![]() ![]() "Because this white dwarf is relatively close to us, we've got lots of data on it - we've got information about its spectrum of light, but the missing piece of the puzzle has been a measurement of its mass," said McGill. The collapsed remains of a star that burned out 1 billion years ago, LAWD 37 has been extensively studied because it is only 15 light-years away in the constellation Musca. ![]() "Our latest observation provides a new benchmark because LAWD 37 is all by itself," Sahu said. ![]() But that dwarf is in a widely separated binary system. Kailash Sahu of the Space Telescope Science Institute in Baltimore, Maryland, the principal Hubble investigator on this latest observation, first used microlensing in 2017 to measure the mass of another white dwarf, Stein 2051 B. McGill used Hubble to precisely measure how light from a distant star bent around the white dwarf, known as LAWD 37, causing the background star to temporarily change its apparent position in the sky. The lead author is Peter McGill, formerly of the University of Cambridge (now based at the University of California, Santa Cruz). The results are reported in the Monthly Notices of the Royal Astronomical Society. As the white dwarf passed in front of the background star, microlensing caused the star to appear temporarily offset from its actual position on the sky. The light from a background star was slightly deflected by the gravitational warping of space by the foreground dwarf star. Orbital motion can be measured by telescopes only over a brief slice of the dwarf's orbital motion.įor this companion-less white dwarf, researchers had to employ a trick of nature, called gravitational microlensing. However, these measurements can be uncertain if the white dwarf's companion star is in a long-period orbit of hundreds or thousands of years. By watching the motion of two co-orbiting stars, straightforward Newtonian physics can be used to measure their masses. Until now, previous white dwarf mass measurements have been gleaned from observing white dwarfs in binary star systems. The unique observation yields insights into theories of the structure and composition of white dwarfs. This agrees with earlier theoretical predictions of the white dwarf's mass and corroborates current theories of how white dwarfs evolve as the end product of a typical star's evolution. Of those who are not currently selling agronomic services, 52% said they’re either unlikely or very unlikely to change directions in the next two years, while 17% said they’re likely to start selling agronomic services in the near future.Researchers found that the white dwarf is 56 percent the mass of our Sun. Ag Leader SMS (26.67%), Trimble Connected Farm (23.33%), Climate FieldView (20%) and Raven Slingshot (20%) round out the top 6.ĥ1.6% of dealers surveyed are not involved in selling or supporting agronomic services. 74% said yes, 16% were unsure and 10% said no.Ĭase IH AFS Connect and MyJohnDeere were tied (33.33%) for the most popular data management platforms offered in 2022, according to survey results. Data Management & Product Trendsįor the second year in a row, over 50% of dealers surveyed are actively selling data management services/packages supported by precision specialists.Ħ9% of dealers said their suppliers don’t have any requirements for data management.įor the first time in the 10-year history of the benchmark survey, dealers were asked the following question: Do you view selling precision technologies as a competitive advantage in attracting cross-over customers? 84% said yes, 10% were unsure and 6% said no.Īnother first-time question about customer behaviors asked if precision customers are more likely to use texting and other digital communications than non-precision customers. Some 35% of dealers surveyed said farm equipment salespeople are responsible for precision sales, while nearly 7% said dedicated precision salespeople and 3% said service department. Realistically, only about 5-10% of farmers will use or pay for it so it will not have as big of an impact as is forecasted.” ![]() “Everyone wants to talk about autonomy taking over. I see early adoption occurring in the plains states where fields are flat and there are minimal obstructions.” “Not sure our terrain is best suited for autonomous vehicles. We are a good 10-15 years away from fully autonomous machines being normal.” “I think we need to be getting ready for it, but I also think it’s in the infancy stage. “Not much, customers aren’t ready for it yet.” “In some places it will have a small impact and other regions it will have no impact at all.” How Will Autonomous Machinery Impact Your Dealership in the Next 5 Years? ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |