Advanced search
1 file | 247.27 KB

Probing the molecular interstellar medium of M82 with Herschel-SPIRE spectroscopy

Author
Organization
Abstract
We present the observations of the starburst galaxy M82 taken with the Herschel SPIRE Fourier-transform spectrometer. The spectrum (194-671 mu m) shows a prominent CO rotational ladder from J = 4-3 to 13-12 emitted by the central region of M82. The fundamental properties of the gas are well constrained by the high J lines observed for the first time. Radiative transfer modeling of these high-S/N (CO)-C-12 and (CO)-C-13 lines strongly indicates a very warm molecular gas component at similar to 500 K and pressure of similar to 3 x 10(6) K cm(-3), in good agreement with the H-2 rotational lines measurements from Spitzer and ISO. We suggest that this warm gas is heated by dissipation of turbulence in the interstellar medium (ISM) rather than X-rays or UV flux from the straburst. This paper illustrates the promise of the SPIRE FTS for the study of the ISM of nearby galaxies.
Keywords
galaxies: individual: M82, ISM: molecules, galaxies: starburst, galaxies: ISM, submillimeter: galaxies, STARBURST GALAXY M82, THERMAL BALANCE, CLOUDS, GAS, EMISSION, LINE, TEMPERATURE, CO, TURBULENCE, NUCLEUS

Downloads

  • Panuzzo et al. 2010.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 247.27 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Panuzzo, P, N Rangwala, A Rykala, KG Isaak, J Glenn, CD Wilson, R Auld, et al. 2010. “Probing the Molecular Interstellar Medium of M82 with Herschel-SPIRE Spectroscopy.” Astronomy & Astrophysics 518.
APA
Panuzzo, P., Rangwala, N., Rykala, A., Isaak, K., Glenn, J., Wilson, C., Auld, R., et al. (2010). Probing the molecular interstellar medium of M82 with Herschel-SPIRE spectroscopy. ASTRONOMY & ASTROPHYSICS, 518.
Vancouver
1.
Panuzzo P, Rangwala N, Rykala A, Isaak K, Glenn J, Wilson C, et al. Probing the molecular interstellar medium of M82 with Herschel-SPIRE spectroscopy. ASTRONOMY & ASTROPHYSICS. 2010;518.
MLA
Panuzzo, P, N Rangwala, A Rykala, et al. “Probing the Molecular Interstellar Medium of M82 with Herschel-SPIRE Spectroscopy.” ASTRONOMY & ASTROPHYSICS 518 (2010): n. pag. Print.
@article{1236352,
  abstract     = {We present the observations of the starburst galaxy M82 taken with the Herschel SPIRE Fourier-transform spectrometer. The spectrum (194-671 mu m) shows a prominent CO rotational ladder from J = 4-3 to 13-12 emitted by the central region of M82. The fundamental properties of the gas are well constrained by the high J lines observed for the first time. Radiative transfer modeling of these high-S/N (CO)-C-12 and (CO)-C-13 lines strongly indicates a very warm molecular gas component at similar to 500 K and pressure of similar to 3 x 10(6) K cm(-3), in good agreement with the H-2 rotational lines measurements from Spitzer and ISO. We suggest that this warm gas is heated by dissipation of turbulence in the interstellar medium (ISM) rather than X-rays or UV flux from the straburst. This paper illustrates the promise of the SPIRE FTS for the study of the ISM of nearby galaxies.},
  articleno    = {L37},
  author       = {Panuzzo, P and Rangwala, N and Rykala, A and Isaak, KG and Glenn, J and Wilson, CD and Auld, R and Baes, Maarten and Barlow, MJ and Bendo, GJ and Bock, JJ and Boselli, A and Bradford, M and Buat, V and Castro-Rodriguez, N and Chanial, P and Charlot, S and Ciesla, L and Clements, DL and Cooray, A and Cormier, D and Cortese, L and Davies, JI and Dwek, E and Eales, SA and Elbaz, D and Fulton, T and Galametz, M and Galliano, F and Gear, WK and Gomez, HL and Griffin, M and Hony, S and Levenson, LR and Lu, N and Madden, S and O'Halloran, B and Okumura, K and Oliver, S and Page, MJ and Papageorgiou, A and Parkin, TJ and Perez-Fournon, I and Pohlen, M and Polehampton, ET and Rigby, EE and Roussel, H and Sacchi, N and Sauvage, M and Schulz, B and Schirm, MRP and Smith, MWL and Spinoglio, L and Stevens, JA and Srinivasan, S and Symeonidis, M and Swinyard, B and Trichas, M and Vaccari, M and Vigroux, L and Wozniak, H and Wright, GS and Zeilinger, WW},
  issn         = {0004-6361},
  journal      = {ASTRONOMY \& ASTROPHYSICS},
  language     = {eng},
  pages        = {5},
  title        = {Probing the molecular interstellar medium of M82 with Herschel-SPIRE spectroscopy},
  url          = {http://dx.doi.org/10.1051/0004-6361/201014558},
  volume       = {518},
  year         = {2010},
}

Altmetric
View in Altmetric
Web of Science
Times cited: