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- W3106008906 abstract "SDSS J083942.11+380526.3 is an Iron Low-ionization Broad Absorption Line (FeLoBAL) quasar at |$z=2.3$|, and Aoki et al. (2006) recently found the presence of an H|$alpha$| absorption line in the broad H|$alpha$| emission line. Motivated by an idea that this quasar may be a huge molecular gas reservoir in the early phase of quasar evolution, we made CO(|$J=3$|–|$2$|) observations of it using the Nobeyama Millimeter Array. No significant CO emission was detected; although an emission-like feature (|$2.5sigma$|) was seen close (|$sim 2^{primeprime}$|) to the quasar, we regard it as noise. The obtained 3|$sigma$| upper limit on the CO luminosity is |$L^{prime}_{{rm CO}(J=3mbox{-}2)} = 4.5 times 10^{10}$| K km s|$^{-1}$| pc|$^2$|, which corresponds to |$M({rm H}_2) = 3.6 times 10^{10} M_{odot}$| if we adopt CO-to-H|$_2$| conversion factor of 0.8 |$M_{odot}$| (K km s|$^{-1}$| pc|$^2)^{-1}$|. This upper limit is comparable to |$L^{prime}_{{rm CO}(J=3mbox{-}2)}$| (and thus the molecular gas mass) detected in quasars and BAL quasars at |$z=1$|-3, and no sign of the presence of the huge amount of molecular gas in this FeLoBAL quasar was obtained." @default.
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- W3106008906 date "2007-06-25" @default.
- W3106008906 modified "2023-10-16" @default.
- W3106008906 title "CO Observations of a FeLoBAL Quasar with an Hα $alpha$ Absorption Line at z = 2.3: Fig. 1" @default.
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- W3106008906 doi "https://doi.org/10.1093/pasj/59.3.527" @default.
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