There are several different classes of supernovae. For example, Type II supernovae are associated with larger mass stars. The Sun will not terminate as a supernova, but may potentially evolve into a standard (or not) planetary nebula (see the Universe Today post “Astronomers Hint that our...
But turning my list of conjunction pairs into a graph so I could use a pre-made graph theory algorithm looked like it was going to be more code -- and a lot harder to read and less maintainable -- than making a bunch of custom Python classes. I eventually ended up with three ...
The physical distortion of an object (such as a neutron star) caused by extreme gravitational field gradients present near massive compact objects, such as stellar black holes and neutron stars. Post-Newtonian expansion Expansion of the ratio of the velocity of an object that creates the gravitatio...
we use asteroseismology to identify two classes of stars that must have undergone considerable mass loss, presumably due to stripping in binary interactions. The first class comprises about seven underluminous stars with smaller helium-burning cores than their single-star counterparts. Theoretical models...
Being a very lazy student, he seldom takes ___ in all his classes. A. notices B. notes C. papers D. sights 8. ___ I could copy down the words on the blackboard, the teacher had wiped them off it. A. When B. Until C. Before D. Unless 9. The doctor said that she...
(high school and college) come to NRAO for an intense course in radio astronomy. The staff turn on the knowledge firehose and “really pour it on them”, as Mr. Sizemore puts it. They have classes during the day and then do research at night with the telescopes. He says it’s not ...
The SkySafari 5 app can display circles around classes of objects, including all the Messiers. This image shows the evening sky at 8 p.m. on March 27, 2017, the last evening of Messier Marathon season, when all 110 objects can be viewed in a single night. To do the marathon, you wi...
The profiles reveal the 𝐿0L0 drops steeply near the ground, then gradually increases with altitudes from the boundary layer to the upper troposphere, subsequently decreases with altitudes to the lower stratosphere, and, finally, increases in the free atmosphere. The value peaks of 𝐿0L0 ...
Several classes were developed in order to incorporate the methods defined in the application (Figure 2). Each button and menu was developed with its own graphic interface composed of inputs, parameters and output fields. The input and output field allows one to access the file through a ...
The separating hyperplane is obtained by seeking a projection which maximizes the distance between means of the two classes, and minimizes the inter-class variance. In the case of an N-class problem (N>2), several hyperplanes are used [477]. The LDA technique is very suitable for online ...