Context. One challenge for measuring the Hubble constant using classical Cepheids is the calibration of the Leavitt law or period-luminosity relationship. The Baade-Wesselink method for distance determination to Cepheids relies on the ratio of the measured radial velocity and pulsation velocity, the so-called projection factor and the ability...
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2012 (v1)Journal articleUploaded on: December 4, 2022
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May 14, 2009 (v1)Journal article
Context: The cross correlation method (hereafter CC) is widely used to derive the radial velocity curve of Cepheids when the signal to noise ratio of the spectra is low. However, if it is used with an inaccurate projection factor, it might introduce some biases in the Baade-Wesselink (BW) methods of determining the distance of Cepheids. In...
Uploaded on: December 4, 2022 -
2011 (v1)Journal article
International audience
Uploaded on: December 4, 2022 -
2011 (v1)Journal article
International audience
Uploaded on: December 4, 2022 -
2011 (v1)Journal article
International audience
Uploaded on: December 4, 2022 -
2011 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
December 2019 (v1)Journal article
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2012 (v1)Journal article
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2017 (v1)Journal article
Context. The projection factor p is the key quantity used in the Baade-Wesselink (BW) method for distance determination; it converts radial velocities into pulsation velocities. Several methods are used to determine p, such as geometrical and hydrodynamical models or the inverse BW approach when the distance is known. Aims. We analyze new...
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2012 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
December 2018 (v1)Journal article
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October 2022 (v1)Journal article
Aims. Surface brightness – colour relations (SBCRs) are very useful tools for predicting the angular diameters of stars. They offer the possibility to calculate very precise spectrophotometric distances by the eclipsing binary method or the Baade-Wesselink method. Double-lined Detached Eclipsing Binary stars (SB2 DEBs) with precisely known...
Uploaded on: December 4, 2022