We have used the Arecibo Telescope and the Green Bank Telescope (GBT) to carry out a deep search for Hi 21 cm emission from a large sample of “Green Pea” galaxies, yielding 19 detections, and 21 upper limits on the Hi mass. We obtain Hi masses of M _Hi ≈ (4–300) 10⁸ M _⊙ for the detections, with a median Hi mass of ≈ 2.6 10⁹ M _⊙; for the non-detections, the median 3σ upper limit on the Hi mass is ≈ 5.5 10⁸ M _⊙. These are the first estimates of the atomic gas content of Green Pea galaxies. We find that the Hi-to-stellar mass ratio in Green Peas is consistent with trends identified in star-forming galaxies in the local universe. However, the median Hi depletion timescale in Green Peas is ≈0.6 Gyr, an order of magnitude lower than that obtained in local star-forming galaxies. This implies that Green Peas consume their atomic gas on very short timescales. A significant fraction of the Green Peas of our sample lie ≳0.6 dex (2σ) above the local M _Hi –M _B relation, suggesting recent gas accretion. Further, ≈30% of the Green Peas are more than 2σ deviant from this relation, suggesting possible bimodality in the Green Pea population. We obtain a low Hi 21 cm detection rate in the Green Peas with the highest O32 ≡ [O iii]λ5007/[O ii]λ3727 luminosity ratios, O32 > 10, consistent with the high expected Lyman-continuum leakage from these galaxies.

我们已经使用了阿雷西沃望远镜和青银望远镜（GBT）来进行对h的深搜索我从“绿豌豆”星系的大样本21厘米发射，产生19次检测，并在H 21个上限我质量. 我们获得ħ我的群众中号 _ħ我 ≈（4-300）10 ⁸ 中号 _⊙用于检测，中位ħ我的≈2.6 10质量⁹ 中号 _⊙ ; 对于未检测到的，H i质量的中值 3 σ上限≈ 5.5 10 ⁸ M _⊙ . 这些是对绿豆星系原子气体含量的首次估计。我们发现青豆中的 H i与恒星的质量比与本地宇宙中恒星形成星系中确定的趋势一致。然而，青豆中 H i消耗时间尺度的中值约为 0.6 Gyr，比在当地的恒星形成星系中获得的低一个数量级。这意味着青豆在很短的时间内消耗它们的原子气体。我们样本中的很大一部分青豆位于 ≳0.6 dex (2 σ ) 以上的局部M _{H i} – M _B关系，表明最近的气体吸积。此外，≈30% 的青豆超过 2 σ 偏离这种关系，表明绿豌豆种群中可能存在双峰。我们获得低ħ我在青豌豆21厘米检出率最高O32≡〔O III ] λ 5007 /〔O II ] λ 3727分光度比，O32> 10，则与高一致预期莱曼-连续从这些泄漏星系。