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VISION - Vienna survey in Orion III. Young stellar objects in Orion A
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dc.contributor.author | Grossschedl, Josefa Elisabeth | |
dc.contributor.author | Alves, Joao | |
dc.contributor.author | Teixeira, Paula S. | |
dc.contributor.author | Bouy, Herve | |
dc.contributor.author | Forbrich, Jan | |
dc.contributor.author | Lada, Charles J. | |
dc.contributor.author | Meingast, Stefan | |
dc.contributor.author | Hacar, Alvaro | |
dc.contributor.author | Ascenso, Joana | |
dc.contributor.author | Ackerl, Christine | |
dc.contributor.author | Hasenberger, Birgit | |
dc.contributor.author | Koehler, Rainer | |
dc.contributor.author | Kubiak, Karolina | |
dc.contributor.author | Larreina, Irati | |
dc.contributor.author | Linhardt, Lorenz | |
dc.contributor.author | Lombardi, Marco | |
dc.contributor.author | Moeller, Torsten | |
dc.date.accessioned | 2019-02-21T10:30:07Z | |
dc.date.available | 2019-02-21T10:30:07Z | |
dc.date.issued | 2019-02-12 | |
dc.identifier | 257821871 | |
dc.identifier | 663e4394-42b0-4762-a27a-dac61a5fc28e | |
dc.identifier | 000458360100001 | |
dc.identifier | 85061694966 | |
dc.identifier | 000458360100001 | |
dc.identifier.citation | Grossschedl , J E , Alves , J , Teixeira , P S , Bouy , H , Forbrich , J , Lada , C J , Meingast , S , Hacar , A , Ascenso , J , Ackerl , C , Hasenberger , B , Koehler , R , Kubiak , K , Larreina , I , Linhardt , L , Lombardi , M & Moeller , T 2019 , ' VISION - Vienna survey in Orion III. Young stellar objects in Orion A ' , Astronomy & Astrophysics , vol. 622 , A149 . https://doi.org/10.1051/0004-6361/201832577 | en |
dc.identifier.issn | 1432-0746 | |
dc.identifier.other | ORCID: /0000-0002-3665-5784/work/54516670 | |
dc.identifier.other | BibCode: 2019A&A...622A.149G | |
dc.identifier.uri | https://hdl.handle.net/10023/17116 | |
dc.description.abstract | We have extended and refined the existing young stellar object (YSO) catalogs for the Orion A molecular cloud, the closest massive star-forming region to Earth. This updated catalog is driven by the large spatial coverage (18.3 deg2, ∼950 pc2), seeing limited resolution (∼0.7″), and sensitivity (Ks < 19 mag) of the ESO-VISTA near-infrared survey of the Orion A cloud (VISION). Combined with archival mid- to far-infrared data, the VISTA data allow for a refined and more robust source selection. We estimate that among previously known protostars and pre-main-sequence stars with disks, source contamination levels (false positives) are at least ∼6.4% and ∼2.3%, respectively, mostly due to background galaxies and nebulosities. We identify 274 new YSO candidates using VISTA/Spitzer based selections within previously analyzed regions, and VISTA/WISE based selections to add sources in the surroundings, beyond previously analyzed regions. The WISE selection method recovers about 59% of the known YSOs in Orion A’s low-mass star-forming part L1641, which shows what can be achieved by the all-sky WISE survey in combination with deep near-infrared data in regions without the influence of massive stars. The new catalog contains 2980 YSOs, which were classified based on the de-reddened mid-infrared spectral index into 188 protostars, 185 flat-spectrum sources, and 2607 pre-main-sequence stars with circumstellar disks. We find a statistically significant difference in the spatial distribution of the three evolutionary classes with respect to regions of high dust column-density, confirming that flat-spectrum sources are at a younger evolutionary phase compared to Class IIs, and are not a sub-sample seen at particular viewing angles. | |
dc.format.extent | 38 | |
dc.format.extent | 11805910 | |
dc.language.iso | eng | |
dc.relation.ispartof | Astronomy & Astrophysics | en |
dc.subject | Methods: observational | en |
dc.subject | Stars: formation | en |
dc.subject | Stars: pre-main sequence | en |
dc.subject | ISM: clouds | en |
dc.subject | Infrared: stars | en |
dc.subject | Methods: statistical | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | DAS | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | VISION - Vienna survey in Orion III. Young stellar objects in Orion A | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | 10.1051/0004-6361/201832577 | |
dc.description.status | Peer reviewed | en |
dc.identifier.url | https://arxiv.org/abs/1810.00878v1 | en |
dc.identifier.url | https://arxiv.org/abs/1810.00878 | en |
dc.identifier.url | http://adsabs.harvard.edu/abs/2019A%26A...622A.149G | en |
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