This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Only type O stars are hot enough to show ionized ________ in their spectra. Fill in the blank(s) ... (Read 101 times)

colton

  • Hero Member
  • *****
  • Posts: 627
on: Jul 27, 2018
Only type O stars are hot enough to show ionized ________ in their spectra.
 
  Fill in the blank(s) with correct word

Question 2

For finding the distances to globular clusters, Harlow Shapley used
 
  A) RR Lyrae variables.
  B) planetary nebulae.
  C) eclipsing binaries.
  D) Population I classical Cepheids.
  E) Type I supernovae.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mceravolo

  • Sr. Member
  • ****
  • Posts: 349
Reply #1 on: Jul 27, 2018
Answer to Question 1

helium

Answer to Question 2

A


colton

  • Member
  • Posts: 627
Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

31809pancho

  • Member
  • Posts: 317
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

Your heart beats over 36 million times a year.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones Internal structures of main sequence stars, convection zones with arrowed cycles and radiative zones
Kitagawa Utamaro, The Fickle Type, from the series Ten Physiognomies of Women. Kitagawa Utamaro, The Fickle Type, from the series Ten Physiognomies of Women.
Suture Use, Size, and Type of Material Suture Use, Size, and Type of Material
Rank-order correlations show that differential consistency remains high from childhood through late ... Rank-order correlations show that differential consistency remains high from childhood through late ...
World Total Energy Consumption by Fuel Type World Total Energy Consumption by Fuel Type
High stress, by household type (age-standardized), age 18+, Canada, 1994-1995 High stress, by household type (age-standardized), age 18+, Canada, 1994-1995
Video: Genetic terms Animation

For a complete list of videos, visit our video library