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...
-
May 14, 2009 (v1)Journal articleUploaded on: December 4, 2022
-
2011 (v1)Journal article
International audience
Uploaded on: December 4, 2022 -
May 2013 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
2011 (v1)Journal article
International audience
Uploaded on: December 4, 2022 -
2011 (v1)Journal article
International audience
Uploaded on: December 4, 2022 -
2021 (v1)Journal article
Context. Surface brightness-color relations (SBCRs) are widely used for estimating angular diameters and deriving stellar properties. They are critical to derive extragalactic distances of early-type and late-type eclipsing binaries or, potentially, for extracting planetary parameters of late-type stars hosting planets. Various SBCRs have been...
Uploaded on: December 4, 2022 -
2011 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
October 2019 (v1)Publication
Our sample is made up of 64 Classical Galactic Cepheids with pulsation periods in the range 2 to 68 days. We provide the full details of our sample in Table A.1. We present both the six correlation templates built to derive tailored cross-correlation functions (CCFs), the CCFs themselves, and the derived radial velocity and line profile...
Uploaded on: December 4, 2022 -
2012 (v1)Journal article
International audience
Uploaded on: December 4, 2022 -
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...
Uploaded on: December 4, 2022 -
2012 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
2020 (v1)Journal article
Context. The surface brightness – color relationship (SBCR) is a poweful tool for determining the angular diameter of stars from photometry. It was for instance used to derive the distance of eclipsing binaries in the Large Magellanic Cloud (LMC), which led to its distance determination with an accuracy of 1%.Aims. We calibrate the SBCR for red...
Uploaded on: December 4, 2022 -
August 2018 (v1)Journal article
Context. The dynamical structure of the atmosphere of Cepheids has been well studied in the optical. Several authors have found very interesting spectral features in the J band, but little data have been secured beyond 1.6 μm. However, such observations can probe different radial velocities and line asymmetry regimes, and are able to provide...
Uploaded on: December 4, 2022 -
August 2020 (v1)Publication
We extended the sample of 35 eclipsing binaries compiled by Graczyk+ (2017ApJ...837....7G) by searching for detached systems in the literature suitable for a precise distance determination. Our sample contains 81 systems (51 on the northern hemisphere and 30 on the southern one). Their basic parameters are presented in Table 1. We used Tycho-2...
Uploaded on: December 4, 2022