🌌 10 Tips: What to Look for in a Star’s Spectrum

                                        🌌 10 Tips: What to Look for in a Star’s Spectrum




Rainbow Spread – Notice the continuous band of colors, from violet to red .

Dark Lines (Absorption Lines) – These are the “fingerprints” of elements in the star’s atmosphere.

Brightness Levels – How strong or faint the light is across colors reveals the star’s temperature.

Line Patterns – Hydrogen, sodium, and calcium have unique line positions—like barcodes.

Color Tilt – A blue-shift (lines shifted left) means the star is moving toward us; red-shift means moving away.

Sharp vs. Broad Lines – Broader lines suggest high pressure or rapid spinning.

Line Depth – Deep absorption lines show more of that element in the star’s atmosphere.

Continuum Shape – The general curve shows the star’s temperature (hot stars peak in blue, cooler stars in red).

Special Bands – Molecules in cooler stars (like M dwarfs) create wide absorption bands.

Compare with Others – Each star has a unique spectrum, like a cosmic fingerprint!


Credits- Chatgpt - Text and Graphic

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