Spectroscopic and photometric observations of SN 1987a: the first 50 days
نویسندگان
چکیده
منابع مشابه
The Ten-Year Photometric Evolution of SN 1987A
Ten years of photometric observations of SN 1987A are reviewed. The optical and near-infrared colors are now declining at ∼ < 1 magnitude per 1000 days, which is consistent with both the infrared “freeze-out” and the possible energy sources powering the nebula. The “uvoir” bolometric luminosity at ten years is estimated to be log10(L) ∼ 36.1−36.4 ergs s . The most recent photometric measurement...
متن کاملTelescope Spectroscopic Observations of the Ejecta of SN 1987 A at 2000 Days 1
We have used the Faint Object Spectrograph on the Hubble Space Telescope to observe the spectra of SN 1987A over the wavelength range 2000 – 8000 Å on dates 1862 and 2210 days after the supernova outburst. Even these pre-COSTAR observations avoid much of the contamination from the bright stars nearby and provide a very useful set of line strengths and shapes for Based on observations with the N...
متن کاملPolarization of SN 1987A Revisited
The conventional picture for the origin of the polarization of a supernova is based on a model of Thomson or resonance scattering of photons traveling through an aspherical supernova atmosphere. Positive detection of intrinsic polarization in SN 1987A is then interpretated as evidence of an asymmetrical supernova atmosphere. We show here a di erent view based on the scattering of the supernova ...
متن کاملX-ray Evolution of SN 1987A
The X-ray observations of SN 1987A over the previous 20 years have seen the emergence of soft X-rays from the interaction of the explosion shock wave with the ambient medium. This shock wave is now interacting strongly with the inner ring and might have passed already the highest density regions. The emission can be described by thermal models with temperatures of ∼0.28 keV and ∼2.8+0.7 −1.0 ke...
متن کاملSN Shock Evolution in the Circumstellar Medium surrounding SN 1987A
We study the structure of the circumstellar medium surrounding SN 1987A in the equatorial plane. Furthermore, we study the evolution of the SN shock within this medium during the first 25 years, and the resulting hard X-ray and radio emission from the remnant.
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1987
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/227.1.39p