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    brown dwarf tagged posts

    Very Rare Discovery: Failed Star Orbits a Dead Star every 71 minutes

    June 11, 2017, Categories  Astronomy/Space

    K2 lightcurve (black jagged curve) folded about a period of 71.23 minutes. The red curve represents a simple geometrical model with a 5-minute long total eclipse and a 9% contribution to emulate an illumination effect on the companion star. The blue curve is the fit to the model based on the length of the K2 observations. Credit: Bishop's University

    1. K2 lightcurve (black jagged curve) folded about a period of 71.23 minutes. The red curve represents a simple geometrical model with a 5-minute long total eclipse and a 9% contribution to emulate an illumination effect on the companion star. The blue curve is the fit to the model based on the length of the K2 observations. 2. The final fate of WD1202 as a cataclysmic variable. The brown dwarf overflows its tear-drop-shaped Roche lobe and loses mass to the compact white dwarf accretor An accretion disk of hot hydrogen gas surrounds the white dwarf. Credit: Bishop’s University

    An international team using data from the rejuvenated Kepler space telescope have discovered a rare gem: A binary system consisting of a failed star, also known as a brown dwarf, and the remnant of a dead star known ...

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    Surprise! When a Brown Dwarf is actually a Planetary Mass Object

    May 10, 2017, Categories  Astronomy/Space

    This is an artist's conception of SIMP J013656.5+093347, or SIMP0136 for short, which the research team determined is a planetary like member of a 200-million-year-old group of stars called Carina-Near. Credit: Image is courtesy of NASA/JPL, slightly modified by Jonathan Gagné.

    This is an artist’s conception of SIMP J013656.5+093347, or SIMP0136 for short, which the research team determined is a planetary like member of a 200-million-year-old group of stars called Carina-Near. Credit: Image is courtesy of NASA/JPL, slightly modified by Jonathan Gagné.

    Sometimes a brown dwarf is actually a planet – or planet-like anyway. A team led by Carnegie’s Jonathan Gagné, and including researchers from the Institute for Research on Exoplanets (iREx) at Université de Montréal, the American Museum of Natural History, and University of California San Diego, discovered that what astronomers had previously thought was one of the closest brown dwarfs to our own Sun is in fact a planetary mass object.

    Smaller than stars, but bigger than giant planets, brown dwarfs are too small...

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    NASA Space Telescopes Pinpoint elusive Brown Dwarf

    November 16, 2016, Categories  Astronomy/Space

    This illustration depicts a newly discovered brown dwarf, an object that weighs in somewhere between our solar system's most massive planet (Jupiter) and the least-massive known star. Credit: NASA/JPL-Caltech

    This illustration depicts a newly discovered brown dwarf, an object that weighs in somewhere between our solar system’s most massive planet (Jupiter) and the least-massive known star. Credit: NASA/JPL-Caltech

    In a first-of-its-kind collaboration, NASA’s Spitzer and Swift space telescopes joined forces to observe a microlensing event, when a distant star brightens due to the gravitational field of at least one foreground cosmic object. This technique is useful for finding low-mass bodies orbiting stars, such as planets. In this case, the observations revealed a brown dwarf.

    Brown dwarfs are thought to be the missing link between planets and stars, with masses up to 80 times that of Jupiter...

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    1st Brown Dwarf-mass object found to reside in the Inner hole of a Debris Disk

    August 27, 2016, Categories  Astronomy/Space

    Astronomers find a brown dwarf companion to a nearby debris disk host star

    Collapsed datacubes showing HR 2562B in each of the four modes observed with GPI and reduced using KLIP. The K2 image is from February 2016 and demonstrates two possible solutions for the inner edge of the disk (38 and 75 AU with dashed and dotted-dashed lines respectively) assuming inclination of 78 degrees and position angle of 120 degrees. Credit: Konopacky et al., 2016.

    Astronomers have detected a brown dwarf orbiting HR 2562 – a nearby star known to host a debris disk. HR 2562, 110 light years away, is an F5V star, about 30% more massive than the sun. It has a debris disk—a circumstellar belt of dust and planetesimals left over from planetary formation. The disk around HR 2562, spans from 38 to 75 AU away from the host star.

    In early 2016, a team of researchers, led by Quinn Konop...

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