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awarded  Notable Question
Apr
16
accepted Error propagation estimation
Apr
15
comment Error propagation estimation
why did you have obtained $3 \sigma_A/A?$ what's the difference with this formula? en.wikipedia.org/wiki/Propagation_of_uncertainty#Simplification many thanks
Apr
15
comment Error propagation estimation
Could you explain me how you have obtained the second results? thanks
Apr
15
comment Error propagation estimation
@Numrok Question edited. Please, let me know if you need other details. Many thanks
Apr
15
revised Error propagation estimation
added 378 characters in body
Apr
15
comment Error propagation estimation
@Numrok yes, I know them. For example, $log M=(0.755 \pm 0.059)*log B+(0.416\pm 0.024)$. The value of B is given by a software and its error is 0.0002. Using the fomulas, I get M and N. It is assumed that the error on M and N is 15%. I'd like to know how the error on B affect the value of A.
Apr
15
asked Error propagation estimation
Apr
5
awarded  Popular Question
Apr
4
asked Dependence of low res spectrum of binary system on phase
Mar
13
comment Light curve analysis: how to estimate temperatures of Binary star system
What quantity are you referring to with "flux ratio"? Could you give me some formula or references to calculate bolometric flux? I have found this paper articles.adsabs.harvard.edu/cgi-bin/… but I haven't understood in which way I can use it...
Mar
11
comment Light curve analysis: how to estimate temperatures of Binary star system
A lot of thanks, I'm not an astrophysics student, so I have some doubts... If I want to calculate the flux at the minima, is it correct the formula $F_v=10^(-0.4 (V_{mag}-V_{min}))$ where $V_{mag}$ is the apparent magnitude at the minima and $V_{min}$ is the minimum value of the magnitude? And then How can I obtain the bolometric flux? A lot of thanks for your help
Mar
11
revised Light curve analysis: how to estimate temperatures of Binary star system
added 14 characters in body
Mar
11
comment Light curve analysis: how to estimate temperatures of Binary star system
@RobJeffries you're right. In fact I also have an estimation for distance. Can you give some hints about how to proceed?
Mar
11
asked Light curve analysis: how to estimate temperatures of Binary star system
Feb
9
accepted Diagonal of a thin rectangular foil, inertial principal axis?
Feb
8
comment Diagonal of a thin rectangular foil, inertial principal axis?
Why, for example, the second term in the first row is 0?
Feb
8
comment Diagonal of a thin rectangular foil, inertial principal axis?
Thanks a lot for your anser! What do you mean for "body coordinates"?
Feb
8
revised Diagonal of a thin rectangular foil, inertial principal axis?
edited tags
Feb
8
asked Diagonal of a thin rectangular foil, inertial principal axis?