# Stars/Sun/Solar binary/Quiz

< Stars‎ | Sun‎ | Solar binary

Solar binary is a lecture and an article for an original research project focussed on a possible origin of the solar system. It is part of the astronomy course on the principles of radiation astronomy.

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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, The Roman god Caelus was a primal god like the Greek god Uranus.

 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 True or False, Alpha Centauri A and C are binary solar analogs.

 TRUE FALSE

8 Complete the text:

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

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

 TRUE FALSE

10 Phenomena associated with a solar analog star are

 no stellar companion temperature within 500 K solar metallicity of 50-200% solar orbital period of greater than 11 d K0V permitted K1V permitted

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

 TRUE FALSE

12 A star with an effective surface temperature within 50 K solar is called a solar

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

 TRUE FALSE

14 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

15 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

16 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

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

 TRUE FALSE

18 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

1. Questions can be used to pin down the original second star in the solar binary.