Results 31 to 40 of about 28,676 (218)

Close Binaries and the Abundance Discrepancy Problem in Planetary Nebulae

Galaxies, 2018
Motivated by the recent establishment of a connection between central star binarity and extreme abundance discrepancies in planetary nebulae, we have carried out a spectroscopic survey targeting planetary nebula with binary central stars and previously ...
R. Wesson, D. Jones, J. García-Rojas, H. M. J. Boffin, R. L. M. Corradi   +4 more
doaj   +1 more source

THE EMISSION-LINE DUSTY OBJECT IRAS 07080+0605, A LESS-EVOLVED EXAMPLE OF THE RED RECTANGLE

Odessa Astronomical Publications, 2020
The all-sky survey conducted by the InfraRed Astronomical Satellite (IRAS) in the 1980’s discovered many objects with infrared excesses whose nature has not been explored until recently.
S A. Khokhlov, A. S. Miroshnichenko, S. V, Zharikov, N. Manset, O. V. Zakhozhay, I. O. Bilinskyi, K. N. Grankin, A. V. kusakin, C. T. Omarov, R. I, Kokumbaeva, I. V. Reva, D. Korcakova, I. A. Usenko, A. K. Kuratova   +13 more
doaj   +1 more source

An HST Snapshot Survey of Proto-Planetary Nebulae Candidates: Two Types of Axisymmetric Reflection Nebulosities [PDF]

, 1999
We report the results from an optical imaging survey of proto-planetary nebula candidates using the HST. We exploited the high resolving power and wide dynamic range of HST and detected nebulosities in 21 of 27 sources.
Bakker E. J., Blocker T., Blommaert J. A. D. L., Bujarrabal V., Corradi R. L. M., Decin L., Dobashi K., Feast M. W., Garcia-Lario P., Garcia-Lario P., Geballe T. R., Gutler J., Hu J. Y., Hu J. Y., Hu J. Y., Iyengar K. V. K., Kahn F. D., Klochkova V. G., Le Bertre T., Likkel L., Lintel Hekkert P., Loup C., Manchado A., Margaret Meixner, Matthew Bobrowsky, Mellema G., Oudmaijer R. D., Parthasarathy M., Reddy B. E., Reddy B. E., Riera A., Schonberner D., Skinner C. J., Slijkhuis S., Smith V. V., Toshiya Ueta, Van der Veen W. E. C. J., Waelkens C., Waters L. B. F. M., Whitelock P. A., Zcs L.   +40 more
core   +4 more sources

Sociology and The Complexity of What Is Missing

The British Journal of Sociology, EarlyView.
ABSTRACT What is ‘missed’ by sociological literature underpinned by assumptions of presence that a missing approach can rectify? I appropriate a metaphysics of presence and an alternative focus on what is missing as ontological foci to revisit complexity studies in sociology.
Konstantinos Poulis
wiley   +1 more source

Planetary nebulae: a key tool to reconstruct the evolutionary history of stars

Frontiers in Astronomy and Space Sciences
Planetary nebulae, among the most fascinating objects in the sky, have been extensively investigated in the past years, because their study provides important information on the low and intermediate mass stellar populations of the host environment ...
Paolo Ventura, Silvia Tosi, Flavia Dell’Agli, Stefano Bianchi   +3 more
doaj   +1 more source

Abell 41: shaping of a planetary nebula by a binary central star?

, 2010
We present the first detailed spatio-kinematical analysis and modelling of the planetary nebula Abell 41, which is known to contain the well-studied close-binary system MT Ser.
Abell, Balick, Balick, Beaulieu, Bond, Bruch, Bryce, D. Jones, D. L. Mitchell, D. Pollacco, De Marco, Grauer, Gurzadyan, J. A. López, J. Meaburn, Jones, Kahn, Kwok, M. Lloyd, M. M. Rubio-Díez, M. Santander-García, Meaburn, Meaburn, Meaburn, Miszalski, Mitchell, N. M. H. Vaytet, Nordhaus, Ogloza, Phillips, Pollacco, Ramos-Larios, Sabbadin, Sahai, Santander-García, Shimanskii, Solf, Steffen, Sánchez Contreras, T. J. O'Brien, Wareing, Weinberger   +41 more
core   +1 more source

Affective Infrastructure: Capitalism's Specters in the Ecovillage Findhorn Community

Anthropology of Consciousness, EarlyView.
ABSTRACT The Ecovillage Findhorn Community (EFC) in Northeast Scotland seeks to live in harmony with nature. How the community has done this over its 60‐plus years has changed from social communalism, where residents lived in cheap caravans, to now mostly privately‐owned expensive ‘eco’ houses with green technology.
Kelsey D. Grubbs
wiley   +1 more source

Discovery of Radial Spectral Hardening in the Hot Bubble of Planetary Nebula BD+30°3639 with Median Energy Imaging

The Astrophysical Journal
We apply an imaging analysis technique to study the spatial distribution of the X-ray spectral hardness across the hot bubble of planetary nebula BD+30°3639.
Rodolfo Montez Jr.
doaj   +1 more source

X-ray Shaping of Planetary Nebulae

Galaxies, 2018
The stellar winds of the central stars of planetary nebulae play an essential role in the shaping of planetary nebulae. In the interacting stellar winds model, the fast stellar wind injects energy and momentum, which are transferred to the nebular ...
Martín A. Guerrero
doaj   +1 more source

Decisions Under Radical Uncertainty: The Role of Volitional Liminality in Radical Innovation

Journal of Product Innovation Management, EarlyView.
ABSTRACT Academic Summary Radical innovation management can be understood as an organizational practice that enacts distant futures, which are open‐ended and unknowable. Such radical innovation endeavors are thus characterized by radical uncertainty, where possible futures are not only quantitatively but qualitatively different from the present, and ...
José Antonio Rosa, Marcelo F. de la Cruz Jara, Jelena Spanjol   +2 more
wiley   +1 more source