The central star of NGC 1360: a spectroscopic binary within a planetary nebula
نویسندگان
چکیده
منابع مشابه
The central star of the Planetary Nebula NGC 6537
The fact that Space Telescope WFPC2 images of the planetary nebula NGC 6537 fail to show the central star is used to derive a limit to its magnitude: it is fainter than a magnitude of 22.4 in the visible. This is used to derive a lower limit to the temperature of the star. The Zanstra temperature is at least 500 000 K. The Energy Balance temperature is found to be consistent with this value, as...
متن کاملA Far - Ultraviolet Spectroscopic Analysis of the Central Star of the Planetary Nebula Longmore
We have performed a non-LTE spectroscopic analysis using far-UV and UV data of the central star of the planetary nebula K1-26 (Longmore 1) and found kK, cm s , and 0.3 T p 120 10 log g p 6.7 eff 0.7 . The temperature is significantly hotter than previous results based on optical line analyses, highlighting Y 0.10 the importance of analyzing the spectra of such hot objects at shorter wavelengths...
متن کاملMorphological and kinematic signatures of a binary central star in the planetary nebula
We present Hα, [NII] and [OIII] ground-based and HST archive images, VLA–A 3.6 cm continuum and H92α emission line data and high resolution long-slit [NII] spectra of the planetary nebula Hu 2-1. A large number of structural components are identified in the nebula: an outer bipolar and an inner shell, two pairs of collimated bipolar structures at different directions, monopolar bow-shock-like s...
متن کاملThe symmetric dust shell and the central star of the bipolar planetary nebula NGC 6537 ⋆ †
We present high-resolution images of the strongly bipolar planetary nebula NGC 6537, obtained with Hubble Space Telescope and with the infrared adaptive optics system on the Very Large Telescope. The central star is detected for the first time. Using the multi-band photometry and constraints from the dynamical age of the neb-ula, we derive a temperature in the range 1.5–2.5×10 5 K, a luminosity...
متن کاملBinary Central Stars of Planetary Nebula
Only a handful of binary central stars of planetary nebulae (PNe) are known today, due to the difficulty of detecting their companions. Preliminary results from radial velocity surveys, however, seem to indicate that binarity plays a fundamental, rather than marginal role in the evolution of PNe and that the close binary fraction might be much larger than the currently known value of 10-15%. In...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1977
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/178.3.409