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The interstellar abundances of tin and four other heavy elements

1993; IOP Publishing; Volume: 411; Linguagem: Inglês

10.1086/172876

1538-4357

L. M. Hobbs, D. E. Welty, D. C. Morton, Lyman Spitzer, Donald G. York,

Atomic and Molecular Physics

view Abstract Citations (57) References (33) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Interstellar Abundances of Tin and Four Other Heavy Elements Hobbs, L. M. ; Welty, D. E. ; Morton, D. C. ; Spitzer, L. ; York, D. G. Abstract Spectra recorded at 1150-1600 A with an instrumental resolution near 16 km/s were obtained with the Goddard High-Resolution Spectrograph on board the HST. The gaseous interstellar abundances of five heavy elements along the light paths to 23 Ori, 15 Mon, 1 Sco, Pi Sco, and Pi Aqr were determined from the observations. The 1400.450 A line of Sn II was detected and identified toward three stars; at Z = 50, tin is the first element from the fifth row of the periodic table to be identified in the interstellar medium. One spectral line of each of Cu II (Z = 29) and Ga II (Z = 31), three lines of Ge II (Z = 32), and two lines of Kr I (Z = 36) were also detected toward some or all of the five stars. The depletions of these five heavy elements generally decrease monotonically with increasing atomic number toward each of the six stars, and tin is generally undepleted within the observational errors. The depletions of 26 elements from the interstellar gas in an average dense interstellar cloud appear to correlate with the elemental 'nebular' condensation temperatures more closely than with the first ionization potentials. Publication: The Astrophysical Journal Pub Date: July 1993 DOI: 10.1086/172876 Bibcode: 1993ApJ...411..750H Keywords: Abundance; Heavy Elements; Interstellar Matter; Nuclear Fusion; Nuclear Reactions; Tin; High Resolution; Hubble Space Telescope; Spectrographs; Astrophysics; ATOMIC DATA; NUCLEAR REACTIONS; NUCLEOSYNTHESIS; ABUNDANCES; ISM: ABUNDANCES; ISM: ATOMS; ISM: CLOUDS full text sources ADS | data products SIMBAD (8) MAST (1) ESA (1)