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.

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

To improve your score, read and study the lecture, the links contained within, listed under See also, External links, and in the template. This should give you adequate background to get 100 %.

As a "learning by doing" resource, this quiz helps you to assess your knowledge and understanding of the information, and it is a quiz you may take over and over as a learning resource to improve your knowledge, understanding, test-taking skills, and your score.

Suggestion: Have the lecture available in a separate window.

To master the information and use only your memory while taking the quiz, try rewriting the information from more familiar points of view, or be creative with association.

Enjoy learning by doing!

Quiz
{Yes or No, BH Centauri is an overcontact system. + Yes - No
 * type=""}

{Which of the following is or may be an original binary companion to the Sun? - the planet Mercury + Ouranus - Saturn - Jupiter - Earth - Nemesis
 * type=""}

{True or False, Romulus and Remus are the original names for the Sun-Ouranus binary. - TRUE + FALSE
 * type=""}

{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 { D (i) }. { A (i) }. { F (i) }. { C (i) }. { E (i) } { B (i) }.
 * type="{}"}

{True or False, RS Canum Venaticorum variables are close binary stars having active chromospheres which can cause large stellar spots. + TRUE - FALSE
 * type=""}

{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 { J (i) }. same line of sight { D (i) }. wobbling around a point { G (i) }. no close companion with an orbital period of ten days or less { B (i) }. resolved binary using visual astronomy { F (i) }. periodic variation in radial velocity { H (i) }. each component fills the other's area of gravitational pull { L (i) }. F8V through K2V { C (i) }. unstable mass transfer from one to the other { M (i) }. mutual eclipses { I (i) }. two orbiting around each other { E (i) } no stellar companion { A (i) }. one component does not exceed the gravitational pull area { K (i) }.
 * type="{}"}

{Complete the text: Solar-type stars are { main-sequence|MS (i) } stars with a B-V color between { 0.48 (i) } and 0.80.
 * type="{}"}

{True or False, Saturn may have been a pole star for the Earth and the remnants of a binary with the Sun. + TRUE - FALSE
 * type=""}

{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 { D (i) }. Plaskett's Star (HR 2422) { B (i) }. Betelgeuse { G (i) } W Ursae Majoris { F (i) }. Beta Lyrae { C (i) }. V1010 Ophiuchi { E (i) } object is confirmed to be co-moving { A (i) }. Sun { H (i) }.
 * type="{}"}

{True or False, Most of the planetary orbital poles are clustered around the Sun's rotational pole. - TRUE + FALSE
 * type=""}

{True or False, The Sun-Jupiter system may serve to establish an upper limit for interstellar cometary capture. + TRUE - FALSE
 * type=""}

{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
 * type=""}

{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
 * type=""}

{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
 * type=""}

{True or False, Vega and BD+38 3238D may be a binary system. + TRUE - FALSE
 * type=""}

{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
 * type="[]"}

Hypotheses

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