The First Hi-GAL Observations of the Outer Galaxy: A Look at Star Formation in the Third Galactic Quadrant in the Longitude Range 216.°5 <~ l <~ 225.°5
| dc.contributor.author | ELIA, D. | |
| hal.structure.identifier | Istituto di Fisica dello Spazio Interplanetario [IFSI] | |
| dc.contributor.author | MOLINARI, S. | |
| dc.contributor.author | FUKUI, Y. | |
| dc.contributor.author | SCHISANO, E. | |
| hal.structure.identifier | Antarctic Research a European Network for Astrophysics [ARENA] | |
| dc.contributor.author | OLMI, L. | |
| dc.contributor.author | VENEZIANI, M. | |
| dc.contributor.author | HAYAKAWA, T. | |
| dc.contributor.author | PESTALOZZI, M. | |
| hal.structure.identifier | FORMATION STELLAIRE 2013 | |
| dc.contributor.author | SCHNEIDER, N. | |
| hal.structure.identifier | Institut de Planétologie et d'Astrophysique de Grenoble [IPAG ] | |
| dc.contributor.author | BENEDETTINI, M. | |
| hal.structure.identifier | foreign laboratories [FL] | |
| dc.contributor.author | DI GIORGIO, A. M. | |
| dc.contributor.author | IKHENAODE, D. | |
| dc.contributor.author | MIZUNO, A. | |
| dc.contributor.author | ONISHI, T. | |
| hal.structure.identifier | Istituto di Fisica dello Spazio Interplanetario [IFSI] | |
| dc.contributor.author | PEZZUTO, S. | |
| dc.contributor.author | PIAZZO, L. | |
| dc.contributor.author | POLYCHRONI, D. | |
| dc.contributor.author | RYGL, K. L. J. | |
| dc.contributor.author | YAMAMOTO, H. | |
| dc.contributor.author | MARUCCIA, Y. | |
| dc.date.created | 2013-04-27 | |
| dc.date.issued | 2013 | |
| dc.identifier.issn | 0004-637X | |
| dc.description.abstractEn | We present the first Herschel PACS and SPIRE photometric observations in a portion of the outer Galaxy ($216.5^{\circ} \lesssim \ell \lesssim 225.5^{\circ}$ and $-2^{\circ} \lesssim b \lesssim 0^{\circ}$) as a part of the Hi-GAL survey. The maps between 70 and 500 $\mu$m, the derived column density and temperature maps, and the compact source catalog are presented. NANTEN CO(1-0) line observations are used to derive cloud kinematics and distances, so that we can estimate distance-dependent physical parameters of the compact sources (cores and clumps) having a reliable spectral energy distribution, that we separate in 255 proto-stellar and 688 starless. Both typologies are found in association with all the distance components observed in the field, up to $\sim 5.8$ kpc, testifying the presence of star formation beyond the Perseus arm at these longitudes. Selecting the starless gravitationally bound sources we identify 590 pre-stellar candidates. Several sources of both proto- and pre-stellar nature are found to exceed the minimum requirement for being compatible with massive star formation, based on the mass-radius relation. For the pre-stellar sources belonging to the Local arm ($d\lesssim1.5$ kpc) we study the mass function, whose high-mass end shows a power-law $N(\log M) \propto M^{-1.0 \pm 0.2}$. Finally, we use a luminosity vs mass diagram to infer the evolutionary status of the sources, finding that most of the proto-stellar are in the early accretion phase (with some cases compatible with a Class I stage), while for pre-stellar sources, in general, accretion has not started yet. | |
| dc.language.iso | en | |
| dc.publisher | American Astronomical Society | |
| dc.subject.en | Galaxy: structure | |
| dc.subject.en | infrared: ISM | |
| dc.subject.en | ISM: clouds | |
| dc.subject.en | ISM: molecules | |
| dc.subject.en | stars: formation | |
| dc.title.en | The First Hi-GAL Observations of the Outer Galaxy: A Look at Star Formation in the Third Galactic Quadrant in the Longitude Range 216.°5 <~ l <~ 225.°5 | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1088/0004-637X/772/1/45 | |
| 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 | 1304.7358 | |
| bordeaux.journal | The Astrophysical Journal | |
| bordeaux.page | id. 45 | |
| bordeaux.volume | 772 | |
| bordeaux.issue | 1 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00868022 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00868022v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Astrophysical%20Journal&rft.date=2013&rft.volume=772&rft.issue=1&rft.spage=id.%2045&rft.epage=id.%2045&rft.eissn=0004-637X&rft.issn=0004-637X&rft.au=ELIA,%20D.&MOLINARI,%20S.&FUKUI,%20Y.&SCHISANO,%20E.&OLMI,%20L.&rft.genre=article |
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