2021A&A...648A..62F


Query : 2021A&A...648A..62F

2021A&A...648A..62F - Astronomy and Astrophysics, volume 648A, 62-62 (2021/4-1)

Unveiling the traits of massive young stellar objects through a multi-scale survey.

FROST A.J., OUDMAIJER R.D., DE WIT W.J. and LUMSDEN S.L.

Abstract (from CDS):


Context. The rarity and deeply embedded nature of young massive stars has limited the understanding of the formation of stars with masses larger than 8 M. Previous work has shown that complementing spectral energy distributions with interferometric and imaging data can probe the circumstellar environments of massive young stellar objects (MYSOs) well. However, complex studies of single objects often use different approaches in their analysis. Therefore the results of these studies cannot be directly compared.
Aims. This work aims to obtain the physical characteristics of a sample of MYSOs at ∼0.01'' scales, at ∼0.1'' scales, and as a whole, which enables us to compare the characteristics of the sources.
Methods. We apply the same multi-scale method and analysis to a sample of MYSOs. High-resolution interferometric data (MIDI/VLTI), near-diffraction-limited imaging data (VISIR/VLT, COMICS/Subaru), and a multi-wavelength spectral energy distribution are combined. By fitting simulated observables derived from 2.5D radiative transfer models of disk-outflow-envelope systems to our observations, the properties of the MYSOs are constrained.
Results. We find that the observables of all the MYSOs can be reproduced by models with disk-outflow-envelope geometries, analogous to the Class I geometry associated with low-mass protostars. The characteristics of the envelopes and the cavities within them are very similar across our sample. On the other hand, the disks seem to differ between the objects, in particular with regards to what we interpret as evidence of complex structures and inner holes.
Conclusions. The MYSOs of this sample have similar large-scale geometries, but variance is observed among their disk properties. This is comparable to the morphologies observed for low-mass young stellar objects. A strong correlation is found between the luminosity of the central MYSO and the size of the transition disk-like inner hole for the MYSOs, implying that photoevaporation or the presence of binary companions may be the cause.

Abstract Copyright: © ESO 2021

Journal keyword(s): stars: formation - stars: early-type - stars: imaging - techniques: interferometric - infrared: stars

Simbad objects: 22

goto Full paper

goto View the references in ADS

Number of rows : 22
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 V* GG Tau Or* 04 32 30.3506925552 +17 31 40.494063144 14.84 14.78 13.40 11.54   M0e+M2.0e 731 1
2 * alf Tau LP? 04 35 55.23907 +16 30 33.4885 4.32 2.40 0.86 -0.37 -1.31 K5+III 1251 2
3 NAME Mon R2 IRS 2 * 06 07 45.83 -06 22 53.5           B0 111 0
4 NAME Mon R2 HII 06 07 47.58 -06 22 42.6           ~ 736 2
5 NAME Mon R2 IRS 3S IR 06 07 47.836 -06 22 56.29           ~ 12 0
6 NAME Mon R2 IRS 3N IR 06 07 47.855 -06 22 55.49           ~ 11 0
7 NGC 2170 RNe 06 07 48 -06 23.1           ~ 42 0
8 MMB G192.600-00.048 Y*O 06 12 54.0100 +17 59 23.200           ~ 395 0
9 NAME SH 2-255 IRS 3 Y*O 06 12 55.03 +17 59 29.9           ~ 22 0
10 IC 2162 HII 06 13 04.1 +17 58 44           ~ 358 2
11 RAFGL 989 Y*O 06 41 10.1587451112 +09 29 33.635220144   17.4 16.8 18.26 17.28 B2 263 0
12 HD 97048 Ae* 11 08 03.3109731720 -77 39 17.490777444 9.03 8.76 9.00   8.64 A0Vep 541 0
13 OH 305.20+00.21 Mas 13 11 10.4904 -62 34 38.856           ~ 45 0
14 * tet Cen PM* 14 06 40.94752 -36 22 11.8371 3.94 3.04 2.05 1.29 0.76 K0-IIIb 252 1
15 IRAS 17216-3801 Y*? 17 25 06.51720 -38 04 00.4368           ~ 35 0
16 HD 163296 Ae* 17 56 21.2881851168 -21 57 21.871819008 7.00 6.93 6.85 6.86 6.67 A1Vep 1091 0
17 RAFGL 2059 Y*O 18 04 53.1586569336 -24 26 41.642012796 19.905 21.910 18.914   14.078 ~ 144 0
18 [VM2005] W33A Q1 mm 18 14 39.46 -17 52 00.5           ~ 20 0
19 W 33a Y*O 18 14 39.56547 -17 52 02.2260           ~ 693 0
20 RAFGL 2136 Y*O 18 22 26.52888 -13 30 14.0400           ~ 283 0
21 MSX5C G023.0126-00.4177 MIR 18 34 42.2 -09 00 41           ~ 57 0
22 RAFGL 2591 Y*O 20 29 24.8230 +40 11 19.590           ~ 619 0

To bookmark this query, right click on this link: simbad:objects in 2021A&A...648A..62F and select 'bookmark this link' or equivalent in the popup menu