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The PdBI Arcsecond Whirlpool Survey (PAWS), I : a cloud-scale/multi-wavelenght view of the interstellar medium in a grand-design spiral galaxy

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Abstract
The Plateau de Bure Interferometer Arcsecond Whirlpool Survey has mapped the molecular gas in the central similar to 9 kpc of M51 in its (CO)-C-12(1-0) line emission at a cloud-scale resolution of similar to 40 pc using both IRAM telescopes. We utilize this data set to quantitatively characterize the relation of molecular gas (or CO emission) to other tracers of the interstellar medium, star formation, and stellar populations of varying ages. Using two-dimensional maps, a polar cross-correlation technique and pixel-by-pixel diagrams, we find: (1) that (as expected) the distribution of the molecular gas can be linked to different components of the gravitational potential; (2) evidence for a physical link between CO line emission and radio continuum that seems not to be caused by massive stars, but rather depends on the gas density; (3) a close spatial relation between polycyclic aromatic hydrocarbon (PAH) and molecular gas emission, but no predictive power of PAH emission for the molecular gas mass; (4) that the I-H color map is an excellent predictor of the distribution (and to a lesser degree, the brightness) of CO emission; and (5) that the impact of massive (UV-intense) young star-forming regions on the bulk of the molecular gas in central similar to 9 kpc cannot be significant due to a complex spatial relation between molecular gas and star-forming regions that ranges from cospatial to spatially offset to absent. The last point, in particular, highlights the importance of galactic environment-and thus the underlying gravitational potential-for the distribution of molecular gas and star formation.
Keywords
GIANT MOLECULAR CLOUDS, RADIO-CONTINUUM EMISSION, STAR-FORMATION LAW, POLYCYCLIC AROMATIC-HYDROCARBONS, HUBBLE-SPACE-TELESCOPE, SPATIALLY-RESOLVED CHEMISTRY, NEARBY DISK GALAXIES, INTER-STELLAR, CLOUDS, GAS DEPLETION TIME, FAR-INFRARED LINE, galaxies: individual (NGC 5194), galaxies: ISM

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MLA
Schinnerer, Eva, et al. “The PdBI Arcsecond Whirlpool Survey (PAWS), I : A Cloud-Scale/Multi-Wavelenght View of the Interstellar Medium in a Grand-Design Spiral Galaxy.” ASTROPHYSICAL JOURNAL, vol. 779, no. 1, 2013.
APA
Schinnerer, E., van der Wel, S. M., Pety, J., Hughes, A., Colombo, D., Garcia-Burillo, S., … Regan, M. W. (2013). The PdBI Arcsecond Whirlpool Survey (PAWS), I : a cloud-scale/multi-wavelenght view of the interstellar medium in a grand-design spiral galaxy. ASTROPHYSICAL JOURNAL, 779(1).
Chicago author-date
Schinnerer, Eva, Sharon Meidt van der Wel, Jerome Pety, Annie Hughes, Dario Colombo, Santiago Garcia-Burillo, Karl F Schuster, et al. 2013. “The PdBI Arcsecond Whirlpool Survey (PAWS), I : A Cloud-Scale/Multi-Wavelenght View of the Interstellar Medium in a Grand-Design Spiral Galaxy.” ASTROPHYSICAL JOURNAL 779 (1).
Chicago author-date (all authors)
Schinnerer, Eva, Sharon Meidt van der Wel, Jerome Pety, Annie Hughes, Dario Colombo, Santiago Garcia-Burillo, Karl F Schuster, Gaelle Dumas, Clare L Dobbs, Adam K Leroy, Carsten Kramer, Todd A Thompson, and Michael W Regan. 2013. “The PdBI Arcsecond Whirlpool Survey (PAWS), I : A Cloud-Scale/Multi-Wavelenght View of the Interstellar Medium in a Grand-Design Spiral Galaxy.” ASTROPHYSICAL JOURNAL 779 (1).
Vancouver
1.
Schinnerer E, van der Wel SM, Pety J, Hughes A, Colombo D, Garcia-Burillo S, et al. The PdBI Arcsecond Whirlpool Survey (PAWS), I : a cloud-scale/multi-wavelenght view of the interstellar medium in a grand-design spiral galaxy. ASTROPHYSICAL JOURNAL. 2013;779(1).
IEEE
[1]
E. Schinnerer et al., “The PdBI Arcsecond Whirlpool Survey (PAWS), I : a cloud-scale/multi-wavelenght view of the interstellar medium in a grand-design spiral galaxy,” ASTROPHYSICAL JOURNAL, vol. 779, no. 1, 2013.
@article{8622320,
  abstract     = {The Plateau de Bure Interferometer Arcsecond Whirlpool Survey has mapped the molecular gas in the central similar to 9 kpc of M51 in its (CO)-C-12(1-0) line emission at a cloud-scale resolution of similar to 40 pc using both IRAM telescopes. We utilize this data set to quantitatively characterize the relation of molecular gas (or CO emission) to other tracers of the interstellar medium, star formation, and stellar populations of varying ages. Using two-dimensional maps, a polar cross-correlation technique and pixel-by-pixel diagrams, we find: (1) that (as expected) the distribution of the molecular gas can be linked to different components of the gravitational potential; (2) evidence for a physical link between CO line emission and radio continuum that seems not to be caused by massive stars, but rather depends on the gas density; (3) a close spatial relation between polycyclic aromatic hydrocarbon (PAH) and molecular gas emission, but no predictive power of PAH emission for the molecular gas mass; (4) that the I-H color map is an excellent predictor of the distribution (and to a lesser degree, the brightness) of CO emission; and (5) that the impact of massive (UV-intense) young star-forming regions on the bulk of the molecular gas in central similar to 9 kpc cannot be significant due to a complex spatial relation between molecular gas and star-forming regions that ranges from cospatial to spatially offset to absent. The last point, in particular, highlights the importance of galactic environment-and thus the underlying gravitational potential-for the distribution of molecular gas and star formation.},
  articleno    = {42},
  author       = {Schinnerer, Eva and van der Wel, Sharon Meidt and Pety, Jerome and Hughes, Annie and Colombo, Dario and Garcia-Burillo, Santiago and Schuster, Karl F and Dumas, Gaelle and Dobbs, Clare L and Leroy, Adam K and Kramer, Carsten and Thompson, Todd A and Regan, Michael W},
  issn         = {0004-637X},
  journal      = {ASTROPHYSICAL JOURNAL},
  keywords     = {GIANT MOLECULAR CLOUDS,RADIO-CONTINUUM EMISSION,STAR-FORMATION LAW,POLYCYCLIC AROMATIC-HYDROCARBONS,HUBBLE-SPACE-TELESCOPE,SPATIALLY-RESOLVED CHEMISTRY,NEARBY DISK GALAXIES,INTER-STELLAR,CLOUDS,GAS DEPLETION TIME,FAR-INFRARED LINE,galaxies: individual (NGC 5194),galaxies: ISM},
  language     = {eng},
  number       = {1},
  pages        = {29},
  title        = {The PdBI Arcsecond Whirlpool Survey (PAWS), I : a cloud-scale/multi-wavelenght view of the interstellar medium in a grand-design spiral galaxy},
  url          = {http://dx.doi.org/10.1088/0004-637X/779/1/42},
  volume       = {779},
  year         = {2013},
}

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