Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Attay Kovetz"'
Publikováno v:
Advances in Space Research. 66:1072-1079
Direct determination of WD masses in CVs is extremely difficult, which is the reason very few direct determinations exist. We present a method for calculating an estimate of WD masses in CVs and of the rate at which they accrete matter from their com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47f8a87e84ab29a919bb4497eddea995
https://doi.org/10.1016/j.asr.2019.08.029
https://doi.org/10.1016/j.asr.2019.08.029
Publikováno v:
Nature Astronomy. 4:886-892
The envelopes accreted by white dwarf stars from their hydrogen-rich companions1 experience thermonuclear-powered runaways2,3 observed as classical nova eruptions4,5 peaking at 105–106 solar luminosities6–9. Virtually all nova progenitors—‘no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ab64350bbd29209f505ca2bf370790d
https://doi.org/10.1038/s41550-020-1062-y
https://doi.org/10.1038/s41550-020-1062-y
Autor:
David R. Zurek, Attay Kovetz, Joanna Mikolajewska, Ariel Goerl, D. L. Welch, Trisha F. Doyle, Juan P. Madrid, James T. Garland, Tod R. Lauer, Michael M. Shara, James D. Neill, O. Yaron, Edward A. Baltz, Ashley Pagnotta, Tamara Machac, Dina Prialnik
Publikováno v:
NASA Astrophysics Data System
Ten weeks of daily imaging of the giant elliptical galaxy M87 with the Hubble Space Telescope (HST) has yielded 41 nova light curves of unprecedented quality for extragalactic cataclysmic variables. We have recently used these light curves to demonst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6220eb856735960929ba6d96cbc71fe
http://arxiv.org/abs/1702.06988
http://arxiv.org/abs/1702.06988
Autor:
Attay Kovetz, Dina Prialnik, Douglas L. Welch, James D. Neill, Edward A. Baltz, David Zurek, Tod R. Lauer, Joanna Mikolajewska, Michael M. Shara, Trisha F. Doyle, Juan P. Madrid, Ofer Yaron
The extensive grid of numerical simulations of nova eruptions of Yaron et al.(2005) first predicted that some classical novae might deviate significantly from the Maximum Magnitude - Rate of Decline (MMRD) relation, which purports to characterise nov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d0c933ccbb35b6143a7324241a7bf4d
http://arxiv.org/abs/1702.05788
http://arxiv.org/abs/1702.05788
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 446:1924-1930
A definitive determination of the progenitors of type Ia supernovae (SNIa) has been a conundrum for decades. The single degenerate scenario $-$ a white dwarf (WD) in a semi-detached binary system accreting mass from its secondary $-$ is a plausible p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d21a5b76d7cb2ff2a013024f707128d3
https://doi.org/10.1093/mnras/stu2235
https://doi.org/10.1093/mnras/stu2235
Publikováno v:
EAS Publications Series. :151-153
Focusing on recurrent novae (RN), we explore white dwarf (WD) masses and accretion rates ( Ṁ ), to determine the combinations that will retain some of the accreted mass at the end of each cycle. Thus, the WD may grow toward the Chandrasekhar mass (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2af51e28fbbe69695fbe8d9f53b46310
https://doi.org/10.1051/eas/1571033
https://doi.org/10.1051/eas/1571033
Publikováno v:
Astrophysical Journal, 829(2):118. IOP Publishing Ltd.
The internal structure of gas giant planets may be more complex than the commonly assumed core-envelope structure with an adiabatic temperature profile. Different primordial internal structures as well as various physical processes can lead to non-ho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::492502a3fb4f8127bb2a4eee5fff8363
https://dare.uva.nl/personal/pure/en/publications/the-evolution-and-internal-structure-of-jupiter-and-saturn-with-compositional-gradients(efd2ad0e-ccf8-4720-ae32-c17435e67ca9).html
https://dare.uva.nl/personal/pure/en/publications/the-evolution-and-internal-structure-of-jupiter-and-saturn-with-compositional-gradients(efd2ad0e-ccf8-4720-ae32-c17435e67ca9).html
Publikováno v:
The Astrophysical Journal. 860:110
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05178146529022162f78199fa95d2496
https://doi.org/10.3847/1538-4357/aabfbd
https://doi.org/10.3847/1538-4357/aabfbd
The primordial internal structures of gas giant planets are unknown. Often giant planets are modeled under the assumption that they are adiabatic, convective, and homogeneously mixed, but this is not necessarily correct. In this work, we present the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d567706828f105df6e1b7fcd9166a184
http://arxiv.org/abs/1502.03270
http://arxiv.org/abs/1502.03270
Can a white dwarf, accreting hydrogen-rich matter from a non-degenerate companion star, ever exceed the Chandrasekhar mass and explode as a type Ia supernova? We explore the range of accretion rates that allow a white dwarf (WD) to secularly grow in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c18d4e6a414161f983092b2e23e24db6