Results 21 to 30 of about 20,361 (303)

The evolution of planetary nebulae [PDF]

Astronomy & Astrophysics, 2010
By means of hydrodynamical models we do the first investigations of how the properties of planetary nebulae are affected by their metal content and what can be learned from spatially unresolved spectrograms of planetary nebulae in distant stellar systems.
Schönberner, D., Jacob, R., Sandin, C., Steffen, M.   +3 more
openaire   +2 more sources

Planetary stewardship in an urbanizing world: beyond city limits [PDF]

, 2012
Cities are rapidly increasing in importance as a major factor shaping the Earth system, and as such must take corresponding responsibility. With currently over half of the world population, cities are supported by resources originating from primarily ...
Elmqvist, Thomas, Lorraine Sugar, Svedin, U., Elmqvist, T., Mbow, Cheikh, Sinclair, Paul, Stafford-Smith, M., Shobhakar, Dhakal, Cheikh Mbow, Steffen, Will, Alfsen, Christine, Neda Farahbakhshazad, Uno Svedin, Gaffney, O., Biermann, F.H.B., Dearing, J.A., McMichael, A.J., Stafford Smith, M., Ninad R. Bondre, Adbullah, Saiful Arif, Haberl, H., Crumley, Carole, Pinho, Patricia Fernanda, Sinclair, Paul,, Biermann, Frank, McMichael, Anthony J., Olsson, P., Broadgate, Wendy J., Morais, J., Haberl, Helmut, Joao M. F. deMorais, Christine Alfsen, Seitzinger, Sybil P., Farahbakhshazad, N., Svedin, Uno, Patricia Fernanda Pinho, Deutsch, Lisa, Dearing, John A., Olsson, Per, Lavorel, S., deMorais, Joao M.F., Frank Biermann, Saiful Arif Abdullah, Sugar, Lorraine, Will Steffen, Crumley, Carole L.,, Dhakal, S., Smith, Mark Stafford, Steffen, W., Biermann, F., Dhakal, Shobhakar, Abdullah, Saiful Arif, Per Olsson, Seto, K.C., Crumley, C.L., Shobhakar Dhakal, Pinho, P, Bondre, Nanid R., Bondre, N.R., deMorais, Joao M. F., Farahbakhshazard, N., Pinho, P., Gaffney, Owen, Wendy J. Broadgate, Paul Sinclair, Deutsch, L., Karen C. Seto, Broadgate, W.J., Sybil P. Seitzinger, Lavorel, Sandra, Abdullah, S.A., Seitzinger, S.P., Alfsen, C., Lisa Deutsch, Farahbakhshazad, Neda, Seto, Karen C., Owen Gaffney, Sandra Lavorel, Sugar, L., Helmut Haberl, Bondre, Ninad R., John A. Dearing, Mbow, C., Sinclair, P., Crumley, C., Demorais, J.M., Thomas Elmqvist, Pinho, P.F., Mbow, Cheik, Anthony J. McMichael, Carole L. Crumley, Mark Stafford Smith   +91 more
core   +1 more source

ANTARCTICA: A TREASURE–TROVE FOR PLANETARY SCIENCES. AUSTRALASIAN MICROTEKTITES FROM EAST ANTARCTICA [PDF]

, 2020
The planetary science community has benefitted greatly from research in Antarctica. The discovery of large accumulations of meteorites in blue ice fields on the polar plateau since 1969 and of cosmic dust in Antarctic ice, snow and supraglacial moraines ...
Folco L
core  

The impact of planetary waves on the latitudinal displacement of sudden stratospheric warmings [PDF]

, 2013
The Northern Hemispheric winter is disturbed by large scale variability mainly caused by Planetary Waves (PWs), which interact with the mean flow and thus result in Sudden Stratospheric Warmings (SSWs).
P. Hoffmann, Rapp, Markus, Matthias, V., Manson, A., A. Manson, M. Rapp, G. Stober, C. Meek, Hoffmann, P., Stober, G., Brown, P., P. Brown, Meek, C., Rapp, M., V. Matthias   +14 more
core   +1 more source

Planetary Nebulae as Sources of Chemical Enrichment of the Galaxy

Frontiers in Astronomy and Space Sciences, 2022
During the late asymptotic giant branch (AGB) phase of stellar evolution, the element carbon is created through the triple-α nuclear reaction. This is followed by the synthesis of other heavy elements via neutron capture in the core and the dredge-up of ...
Sun Kwok, Sun Kwok
doaj   +1 more source

Summary of the Third International Planetary Dunes Workshop: Remote Sensing and Image Analysis of Planetary Dunes, Flagstaff, Arizona, USA, June 12-15, 2012

, 2013
The Third International Planetary Dunes Workshop took place in Flagstaff, AZ, USA during June 12-15, 2012. This meeting brought together a diverse group of researchers to discuss recent advances in terrestrial and planetary research on aeolian bedforms.
Yizhaq, Hezi, Chojnacki, Matthew, Bishop, Mark Ashley, Bishop, Marc A., Tirsch, Daniela, Neakrase, Lynn D. V., Bourke, Mary C., Newman, Claire E., Rubin, Dave M., Zimbelman, James R., Dinwiddie, Cynthia L., Horgan, Briony H., Neakrase, Lynn D.V., Hayward, Rosalyn K., Michaels, Timothy I., Bishop, Mark A., Zimbleman, James R., Horgan, Briony H. N., Burr, Devon M., Titus, Timothy N., Fenton, Lori K., Fenton, Lori, Kerber, Laura, Le Gall, Alice, Rubin, David M.   +24 more
core   +1 more source

New Dynamical State and Habitability of the HD 45364 Planetary System

, 2022
Planetary systems with multiple giant planets provide important opportunities to study planetary formation and evolution. The HD 45364 system hosts two giant planets that reside within the Habitable Zone (HZ) of their host star and was the first system ...
Kane, Stephen R., Howard, Andrew W., Isaacson, Howard T., Dalba, Paul A., Li, Zhexing   +4 more
core   +1 more source

Highly structured inner planetary system debris around the intermediate age sun-like star TYC 8830 410 1 [PDF]

, 2021
We present a detailed characterization of the extremely dusty main-sequence star TYC 8830 410 1. This system hosts inner planetary system dust (T dust ≈ 300 K) with a fractional infrared luminosity of ∼1%.
Weinberger, Alycia J., Olofsson, Johan, Song, Inseok, Highly Structured Inner Planetary System Debris around the Inter, Grant M., Melis, Carl, Sarkis, Paula, Krumpe, Mirko   +6 more
core   +1 more source

Dynamical evolution of extrasolar planetary systems [PDF]

Proceedings of the International Astronomical Union, 2004
To date, more than 130 extrasolar planets around main sequence stars are revealed mainly by the Doppler radial velocity measurements. Due to the observational biases, most of the detected planets are moving in orbits close to the host stars, with some in highly eccentric orbits.
Ji-Lin Zhou, Yi-Sui Sun
openaire   +1 more source

TOI-1136 is a Young, Coplanar, Aligned Planetary System in a Pristine Resonant Chain [PDF]

, 2023
Convergent disk migration has long been suspected to be responsible for forming planetary systems with a chain of mean-motion resonances (MMRs). Dynamical evolution over time could disrupt the delicate resonant configuration. We present TOI-1136, a 700 ±
Isaacson, Howard
core   +1 more source