Results 1 to 10 of about 6,395 (141)
Galactic planetary nebulae with Wolf-Rayet nuclei. II. A consistent observational data set [PDF]
Astronomy & Astrophysics, 2001 We present high resolution spectrophotometric data for 34 galactic planetary nebulae with [WC] nuclei (WRPNe).The sample includes PNe with early and late [WC] stars and some WELS.
Acker +48 more
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Two Interesting Nuclei of Planetary Nebulae: IC 418 and NGC 40. [PDF]
Proc Natl Acad Sci U S A, 1941 Swings P, Struve O.
europepmc +4 more sources
Apparent Magnitudes of Planetary Nebulae Nuclei [PDF]
Symposium - International Astronomical Union, 1983 B and V magnitudes for the central stars of a number of planetary nebulae are presented. The observations were obtained between 1971 and 1981 with the University of Illinois one-meter telescope at Prairie Observatory. The average magnitudes presented are accurate extractions of the stellar continuum flux from the total (stellar plus nebular) measured ...
R.A. Shaw, J.B. Kaler
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When the Stars Align: A 5σ Concordance of Planetary Nebulae Major Axes in the Center of Our Galaxy
The Astrophysical Journal Letters, 2023 We report observations of a remarkable major axes alignment nearly parallel to the Galactic plane of 5 σ significance for a subset of bulge “planetary nebulae” (PNe) that host, or are inferred to host, short-period binaries. Nearly all are bipolar. It is
Shuyu Tan +4 more
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Catalog of Planetary Nebulae Detected by GALEX and Corollary Optical Surveys
The Astrophysical Journal Supplement Series, 2023 Planetary nebulae (PNs) consist of an ionized envelope surrounding a hot central star (CSPN) that emits mostly at ultraviolet (UV) wavelengths. UV observations, therefore, provide important information on both the CSPN and the nebula. We have matched the
M. A. Gómez-Muñoz +2 more
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The Astrophysical Journal, 2023 We present the final results of an imaging and spectroscopic search for stars in the Large Magellanic Cloud (LMC) with C ii λλ 7231, 7236 emission lines. The goal is to identify and study [WC11] stars, the coolest of the low-mass Wolf–Rayet sequence, and
Bruce Margon +4 more
doaj +1 more source
Nuclei of Planetary Nebulae [PDF]
Symposium - International Astronomical Union, 1974 The nuclei of planetary nebulae are examined both observationally and theoretically. It is seen that the region occupied by these stars in the log T— logL diagram is quite wide but consistent with a general progression of stars from high to low luminosity, with a noticeable but not large increase in luminosity during the early phase.
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The Binary and the Disk: The Beauty is Found within NGC3132 with JWST
The Astrophysical Journal, 2023 The planetary nebula (PN) NGC 3132 is a striking example of the dramatic but poorly understood mass-loss phenomena that (1–8) M _⊙ stars undergo during their death throes as they evolve into white dwarfs (WDs). From an analysis of JWST multiwavelength (0.
Raghvendra Sahai +6 more
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Close-Binary Nuclei of Planetary Nebulae [PDF]
Symposium - International Astronomical Union, 1992 Close-binary planetary-nebula nuclei (PNNs) provide direct evidence for occurrence of a common-envelope phase in binary-star evolution. Their descendants are V471 Tauri-type detached binaries, cataclysmic binaries, and possibly Type I supernovae. Thirteen close-binary PNNs are now known from periodic photometric or radial-velocity variations, or from ...
Howard E. Bond +2 more
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Catalogue of planetary nebulae and their nuclei [PDF]
International Astronomical Union Colloquium, 1982 Since the catalogue by Perek and Kohoutek (PK) has been printed in 1967, numerous observations and theoretical studies have been made, and new planetary nebulae (NP) have been discovered, in addition to the 1036 PN indexed by PK. We have compiled a bibliographic index from 1965, covering about 80 papers per year; a catalogue of 1455 PN and a ...
A. Acker, J. Marcout
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