English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse
  1. Item Summary / 
  2. View item

Item

ITEM ACTIONSEXPORT
Add to Basket
 Local TagsRelease HistoryDetailsSummary
  Evolution of young protoclusters embedded in dense massive clumps. A new grid of population synthesis SED models and a new set of L/M evolutionary tracks

Molinari, S., Baldeschi, A., Robitaille, T. P., Morales, E. F. E., Schisano, E., Traficante, A., et al. (2019). Evolution of young protoclusters embedded in dense massive clumps. A new grid of population synthesis SED models and a new set of L/M evolutionary tracks. Monthly Notices of the Royal Astronomical Society, 486, 4508-4525.

Item is

 

show all hide all

Basic

show hide
Item Permalink: https://hdl.handle.net/21.11116/0000-0005-D2E1-F Version Permalink: https://hdl.handle.net/21.11116/0000-0005-D2E2-E
Genre: Journal Article

Files

show Files

Locators

show
hide
Locator:
https://ui.adsabs.harvard.edu/abs/2019MNRAS.486.4508M (Any fulltext)
Description:
-
OA-Status:

Creators

show
hide
 Creators:
Molinari, Sergio1, Author
Baldeschi, Adriano1, Author
Robitaille, Thomas P.1, Author
Morales, Esteban F. E.1, Author
Schisano, Eugenio1, Author
Traficante, Alessio1, Author
Merello, Manuel1, Author
Molinaro, Marco1, Author
Vitello, Fabio1, Author
Sciacca, Eva1, Author
Liu, Scige J.1, Author
Affiliations:
1Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners, ou_2421692              

Content

show
hide
Free keywords: stars: formation stars: protostars ISM: general infrared: ISM Astrophysics - Solar and Stellar Astrophysics Astrophysics - Astrophysics of Galaxies
 Abstract: A grid of 20 millions 3-1100 Œºm spectral energy distribution (SED) models is presented for synthetic young clusters embedded in dense clumps. The models depend on four primary parameters: the clump mass Mclump and dust temperature Tdust, the fraction of mass fcore locked in dense cores, and the age of the clump tSF. We populate the young stellar object (YSO) clusters using the Kroupa initial mass function and the YSOs SED models grid of Robitaille et al. We conduct extensive testing of SED fitting using a simulated data set and we find that Mclump essentially depends on the submillimetre portion of the SED, while Tdust is mostly determined from the shape of the SED in the 70-350 Œºm range. Thanks to the large number of models computed, we verify that the combined analysis of L/M, [8-24] and [24-70] colours removes much of the SEDs fcore-tSF degeneracy. The L/M values are particularly useful to diagnose fcore. L/M ‚⧠1 identifies protoclusters with fcore ‚⧠0.1 and tSF \lower.6ex{~ }\raise.65ex\lt 10^5 yr, while L/M \lower.6ex{~ }\raise.65ex\gt 10 excludes fcore ‚⧠0.1. We characterize lower limits of L/M where zero-age main sequence (ZAMS) stars are not found in models, and we also find models with L/M ‚â•10 and no ZAMS stars, in which [8-24] \lower.6ex{~ }\raise.65ex\gt 0.8¬± 0.1 independently from Mclump, temperature, and luminosity. This is the first set of synthesis SED models suited to model for embedded and unresolved clusters of YSOs. A set of new evolutionary tracks in the L/M diagram is also presented.

Details

show
hide
Language(s):
 Dates: 2019
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: -
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Monthly Notices of the Royal Astronomical Society
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 486 Sequence Number: - Start / End Page: 4508 - 4525 Identifier: -