Shock Excited Molecules in NGC 1266: ULIRG Conditions at the Center of a Bulge-dominated Galaxy

E.W. Pellegrini; J.D. Smith; M.G. Wolfire; B.T. Draine; A.F. Crocker; K.V. Croxall; P. van der Werf; D.A. Dale; D. Rigopoulou; C.D. Wilson; E. Schinnerer; B.A. Groves; K. Kreckel; K.M. Sandstrom; L. Armus; D. Calzetti; E. J. Murphy; F. Walter; J. Koda; E. Bayet; P. Beirao; A. D. Bolatto; M. Bradford; E. Brinks; L. Hunt; R. Kennicutt; J.H. Knapen; A.K. Leroy; E. Rosolowsky; L. Vigroux; R.H.B. Hopwood

doi:10.1088/2041-8205/779/2/L19

Shock Excited Molecules in NGC 1266: ULIRG Conditions at the Center of a Bulge-dominated Galaxy

E.W. Pellegrini, J.D. Smith, M.G. Wolfire, B.T. Draine, A.F. Crocker, K.V. Croxall, P. van der Werf, D.A. Dale, D. Rigopoulou, C.D. Wilson, E. Schinnerer, B.A. Groves, K. Kreckel, K.M. Sandstrom, L. Armus, D. Calzetti, E. J. Murphy, F. Walter, J. Koda, E. BayetP. Beirao, A. D. Bolatto, M. Bradford, E. Brinks, L. Hunt, R. Kennicutt, J.H. Knapen, A.K. Leroy, E. Rosolowsky, L. Vigroux, R.H.B. Hopwood

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Abstract

We investigate the far infrared (IR) spectrum of NGC 1266, a S0 galaxy that contains a massive reservoir of highly excited molecular gas. Using the Herschel Fourier Transform Spectrometer, we detect the ¹²CO ladder up to J = (13-12), [C I] and [N II] lines, and also strong water lines more characteristic of UltraLuminous IR Galaxies (ULIRGs). The ¹²CO line emission is modeled with a combination of a low-velocity C-shock and a photodissociation region. Shocks are required to produce the H₂O and most of the high-J CO emission. Despite having an IR luminosity 30 times less than a typical ULIRG, the spectral characteristics and physical conditions of the interstellar medium of NGC 1266 closely resemble those of ULIRGs, which often harbor strong shocks and large-scale outflows

Original language	English
Pages (from-to)	L19
Number of pages	6
Journal	Astrophysical Journal Letters
Volume	779
Issue number	2
DOIs	https://doi.org/10.1088/2041-8205/779/2/L19
Publication status	Published - Dec 2013

Keywords

galaxies: individual: NGC 1266, infrared: ISM, ISM: jets and outflows, ISM: lines and bands, ISM: molecules, photon-dominated region: PDR

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10.1088/2041-8205/779/2/L19

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Pellegrini, E. W., Smith, J. D., Wolfire, M. G., Draine, B. T., Crocker, A. F., Croxall, K. V., van der Werf, P., Dale, D. A., Rigopoulou, D., Wilson, C. D., Schinnerer, E., Groves, B. A., Kreckel, K., Sandstrom, K. M., Armus, L., Calzetti, D., Murphy, E. J., Walter, F., Koda, J., ... Hopwood, R. H. B. (2013). Shock Excited Molecules in NGC 1266: ULIRG Conditions at the Center of a Bulge-dominated Galaxy. Astrophysical Journal Letters, 779(2), L19. https://doi.org/10.1088/2041-8205/779/2/L19

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title = "Shock Excited Molecules in NGC 1266: ULIRG Conditions at the Center of a Bulge-dominated Galaxy",

abstract = "We investigate the far infrared (IR) spectrum of NGC 1266, a S0 galaxy that contains a massive reservoir of highly excited molecular gas. Using the Herschel Fourier Transform Spectrometer, we detect the 12CO ladder up to J = (13-12), [C I] and [N II] lines, and also strong water lines more characteristic of UltraLuminous IR Galaxies (ULIRGs). The 12CO line emission is modeled with a combination of a low-velocity C-shock and a photodissociation region. Shocks are required to produce the H2O and most of the high-J CO emission. Despite having an IR luminosity 30 times less than a typical ULIRG, the spectral characteristics and physical conditions of the interstellar medium of NGC 1266 closely resemble those of ULIRGs, which often harbor strong shocks and large-scale outflows",

keywords = "galaxies: individual: NGC 1266, infrared: ISM, ISM: jets and outflows, ISM: lines and bands, ISM: molecules, photon-dominated region: PDR",

author = "E.W. Pellegrini and J.D. Smith and M.G. Wolfire and B.T. Draine and A.F. Crocker and K.V. Croxall and {van der Werf}, P. and D.A. Dale and D. Rigopoulou and C.D. Wilson and E. Schinnerer and B.A. Groves and K. Kreckel and K.M. Sandstrom and L. Armus and D. Calzetti and Murphy, {E. J.} and F. Walter and J. Koda and E. Bayet and P. Beirao and Bolatto, {A. D.} and M. Bradford and E. Brinks and L. Hunt and R. Kennicutt and J.H. Knapen and A.K. Leroy and E. Rosolowsky and L. Vigroux and R.H.B. Hopwood",

year = "2013",

month = dec,

doi = "10.1088/2041-8205/779/2/L19",

language = "English",

volume = "779",

pages = "L19",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "IOP Publishing Ltd.",

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Pellegrini, EW, Smith, JD, Wolfire, MG, Draine, BT, Crocker, AF, Croxall, KV, van der Werf, P, Dale, DA, Rigopoulou, D, Wilson, CD, Schinnerer, E, Groves, BA, Kreckel, K, Sandstrom, KM, Armus, L, Calzetti, D, Murphy, EJ, Walter, F, Koda, J, Bayet, E, Beirao, P, Bolatto, AD, Bradford, M, Brinks, E, Hunt, L, Kennicutt, R, Knapen, JH, Leroy, AK, Rosolowsky, E, Vigroux, L & Hopwood, RHB 2013, 'Shock Excited Molecules in NGC 1266: ULIRG Conditions at the Center of a Bulge-dominated Galaxy', Astrophysical Journal Letters, vol. 779, no. 2, pp. L19. https://doi.org/10.1088/2041-8205/779/2/L19

TY - JOUR

T1 - Shock Excited Molecules in NGC 1266

T2 - ULIRG Conditions at the Center of a Bulge-dominated Galaxy

AU - Pellegrini, E.W.

AU - Smith, J.D.

AU - Wolfire, M.G.

AU - Draine, B.T.

AU - Crocker, A.F.

AU - Croxall, K.V.

AU - van der Werf, P.

AU - Dale, D.A.

AU - Rigopoulou, D.

AU - Wilson, C.D.

AU - Schinnerer, E.

AU - Groves, B.A.

AU - Kreckel, K.

AU - Sandstrom, K.M.

AU - Armus, L.

AU - Calzetti, D.

AU - Murphy, E. J.

AU - Walter, F.

AU - Koda, J.

AU - Bayet, E.

AU - Beirao, P.

AU - Bolatto, A. D.

AU - Bradford, M.

AU - Brinks, E.

AU - Hunt, L.

AU - Kennicutt, R.

AU - Knapen, J.H.

AU - Leroy, A.K.

AU - Rosolowsky, E.

AU - Vigroux, L.

AU - Hopwood, R.H.B.

PY - 2013/12

Y1 - 2013/12

N2 - We investigate the far infrared (IR) spectrum of NGC 1266, a S0 galaxy that contains a massive reservoir of highly excited molecular gas. Using the Herschel Fourier Transform Spectrometer, we detect the 12CO ladder up to J = (13-12), [C I] and [N II] lines, and also strong water lines more characteristic of UltraLuminous IR Galaxies (ULIRGs). The 12CO line emission is modeled with a combination of a low-velocity C-shock and a photodissociation region. Shocks are required to produce the H2O and most of the high-J CO emission. Despite having an IR luminosity 30 times less than a typical ULIRG, the spectral characteristics and physical conditions of the interstellar medium of NGC 1266 closely resemble those of ULIRGs, which often harbor strong shocks and large-scale outflows

AB - We investigate the far infrared (IR) spectrum of NGC 1266, a S0 galaxy that contains a massive reservoir of highly excited molecular gas. Using the Herschel Fourier Transform Spectrometer, we detect the 12CO ladder up to J = (13-12), [C I] and [N II] lines, and also strong water lines more characteristic of UltraLuminous IR Galaxies (ULIRGs). The 12CO line emission is modeled with a combination of a low-velocity C-shock and a photodissociation region. Shocks are required to produce the H2O and most of the high-J CO emission. Despite having an IR luminosity 30 times less than a typical ULIRG, the spectral characteristics and physical conditions of the interstellar medium of NGC 1266 closely resemble those of ULIRGs, which often harbor strong shocks and large-scale outflows

KW - galaxies: individual: NGC 1266, infrared: ISM, ISM: jets and outflows, ISM: lines and bands, ISM: molecules, photon-dominated region: PDR

U2 - 10.1088/2041-8205/779/2/L19

DO - 10.1088/2041-8205/779/2/L19

M3 - Article

SN - 2041-8205

VL - 779

SP - L19

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 2

ER -

Shock Excited Molecules in NGC 1266: ULIRG Conditions at the Center of a Bulge-dominated Galaxy

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