Stellar Observations & Star Clusters

The Rosette nebula is an example of a(n) ____ nebula - which glows due to hot nearby stars.

• spectacular

• emission

• diffuse

• globular

Emission nebulae can tell astronomers

• how old the Universe is.

• where the old stars of the galaxy are located.

• how far away the nebula cloud is.

• where other new stars are forming.

Tags

NGSS.HS-ESS1-3

The Infrared Astronomy Satellite (IRAS ) launched in 1983 first imaged

• infrared signatures of nearby planets.

• galactic-core formations.

• new star formation with proto-planetary disks.

• black holes at the center of each globular cluster.

Tags

NGSS.HS-PS4-3

The Beta Pictoris system that was imaged by IRAS clearly showed

• a planetary disk of material circling the young star.

• massive planets and comets still swirling around.

• ancient aliens.

• that it was part of an open star cluster.

Tags

NGSS.MS-ESS1-2

Protostars shine brightly in the ____ region of the light spectrum.

• optical (or visible)

• infrared

• x-ray

• ultraviolet

Tags

NGSS.HS-PS4-3

Protostars are very active as evident by infrared observations of dense, concentrated emissions

• of solar flares & coronal mass ejections.

• of x-rays into the surrounding planetary disks.

• called biaxial collimated super flows.

• called bipolar jets or flows.

When a star is born in a nebula, ____ are produced which triggers more stars to form.

• tidal waves

• shock waves

• bipolar jets

• gravity waves

How do star clusters form?

• by collapsing molecular clouds in interstellar space

• by a congregation of mass through black holes

• through massive shock waves

• through worm holes in space/time

All stars in a cluster are about the same age. Why?

• the big bang made all stars equal

• because they're all made of hydrogen

• they formed from the same material in the same region

• because they all started out as protostars

What factor(s) determine whether a star becomes a massive "O" or less massive "M" type star?

• initial stellar mass inside a nebula cloud

• where and how these stars form in the galaxy

• whether or not there are protostars in a molecular cloud

• initial nebular mass at the outset of cloud expansion