2010A&A...518L..37P


Query : 2010A&A...518L..37P

2010A&A...518L..37P - Astronomy and Astrophysics, volume 518, L37-37 (2010/7-2)

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

PANUZZO P., RANGWALA N., RYKALA A., ISAAK K.G., GLENN J., WILSON C.D., AULD R., BAES M., BARLOW M.J., BENDO G.J., BOCK J.J., BOSELLI A., BRADFORD M., BUAT V., CASTRO-RODRIGUEZ N., CHANIAL P., CHARLOT S., CIESLA L., CLEMENTS D.L., COORAY A., CORMIER D., CORTESE L., DAVIES J.I., DWEK E., EALES S.A., ELBAZ D., FULTON T., GALAMETZ M., GALLIANO F., GEAR W.K., GOMEZ H.L., GRIFFIN M., HONY S., LEVENSON L.R., LU N., MADDEN S., O'HALLORAN B., OKUMURA K., OLIVER S., PAGE M.J., PAPAGEORGIOU A., PARKIN T.J., PEREZ-FOURNON I., POHLEN M., POLEHAMPTON E.T., RIGBY E.E., ROUSSEL H., SACCHI N., SAUVAGE M., SCHULZ B., SCHIRM M.R.P., SMITH M.W.L., SPINOGLIO L., STEVENS J.A., SRINIVASAN S., SYMEONIDIS M., SWINYARD B., TRICHAS M., VACCARI M., VIGROUX L., WOZNIAK H., WRIGHT G.S. and ZEILINGER W.W.

Abstract (from CDS):

We present the observations of the starburst galaxy M82 taken with the Herschel SPIRE Fourier-transform spectrometer. The spectrum (194-671µm) 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 12CO and 13CO lines strongly indicates a very warm molecular gas component at ∼500K and pressure of ∼3x106K/cm3, in good agreement with the H2 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.

Abstract Copyright:

Journal keyword(s): galaxies: ISM - galaxies: starburst - galaxies: individual: M82 - ISM: molecules - submillimeter: galaxies

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4261 3
2 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5677 6
3 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 741 0
4 Mrk 231 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 1930 3

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2023.01.31-02:32:55

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