NIKA2 observations of dust grain evolution from star-forming filament to T-Tauri disk: Preliminary results from NIKA2 observations of the Taurus B211/B213 filament

Nguyen-Luong, Q., Adam, R., Ade, P. ORCID: https://orcid.org/0000-0002-5127-0401, Ajeddig, H., André, P., Artis, E., Aussel, H., Beelen, A., Benoît, A., Berta, S., Bing, L., Bourrion, O., Calvo, M., Catalano, A., De Petris, M., Désert, F.-X., Doyle, S. ORCID: https://orcid.org/0000-0002-9054-986X, Driessen, E.F.C., Ejlali, G., Gomez, A., Goupy, J., Hanser, C., Katsioli, S., Kéruzoré, F., Kramer, C., Ladjelate, B., Lagache, G., Leclercq, S., Lestrade, J.-F., Macías-Pérez, J. F., Madden, S.C., Maury, A., Mauskopf, P. ORCID: https://orcid.org/0000-0001-6397-5516, Mayet, F., Monfardini, A., Moyer-Anin, A., Muñoz-Echeverría, M., Perotto, L., Pisano, G., Ponthieu, N., Revéret, V., Rigby, A.J., Ritacco, A., Romero, C., Roussel, H., Ruppin, F., Schuster, K., Sievers, A., Tucker, C. ORCID: https://orcid.org/0000-0002-1851-3918, Zylka, R., Bacmann, A., Duong-Tuan, A., Peretto, N. ORCID: https://orcid.org/0000-0002-6893-602X and Rigby, A. 2024. NIKA2 observations of dust grain evolution from star-forming filament to T-Tauri disk: Preliminary results from NIKA2 observations of the Taurus B211/B213 filament. EPJ Web of Conferences 293 , 00035. 10.1051/epjconf/202429300035

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Abstract

To understand the evolution of dust properties in molecular clouds in the course of the star formation process, we constrain the changes in the dust emissivity index from star-forming filaments to prestellar and protostellar cores to T Tauri stars. Using the NIKA2 continuum camera on the IRAM 30 m telescope. we observed the Taurus B211/B2I3 filament at 1.2 mm and 2 mm with unprecedented sensitivity and used the resulting maps to derive the dust emissivity index β. Our sample of 105 objects detected in the β map of the B211/B213 filament indicates that, overal. β decreases from filament and prestellar cores (β ~ 2 ± 0.5) to protostellar cores (β ~ 1.2 ± 0.2) to T-Tauri protoplanetary disk (β < I). The averaged dust emissivity index β across the B211/B2I3 filament exhibits a flat (β ~ 2 ± 0.3) profile. This may imply that dust grain sizes are rather homogeneous in the filament, start to grow significantly in size only after the onset of the gravitational contraction/collapse of prestellar cores to protostars, reaching big sizes in T Tauri protoplanetary disks. This evolution from the parent filament to T-Tauri disks happens on a timescale of about 1-2 Myr.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Physics and Astronomy
Publisher:	Società Italiana di Fisica
ISSN:	2100-014X
Date of First Compliant Deposit:	10 May 2024
Date of Acceptance:	28 March 2024
Last Modified:	04 Jun 2024 11:36
URI:	https://orca.cardiff.ac.uk/id/eprint/168844

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