Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Prialnik, Dina"'
Autor:
Shara, Michael M., Lessing, Alec M., Hounsell, Rebekah, Mandel, Shifra, Zurek, David, Darnley, Matthew J., Graur, Or, Hillman, Yael, Meyer, Eileen T., Mikolajewska, Joanna, Neill, James D., Prialnik, Dina, Sparks, William
M87 has been monitored with a cadence of 5 days over a 9 month-long span through the near-ultraviolet (NUV:F275W) and optical (F606W) filters of the Wide Field Camera 3 (WFC3) of the $\textit{Hubble Space Telescope}$. This unprecedented dataset yield
Externí odkaz:
http://arxiv.org/abs/2308.15599
Autor:
Parhi, Adam, Prialnik, Dina
Kuiper belt objects, such as Arrokoth, the probable progenitors of short-period comets, formed and evolved at large heliocentric distances, where the ambient temperatures appear to be sufficiently low for preserving volatile ices. By detailed numeric
Externí odkaz:
http://arxiv.org/abs/2304.04482
We consider planets composed of water ice and rock, located far from a central star. In an earlier study, computing the growth of planets by continuous accretion, we found that a large fraction of the ice evaporates upon accretion, creating a water v
Externí odkaz:
http://arxiv.org/abs/2302.05921
Autor:
Prialnik, Dina, Jewitt, David
Ice naturally forms in the disordered or ``amorphous'' state when accreted from vapor at temperatures and pressures found in the interstellar medium and in the frigid, low density outer regions of the Sun's protoplanetary disk. It is therefore the ex
Externí odkaz:
http://arxiv.org/abs/2209.05907
It is reasonable to assume that the structure of a planet and the interior distribution of its components are determined by its formation history. We thus follow the growth of a planet from a small embryo through its subsequent evolution. We estimate
Externí odkaz:
http://arxiv.org/abs/2206.12861
The interest in the structure of ice-rich planetary bodies, in particular the differentiation between ice and rock, has grown due to the discovery of Kuiper belt objects and exoplanets. We thus carry out a parameter study for a range of planetary mas
Externí odkaz:
http://arxiv.org/abs/2201.02976
The hydrogen-rich envelopes accreted by white dwarf stars from their red dwarf companions lead to thermonuclear runaways observed as classical nova eruptions peaking at up to 1 Million solar luminosities. Virtually all nova progenitors are novalike b
Externí odkaz:
http://arxiv.org/abs/2001.05025
Publikováno v:
The Astrophysical Journal Letters, Volume 879:L5 (5pp), 2019
The supersoft X-ray and optical transient ASASSN-16oh has been interpreted by Maccarone et al. (2019) as having being induced by an accretion event on a massive white dwarf, resembling a dwarf nova super-outburst. These authors argued that the supers
Externí odkaz:
http://arxiv.org/abs/1906.11464
Models have long predicted that the frequency-averaged masses of white dwarfs in Galactic classical novae are twice as large as those of field white dwarfs. Only a handful of dynamically well-determined nova white dwarf masses have been published, le
Externí odkaz:
http://arxiv.org/abs/1804.06880
Horizontal branch (HB) morphology is a complex multiple-parameter problem. Besides the metallicity, two other leading parameters are the mass loss rate (MLR) and the initial He abundance of the HB progenitors. Using the STAREV stellar evolution code,
Externí odkaz:
http://arxiv.org/abs/1709.02127