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These are infrared images of Vega. Credit: NASA/JPL-Caltech/University of Arizona.

Vega is a lecture about the star Vega. It is in a series of lectures from the radiation astronomy department on stars and stellar configurations.

You are free to take this quiz based on Vega at any time.

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Quiz

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1 Which of the following is not a spectral class B star?

Spica
Vega
Bellatrix
Rigel
Regulus
Achernar

2 Chemistry phenomena associated with a star are likely to be

at least three-quarters of the human genome
hydrogen gas
lithium gas
pressure
ions
plastic

3 Which of the following is not a spectral class A star?

Sirius A
Vega
Bellatrix
Deneb
Altair
Fomalhaut

4 True or False, The character, sign, or symbol ⊙ may represent the Sun.

TRUE
FALSE

5 Which of the following is not a stellar source?

Betelgeuse
Mercury
Regulus
Mira
Sirius B
Vega

6 True or False, Alpha Lyrae is a known (SIMBAD) X-ray source.

TRUE
FALSE

7 Which of the following is not a spectral class F star?

Polaris
Alrakis
Bellatrix
Procyon
Canopus
Wezen

8 The standard condition for temperature and pressure is likely to be which of the following?

Vega
1 atm
0 K
273.15 K
1 isobar

9 Complete the text:

A sample of 23 stars contained objects with (1) strong Be and strong B, (2) weak Be and strong

, (3) strong

and weak B, and (4) weak

and

.

10 Which of the following is not a spectral class G star?

Alpha Centauri A
Capella
Sun
Procyon
Tau Ceti
Kepler-22

11 True or False, The character, sign, or symbol ⊚, ⨀, ⦿, or ⊙ may represent Saturn.

TRUE
FALSE

12 Complete the text:

Match up the stellar image with the radiation astronomy:
meteor astronomy - A
neutrino astronomy - B
gamma-ray astronomy - C
X-ray astronomy - D
ultraviolet astronomy - E
visual astronomy - F
violet astronomy - G
blue astronomy - H
yellow astronomy - I
red astronomy - J
orange astronomy - K
infrared astronomy - L
radio astronomy - M
File:280557main oblate purplesun HI.jpg

.
File:Wfullb.jpg

.

.

.
File:Sun in X-rays Recovered.png

.
File:Sun5GHz.jpg

.

.
File:Neusun1 superk1.jpg

.

.

.
File:Latest nsoHe.gif

.
File:Blueberrysun friedman 1296.jpg

.
File:Gamma sun1.jpg

.

13 Which of the following is not a spectral class K star?

Alpha Centauri B
Epsilon Eridani
Arcturus
Aldebaran
Tau Ceti
Algol B

14 Any object forming on a dynamical timescale, by gravitational instability, is a

15 Complete the text:

Match up the approximate luminosity class with each of the stellar class possibilities below:
0 - A
I - B
II - C
III - D
IV - E
V - F
VI - G
VII - H
giants

.
supergiants

.
white dwarfs

.
main-sequence

.
bright giants

.
subdwarfs

.
subgiants

hypergiants

.

16 Which of the following is not a spectral class O star?

Alpha Camelopardalis
Tau Canis Majoris
Plaskett's star
Sirius A
Pistol Star
Zeta Puppis

17 Complete the text:

Match up the effective temperature with its spectral class:
O - A
B - B
A - C
F - D
G - E
K - F
M - G
L - H
T - I
Y - J
7,000 K

.
2,000 K

15,000 K

.
4,000 K

.
400 K

9,000 K

.
3,000 K

.
5,500 K

45,000 K

.
1,000 K

18 Which of the following is not a spectral class M star?

Betelgeuse
Antares
Proxima Centauri
Barnard's star
VY Canis Majoris
Algol B

19 Complete the text:

Match up the white dwarf classification with its distinctive characteristic:
DA - A
DB - B
DC - C
DO - D
DQ - E
DX - F
DZ - G
a helium-rich atmosphere, indicated He II spectral lines

.
a helium-rich atmosphere, indicated He I spectral lines

.
spectral lines are insufficiently clear to classify

.
no strong spectral lines

.
a metal-rich atmosphere

.
a carbon-rich atmosphere

a hydrogen-rich atmosphere

.

20 True or False, Regulus is a known (SIMBAD) X-ray source.

TRUE
FALSE

21 Which of the following elements have or appear to have lines occurring in the spectra of Vega?

hydrogen
helium
lithium
beryllium
boron
carbon
nitrogen
oxygen
fluorine
neon

22 True or False, Molecular lines for H2O in the spectra for Vega are likely from water vapor in the Earth's atmosphere or the accretion disk around Vega.

TRUE
FALSE

23 The heavier element lines that occur in the spectrum of Vega are

lanthanum (La)
calcium (Ca)
uranium (U)
titanium (Ti)
silicon (Si)
iron (Fe)

24 True or False, From only its X-ray properties, Vega is a Sirius-like X-ray source.

TRUE
FALSE

25 Complete the text:

Match up the star with the constellation:
Capella - A
Sirius - B
Deneb - C
Anser - D
Altair - E
Vega - F
Vulpecula

.
Canis Major

.
Lyra

.
Cygnus

.
Aquila

Auriga

.

26 Yes or No, Vega and BD+38 3238D may be a binary system.

Yes
No


Hypotheses

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Main resource: Hypotheses
  1. Vega is an X-ray spectral class star like the Sun.

See also

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[edit | edit source]

{{Radiation astronomy resources}}

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