1) A star has (B-V)OBSERVED = 1.8 and (B-V)INTRINSIC = 0.6. (a) What is the color excess of this star? (b) What is the t
Posted: Mon May 09, 2022 2:00 pm
1) A star has (B-V)OBSERVED = 1.8 and (B-V)INTRINSIC = 0.6.
(a) What is the color excess of this star?
(b) What is the total reddening (A) for the star in 1)?
(c) The same star has an apparent magnitude of m = 13.0 and
an absolute magnitude of M = 5. Given its total reddening from
question 2), what is this object’s distance (d)?
(d) Based on the values you have already calculated for A and
d, what is the extinction coefficient (k) for this system?
(e) The average size of some particles in the observed ISM
region is σ = 3 x 10-6 cm3. Are these
particles more likely to be gas atoms or dust grains?
(a) What is the color excess of this star?
(b) What is the total reddening (A) for the star in 1)?
(c) The same star has an apparent magnitude of m = 13.0 and
an absolute magnitude of M = 5. Given its total reddening from
question 2), what is this object’s distance (d)?
(d) Based on the values you have already calculated for A and
d, what is the extinction coefficient (k) for this system?
(e) The average size of some particles in the observed ISM
region is σ = 3 x 10-6 cm3. Are these
particles more likely to be gas atoms or dust grains?