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/sci/ - Science & Math

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3050025 No.3050025 [Reply] [Original]

can anyone please help me with this cosmology question?

Basically i have to calculate the distance to quasar 3c273 with only the apparent magnitude which is 12.8 in this case. I've tried doing (mf-mb)=vbrightness comparing it to our sun but my answer of distance from the brightness does not seem right. Please help!

In return my puppy = )

>> No.3050028

If it helps i can also use a redshift equation

Z=(wavelength emitted)/(wavelength observed)

and the Z of 3c273 = 0.158

>> No.3050074

:(

>> No.3050077

that puppy's fuckin' adorable.
You're lucky.

>> No.3050085
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3050085

haha thanks, here is some more!

>> No.3050090
File: 236 KB, 1280x960, Amaya with mym in the back yard.jpg [View same] [iqdb] [saucenao] [google]
3050090

Last one for now! - 4 weeks old here

>> No.3050093

>comparing quasar to a star

O_o

Also:
http://ceres.hsc.edu/homepages/classes/astronomy/spring99/Mathematics/sec19.html

>> No.3050129

Thanks, i'll check it out now.

>> No.3050143

>>3050025

you give birth to baby dogs?

>> No.3050155

Only thing is, how can i get the absolute magnitude with only; the apparent magnitude to be able to solve for D?

>> No.3050320

bump

>> No.3051047
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3051047

What type of dog is that?