The Equilibrium of CH and CH+ in Interstellar Space

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Ch-ch-ch-ch-Changes

Change is not made without inconvenience, even from worse to better. Richard Hooker, as quoted in the preface of Samuel Johnson's A Dictionary of the English Language Oh, so they have internet on computers now! Homer Simpson It is with great pleasure that I announce the rebirth of the former print journal of the Canadian Geriatrics Society as a new online publication, the Canadian Geriatrics Jo...

متن کامل

Interstellar CH+ in southern OB associations

Optical absorption line observations of interstellar CH+ andCHare presented towards the southernOBassociations CMa OB1,NGC 2439,Vela OB1,NGC 4755, andCen OB1.A total of 5–11 stars per associationwere observed, with visual extinctions ranging fromAV = 0.5–4.5 mag. The derived CH+ and CH velocities agree within the measurement errors. Towards a particular association, the CH+ column densityN (CH+...

متن کامل

Chiral molecule formation in interstellar ice analogs: alpha-aminoethanol NH 2 CH(CH 3 )OH

Aims. Aminoalcohol molecules such as alpha-aminoethanol NH2CH(CH3)OH may be aminoacid precursors. We attempt to characterize and detect this kind of molecules which is important to establish a possible link between interstellar molecules and life as we know it on Earth. Methods. We use Fourier transform infrared (FTIR) spectroscopy and mass spectrometry to study the formation of alphaaminoethan...

متن کامل

Hubble Space Telescope Measurements of Vacuum Ultraviolet Lines of Interstellar Ch

Three interstellar absorption lines near 13708 seen toward Oph have been assigned byWatson to Rydberg transitions in theGYX (or 3dYX ) band of CH. Our survey of a dozen diffuse interstellar lines of sight shows that the three absorption lines are consistent with the known column densities of CH, by deriving the following oscillator strengths: f (1368:74) 1⁄4 0:019 0:003, f (1369:13) 1⁄4 0:030 0...

متن کامل

Interstellar C2 absorption lines towards CH+ forming regions

Interstellar C2 absorption line observations towards the southern OB associations NGC 2439, Vela OB1, and Cen OB1 are used to infer gaskinetic temperatures Tkin and densities nc towards lines of sight with previously determined large CH and CH+ column densities. Towards NGC 2439, the material is characterised by temperatures of Tkin = 75–85 K and densities exceeding nc > 1000 cm−3, and a fracti...

متن کامل

ذخیره 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: 1962

ISSN: 0035-8711,1365-2966

DOI: 10.1093/mnras/124.2.155