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Author: Cowley, C. R.; Hubrig, S.; Bord, D. J.
There are many strange things about the abundances in Przybylski's star (HD 101065). The most recent study (MN, 217, 299, 2000) finds that among the elements through copper, the abundances scatter with no apparent pattern. The largest deviations from solar are found for magnesium, which may be deficient by somewhat more than 1 dex, and cobalt, which appears to be in excess by about the same amount.The heavier elements especially those beyond barium, and continuing through the actinides uranium and thorium, show a clear pattern and a remarkable coherence. We plot solar and stellar abundances on a logarithmic plot vs. atomic number Z, and displace the solar points upward by some 3 dex. While individual points do not overlap, there is a remarkable similarity in the overall trends from Z = 58-80, including the maxima caused in the solar case by the third r-process peak. Points for the displaced solar actinides fall near their stellar counterparts. The processes that produced the large enhancements of these heavy elements have not caused large fractionations of adjacent elements. We have new spectra from the ESO UVES spectrograph on UT2. Resolution is 80,000 (blue) and 110,000 (red), with S/N > 300. This material, and new oscillator strengths (AA 381, 1090,2002; AA 382, 368, 2002), allow a more complete analysis of U and Th. We find abundances near +2.5 for both elements (log(H) = 12), but uncertainties at the moment are surely +/- 0.3 dex. We are currently working to improve the accuracy. Current errors preclude the use of these observations for accurate cosmochronometry, even if the chemical differentiation were not relevant. If a U/Th ratio of unity could be taken at face value, it would imply an r-process event some 103 years ago. Thanks to B. Pfeiffer help and advice.
InterpretationIt is generally accepted that chemical anomalies in main sequence stars are fractionations due to radiative and gravitational forces. This is a plausible explanation for HD 101065. We see for the heavier elements a displaced solar abundance pattern. This holds more or less from barium through uranium (but not for the lighter elements). We must assume that the excesses, which are of the order of 1000 to 10 000 times the solar values occurred more or less uniformly. There appear to be no heavy elements that are underabundant, which can occur for some HgMn stars. Thus, if the current U/Th ratio was originally solar, we assume each element was enhanced by roughly a factor of 600. On the other hand, if the abundances of the heavy elements are due to nuclear processing, then the r-process must be invoked, since uranium and thorium are not produced in the s-process. Neither Tables 3 nor 4 have entries of U/Th with the value 0.44, which we for HD 101065. But numerous subjective choices led to this result. Had we chosen to weight the "best" Th II line somewhat less--say 1/3 rather than 1/2 the average of the 12 lines in Table 5, we would have a ratio of 0.36, in reasonable agreement with the last entry of Table 3 (Model No. 1). Model 2 would accommodate the ratio 0.44 for a supernova event 2 to 4 billion years ago (see Table 4). This would be reasonable for a star of mass 1.4 solar masses (F5). Przybylski would be happy with such a mass and the corresponding temperature (ca. 6300K). These stellar parameters conflict with the (subjective?) judgements of other workers, who believe the star is hotter than the 6600K value of Teff used by CRKBMB. They also conflict with the photometric estimate by North for the age of the star. A resolution of this might be obtained if reliable information could be obtained for the 235U/238U ratio. Thus a further investigation is indicated.
So anyways, I thought it was cool that our family has a star with the same name... Przybylski's star. Google Your name and see what you find. Here is what I Get When I Google: Ed PrzybylskiThanks for reading. Ed
Joe Cocker (real name John Robert Cocker) passed away on December 22, 2014.He was known for his raspy, gravelly voice and jerky seizure like movements. Before he passed, the icon, Billy Joel said in a concert that Joe, More than anyone should be already inducted into the Rock n Roll Hall of Fame. Billy did a tribute song for Joe letting people know that Joe had been ill and wasn't doing very well. He lived to the age of 70 but sang his famous "With a Little Help From My Friends" as far back as Woodstock in 1969. Joe Cocker was born in 1944 and had his singing debut at his older brothers gig when he was only 12 years old. In 1960 he formed a little band called the Cavaliers which broke up after a year. But he got right back in the game and became Vance Arnold of Vance Arnold and the Avengers. Joe's first and biggest hit was a rearrangement of the Beatle's song "With a Little Help From My Friends." Later on Beatle's Paul McCartney and George Harrison were so impressed by his rendition that they allowed Cocker to use more of their songs. Later on he was featured on Saturday Night Live. But he had a problem with drugs and alcohol. In fact he had a lot of issues showing up to his live performances due to his battle with alcoholism. Paul McCartney and Ringo Starr paid tribute to Joe Cocker at his funeral. R.I.P. Joe...
YouTube Rewind 2014 kicks off with "Turn Down for 2014"If you have been trying to figure out how to make your marketing go viral maybe you should view YouTube's 2014 recap. One thing is for certain, you might want to consider making your marketing ENTERTAINING. People stay on YouTube watching video after video for pure entertainment purposes. So if you are marketing anything yu may want to spice it up with a little bit of entertainment. So anyways, I am not going to turn this into some big lesson in marketing (although you may want to check out PewDewPie's YouTube channel as he is the most subscribed channel in YouTube for all time). The recap includes tons of people in from the wildly popular Ice Bucket Challenge. The last 2 years recap videos have surpassed 100,000,000 views so you may want to check out what is going on here! p.s. Get on my email list for some cool updates
Think About It...
AND TRY ENTERTAINING YOUR PROSPECTS IN YOUR CONTENT
What is www.TheIncomeMethod.comWell Before I get into exactly what TheIncomeMethod.com actually is I will tell you that you will find it right here! Secondly, I am an affiliate so let's get real... When you Decide To Join TheIncomeMethod.com I will earn a commission.
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