Probing isotopic ratios at z = 0.89: molecular line absorption in front of the quasar PKS 1830-211

Abstract

With the Plateau de Bure interferometer, we have measured the C, N, O and S isotopic abundance ratios in the arm of a spiral galaxy with a redshift of 0.89. The galaxy is seen face-on according to HST images. Its bulge intercepts the line of sight to the radio-loud quasar PKS 1830-211, giving rise at mm wavelengths to two Einstein images located each behind a spiral arm. The arms appear in absorption in the lines of several molecules, giving the opportunity to study the chemical composition of a galaxy only a few Gyr old. The isotopic ratios in this spiral galaxy differ markedly from those observed in the Milky Way. The ${}^{17}$O/${}^{18}$O and ${}^{14}$N/${}^{15}$N ratios are low, as one would expect from an object too young to let low mass stars play a major role in the regeneration of the gas.

arXiv commentaccepted in A&A

References in corpus (19)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Detection of doubly-deuterated methanol in the solar-type protostar IRAS16293-2422
• A 2 mm spectral line survey of the starburst galaxy NGC 253
• The Time Delay in the Gravitational Lens PKS 1830-211
• Dense gas in nearby galaxies XVI. The nuclear starburst environment in NGC4945
• Comparative chemistry of diffuse clouds III: sulfur-bearing molecules
• Sulfur chemistry and isotopic ratios in the starburst galaxy NGC 253
• The complex molecular absorption line system at z=0.886 towards PKS1830-211
• The redshift of the gravitationally lensed radio source PKS1830-211
• PKS 1830-211: A Face-On Spiral Galaxy Lens
• Detection of water at z = 0.685 towards B0218+357
• PKS 1830-211: A Possible Compound Gravitational Lens
• The kinetic temperature of a molecular cloud at redshift 0.7: Ammonia in the gravitational lens B0218+357
• The detection of extragalactic ${}^{15}$N: Consequences for nitrogen nucleosynthesis and chemical evolution
• The interstellar C18O/C17O ratio in the solar neighbourhood: The rho Oph cloud
• Redshifted molecular absorption systems towards PKS1830-211 and B0218+357: submillimeter CO, CI and H2O data
• Oxygen isotopic ratios in galactic clouds along the line of sight towards Sagittarius B2
• Spatially Resolved Millimeter Spectroscopy of the Gravitational Lens PKS 1830-211
• Gas and Dust in Protogalaxies

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