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Companions x Astronomical Instrumentation, Methods, and Techniques x clear all

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Measurement of the Rossiter–McLaughlin Effect in the Transiting Exoplanetary System TrES-1

Norio Narita, Keigo Enya, Bun’ei Sato, Yasuhiro Ohta, Joshua N. Winn, Yasushi Suto, Atsushi Taruya, Edwin L. Turner, Wako Aoki, Motohide Tamura, Toru Yamada and Yuzuru Yoshii.

in Publications of the Astronomical Society of Japan

August 2007; p ublished online August 2007 .

Journal Article. Subjects: Astronomical Instrumentation, Methods, and Techniques; Stars. 5439 words.

We report a measurement of the Rossiter–McLaughlin effect in the transiting extrasolar planetary system TrES-1, via simultaneous spectroscopic and photometric observations with the Subaru...

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Observations and Orbital Analysis of the High-Amplitude Delta Scuti Star SZ Lyncis: The Unusual Orbital Precession

Li Lin-Jia and Qian Sheng-Bang.

in Publications of the Astronomical Society of Japan

December 2013; p ublished online December 2013 .

Journal Article. Subjects: Astronomical Instrumentation, Methods, and Techniques; Stars. 0 words.

We determined forty-two new times of light maximum from our photometry observations and WASP project, and collected all times of light maximum observed between 1961 and 2013 in order to...

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comes

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 16 words.

The fainter component of a double star; pl. comites. The word is Latin for ‘companion’.

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Pup, the

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 16 words.

Popular name for Sirius B, the white-dwarf companion of *Sirius (the Dog Star).

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X-ray binary

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 106 words.

An X-ray emitting binary system consisting of a neutron star (or in a few cases a black hole) and a normal stellar companion. They are divided into two groups according to the mass of the...

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binary pulsar

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 235 words.

A pulsar in orbit with another star. The existence of a companion star is revealed by a cyclic change in the pulse period as the two stars orbit each other. Over 250 binary pulsars were...

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Zubenelgenubi

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 27 words.

The star Alpha Librae, magnitude 2.7. It is an A3 giant or subgiant 75 l.y. away. It has a wide companion of magnitude 5.2, an F3 dwarf....

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reflection effect

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 40 words.

The reflection (more strictly, the absorption, scattering, and re-emission) of the light from one star by a close companion. The effect is seen in many close binaries in which the cooler,...

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Musca

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 43 words.

A small constellation of the southern sky, representing a fly. Its brightest star is Alpha Muscae, magnitude 2.7. Theta Muscae is a double star, magnitudes 5.6 and 7.6, the companion being...

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Regulus

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 31 words.

The star Alpha Leonis, magnitude 1.35, the faintest of the first-magnitude stars. It is a B7 dwarf or B8 subdwarf 79 l.y. away, and has a wide companion of magnitude 8.1....

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Adhara

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 23 words.

The star Epsilon Canis Majoris, magnitude 1.5. It is a B1.5 or B2 giant, 405 l.y. away, with a companion of magnitude 7.2....

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Dubhe

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 55 words.

The star Alpha Ursae Majoris, magnitude 1.8. It is a G9 giant lying 123 l.y. away. It is a close double star, with an A8 dwarf companion of magnitude 4.8 that orbits it in a period of 45...

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Alnitak

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 52 words.

The star Zeta Orionis, one of the three stars of the belt of Orion. It is a supergiant of type O9.5, magnitude 1.9, with a close companion of magnitude 3.7, a B0 giant that orbits it every...

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Rigel

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 41 words.

The star Beta Orionis, magnitude 0.13, the seventh-brightest star in the sky. It is a B8 supergiant 863 l.y. away and has a luminosity 40 000 times the Sun's. It has a companion of...

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van Maanen’s Star

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 68 words.

A white dwarf of type DZ 13.9 l.y. away in Pisces, the nearest white dwarf to the Sun after the companions of Sirius and Procyon; also known as Wolf 28 and GJ35. It appears of mag. 12.4 and...

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Herculina

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 63 words.

Asteroid 532, discovered in 1904 by Max *Wolf. Observations of a stellar occultation by Herculina in 1978 indicate the presence of a companion about 50 km wide and 1000 km away. Herculina...

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X-ray pulsar

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 84 words.

A regularly variable X-ray binary, in which the pulsation is associated with the spin period of the compact companion, a magnetized neutron star; abbr. XP. Periods range from a few seconds...

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Procyon

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 73 words.

The star Alpha Canis Minoris, magnitude 0.37, the eighth-brightest star in the sky. It is an F5 subgiant or dwarf and lies 11.5 l.y. away, among the nearest stars to us. Procyon has a white...

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density wave

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 79 words.

A wave-like concentration in the density of interstellar material and stars that propagates through the disk of a spiral galaxy, giving rise to its spiral structure. The compression of the...

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Hadar

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 62 words.

The star Beta Centauri, the 11th-brightest star in the sky. It is a B1 giant of magnitude 0.6, but is a variable of the Beta Cephei variety with an amplitude of only about 0.05 mag. every...

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