S
S. C. Madden
Researcher at Ames Research Center
Publications - 6
Citations - 438
S. C. Madden is an academic researcher from Ames Research Center. The author has contributed to research in topics: Molecular cloud & Galaxy. The author has an hindex of 4, co-authored 6 publications receiving 432 citations. Previous affiliations of S. C. Madden include Max Planck Society.
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Journal ArticleDOI
Neutral gas in the central 2 parsecs of the Galaxy
James M. Jackson,N. Geis,Reinhard Genzel,Andrew I. Harris,S. C. Madden,Albrecht Poglitsch,Gordon J. Stacey,Charles H. Townes +7 more
TL;DR: In this article, the spatial distribution, kinematics, and density structure of atomic and molecular gas within about 2 p from IRS 16/SgrA was investigated and it was shown that a dense clumpy molecular gas ring surrounding a short-lived central cavity of much lower mean gas density.
Neutral gas in the central 2 parsecs of the Galaxy
James M. Jackson,N. Geis,Reinhard Genzel,Andrew I. Harris,S. C. Madden,Albrecht Poglitsch,Gordon J. Stacey,Charles H. Townes +7 more
TL;DR: In this article, the spatial distribution, kinematics, and density structure of atomic and molecular gas within about 2 p from IRS 16/SgrA was investigated and it was shown that a dense clumpy molecular gas ring surrounding a short-lived central cavity of much lower mean gas density.
Journal ArticleDOI
Atomic Oxygen in Molecular Clouds? High-Resolution Spectroscopy of the [O I] 63 Micron Line toward DR 21
Albrecht Poglitsch,F. Herrmann,R. Genzel,S. C. Madden,S. C. Madden,T. Nikola,Ralf Timmermann,N. Geis,Gordon J. Stacey +8 more
TL;DR: In this article, the authors reported the first high-resolution spectra of the [O I] 63 μm fine-structure line toward DR 21 using the FIFI imaging spectrometer.
Journal ArticleDOI
Ultraviolet-illuminated molecular cloud boundaries: Extended (C II) 158 micron emission toward L1630
Daniel T. Jaffe,Shudong Zhou,J. E. Howe,J. E. Howe,F. Herrmann,S. C. Madden,S. C. Madden,Albrecht Poglitsch,P. van der Werf,P. van der Werf,Gordon J. Stacey +10 more
TL;DR: In this paper, a large-scale map of the 158 micrometers C(+) line toward the L1630/Orion B molecular cloud was made, covering a approximately 35 min x 45 min area which includes the NGC 2024 H II region, zeta Ori, the reflection nebula NGC 2023 and the Horsehead nebula.
Extragalactic diffuse (C II) emission
S. C. Madden,N. Geis,Charles H. Townes,R. Genzel,F. Herrmann,Albrecht Poglitsch,Gordon J. Stacey +6 more
TL;DR: The 158 micro m (CII) line has been mapped in the galaxies Centaurus A, M83, NGC 6946, and NGC 891 as discussed by the authors, showing that the emission exists over very large scales, peaking in the nuclei and extending beyond the spiral arms and molecular disks.