Stars/Star-forming regions/Quiz

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This image shows the spectacular star-forming region known as the Flame Nebula. Credit: ESO/J. Emerson/VISTA. Acknowledgment: Cambridge Astronomical Survey Unit.

Star-forming region is a lecture on an aspect of stellar astronomy and regional astronomy. It is part of the radiation astronomy course on the principles of radiation astronomy.

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Quiz[edit | edit source]


1 Yes or No, A star-forming region is a region of the celestial sphere within which predominately very young stellar objects (YSOs) are located and their formation is likely occurring.


2 The star-forming phenomena related to RCW 79 are which of the following?

a bubble is 70-light years in diameter
the southern Milky Way
the radiation and winds of hot young stars
the hot bubble expands into the interstellar gas and dust around it
new stars along the edge of the large bubble

3 VISTA is the world’s largest survey

4 Chemistry phenomena associated with star-forming regions are

silicate dust
hydrogen molecules
polycyclic aromatic hydrocarbons (PAHs)

5 Complete the text:

Ultraviolet radiation and stellar

from Eta Carinae and its siblings have shredded the

to pieces, leaving a mess of tendrils and


6 Complete the text:

Match up the type of radiation with each of the star-forming possibilities below:
Spitzer infrared - A
VISTA infrared - B
visual - C
XMM-Newton X-rays - D
ultraviolet - E
ESO visual - F
NGC 346

NGC 2024

HH 46/47

NGC 2264


RCW 79


7 Complete the text:

Match up the image with the star-forming regions:
Messier 17 - A
RCW 79 - B
Flame Nebula - C
Cone Nebula - D
NGC 1999 - E
R136 - F
HH 46/47 - G
RCW 108 - H
Carina Nebula - I
NGC 3582 - J
NGC 1097 - K
Hubble-X - L
NGC 6334 - M
Arp 220 - N
Sh 2-106 - O
Rho Ophiuchi complex - P
Ghost Head Nebula - Q
NGC 2366 - R
NGC 2363 - S
Dragonfish nebula - T
Rho Ophiuchi.jpg



Cone Nebula (NGC 2264) Star-Forming Pillar of Gas and Dust.jpg


Wide Field Imager view of the star formation region NGC 3582.jpg

Star-forming region S106 (captured by the Hubble Space Telescope).tif

Wide-field view of the star-forming region around the Herbig-Haro object HH 46 47.jpg

Messier 17.jpg

Hubble Interacting Galaxy Arp 220 (2008-04-24).jpg

Small Section of the Carina Nebula.jpg

Grand star-forming region R136 in NGC 2070 (captured by the Hubble Space Telescope).jpg

Glowing Gas Cloud in the Star-Forming Region of Galaxy NGC 6822 (Hubble).jpg

Spectacular star-forming region known as the Flame Nebula, or NGC 2024.jpg

Hubble view of NGC 2366 - Heic1207a.jpg


Star-forming Region RCW 108 in Ara.jpg

Star-Forming "Bubble" RCW 79.jpg


The star-forming Cat’s Paw Nebula through ArTeMiS’s eyes.jpg


8 Which of the following is not associated with R136?

hundreds of brilliant blue stars
the Milky Way
warm, glowing clouds
the largest stellar nursery in our local galactic neighborhood
the 30 Doradus Nebula
a fantasy landscape of pillars, ridges, and valleys

9 True or False, NGC 346 is a star-forming cloud.


10 Which of the following is not a star-forming region?

Messier 17 sky region
RCW 79
NGC 2024
Local Void
NGC 2264
NGC 6503

Hypotheses[edit | edit source]

  1. It is possible to differentiate star-forming from star-destroying regions.

See also[edit | edit source]

External links[edit | edit source]

{{Principles of radiation astronomy}}