Results 1 to 10 of about 37,456 (169)

Modelling the ArH$^+$ emission from the Crab Nebula [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
We have performed combined photoionization and photodissociation region (PDR) modelling of a Crab Nebula filament subjected to the synchrotron radiation from the central pulsar wind nebula, and to a high flux of charged particles; a greatly enhanced ...
Barlow, M. J., Priestley, F. D., Viti, S.   +2 more
core   +7 more sources

How Green Banks can create multiple types of value in the transition to net zero emissions

Australian Journal of Public Administration, EarlyView., 2023
Abstract Current levels of investment are insufficient to meet the goals of the Paris Agreement, and private sector funding shortfalls are acute. Despite this, little research has been undertaken into Green Banks, a new form of institution which mixes public and private institutional logics to mobilise additional private investment in the net zero ...
Michelle Lyons, Lee Victoria White
wiley   +1 more source

Emission Lines of Northern Planetary Nebulae [PDF]

Proceedings of the International Astronomical Union, 2016
AbstractIn this work, we present results of long slit spectrophotometric emission line flux observations of selected planetary nebulae (PNe). We have measured absolute fluxes and equivalent widths (EW) of all observable emission lines. In addition to these observations, electron temperatures (Te), densities (Ne), and chemical abundances were also ...
Aksaker, Nazim, Yerli, Sinan K., Kiziloglu, Umit, Atalay, Betul   +3 more
openaire   +4 more sources

S II emission lines in Planetary Nebulae [PDF]

Symposium - International Astronomical Union, 1997
Emission lines arising from transitions in S II have been detected in a wide variety of astronomical sources, including planetary nebulae (Hyung, Keyes & Aller 1995). These transitions are used to derive information on emitting plasmas parameters (Te, Ne) through diagnostic line ratios, although to calculate these quantities reliably, accurate ...
Kenneth L. Bell, Lawrence H. Aller, F. C. McKenna, Catherine Ramsbottom, Siek Hyung, Francis P. Keenan   +5 more
openaire   +2 more sources

High Resolution Infrared Imaging and Spectroscopy of the Pistol Nebula: Evidence for Ejection [PDF]

, 1999
We present new NICMOS/HST infrared images and CGS4/UKIRT Br-alpha (4.05 um) spectroscopy of the Pistol Star and its associated nebula, finding strong evidence to support the hypothesis that the Pistol Nebula was ejected from the Pistol Star. The Pa-alpha
Amos Yahil, Donald F. Figer, Eugene Serabyn, Hummer D. G., Ian S. McLean, Insertis F. M., Mark Morris, Marston A. P., Moneti A., R. C. Puetter, R. Michael Rich, Serabyn E., T. R. Geballe, Wynn-Williams C. G.   +13 more
core   +4 more sources

Spitzer Space Telescope Infrared Imaging and Spectroscopy of the Crab Nebula [PDF]

, 2006
We present 3.6, 4.5, 5.8, 8.0, 24, and 70 micron images of the Crab Nebula obtained with the Spitzer Space Telescope IRAC and MIPS cameras, Low- and High-resolution Spitzer IRS spectra of selected positions within the nebula, and a near-infrared ground ...
Bandiera R., Charles E. Woodward, Clayton D. D., Elisha F. Polomski, Gehrz R. D., Jaffe W. J., Kardashev N. S., Kris Davidson, Lawrence Rudnick, Lunming Yuen, Nathan Smith, Oliva E., Robert D. Gehrz, Swinbank E., Takashi Onaka, Tea Temim, Thomas L. Roellig, Veron-Cetty M. P.   +17 more
core   +4 more sources

High velocity structures in, and the X-ray emission from the LBV nebula around Eta Carinae [PDF]

, 2000
The Luminous Blue Variable star Eta Carinae is one of the most massive stars known. It underwent a giant eruption in 1843 in which the Homunculus nebula was created.
Bomans, Dominik J., Duschl, Wolfgang J., Weis, Kerstin   +2 more
core   +2 more sources

GREAT [CII] and CO observations of the BD+40{\deg}4124 region [PDF]

, 2012
The BD+40\degree4124 region was observed with high angular and spectral resolution with the German heterodyne instrument GREAT in CO J = 13 \rightarrow 12 and [CII] on SOFIA.
Aspin, Creech-Eakman, Davies, G. Sandell, H. Wiesemeyer, Herbig, Heyminck, Hillenbrand, J. Stutzki, Looney, Loren, Lorenzetti, M. A. Requena-Torres, Marvel, Okamoto, Ossenkopf, R. Güsten, R. Simon, S. Heyminck, Sandell, Shevchenko, Skinner, U. U. Graf, van den Ancker, van den Ancker, van Kempen   +25 more
core   +2 more sources

Maser emission in planetary nebulae [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractStars at the top of the asymptotic giant branch (AGB) can exhibit maser emission from molecules like SiO, H2O and OH. These masers appear in general stratified in the envelope, with the SiO masers close to the central star and the OH masers farther out in the envelope.
openaire   +3 more sources

The Radio Properties and Magnetic Field Configuration in the Crab-like Pulsar Wind Nebula G54.1+0.3 [PDF]

, 2009
We present a multifrequency radio investigation of the Crab-like pulsar wind nebula (PWN) G54.1+0.3 using the Very Large Array. The high resolution of the observations reveals that G54.1+0.3 has a complex radio structure which includes filamentary and ...
Arons, Atoyan, Bietenholz, Bock, Camilo, Cornelia C. Lang, Fangjun Lu, Frail, Furst, Gaensler, Gaensler, Kelsey I. Clubb, Koo, Kothes, Leahy, Lu, Ng, Q. Daniel Wang, Rees, Reich, Slane, Slane, Velusamy, Velusamy, Wang, Woltjer   +25 more
core   +3 more sources