See Figure 12-10 in the Text $\zeta$ Canis Majoris Has an Absolute Magnitude of -2

question 9

Multiple Choice

See Figure 12-10 in the text. The star $\zeta$ Canis Majoris has an absolute magnitude of -2.4 and a spectral luminosity class of B2 V. The star $\gamma$ Crucis has a spectral class of M4 and the same absolute magnitude as Canis Majoris. The spectral luminosity class of Crucis is probably

• A) M-type white dwarf.
• B) M4 II.
• C) M4 Ia.
• D) M4 V.

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Definitions:

Alcohol

Organic molecules featuring one or more -OH groups bonded to a saturated carbon; common examples include ethanol and methanol.

Line-Angle Formula

A simplified diagrammatic method for representing chemical structures where lines represent chemical bonds and vertexes or line ends represent carbon atoms.

Line-Angle Formula

A simplified drawing that represents the structure of a molecule in organic chemistry using lines to represent chemical bonds and angles to indicate bond directions.

Cyclobutanol

A four-membered cyclic alcohol characterized by a ring containing three carbon atoms and one oxygen atom in the ring, bonded to a hydroxyl group.