Results 81 to 90 of about 28,676 (218)

The enigmatic central star of the planetary nebula PRTM 1

, 2012
The central star of the planetary nebula PRTM 1 (PN G243.8-37.1) was previously found to be variable by M. Pena and colleagues. As part of a larger programme aimed towards finding post common-envelope binary central stars we have monitored the central ...
Afšar, Appenzeller, B. Miszalski, Balick, Bond, Bond, Bond, Bond, Chu, Ciardullo, Corradi, Crowther, D. Jones, De Marco, De Marco, De Marco, Feibelman, Fontaine, Frew, H. M. J. Boffin, Hambly, Jones, Lopez, Miszalski, Miszalski, Miszalski, Miszalski, Miszalski, Moe, Méndez, Méndez, Méndez, Méndez, Napiwotzki, Nordhaus, Paczynski, Pasquini, Pena, Pena, Sabbadin, Schwarz, Schönberner, Soker, Soker, Sorensen, Tyndall   +45 more
core   +1 more source

New Arabic Records From Cairo on Supernovae 1181 and 1006

Astronomische Nachrichten, Volume 346, Issue 9, November 2025.
ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer, H. Halm, R. Neuhäuser, D. L. Neuhäuser   +3 more
wiley   +1 more source

The ionization structure of multiple shell planetary nebulae: I. NGC 2438

, 2014
In recent times an increasing number of extended haloes and multiple shells around planetary nebulae have been discovered. These faint extensions to the main nebula trace the mass-loss history of the star, modified by the subsequent evolution of the ...
Kimeswenger, S., Oettl, S., Zijlstra, A. A.   +2 more
core   +1 more source

MULTI-STAGES OPTIMIZED PHOTOIONIZATION MODELLING OF PLANETARY NEBULA LMC SMP-21

Odessa Astronomical Publications, 2012
The new approximation expression for the representation of gas density distribution in planetary nebulae envelopes was proposed. The new multi-stages method for the caclulation of the chemical composition and physical parameters of planetary nebulae ...
B. Ya. Melekh, V. V. Holovatyy, N. V. Havrylova, M. M. Sokil, N. L. Tyshko, A. V. Demchyna   +5 more
doaj   +1 more source

Workshop on the Origins of Solar Systems [PDF]

Topics addressed include: interstellar chemistry and primitive bodies; astronomical measurements and nebula models; solar nebula models and meteorite; and planetary accumulation and ...
Nuth, Joseph A., Sylvester, Paul
core   +1 more source

Detailed studies of IPHAS sources - III. The highly extinguished bipolar planetary nebula IPHASX J191104.8+060845 [PDF]

, 2020
J B Rodríguez-González, L. Sabin, J. A. Toalá, S. Zavala, G. Ramos-Larios, M. A. Guerrero, Q. A. Parker, P. F. Guillén, Andreas Ritter   +8 more
openalex   +1 more source

Bubbles and Knots in the Kinematical Structure of the Bipolar Planetary Nebula NGC 2818

, 2012
High-resolution Hubble Space Telescope (HST) archive imaging and high-dispersion spectroscopy are used to study the complex morphological and kinematical structure of the planetary nebula, NGC 2818.
Vázquez, Roberto
core   +1 more source

Visible and Infrared Spectroscopy of the Planetary Nebula M4-18

, 2022
R. J. Rudy, John P. Subasavage, Jon C. Mauerhan   +2 more
openalex   +1 more source

AI Techniques for Uncovering Resolved Planetary Nebula Candidates from the VPHAS+ Survey [PDF]

, 2023
Yushan Li, Q. A. Parker, Peng Jia, Ruiqi Sun, J. Y. Li, Xu Li, Liang Cao   +6 more
openalex   +1 more source

Tycho Supernova Exploded Inside a Planetary Nebula (SNIP)

Universe
I analyze recent X-ray data from the literature of the type Ia supernova remnant (SNR Ia) Tycho and conclude that Tycho is a SN Ia inside a planetary nebula (SNIP), strengthening such a previous suggestion from 1985.
Noam Soker
doaj   +1 more source