Diffuse interstellar bands carriers and cometary organic material★
نویسندگان
چکیده
منابع مشابه
Electron density and carriers of the diffuse interstellar bands
We have used the ionisation equilibrium equation to derive the electron density in in-terstellar clouds in the direction to 13 stars. A linear relation was found, that allows the determination of the electron density from the Mg I and Mg II column densities in interstel-lar medium. The comparison of normalised equivalent width of 12 DIBs with the electron density shows that the DIBs equivalent ...
متن کاملDiffuse Interstellar Bands in single clouds: new families and constraints on the carriers
We present a survey of diffuse interstellar bands (DIBs) in single clouds. High resolution and high S/N observations of DIBs towards lines of sight representing very different environments allow to investigate mutual correlations in a large consistent sample of DIBs. The classification of DIBs into families is reviewed and refined according to these results. We find that the selected 44 DIBs ar...
متن کاملThe diffuse interstellar bands at 5797 , 6379 and 6613 Å Ionization properties of the carriers ?
We present a study of the behaviour and ionization properties of three narrow Diffuse Interstellar Bands (DIBs) at λλ5797, 6379 and 6613Å. In all three DIBs substructures have recently been detected, indicating large gaseous molecular carriers. Studying DIBs in regions with drastically different physical properties in terms of UV flux and density enables us to monitor the behaviour of the carri...
متن کاملDiffuse interstellar bands in RAVE survey spectra
We have used spectra of hot stars from the RAVE Survey in order to investigate the visibility and properties of five diffuse interstellar bands previously reported in the literature. The RAVE spectroscopic survey for Galactic structure and kinematics records CCD spectra covering the 8400–8800 Å wavelength region at 7500 resolving power. The spectra are obtained with the UK Schmidt at the AAO, e...
متن کاملDiffuse Interstellar Bands in NGC 1448 ⋆
We present spectroscopic VLT/UVES observations of two emerging supernovae, the Type Ia SN 2001el and the Type II SN 2003hn, in the spiral galaxy NGC 1448. Our high resolution and high signal-to-noise spectra display atomic lines of Ca , Na , Ti and K in the host galaxy. In the line of sight towards SN 2001el, we also detect over a dozen diffuse interstellar bands (DIBs) within NGC 1448....
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: Monthly Notices of the Royal Astronomical Society
سال: 2017
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stx2231