Recent content by quasarLie

if you take a look at quasars catalogue, you will see that there are many quasars with redshift<2.

Can you explain more please?

No they are considered as quasars by SDSS. and it s not measurement error

Thanks this is why am working on, i am using DR2 to study the proper motion of quasars. I found that the most of quasars does not have a proper motion, but few of them have a proper motion. how can t his be explained (are they quasars with small redshift?)

Hello, Does quasars has a proper motion? I searched in different article and sometimes they are considered as objects having a proper motion and other times not. So I want some clarification. in which case can we say that a quasar has a proper motion? Thanks

Thanks, when i download the spectra i have 4 columns wavelength flux bestfit and skyflux. Do you know what they mean by BestFit and skyFlux please?

and i want something like this This is the code that i am using fidi = fopen('bic.dat'); t = textscan(fidi, '%f%f', 'Delimiter',','); fclose(fidi); x=t{1}; y=t{2}; delta= x-y;figure(1) plot(y, delta, 'k*') y2=0.97*x+0.39 hold on; plot(x,y2,'red') I tried with yours and it s the same problem

With the equation the code give me this, and it s not correct

Yes I tried it for this code. I want the equation of the line in form g2=0.97*r+0.39 to appear on my scatter plot Thanks for your help

Yes it s a linear regression. i tried what you said but it does not work. I did this code for the same file to plot the two columns but i don t know how to use the equation fidi = fopen('bic.dat'); t = textscan(fidi, '%f%f', 'Delimiter',','); fclose(fidi); x=t{1}; y=t{2}; delta= x-y; figure(1)...

thanks a lot, do you know how can I use this equation in the code g=0.97*r+0.39

Hello, i need help with my code please , i have a file named 'bic' which contain only 2 columns . I want to plot this two columns. Data=importdata('bic.dat'); g=Data.data(:,2) r=Data.data(:,1); delta=r-g; plot(r,delta,'b*'); And i have this error struct contents reference from a non-struct...

what do you mean by between two bins, why this happens only with 0.3 and 0.7??

Soory but i really don't see how i can fix it. I tried what you said but it changes nothing iot gives the same histogram

Yes, these are my data 0.70 0.10 0 0.80 0.80 1 0.80 1.2 0.60 2.50 0 0.5 0.70 0.60 0.10 0.60 0.70 0.60 0.10 0.20 0.70 3.1 0.40 0.3 0.500000000000000 0.800000000000000 0.100000000000000 0.200000000000000 1.50000000000000 0.800000000000000 1.60000000000000 0.200000000000000 1 1 0.200000000000000...