Reduced upper limits on the equivalent width of interstellar Li I 670.8 towards SN 1987 A

Details Reduced upper limits on the equivalent width of interstellar Li I 670.8 towards SN 1987 A Reduced upper limits on the equivalent width of interstellar Li I 670.8 towards SN 1987 A

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...251..253b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 251, no. 1, Nov. 1991, p. 253-258.

Astronomy and Astrophysics

Astrophysics

5

Interstellar Matter, Lithium, Metallicity, Spectral Line Width, Supernova 1987A, Astronomical Observatories, Magellanic Clouds, Nuclear Fusion

Scientific paper

A new search for interstellar Li I 670.8 along the line of sight to SN 1987 A has been carried out using all 34 known high-resolution Reticon spectra obtained at the European Southern Observatory. The most probably 3-sigma detection limit in equivalent width is 7.3 x 10 exp -6 nm. For the cloud at radial velocity +286 km/s, standard relations then imply a maximum abundance, Li/H, of 1.7 x 10 exp -11 in the gaseous interstellar medium of the LMC. If depletion to dust grains is the same for both lithium and potassium, this figure has to be increased by 1.1 dex. Accordingly, conventional present-day reasoning suggests that the elemental abundance of lithium does not exceed 2.7 x 10 exp -10. However, the cumulative uncertainties are such that a primordial abundance which is an order of magnitude higher is not firmly ruled out. Constraints on primordial nucleosynthesis models are, therefore, only weak.

Affiliated with

Also associated with

No associations

Rating

Reduced upper limits on the equivalent width of interstellar Li I 670.8 towards SN 1987 A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Reduced upper limits on the equivalent width of interstellar Li I 670.8 towards SN 1987 A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduced upper limits on the equivalent width of interstellar Li I 670.8 towards SN 1987 A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1716205