. III. Evolutionary and Pulsation Relations for Models with Core and Envelope Overshooting
• Pulsation and Mass Loss Across the HR Diagram: From OB stars to Cepheids to Red Supergiants
• Evolutionary and hydrodynamic models of short--period Cepheids
• Modern observations of Hubble's first-discovered Cepheid in M31
• Acoustic and buoyancy modes throughout stellar evolution - Seismic properties of stars at different stellar ages and masses
• Analytic Marginalization over Binary Variables in Physics Data
• The VELOCE modulation zoo III. Detecting additional pulsation modes in optical spectra of classical Cepheids using semi-partial distance correlation periodograms
• Toward a Comprehensive Grid of Cepheid Models with MESA. IV. Modest Effects of Rotation on Blue Loops
• Reconstruction of Cepheid Radial Velocity Curves from the shape of the V-band Light Curves