Zobrazeno 1 - 10
of 355
pro vyhledávání: '"Jacoby, G. A."'
Autor:
Rector, T. A., Barbier, L., Couperis, A., Danner, R., Egan, A., Green, P., Jacoby, G., Monkiewicz, J., Nikutta, R., Pitman, K., Rutkowski, M., Tuttle, S., Virkki, A., Volk, K.
The AAS Strategic Plan for 2021-26 called for the creation of a task force to identify how the AAS can meet the goals of the Paris Agreement. The AAS and its membership recognize the danger climate change represents to humanity and our world, and to
Externí odkaz:
http://arxiv.org/abs/2406.10451
Autor:
De Marco, Orsola, Reichardt, T., Iaconi, R., Hillwig, T., Jacoby, G. H., Keller, D., Izzard, R. G., Nordhaus, J., Blackman, E. G.
One in 5 planetary nebulae are ejected from common envelope binary interactions but Kepler Space Telescope results are already showing this proportion to be larger. Their properties, such as abundances can be starkly different from those of the gener
Externí odkaz:
http://arxiv.org/abs/1612.03515
Autor:
Douchin, D., De Marco, O., Jacoby, G. H., Hillwig, T. C., Frew, D. J., Bojicic, I., Jasniewicz, G., Parker, Q. A.
Why 80% of planetary nebulae are not spherical is not yet understood. The Binary Hypothesis states that a companion to the progenitor of the central star of a planetary nebula is required to shape the nebula and even for a planetary nebula to be form
Externí odkaz:
http://arxiv.org/abs/1210.6865
Autor:
Douchin, D., De Marco, O., Jacoby, G. H., Hillwig, T. C., Frew, D. J., Bojicic, I., Jasniewicz, G., Parker, Q. A.
There is no quantitative theory to explain why a high 80% of all planetary nebulae are non-spherical. The Binary Hypothesis states that a companion to the progenitor of a central star of planetary nebula is required to shape the nebula and even for a
Externí odkaz:
http://arxiv.org/abs/1210.6226
In an attempt to determine how many planetary nebulae derive from binary interactions, we have started a project to measure their unbiased binary fraction. This number, when compared to the binary fraction of the presumed parent population can give a
Externí odkaz:
http://arxiv.org/abs/1210.2841
The light element abundance pattern from many planetary nebulae (PNe) covering the upper 4 mag. of the [O III] luminosity function was observed with ESO VLT FORS1 multi-slit. Spectra of 51 PNe over the wavelength range 3500-7500 Angstrom were obtaine
Externí odkaz:
http://arxiv.org/abs/1205.2500
The Kepler Observatory offers unprecedented photometric precision (<1 mmag) and cadence for monitoring the central stars of planetary nebulae, allowing the detection of tiny periodic light curve variations, a possible signature of binarity. With this
Externí odkaz:
http://arxiv.org/abs/1110.4436
Autor:
Douchin, D., De Marco, O., Frew, D. J., Jacoby, G. H., Passy, J. -C., Hillwig, T., Howell, S. B., Bond, H., Peyaud, A., Zijlstra, A., Napiwotzki, R., Jasniewicz, G., Parker, Q.
During the past 20 years, the idea that non-spherical planetary nebulae (PN) may need a binary or planetary interaction to be shaped was discussed by various authors. It is now generally agreed that the varied morphologies of PN cannot be fully expla
Externí odkaz:
http://arxiv.org/abs/1110.4192
The Planetary Nebulae Luminosity Function (PNLF) describes the collective luminosity evolution for a given population of Planetary Nebulae (PN). A major paradox in current PNLF studies is in the universality of the absolute magnitude of the brightest
Externí odkaz:
http://arxiv.org/abs/1010.1655
Deep wide-field H$\alpha$+[NII] imaging around the Virgo cluster giant elliptical galaxy M86 reveals a highly complex and disturbed ISM/ICM. The most striking feature is a set of H$\alpha$ filaments which clearly connect M86 with the nearby disturbed
Externí odkaz:
http://arxiv.org/abs/0810.0711