Please note that eDoc will be permanently shut down in the first quarter of 2021!      Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Home
Search
Quick Search
Advanced
Fulltext
Browse
Collections
Persons
My eDoc
Session History
Login
Name:
Password:
Documentation
Help
Support Wiki
Direct access to
document ID:


          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 742408.0, MPI für Astronomie / Publikationen_mpia
The earliest phases of high-mass star formation, as seen in NGC 6334 by Herschel-HOBYS
Authors:Tigé, J.; Motte, F.; Russeil, D.; Zavagno, A.; Hennemann, M.; Schneider, N.; Hill, T.; Nguyen Luong, Q.; Di Francesco, J.; Bontemps, S.; Louvet, F.; Didelon, P.; Könyves, V.; André, P.; Leuleu, G.; Bardagi, J.; Anderson, L. D.; Arzoumanian, D.; Benedettini, M.; Bernard, J. -. P.; Elia, D.; Figueira, M.; Kirk, J.; Martin, P. G.; Minier, V.; Molinari, S.; Nony, T.; Persi, P.; Pezzuto, S.; Polychroni, D.; Rayner, T.; Rivera-Ingraham, A.; Roussel, H.; Rygl, K.; Spinoglio, L.; White, G. J.
Date of Publication (YYYY-MM-DD):2017
Title of Journal:Astronomy and Astrophysics
Volume:602
Start Page:id. A77 (83 pp)
Audience:Not Specified
Abstract / Description:<BR /> Aims: To constrain models of high-mass star formation, the Herschel-HOBYS key program aims at discovering massive dense cores (MDCs) able to host the high-mass analogs of low-mass prestellar cores, which have been searched for over the past decade. We here focus on NGC 6334, one of the best-studied HOBYS molecular cloud complexes. <BR /> Methods: We used Herschel/PACS and SPIRE 70-500 μm images of the NGC 6334 complex complemented with (sub)millimeter and mid-infrared data. We built a complete procedure to extract 0.1 pc dense cores with the getsources software, which simultaneously measures their far-infrared to millimeter fluxes. We carefully estimated the temperatures and masses of these dense cores from their spectral energy distributions (SEDs). We also identified the densest pc-scale cloud structures of NGC 6334, one 2 pc × 1 pc ridge and two 0.8 pc × 0.8 pc hubs, with volume-averaged densities of 105 cm-3. <BR /> Results: A cross-correlation with high-mass star formation signposts suggests a mass threshold of 75 M for MDCs in NGC 6334. MDCs have temperatures of 9.5-40 K, masses of 75-1000 M, and densities of 1 × 105-7 × 107 cm-3. Their mid-infrared emission is used to separate 6
Free Keywords:dust; extinction; ISM: clouds; stars: formation; submillimeter: ISM; stars: protostars; ISM: individual objects: NGC 6334
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6361
URL:http://adsabs.harvard.edu/abs/2017A%26A...602A..77...
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.