Harlow Shapley tau txiav txim siab li cas ntawm Milky Way?
Harlow Shapley tau txiav txim siab li cas ntawm Milky Way?

Video: Harlow Shapley tau txiav txim siab li cas ntawm Milky Way?

Video: Harlow Shapley tau txiav txim siab li cas ntawm Milky Way?
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Harlow Shapley qhov kev txiav txim siab ntawm qhov loj ntawm Galaxy.

Shapley pom tias globular pawg muaj RR Lyrae hloov pauv. Nws ntsuas qhov kev ncua deb mus rau globular pawg. Lawv tau faib nyob rau hauv ib tug spherically symmetric faib nyob rau hauv ib tug taw tes nyob rau hauv lub dav hlau ntawm lub Milky Way , tab sis qee qhov deb ntawm lub hnub

Ib yam li ntawd, nws tau nug, Harlow Shapley tau txiav txim siab li cas ntawm lub galaxy?

Shapley siv RR Lyrae hnub qub rau kwv yees qhov loj ntawm Milky Way Galaxy thiab lub hnub txoj hauj lwm nyob rau hauv nws los ntawm kev siv parallax. Xyoo 1953 nws tau tshaj tawm nws txoj kev xav "kua dej siv", tam sim no hu ua lub tswv yim ntawm thaj chaw nyob.

Ib yam li ntawd, qhov loj ntawm Milky Way tau txiav txim siab li cas? Ntsuas qhov Milky Way . Yog tias koj saib hauv phau ntawv astronomy, koj yuav pom qhov chaw ntawm daim duab Milky Way Galaxy nrog qhov ntev : lub disk ntawm peb galaxy yog hais txog lub disk yog hais txog 40,000 parsecs = 40 kilo-parsecs = 40 kpc thoob plaws, thiab lub hnub yog li ntawm 8, 000 parcsec = 8 kpc los ntawm qhov chaw.

Tsis tas li ntawd, Shapley tau txiav txim siab li cas Milky Ways loj?

Shapley raws li nws lub tswv yim ntawm lub qhov loj ntawm Milky Way ntawm kev soj ntsuam ntawm globular hnub qub pawg. Shapley xav tias tag nrho cov globular pawg yog roughly tib yam qhov loj , thiab yog li siv lawv qhov pom tseeb qhov loj saum ntuj los txiav txim lawv qhov kev ncua deb (qhov deb dua qhov khoom yog, qhov me dua nws yuav tshwm sim rau peb).

Harlow Shapley ua dab tsi?

Harlow Shapley . Harlow Shapley , (yug Kaum Ib Hlis 2, 1885, Nashville, Missouri, Tebchaws Asmeskas-tuag Lub Kaum Hli 20, 1972, Boulder, Colorado), American astronomer uas tau txiav txim siab tias lub hnub nyob ze ntawm lub hauv paus dav hlau ntawm Milky Way Galaxy thiab tsis nyob hauv nruab nrab tab sis qee qhov 30,000 lub teeb xyoo deb.

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