12CO emission from the Red Rectangle
نویسندگان
چکیده
منابع مشابه
Atomic and Molecular Emission Lines from the Red Rectangle
HD 44179 is the binary, post–asymptotic giant branch, central star of the Red Rectangle Nebula. Echelle spectra of the star have been obtained over a wavelength range from about 3800 to 10000 8 at a resolving power R 1⁄4 38; 000. A maximum S/N of 850 was achieved near 6800 8. Fifty-seven identified atomic or ionic emission lines of 12 elements are detected in the star’s spectrum, along with 76 ...
متن کاملSequence Structure Emission in the Red Rectangle Bands
We report high resolution (R∼37,000) integral field spectroscopy of the central region (r<14 arcsec) of the Red Rectangle nebula surrounding HD44179. The observations focus on the λ5800Å emission feature, the bluest of the yellow/red emission bands in the Red Rectangle. We propose that the emission feature, widely believed to be a molecular emission band, is not a molecular rotation contour, bu...
متن کاملThe 3 . 3 μ m PAH emission band of the Red Rectangle
A new analysis of long-slit CGS4 (UKIRT) spectra of the 3.3μm feature of the Red Rectangle and its evolution with offset along the NW whisker of the nebula is presented. The results support a proposed two-component interpretation for the 3.3μm feature with peak wavelengths near 3.28μm and 3.30μm. Both components exhibit a small shift to shorter wavelength with increasing offset from the central...
متن کاملComparing Eta Carinae with the Red Rectangle
I compare the structures of the bipolar nebulae around the massive binary system η Carinae and around the low mass binary system HD 44179. While η Carinae is on its way to become a supernova, the Red Rectangle is on its way to form a planetary nebula. Despite the two orders of magnitude difference in mass, these two systems show several similarities, both in the properties of the stellar binary...
متن کاملThe ERE of the “ Red Rectangle ” revisited
We present in this paper high signal-to-noise long-slit optical spectra of the Extended Red Emission (ERE) in the “Red Rectangle” (RR) nebula. These spectra, obtained at different positions in the nebula, reveal an extremely complex emission pattern on top of the broad ERE continuum. It is well known that three features converge at large distance from the central object, in wavelength and profi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Research in Astronomy and Astrophysics
سال: 2015
ISSN: 1674-4527
DOI: 10.1088/1674-4527/15/12/009