Sentences with phrase «star cen»
To explore whether neutron stars power jets at low accretion rates (LX ≲ 1036 erg / s), we investigate the radio and X-ray properties of three accreting millisecond X-ray pulsars (IGR J17511 - 3057, SAX J1808.4 - 3658 and IGR J00291 +5934) during their outbursts in 2015, and of the non-pulsing neutron star Cen X-4 in quiescence (2015) and in outburst (1979).
http://www.faulkes-telescope.com/ Not exact matches
© Torben Krogh & Mogens Winther, (Amtsgymnasiet and EUC Syd Gallery, student photo used with permission) Alp Cen B is an orange - red dwarf star, like Epsilon Eridani at left center of meteor.
A third companion — Proxima Centauri (or Proxima or α Cen C)-- is much further away than the distance between stars A and B, but is still gravitationally associated with the AB system.
The Alpha Cen system is formed by two Sun - like stars orbiting each other in approximately 80 years.
Listed as V645 Cen in the General Catalogue of Variable Stars (G.C.V.S.) Version 4.2, this UV Ceti - type flare star can unexpectedly brighten rapidly by as much as 0.6 magnitudes at visual wavelengths, then fade after only a few minutes.
Alpha Centauri is a multiple - star system, with its two main stars being Alpha Centauri A (α Cen A) and Alpha Centauri B (α Cen B), usually defined to identify them as the different components of the binary α Cen AB.
Proxima Centauri (α Cen C) is at the slightly smaller distance of 4.24 light - years (1.30 pc) from the Sun, making it the closest star to the Sun, even though it is not visible to the naked eye.
Proxima Centauri would appear to the naked eye as a separate star from α Cen AB if it were bright enough to be seen without a telescope.
Together, the bright visible components of the binary star system are called Alpha Centauri AB (α Cen AB).
Together, the three components make a triple star system, referred to by double - star observers as the triple star (or multiple star), α Cen AB - C.
Alpha Centauri (α Centauri, abbreviated Alf Cen, α Cen) is the closest star system to the Solar System, being 4.37 light - years (1.34 pc) from the Sun.
Project Blue's mission concept is based on the published work of Dr. Eduardo Bendek and Dr. Rus Belikov to image planets in the habitable zone of Alpha Cen A & B using a highly optimized coronagraphic telescope devoted to image the HZ of both stars.
However, in comparison with the solar case, the FIR photosphere of alpha Cen A appears marginally cooler, Tmin = T160mu = 3920 + / -375 K. Beyond the minimum near 160mu, the brightness temperatures increase and this radiation likely originates in warmer regions of the chromosphere of alpha Cen A. To the best of our knowledge this is the first time a temperature minimum has been directly measured on a main - sequence star other than the Sun.