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Quick report on the Arcetri JEDI activity
C. Codella (INAF, Arcetri)
Dust & Complex Organic Molecules
Or COMs are daughter species, i.e. they are formed
in gas-phase following the release of parent species?
Are COMs formed on ices and then released into the gas phase?
CO freeze out on grains at T < 19 K, while H2O condansation occurrs at T at 150 K.
(1)
(2) D-molecules and COMs Emissions are connected (Fontani+14; Codella+15)
(1) HDCO is a tracer of cavity walls (Fontani+, in prep.)
HDCO (red and blue)
220 AU
(2) L1157-‐B1
(3)
(3) D-molecules are related to grain age processing?? (Palumbo+, in prep)
D-bearing molecules in outflows: chemical ‘’filters’’ of material created on grains
COMs: observations towards low-mass YSOs Acetaldehyde (CH3CHO)
Fontani et al. (2014) Codella et al. (2015)
CH3CHO spatial distribution follows the young (2000 yr) cavity produced by the impact of the jet with the ambient medium
COMs associated with the region enriched by iced species evaporated from dust mantles and released into the gas phase
JET
COMs vs. Deuteration: next steps
First step of the PhD project of E. Bianchi
From L1157-B1 to Cep E…..
..then HH212
Glycolaldehyde: the IRAS4-A2 protostar
Santangelo et al. (in preparation)
Next step: the whole CALYPSO sample. Master thesis (University of Florence): M. De Simone
Spectra consistent with a T = 100-200 K
CH2OHCHO is the simplest of the monosaccharide sugars
Protostellar jets/disks: Kinematics and chemistry
Codella et al. (2014), Podio et al. (2015)
• Jet rota=on : the puzzling case of RY TAU
Keplerian disk rota=on clearly detected with PdBI No clear jet rota=on in [FeII] 1.6mu with GEMINI/NIFS (AO FWHM: 0.”12 across the jet). Rota%on upper limits consistent with Disk wind Coffey+ 2015, ApJ in press
Disk in 12CO(2-‐1) Jet: Vrad map in [FeII]
• Jet numerical simula=ons : DG Tau and RW Aur jets with PLUTO code: frames of different jets compared to HST/STIS spectra provide constraints on magne=c field shape at launch point Rubini+ 2014, A&A 567, 13
• Jet diagnos=cs : the jet from BD ISO-‐ChaI 217
M*= 80 MJup ; bipolar jet. Analysis with X-‐SHOOTER spectra Macc =2.5x10-‐11 Msol/yr Mw (Blue +Red) = 8 x 10-‐12 Msol/yr • Mw/Macc consistent with disk winds Whelan+ 2014, A&A 570, 59
Observed Simulated
• Jet feedback on disk proper=es : 1. the DEXTEROUS project : excita=on of disk instabili=es by asymmetric jets ( in progress ) 2. ALMA project for observa=ons of B shape in disks with rota=ng jets (see Baccioo's talk)
Guidi et al. (in preparation)
Radial properties of dust Effects of the CO snowline on grain growth
Homework
To create JEDI products: proposals, white book, proceedings, papers………
Homework
To create JEDI products: proposals, white book, proceedings, papers………
1. Main goal: Synergy between different expertises at different spectral windows;
2. Multiple components: different excitations and at different velocities: what happens to
H2? abundance measurements;
3. Jets’ properties from Class 0 to Class II: collimation, monopolarity?
4. Disks: near-IR to sub-mm to sample different emitting regions;
VLTI/ALMA?
5. Misaligned J-B in the disk/jet system?
0.000
0.005
0.010
0.015
0.020
0.025
Tm
b (
K)
(a) CN 5-4 9/2-7/2 566.7 GHz - 37" - 82 K
0.000
0.005
0.010
0.015
0.020
0.025
Tm
b (
K)
(b) CN 5-4 11/2-9/2 566.9 GHz - 37" - 82 K
0.0
0.2
0.4
0.6
0.8
Tm
b (
K)
(c) o-H2O 3
12 - 2
211153.1 GHz - 18" - 249 K
o-H2O 1
10 - 1
01 x 1.33 556.9 GHz - 38" - 61 K
p-H2O 1
11 - 0
00 x 1.06 1113.3 GHz - 19" - 53 K
0
2
4
6
8
10
12
Tm
b (
K)
(d) CO 10-9 1152.0 GHz - 18" - 304 K
13CO 10-9 x 10.59 1101.3 GHz - 19" - 291 K
-10 0 10 20 30 40V
LSR (km/s)
0.000
0.005
0.010
0.015
Tm
b (
K)
(e) SO 1213
- 1112
558.1 GHz - 38" - 194 K
[C II] x 0.02 1900.5 GHz - 11" - 91 K
Monteporzio kick-‐off meeBng…
Homework
Homework
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