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- IRC_+10216 abstract "IRC +10216 or CW Leonis is a well-studied carbon star that is embedded in a thick dust envelope. It was first discovered in 1969 by a group of astronomers led by Eric Becklin, based upon infrared observations made with the 62 inches (1.6 m) Caltech Infrared Telescope at Mount Wilson Observatory. Its energy is emitted mostly at infrared wavelengths. At a wavelength of 5 μm, it was found to have the highest flux of any object outside the Solar System.CW Leonis is believed to be in a late stage of its life, blowing off its own sooty atmosphere to form a white dwarf in a distant future. Based upon isotope ratios of magnesium, the initial mass of this star has been constrained to lie between 3–5 solar masses. The mass of the star's core, and the final mass of the star once it becomes a white dwarf, is about 0.7–0.9 solar masses. It has a nominal luminosity of 11,300 times the Sun. This varies over the course of a 649 day pulsation cycle, ranging from a minimum of about 6,250 times the Sun's luminosity up to a peak of around 15,800 times.The carbon-rich gaseous envelope surrounding this star is at least 69,000 years old and the star is losing about (1–4) × 10−5 solar masses per year. The extended envelope contains at least 1.4 solar masses of material. Speckle observations from 1999 show a complex structure to this dust envelope, including partial arcs and unfinished shells. This clumpiness may be caused by a magnetic cycle in the star that is comparable to the solar cycle in the Sun and results in periodic increases in mass loss. Various chemical elements and about 50 molecules have been detected in the outflows from CW Leonis, among others nitrogen, oxygen and water, silicon and iron.If the distance to this star is assumed to be at the lower end of the estimate range, 120 pc, then the astrosphere surrounding the star spans a radius of about 84,000 AU. The star and its surrounding envelope are advancing at a velocity of more than 91 km/s through the surrounding interstellar medium. It is moving with a space velocity of [U, V, W] = [21.6 ± 3.9, 12.6 ± 3.5, 1.8 ± 3.3] km s−1.".
- IRC_+10216 wikiPageExternalLink ap010716.html.
- IRC_+10216 wikiPageExternalLink cw-leonis.shtml.
- IRC_+10216 wikiPageExternalLink sim-id.pl?protocol=html&Ident=IRC+%2B10216.
- IRC_+10216 wikiPageExternalLink irc10216.html.
- IRC_+10216 wikiPageID "5810488".
- IRC_+10216 wikiPageRevisionID "595648184".
- IRC_+10216 appmag "1.19".
- IRC_+10216 appmag "10.96".
- IRC_+10216 appmag "4.04".
- IRC_+10216 appmag "7.34".
- IRC_+10216 appmag1Passband "R".
- IRC_+10216 appmag2Passband "J".
- IRC_+10216 appmag3Passband "H".
- IRC_+10216 appmag4Passband "K".
- IRC_+10216 class "C".
- IRC_+10216 constell Leo_(constellation).
- IRC_+10216 distLy "390".
- IRC_+10216 distPc "120".
- IRC_+10216 epoch "J2000".
- IRC_+10216 hasPhotoCollection IRC_+10216.
- IRC_+10216 luminosity "11300".
- IRC_+10216 mass "0.8".
- IRC_+10216 radius "700".
- IRC_+10216 temperature "2200".
- IRC_+10216 subject Category:C-type_stars.
- IRC_+10216 subject Category:Leo_(constellation).
- IRC_+10216 type CelestialBody.
- IRC_+10216 type Star.
- IRC_+10216 type PhysicalBody.
- IRC_+10216 comment "IRC +10216 or CW Leonis is a well-studied carbon star that is embedded in a thick dust envelope. It was first discovered in 1969 by a group of astronomers led by Eric Becklin, based upon infrared observations made with the 62 inches (1.6 m) Caltech Infrared Telescope at Mount Wilson Observatory. Its energy is emitted mostly at infrared wavelengths.".
- IRC_+10216 label "CW Leonis".
- IRC_+10216 label "IRC +10216".
- IRC_+10216 label "IRC +10216".
- IRC_+10216 label "IRC +10216".
- IRC_+10216 label "IRC +10216".
- IRC_+10216 label "IRC +10216".
- IRC_+10216 sameAs CW_Leonis.
- IRC_+10216 sameAs IRC_+10216.
- IRC_+10216 sameAs IRC_+10216.
- IRC_+10216 sameAs m.0f6d80.
- IRC_+10216 sameAs Q2975210.
- IRC_+10216 sameAs Q2975210.
- IRC_+10216 wasDerivedFrom IRC_+10216?oldid=595648184.
- IRC_+10216 isPrimaryTopicOf IRC_+10216.
- IRC_+10216 name "CW Leonis".