Stars/Binaries/Quiz

Binary stars is a lecture for an original research project focused on a possible origin of the binary star systems. It is an offering of the radiation astronomy department.

File:Aj424241f8 lr.jpg

This is a Keck adaptive optics image of TYC 4110-01037-1 in K′. Credit: Keith Matthews at the Keck Observatory.

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Quiz

Point added for a correct answer:
Points for an incorrect answer:
Ignore the questions' coefficients:

1 Yes or No, BH Centauri is an overcontact system.

	Yes
	No

2 Which of the following is or may be an original binary companion to the Sun?

	the planet Mercury
	Ouranus
	Saturn
	Jupiter
	Earth
	Nemesis

3 True or False, Romulus and Remus are the original names for the Sun-Ouranus binary.

	TRUE
	FALSE

4 Complete the text:

Match up the observation with the binary star:

Sirius A and B - A

Algol A and B - B

Albireo - C

WISE J1049-5319 - D

Mizar A - E

Minkowski 2-9 - F

File:New-binary-star-third-closest-to-sun-3.jpg .

.

.

.

File:MizarA npoi big.gif

.

5 True or False, RS Canum Venaticorum variables are close binary stars having active chromospheres which can cause large stellar spots.

	TRUE
	FALSE

6 Complete the text:

Match up the type of star with each of the characteristics below:

solar twin - A

solar analog - B

solar type - C

double star - D

binary - E

visual binary - F

astrometric binary - G

spectroscopic binary - H

eclipsing binary - I

detached binary - J

semidetached binary - K

contact binary - L

common-envelope binary - M

area of gravitational pull exceeds the other component .

same line of sight .

wobbling around a point .

no close companion with an orbital period of ten days or less .

resolved binary using visual astronomy .

periodic variation in radial velocity .

each component fills the other's area of gravitational pull .

F8V through K2V .

unstable mass transfer from one to the other .

mutual eclipses .

two orbiting around each other

no stellar companion .

one component does not exceed the gravitational pull area .

7 Complete the text:

Solar-type stars are stars with a B-V color between and 0.80.

8 True or False, Saturn may have been a pole star for the Earth and the remnants of a binary with the Sun.

	TRUE
	FALSE

9 Complete the text:

Match up the likely type of star fission with each of the possibilities below:

a triple-component stellar multiple - A

massive star fission - B

semidetached binary - C

a separating close contact binary - D

ZAMS system - E

tight, circular orbit, impossible to tell eclipses - F

lobate star - G

coronal mass ejection - H

BH Centauri .

Plaskett's Star (HR 2422) .

Betelgeuse

W Ursae Majoris .

Beta Lyrae .

V1010 Ophiuchi

object is confirmed to be co-moving .

Sun .

10 True or False, Most of the planetary orbital poles are clustered around the Sun's rotational pole.

	TRUE
	FALSE

11 True or False, The Sun-Jupiter system may serve to establish an upper limit for interstellar cometary capture.

	TRUE
	FALSE

12 Which of the following is likely to apply to a solar binary?

	a high relative velocity between the solar system and the cometary medium of a passage through a molecular cloud
	none of the captured bodies may localize in the Oort cloud
	none of the captured bodies localize near the Sun
	some captured bodies may localize near Jupiter
	the Jupiter system may be a control group

13 True or False, 2M1207b is a Jupiter-like planet that orbits the brown dwarf (2M1207) at a distance nearly twice as far as Neptune is from the Sun.

	TRUE
	FALSE

14 Which of the following may not be able to slow down an object entering the heliosphere at 20 km/s?

	gravity
	electrostatic repulsion
	the charge on the surface of the Sun
	a comparable charge on the incoming object
	electromagnetics
	strong forces

15 True or False, Vega and BD+38 3238D may be a binary system.

	TRUE
	FALSE

16 Which of the following are characteristics of a solar-like binary?

	Teff ≤ 6000 K
	break up of a triple-component stellar system
	none of the captured bodies localize near the Sun
	some captured bodies may localize near Jupiter
	the Jupiter system may be a control group

Hypotheses

Main resource: Hypotheses

1. Many more stellar binaries result from star fission than gravitational capture or simultaneous formation.

See also

• Astronomy/Quiz
• Green astronomy/Quiz
• Planetary science/Quiz
• Radiation astrochemistry/Quiz
• Radiation astrogeography/Quiz
• Radiation astrohistory/Quiz
• Radiation astronomy/Quiz
• Stars/Quiz

External links

• International Astronomical Union
• NASA/IPAC Extragalactic Database - NED
• NASA's National Space Science Data Center
• The SAO/NASA Astrophysics Data System
• SDSS Quick Look tool: SkyServer
• SIMBAD Astronomical Database
• SIMBAD Web interface, Harvard alternate
• Spacecraft Query at NASA
• Universal coordinate converter

{{Radiation astronomy resources}}