Results 131 to 140 of about 4,999 (221)

ON THE SCALE HEIGHT OF PLANETARY-NEBULAE

, 1991
Based on the distribution at high galactic latitudes, the local scale height of planetary nebulae is determined. We find a value of 250 +/- 50 pc, assuming an exponential disk, or 190 +/- 40 pc in case of an isothermal disk. This agrees well with the old
POTTASCH, [No Value], ZIJLSTRA, AA
core   +1 more source

Nebular and auroral emission lines of [Cl III] in the optical spectra of planetary nebulae. [PDF]

Proc Natl Acad Sci U S A, 2000
Keenan FP, Aller LH, Ramsbottom CA, Bell KL, Crawford FL, Hyung S.   +5 more
europepmc   +1 more source

Dense circumstellar nebulae in wide binary central stars

, 2010
Detection of close binary central stars with periods of less than a day is now well-tested and routinely possible via photometric monitoring. For wide binary central stars with periods of weeks to years detection techniques are still in their infancy ...
Miszalski, B, Mikolajewska, J, Moffat, AFJ, Boffin, HMJ, Napiwotzki, R, Acker, A, Frew, DJ, Parker, QA   +7 more
core  

Crystallization of stardust analogs under an electron flux atmosphere. [PDF]

PNAS Nexus
Shohan RA, Cly C, Speck A, Sargent B, Nuth JA, Whittington A, Ponce A.   +6 more
europepmc   +1 more source

C₂₀ and nitrogen-substituted fullerenes: anharmonic IR and UV-vis spectra for astrophysical environments. [PDF]

RSC Adv
Karri VL, Chaudhari A, Onaka T, Naganathappa M.   +3 more
europepmc   +1 more source

History of individual presolar SiC grains revealed by stellar winds. [PDF]

Nat Commun
Bajo KI, Izumi T, Otsuki Y, Amari S, Yurimoto H.   +4 more
europepmc   +1 more source

A search for CO+ in planetary nebulae

, 2011
We have carried out a systematic search for the molecular ion CO+ in a sample of 8 protoplanetary and planetary nebulae in order to determine the origin of the unexpectedly strong HCO+ emission previously detected in these sources.
Redman, Matt P.
core  

Uncovering the integral spectral characteristics of the planetary nebula IC 4642. [PDF]

Sci Rep
Mohery M, Ali A, Hamam KA, Khames AA, Alsubaie AS.   +4 more
europepmc   +1 more source

Clumps in planetary nebulae

Open Astronomy, 1992
Kholtygin A. F., Feklistova T.
doaj   +1 more source

Information-Entropy Analysis of Stellar Evolutionary Stages with Application to FS CMa Objects. [PDF]

Entropy (Basel)
Zhanabaev Z, Akniyazova A, Ashimov Y.
europepmc   +1 more source