Physics

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Five stars and their spectral types are given below. Which star would have the lowest surface ... Started by ssal	1 Replies 99 Views	Jul 27, 2018 by sierramartinez
The spectral types for each of five stars are given. Which star in would have the greatest surface ... Started by nummyann	1 Replies 95 Views	Jul 27, 2018 by kjo;oj
The star HR 4621 has an apparent magnitude of 2.6 and an absolute magnitude of -0.3 . This star is ... Started by corkyiscool3328	3 Replies 90 Views	Jul 27, 2018 by robbielu01
A star's absolute magnitude depends only on the star's a. distance and diameter. b. temperature ... Started by Sportsfan2111	1 Replies 84 Views	Jul 27, 2018 by Awesome
The absorption lines in the infrared portion of the spectrum of a star that are produced by hydrogen ... Started by sheilaspns	1 Replies 108 Views	Jul 27, 2018 by aburgess
The absorption lines in the ultraviolet portion of the spectrum of a star that are produced by ... Started by shenderson6	1 Replies 116 Views	Jul 27, 2018 by briseldagonzales
The correct sequence of spectral type letters from hot on the left to cool on the right is a. M, ... Started by natalie2426	3 Replies 93 Views	Jul 27, 2018 by Sammyo
The spectra of the coolest stars contain strong absorption features (or lines) of a. TiO ... Started by 2125004343	1 Replies 113 Views	Jul 27, 2018 by choc0chan
Compared with the spectral lines in the solar spectrum, lines in a supergiant spectrum are a. ... Started by colton	1 Replies 173 Views	Jul 27, 2018 by Jmfn03
Vega is an A0 V star. Based on this information, which of the following are true? I. Vega has a ... Started by WhattoUnderstand	1 Replies 89 Views	Jul 27, 2018 by hollysheppard095
Groombridge 34 is an M1 V star. Based on this information, which of the following are true? I. ... Started by j.rubin	3 Replies 79 Views	Jul 27, 2018 by shaikhs
Spectroscopic and eclipse duration observations of an eclipsing binary star can enable astronomers ... Started by KimWrice	1 Replies 115 Views	Jul 27, 2018 by Alyson.hiatt@yahoo.com
A pair of stars orbit around one another in an elliptical orbit with a semi-major axis, a, of 1 AU ... Started by Marty	1 Replies 110 Views	Jul 27, 2018 by phuda
Doppler-shift observations of a spectroscopic binary star can enable astronomers to calculate ... Started by joe	1 Replies 126 Views	Jul 27, 2018 by akemokai
Binary (double) stars can be detected by a. being seen as two separate stars with a telescope. ... Started by ereecah	3 Replies 106 Views	Jul 27, 2018 by kishoreddi
The mass of a visual binary pair of stars can be obtained from a. the time in years for them to ... Started by rayancarla1	1 Replies 76 Views	Jul 27, 2018 by allisonblackmore
The size of a neutron star is a. about the same as that of our Solar System. b. about the same ... Started by EAugust	1 Replies 74 Views	Jul 27, 2018 by batool
On the Moon, no air is present. As such, which of the following waves cannot be detected. a. ... Started by renzo156	1 Replies 46 Views	Jul 27, 2018 by olivia_paige29
The best sample of the true numbers of the different types of stars consists of a. stars that ... Started by rosent76	3 Replies 107 Views	Jul 27, 2018 by juiceman1987
The density of a neutron star is a. about the same as that of a white dwarf. b. about the same ... Started by james0929	1 Replies 98 Views	Jul 27, 2018 by sierramartinez
__________ in Earth's atmosphere absorbs most ultraviolet radiation coming from the Sun. a. ... Started by Mr.Thesaxman	1 Replies 97 Views	Jul 27, 2018 by aadams68
Which one of the methods below enables astronomers to measure the distance of a star near the Sun in ... Started by sdfghj	1 Replies 90 Views	Jul 27, 2018 by smrtceo
Observations from the Compton Gamma Ray Observatory showed that gamma-ray bursters were located ... Started by vicotolentino	3 Replies 144 Views	Jul 27, 2018 by Natalie4ever
__________ in Earth's atmosphere absorbs most microwave and infrared radiation coming from outside ... Started by krzymel	1 Replies 126 Views	Jul 27, 2018 by Ptupou85
A parsec is I. a unit of length used in astronomy II. 2.06 105 AU III. the distance to an imaginary ... Started by tichca	1 Replies 63 Views	Jul 27, 2018 by mohan