Questions tagged [spectral-type]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
1
vote
1answer
43 views

Examples of absorption lines for main sequence stars

Where might I find a detailed table or figure containing the absorption lines and their corresponding wavelengths for each type of main sequence star? I'm trying to get the chemical abundance of ...
-1
votes
1answer
61 views

Compare this planet to Earth and determined its habitability (can humans live in this environment?) [closed]

I'm given this set of data and I need to describe the habitability. Would this not be habitable since the temperature of the albedo and the equilibrium is similar to Earth's or does the Spectral Type ...
8
votes
1answer
66 views

How a star's rotation affects a star in the main sequence?

I searched and have found that the questions mainly focus on neutron stars, white dwarves and black holes. This was not what I looked for. Basically, the bigger the star's mass is, the more intense ...
5
votes
0answers
82 views

Need help understanding stellar spectroscopy data from ESO

The European Southern Observatory webpage has a web page that has tabular spectrogram data from A. J. Pickles, University of Hawaii. There are over 130 .dat files there. Each one represents a ...
4
votes
2answers
68 views

Stellar electromagnetic signatures

By using only the electromagnetic signature of a star, could a star be distinguished with reliable accuracy from any other star? To elaborate a little, say we have a collection of about 200,000 stars. ...
2
votes
2answers
373 views

Can someone explain this diagram showing the spectral type distribution of bright stars

Can someone explain this diagram? The text is in Dutch, free translation: "You are given a graph: a histogram of the 10 000 most apparent bright stars. Explain 1, 2 and 3." The fact that the number ...
1
vote
3answers
581 views

B-V to U-B colour index

Is there a formula to convert the B-V index to U-B index or are they totally different and separate observations and can't be convert like you can with Fahrenheit->Celsius? (Updated) I know F->C ...
2
votes
1answer
90 views

Why is TiO special?

Red spectra of M stars are dominated by TiO(Titanium oxide) bands, which have become the primary means of establishing spectral types.see ApJ Why is TiO special? There should be much more Silicon ...
0
votes
1answer
91 views

Solar Spectral Types and Dwarf Stars

On the following page, http://www.uni.edu/morgans/astro/course/Notes/section2/spectraltemps.html It mentions Main, Giants and SuperGiants. However for Dwarf Stars (e.g. D, Sd) , do I apply Main ...