dc.contributor.author | Hasenberger, Birgit | |
dc.contributor.author | Lombardi, Marco | |
dc.contributor.author | Alves, João | |
dc.contributor.author | Forbrich, Jan | |
dc.contributor.author | Hacar, Alvaro | |
dc.contributor.author | Lada, Charles J. | |
dc.date.accessioned | 2018-09-20T09:12:21Z | |
dc.date.available | 2018-09-20T09:12:21Z | |
dc.date.issued | 2018-12-01 | |
dc.identifier.citation | Hasenberger , B , Lombardi , M , Alves , J , Forbrich , J , Hacar , A & Lada , C J 2018 , ' The HP2 Survey - IV. The Pipe nebula : Effective dust temperatures in dense cores ' , Astronomy & Astrophysics , vol. 620 , A24 . https://doi.org/10.1051/0004-6361/201732513 | |
dc.identifier.issn | 0004-6361 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1807.04286v1 | |
dc.identifier.other | ORCID: /0000-0001-8694-4966/work/62751212 | |
dc.identifier.uri | http://hdl.handle.net/2299/20628 | |
dc.description | 14 pages, 22 figures. Accepted for publication in Astronomy & Astrophysics Reproduced with permission from Astronomy & Astrophysics. © 2018 ESO | |
dc.description.abstract | Multi-wavelength observations in the sub-millimeter regime provide information on the distribution of both the dust column density and the effective dust temperature in molecular clouds. In this study, we created high-resolution and high-dynamic-range maps of the Pipe nebula region and explored the value of dust-temperature measurements in particular towards the dense cores embedded in the cloud. The maps are based on data from the Herschel and Planck satellites, and calibrated with a near-infrared extinction map based on 2MASS observations. We have considered a sample of previously defined cores and found that the majority of core regions contain at least one local temperature minimum. Moreover, we observed an anti-correlation between column density and temperature. The slope of this anti-correlation is dependent on the region boundaries and can be used as a metric to distinguish dense from diffuse areas in the cloud if systematic effects are addressed appropriately. Employing dust-temperature data thus allows us to draw conclusions on the thermodynamically dominant processes in this sample of cores: External heating by the interstellar radiation field and shielding by the surrounding medium. In addition, we have taken a first step towards a physically motivated core definition by recognising that the column-densityerature anti-correlation is sensitive to the core boundaries. Dust-temperature maps therefore clearly contain valuable information about the physical state of the observed medium. | en |
dc.format.extent | 14298864 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy & Astrophysics | |
dc.subject | Dust, extinction | |
dc.subject | Infrared: ISM | |
dc.subject | ISM: Individual objects: Pipe nebula | |
dc.subject | ISM: Structure | |
dc.subject | Methods: Data analysis | |
dc.subject | Sub-millimeter: ISM | |
dc.subject | Astronomy and Astrophysics | |
dc.subject | Space and Planetary Science | |
dc.title | The HP2 Survey - IV. The Pipe nebula : Effective dust temperatures in dense cores | en |
dc.contributor.institution | Centre for Astrophysics Research | |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.description.status | Peer reviewed | |
dc.identifier.url | http://www.scopus.com/inward/record.url?scp=85057423839&partnerID=8YFLogxK | |
rioxxterms.versionofrecord | 10.1051/0004-6361/201732513 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |