Contact information

If you have any question or comment, please send an email to "cy-at-ahu.edu.cn".

Latest News

Gaia EDR3 filters added

November 20, 2020

Added Gaia EDR3 filters.

YBC paper on arXiv.org/astro-ph

October 22, 2019

The paper is available at arXiv:1910.09037. It is accepted for publication in A&A.

Non-uniform extinction for stars

October 21, 2019

Now you can supply different extinction value for different stars in your catalogue, by specifying the column number in section 4.

New extinction interpolation scheme and corrrections

May 23, 2019

Instead of using polynominal coefficients as in the last update, we now compute grids with Av=[0., 0.5, 1., 2., 5., 10., 20] and interpolate among them. Correct an error for AB+Vega mixed photometric systems.

Variable extinction implemented

April 24, 2019

Every spectrum used has been convlved with the extinction curve (Cardelli et al. (1989) + O'Donnell (1994) with RV=3.1.), therefore the spectral variation effect hass been considered. The non-lineararity as a function of Av amount has been also taken into account until the third order of the polynomial: Ai = a1*Av + a2*Av^2 + a3*Av^3.

YBC in PHP

February 22, 2019

Now website is changed from Python/Flask to PHP. Latest BC tables and interpolation code used now.
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YBC on public domain

October 1st, 2018

This website is now on public domain.
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YBC Web interface Launched

September 17th, 2018

The first time this website is on-line for internal test. It provides you the bolometric corrections given the stellar parameters.
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Useful Links

The tables can be downloaded at
https://gitlab.com/cycyustc/Spec_YBC.