| hal.structure.identifier | Observatoire aquitain des sciences de l'univers [OASU] | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| hal.structure.identifier | Université Sciences et Technologies - Bordeaux 1 [UB] | |
| hal.structure.identifier | Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB] | |
| dc.contributor.author | GRATIER, P. | |
| hal.structure.identifier | Observatoire aquitain des sciences de l'univers [OASU] | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| hal.structure.identifier | Université Sciences et Technologies - Bordeaux 1 [UB] | |
| hal.structure.identifier | Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB] | |
| dc.contributor.author | BRAINE, J. | |
| hal.structure.identifier | Observatoire aquitain des sciences de l'univers [OASU] | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| dc.contributor.author | RODRIGUEZ‐FERNANDEZ, Nemesio | |
| hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
| dc.contributor.author | SCHUSTER, K. F. | |
| hal.structure.identifier | Instituto de RadioAstronomía Milimétrica [IRAM] | |
| dc.contributor.author | KRAMER, C. | |
| dc.contributor.author | XILOURIS, E. M. | |
| dc.contributor.author | TABATABAEI, F. S. | |
| hal.structure.identifier | Institut für Physik [Potsdam] | |
| dc.contributor.author | HENKEL, Carsten | |
| dc.contributor.author | CORBELLI, E. | |
| hal.structure.identifier | Leiden Observatory [Leiden] | |
| dc.contributor.author | ISRAEL, F. | |
| dc.contributor.author | VAN DER WERF, P. P. | |
| hal.structure.identifier | Department of Astronomy | |
| dc.contributor.author | CALZETTI, D. | |
| hal.structure.identifier | Observatorio Astronomico Nacional, Madrid | |
| dc.contributor.author | GARCIA-BURILLO, S. | |
| dc.contributor.author | SIEVERS, A. | |
| hal.structure.identifier | Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA] | |
| dc.contributor.author | COMBES, F. | |
| hal.structure.identifier | Onsala Space Observatory | |
| dc.contributor.author | WIKLIND, T. | |
| hal.structure.identifier | Observatoire aquitain des sciences de l'univers [OASU] | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| hal.structure.identifier | Université Sciences et Technologies - Bordeaux 1 [UB] | |
| hal.structure.identifier | Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB] | |
| dc.contributor.author | BROUILLET, N. | |
| hal.structure.identifier | Observatoire aquitain des sciences de l'univers [OASU] | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| hal.structure.identifier | Université Sciences et Technologies - Bordeaux 1 [UB] | |
| hal.structure.identifier | Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB] | |
| dc.contributor.author | HERPIN, Fabrice | |
| hal.structure.identifier | Observatoire aquitain des sciences de l'univers [OASU] | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| hal.structure.identifier | Université Sciences et Technologies - Bordeaux 1 [UB] | |
| hal.structure.identifier | Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB] | |
| dc.contributor.author | BONTEMPS, Sylvain | |
| dc.contributor.author | AALTO, S. | |
| hal.structure.identifier | Australia Telescope National Facility | |
| dc.contributor.author | KORIBALSKI, B. | |
| dc.contributor.author | VAN DER TAK, F. | |
| dc.contributor.author | WIEDNER, M. C. | |
| hal.structure.identifier | KOSMA, | |
| dc.contributor.author | ROELLIG, M. | |
| hal.structure.identifier | KOSMA, I. Physikalisches Institut | |
| dc.contributor.author | MOOKERJEA, B. | |
| dc.date.created | 2010-06-14 | |
| dc.date.issued | 2010 | |
| dc.identifier.issn | 0004-6361 | |
| dc.description.abstractEn | We present high resolution large scale observations of the molecular and atomic gas in the Local Group Galaxy M33. The observations were carried out using the HERA at the 30m IRAM telescope in the CO(2-1) line achieving a resolution of 12"x2.6 km/s, enabling individual GMCs to be resolved. The observed region mainly along the major axis out to a radius of 8.5 kpc, and covers the strip observed with HIFI/PACS Spectrometers as part of the HERM33ES Herschel key program. The achieved sensitivity in main beam temperature is 20-50 mK at 2.6 km/s velocity resolution. The CO(2-1) luminosity of the observed region is 1.7\pm0.1x10^7 Kkm/s pc^2, corresponding to H2 masses of 1.9x10^8 Msun (including He), calculated with a NH2/ICO twice the Galactic value due to the half-solar metallicity of M33. HI 21 cm VLA archive observations were reduced and the mosaic was imaged and cleaned using the multi-scale task in CASA, yielding a series of datacubes with resolutions ranging from 5" to 25". The HI mass within a radius of 8.5 kpc is estimated to be 1.4x10^9 Msun. The azimuthally averaged CO surface brightness decreases exponentially with a scale length of 1.9\pm0.1 kpc whereas the atomic gas surface density is constant at Sigma_HI=6\pm2 Msun/pc^2 deprojected to face-on. The central kiloparsec H_2 surface density is Sigma_H2=8.5\pm0.2 Msun/pc^2. The star formation rate per unit molecular gas (SF Efficiency, the rate of transformation of molecular gas into stars), as traced by the ratio of CO to Halpha and FIR brightness, is constant with radius. The SFE appears 2-4 times greater than of large spiral galaxies. A morphological comparison of molecular and atomic gas with tracers of star formation shows good agreement between these maps both in terms of peaks and holes. A few exceptions are noted. Several spectra, including those of a molecular cloud situated more than 8 kpc from the galaxy center, are presented. | |
| dc.language.iso | en | |
| dc.publisher | EDP Sciences | |
| dc.subject.en | Astrophysics | |
| dc.subject.en | Cosmology and Extragalactic Astrophysics | |
| dc.title.en | Molecular and Atomic Gas in the Local Group Galaxy M33 | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1051/0004-6361/201014441 | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.identifier.arxiv | 1003.3222 | |
| bordeaux.journal | Astronomy and Astrophysics - A&A | |
| bordeaux.page | id.A3 | |
| bordeaux.volume | 522 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00495843 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00495843v1 | |
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