horizontal branch

A horizontal strip on the Hertzsprung–Russell diagram of a globular cluster, to the left of the red-giant branch. It consists of low-mass stars that have lost mass during the red-giant phase; they all have absolute magnitudes of about the same value. Where the instability strip associated with pulsating variables crosses the horizontal branch, the stars are RR Lyrae stars; in a conventional H-R diagram of nonvariable stars, this appears as a gap in the horizontal branch.

horizontal branch

[‚här·ə′zänt·əl ′branch] (astronomy) A region in the Hertzsprung-Russell diagram of a typical globular cluster that extends in the blue direction from the giant branch at an absolute bolometric magnitude of 0.3 and consists of stars that are burning helium in their cores and hydrogen in their surrounding envelopes.

horizontal branch

horizontal branch A branch drain with a horizontal extension from a waste, soil, or vent stack, or from a building drain, which receives the discharge from a single fixture or a group of fixtures and conducts it to the soil or waste stack or to the building drain.

单词	horizontal branch
释义	horizontal branch horizontal branch A horizontal strip on the Hertzsprung–Russell diagram of a globular cluster, to the left of the red-giant branch. It consists of low-mass stars that have lost mass during the red-giant phase; they all have absolute magnitudes of about the same value. Where the instability strip associated with pulsating variables crosses the horizontal branch, the stars are RR Lyrae stars; in a conventional H-R diagram of nonvariable stars, this appears as a gap in the horizontal branch. horizontal branch [‚här·ə′zänt·əl ′branch] (astronomy) A region in the Hertzsprung-Russell diagram of a typical globular cluster that extends in the blue direction from the giant branch at an absolute bolometric magnitude of 0.3 and consists of stars that are burning helium in their cores and hydrogen in their surrounding envelopes. horizontal branch horizontal branch A branch drain with a horizontal extension from a waste, soil, or vent stack, or from a building drain, which receives the discharge from a single fixture or a group of fixtures and conducts it to the soil or waste stack or to the building drain.
随便看	satiation satiation factor satiations satib sati (buddhism) satic saticon satie satiec satie, erik satie erik alfred leslie satie, erik (alfred leslie) satie, erik alfred leslie satiety satiety center satiety centre satiety index satigrel satiim satilite satilla river satillite satin satin anodised aluminium satin anodized aluminum