Eric Mamajek

@EricMamajek

Astronomer, dad, stars, (exo)planets. Statements and opinions posted here are my own. I don't respond to Twitter DM.

Sector 001
Vrijeme pridruživanja: veljača 2011.

Medijski sadržaj

  1. 17. sij

    There were some incredible -themed Lego models of spacecraft including , , & at last weekend in !

  2. 8. sij

    Congrats to team (PI Suvrath Mahadevan) on 1st light for new -finding spectrograph on at , a joint project! showing 1st light spectra of 51 Peg @

  3. 7. sij

    speaking about NExScI and NASA Exoplanet Archive on hyperwall at *now*!

  4. 5. sij
    Odgovor korisnicima

    I think yes. Note there is bus between conv center and hotels and Hilton/Waikiki. Schedule here:

  5. 4. sij

    Quirrenbach: ‘Great missions are usually general-purpose observatories’ discussing Voyage 2050

  6. 3. sij
  7. 21. pro 2019.

    Evolution of the name left: "Beldelgenze": Alfonsine Tables 1250s Latin transln from Arabic by Toledo translators under King Alfonso X (shown is 1492 printed vers; ) right: "Betelgeuze" Bayer's 1603 Uranometria (intrdcd Greek letter ->Alpha Ori)

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  8. 20. pro 2019.

    John Herschel reported on 's variability in 1840, & compared his years of observations to his father's (William). I love Herschel's description of photometry, trying to quantify by-eye estimates, and trying to make sense of the variability:

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  9. 20. pro 2019.

    fnter than 1st mag looks less remarkable when looked at over a century. Here is nice discssn frm Dolan+2016 on prospects for supernova, prhps w/i next ~100,000 yrs. Chances you'll see it in your life: Prob ~<0.1%.

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  10. 20. pro 2019.

    Al-Sufi's description of Orion & from Kitāb suwar al-kawākib, medieval treatise on astro & Arabic 'update' to Almagest from 964 (transltd by Ihsan Hafez, 2010 PhD). Centuries later in Europe, a scribe mistransliterated Arabic Y in Yad al-Jauza' to B & rest is history

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  11. 20. pro 2019.

    Regarding 's "historic" dimming, here's V-band & photovis magnitude estimates from database over past century. *You* try maintaining constant luminosity w/~20 solar masses spread out within the size of Jupiter's orbit, w/convection & nucleosynthesis is 3D!

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  12. 22. stu 2019.

    Showed num plot below last year, with original plot by De Meo+2015, & annoying labels of limited laugh value are mine. Long term N_asteroid doubles about every decade w/interesting historical pauses. But... N_exoplanet > N_asteroid by ~2047?

  13. 13. stu 2019.

    's powerpoint animation on where the Sun was when the dinosaurs roamed in *under the floating head of * on the site right now. congrats Jessie!!!

  14. 12. stu 2019.

    So is "Superpuff" here to stay as an type? Densities < 0.1 g/cc... originally from Lee & Chiang 2015: Radii ~> 4 Rearth, Masses ~< 6 Mearth Instances of use by publications in

  15. 12. stu 2019.

    In case there was any confusion about what a "near-Earth object" is... there is language in the 's Authorization Act of 2019 (p.54)! Surprised seeing term "Astronomical Units" in a bill too!

  16. 7. stu 2019.

    It is similar to Fonzacity, or the ability of to jump habitable states amongst alien sharks, except fugacity involves oxygen

  17. 6. stu 2019.

    "Detailed Calculations of Galactic Orbits Using the Measurable 6D Positions+Velocities of Bees Currently in My Vicinity [Thank You Gaia Bee-Tracker], and Myself, in Order to Figure Out Which Bee Stung Me on Tuesday Afternoon During Tea" or "Searching for 'Oumuamua's Birth System"

  18. 31. lis 2019.
    Odgovor korisniku/ci

    Got some white dwarfs on your shoulder to shake off before lecture, Prof Skywalker

  19. 28. lis 2019.

    Fitzpatrick to Fitzpatrick connection strong tonight!

  20. 27. lis 2019.

    Noted B supergiant star Sanduleak -69 202, bipolar nebulosity advocate, promoter of cobalt, nickel, neutrinos; dead at 6,000,000

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