2023A&A...679A..82M

Query : 2023A&A...679A..82M

2023A&A...679A..82M - Astronomy and Astrophysics, volume 679A82 (2023/11-1)

Testing external photoevaporation in the σ-Orionis cluster with spectroscopy and disk mass measurements.

MAUCO K., MANARA C.F., ANSDELL M., BETTONI G., CLAES R., ALCALA J., MIOTELLO A., FACCHINI S., HAWORTH T.J., LODATO G. and WILLIAMS J.P.

Abstract (from CDS):

Context. The evolution of protoplanetary disks is regulated by an interplay of several processes, either internal to the system or related to the environment. As most of the stars and planets, including our own Solar System, have formed in massive stellar clusters that contain OB-type stars, studying the effects of UV radiation on disk evolution is of paramount importance.
Aims. For this work, we tested the impact of external photoevaporation on the evolution of disks in the mid-age (∼3-5 Myr) σ-Orionis cluster by conducting the first combined large-scale UV to IR spectroscopic and millimeter-continuum survey of this region.
Methods. We studied a sample of 50 targets located at increasing distances from the central, massive OB system σ-Ori. We combined new spectra obtained with VLT/X-shooter, used to measure mass accretion rates and stellar masses, with new and previously published ALMA measurements of disk dust and gas fluxes and masses.
Results. We confirm the previously found decrease in Mdust in the inner ∼0.5 pc of the cluster. This is particularly evident when considering the disks around the more massive stars (≥0.4 M⊙), where those located in the inner part (<0.5 pc) of the cluster have Mdust about an order of magnitude lower than the more distant ones. About half of the sample is located in the region of the Ṁacc versus Mdisk expected by models of external photoevaporation, namely showing shorter disk lifetimes than expected for their ages. The shorter disk lifetimes is observed for all targets with a projected separation from σ-Ori < 0.5 pc, proving that the presence of a massive stellar system affects disk evolution.
Conclusions. External photoevaporation is a viable mechanism to explain the observed shorter disk lifetimes and lower Mdust in the inner ∼0.5 pc of the σ-Orionis cluster, where the effects of this process are more pronounced. Follow-up observations of the low stellar mass targets are crucial to constrain disk dispersion timescales in the cluster and to confirm the dependence of the external photoevaporation process with stellar host mass. This work confirms that the effects of external photoevaporation are significant down to at least impinging radiation as low as ∼104G0.

Abstract Copyright: © The Authors 2023

Journal keyword(s): protoplanetary disks - accretion, accretion disks - stars: pre-main sequence - stars: variables: T Tauri, Herbig Ae/Be

Errata: erratum vol. 680, art. C1 (2023)

Simbad objects: 109

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Number of rows : 109
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 QSO B0420-0127 Bla 04 23 15.80072217 -01 20 33.0656073   17.50 17.00 16.28   ~ 1263 3
2 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
3 QSO B0507+179 Bla 05 10 02.36912937 +18 00 41.5815635   20.0 19.0 19.09   ~ 470 1
4 ESO 362-21 BLL 05 22 57.98464178 -36 27 30.8512953   15.26 14.62 14.48   ~ 873 2
5 ICRF J053207.5-030707 Bla 05 32 07.51932634 -03 07 07.0365011           ~ 31 1
6 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
7 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1479 1
8 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
9 Haro 5-5 TT* 05 37 30.9498976632 -02 23 42.802491696   18.33 17.11 15.91 14.51 M2.0 32 0
10 2MASS J05375486-0241092 Y*O 05 37 54.8664722592 -02 41 09.237564456   19.68 18.34 17.14 15.43 M5.0 25 0
11 [BZR99] S Ori 35 Y*O 05 37 55.5938374392 -02 33 05.343313356 20.472 23.63   19.40 17.55 M4.5 18 0
12 [BZR99] S Ori 12 Or* 05 37 57.4587695400 -02 38 44.468902788   20.61 19.81 18.15 16.42 M4.5/6V 33 0
13 NAME 30 Dor Region reg 05 38.0 -69 06           ~ 261 0
14 NAME Ori I As* 05 38 -02.8           ~ 653 0
15 2MASS J05380097-0226079 TT* 05 38 00.9734850576 -02 26 07.932579252   18.08 16.71 15.57 14.27 M2.5 31 0
16 Haro 5-7 TT* 05 38 01.0746724561 -02 45 38.026086860   18.61 17.38 15.97 14.24 M4.5 30 0
17 2MASS J05380552-0235571 Y*O 05 38 05.5214643432 -02 35 57.126120288   26.46 21.41 19.60 17.70 M4.5 19 0
18 Kiso A-0904 67 TT* 05 38 06.7453899264 -02 30 22.745385900 17.703 16.46 15.08 14.08 13.14 M1 40 0
19 Kiso A-0976 316 TT* 05 38 08.2658566896 -02 35 56.276354400 18.050   16.19 15.08 13.76 M2.5 40 0
20 Haro 5-8 TT* 05 38 13.1534150256 -02 45 51.063950448   16.87 15.73 14.65 13.47 M1.5 39 0
21 2MASS J05381319-0226088 TT* 05 38 13.1972684896 -02 26 08.655719751   18.41 16.92 15.67 14.10 M4.5 29 0
22 HD 294268 Y*O 05 38 14.1178464312 -02 15 59.762656296   10.93 10.45   10.010 F6e 48 0
23 2MASS J05381778-0240500 Y*O 05 38 17.7845776560 -02 40 50.095084908 18.94 19.81 18.14 16.76 14.94 M5.0 21 0
24 Kiso A-0976 326 TT* 05 38 18.8587986024 -02 51 38.946956472   18.20 16.81 15.65 14.25 M2.5 36 0
25 [W96] rJ053820-0234 TT* 05 38 20.5029803016 -02 34 08.974652808   20.99 19.39 17.68 15.74 M4e 37 0
26 2MASS J05382119-0254110 TT* 05 38 21.1939218576 -02 54 11.142855864   19.60 18.21 16.68 14.82 M5.5 29 0
27 2MASS J05382307-0236493 Y*O 05 38 23.0801723136 -02 36 49.399439220 18.99 19.61 18.45 17.01 15.64 M4.5 21 0
28 V* V2725 Ori Or* 05 38 23.3366740776 -02 25 34.605441120   19.60 18.40 17.22 15.69 M2.0 27 0
29 V* V2726 Ori Or* 05 38 23.5917044904 -02 20 47.597296344   19.81 18.64 17.14 15.32 M5.5 26 0
30 V* V2728 Ori Or* 05 38 25.4373236808 -02 42 41.266014912   20.88 20.33 19.08 17.20 M7 38 0
31 [BNM2013] 93.03 227 LM* 05 38 26.8421837544 -02 38 46.108875228   21.26 19.73 18.09 16.09 M3.5 27 0
32 V* V505 Ori TT* 05 38 27.2560402224 -02 45 09.705640104     14.16 13.54 12.85 K7e 65 0
33 Kiso A-0976 329 TT* 05 38 27.5110120944 -02 35 04.225488108 18.90 18.59 17.17 15.92 14.37 M3.5e 42 0
34 Mayrit 803197 Y*O 05 38 28.9705540938 -02 48 47.321425377   25.83 20.83   17.01 M6 21 0
35 Haro 5-9 TT* 05 38 29.1605610504 -02 16 15.770920332   15.40 14.45 13.20 12.954 K6.5 38 0
36 Haro 5-11 TT* 05 38 31.4247760176 -02 36 33.894690768 16.59 17.36 16.42 15.22 13.82 M3.5 26 0
37 [W96] rJ053831-0235 TT* 05 38 31.5873593664 -02 35 15.081924804 19.243 17.17 15.85 14.88 13.77 M0e 31 0
38 V* TX Ori TT* 05 38 33.6879729168 -02 44 14.166027204 13.75 13.16 12.06 11.38 10.73 K4.5 59 0
39 [W96] rJ053833-0236 TT* 05 38 34.0608899664 -02 36 37.589513328 19.530   16.39 15.24 13.72 M3-M4e 41 0
40 2MASS J05383460-0241087 TT* 05 38 34.6040244960 -02 41 08.823514236 18.85 19.71 17.76 16.62 15.00 M2.0 27 0
41 2MASS J05383902-0245321 TT* 05 38 39.0315633456 -02 45 32.214599712     17.26 15.92 14.58 M2.5 41 0
42 2MASS J05383976-0232203 Or* 05 38 39.7659382656 -02 32 20.386224312   21.83 21.75 19.72 17.52 M6.5-M7 18 0
43 Haro 5-13 TT* 05 38 40.2734966736 -02 30 18.558554472 17.937 16.91 15.49 14.48 13.46 M0e 41 0
44 2MASS J05384053-0233275 Y*O 05 38 40.5374992824 -02 33 27.596596968 19.58 18.95 17.65 16.28 14.52 M2.8 30 0
45 [BNM2013] 92.01 24 LM* 05 38 41.5981123056 -02 30 28.925398728 19.33 18.54 17.07 15.87 14.37 M2.1 29 0
46 UCAC2 30800102 TT* 05 38 42.2801182536 -02 37 14.821687344 17.36 16.69 15.27 14.27 13.22 M0.5 37 0
47 2MASS J05384301-0236145 Y*O 05 38 43.0201961184 -02 36 14.636669328 12.79 14.23 14.87 14.28 13.30 M1.0 22 0
48 2MASS J05384386-0237068 TT* 05 38 43.8691779528 -02 37 06.911503896 13.559   17.93 16.59 14.80 M5.5 38 0
49 [W96] 4771-1051 TT* 05 38 44.2345372944 -02 40 19.771649184 15.88 15.24 14.02 13.22 12.41 K7.5/8e 42 0
50 * sig Ori Y*O 05 38 44.7653828520 -02 36 00.283179888 2.54 3.58 3.79 3.87 4.11 O9.5V+B0.2V(n) 855 0
51 Mayrit 89175 LM* 05 38 45.2785320048 -02 37 29.322067548     18.77 17.10 15.35 M5.5 18 0
52 V* V595 Ori TT* 05 38 45.37536 -02 41 59.4240 17.75 17.08 15.61 15.19 13.45 M1.5 29 0
53 [W96] pJ053847-0234 TT* 05 38 47.1886997424 -02 34 36.917448204 17.17 18.43 17.36 16.38 14.81 M4.0 25 0
54 UCAC4 438-011202 TT* 05 38 47.4634997136 -02 35 25.322448264 12.01 14.96 14.82 15.071 13.10 M0.5 26 0
55 [W96] rJ053847-0237 TT* 05 38 47.91648 -02 37 19.2360 16.81 16.78 15.51 15.01 13.39 M1.0 29 0
56 [W96] 4771-899 TT* 05 38 48.0364463496 -02 27 14.149731420 16.327 14.490 13.254 12.630 11.54 K7e 33 0
57 [BZR99] S Ori 15 Or* 05 38 48.0991320696 -02 28 53.682649428 21.11 21.32 19.89 18.32 16.42 M5.5e 26 0
58 2MASS J05384818-0244007 Or* 05 38 48.1903491768 -02 44 00.860001936 21.27 21.43 19.76 18.11 16.13 M6.5 22 0
59 V* V2737 Ori Or* 05 38 49.2830405880 -02 23 57.624853740 22.321 23.90 19.39 17.67 16.90 M3.8V 27 0
60 2MASS J05384970-0234526 Y*O 05 38 49.7044756272 -02 34 52.679689680   19.12 17.96 16.84 14.79 M5 24 0
61 2MASS J05385060-0242429 Or* 05 38 50.6088010368 -02 42 42.960276072   21.04 19.42 17.80 15.85 ~ 24 0
62 V* RU Ori TT* 05 38 52.0091406720 -02 46 43.719992436     14.27 13.44 12.72 K7.5 44 0
63 2MASS J05385831-0216101 TT* 05 38 58.3195615992 -02 16 10.132973472   17.04 15.61 14.62 13.64 M0.0 24 0
64 Mayrit 707162 TT* 05 38 59.109048 -02 47 13.38720   16.08 14.22 15.38 12.561 M2.0 23 0
65 Haro 5-18 TT* 05 38 59.2270703712 -02 33 51.416508384 18.648 17.62 16.55 15.59 14.43 M2.5 37 0
66 [HHM2007] 828 * 05 38 59.4205251576 -02 35 07.507663260           ~ 2 0
67 Haro 5-16 TT* 05 39 01.3710486072 -02 18 27.456635376   16.28 15.01 14.02 12.99 M0.5 41 0
68 2MASS J05390193-0235029 Y*O 05 39 01.9391478912 -02 35 02.905186848 19.818 20.72 19.68 18.46 17.11 M4 27 0
69 UCAC4 437-010930 TT* 05 39 02.9786833104 -02 41 27.164775444 17.71 17.87 16.51 15.33 13.93 M2.5 32 0
70 ESO-HA 1693 TT* 05 39 03.5780102112 -02 46 27.054378984   18.04 16.94 15.82 14.37 M3.5 32 0
71 2MASS J05390387-0220081 Y*O 05 39 03.8714742696 -02 20 08.113664004   20.09 18.79 17.38 15.62 M4.5 17 0
72 UCAC4 437-010938 TT* 05 39 04.5914072832 -02 41 49.316692020 17.20 17.44 16.39 15.51 14.53 M0.0 18 0
73 Haro 5-19 TT* 05 39 07.6049425848 -02 32 39.192952344 16.743 15.24 13.99 13.18 12.41 K6.5 37 0
74 2MASS J05390878-0231115 TT* 05 39 08.7813079488 -02 31 11.585111808 18.78 19.27 18.11 16.82 15.30 M3.0 33 0
75 Haro 5-20 TT* 05 39 11.5179186744 -02 31 06.580001460 18.295 16.98 15.45 14.56 13.56 M0.0 43 0
76 [BZR99] S Ori 30 Y*O 05 39 13.0855893696 -02 37 50.971269108     20.74 19.34 17.30 M6 22 0
77 [BNM2013] 90.02 146 LM* 05 39 15.8295100056 -02 36 50.763469176 20.13 19.25 17.70 16.41 14.85 M4.0 25 0
78 Haro 5-21 TT* 05 39 18.8360108640 -02 30 53.221941684 17.563 15.88 14.41 13.49 12.60 K7.0 41 0
79 V* BG Ori TT* 05 39 25.2030748440 -02 38 22.059069252   15.88 14.72 13.78 12.83 K7.5 49 0
80 2MASS J05392633-0228376 Y*O 05 39 26.3370825408 -02 28 37.711621812   19.69 18.02 16.96 15.26 M5 24 0
81 UCAC4 438-011271 TT* 05 39 29.3528446680 -02 27 21.038927076         14.807 M0.0 35 0
82 Haro 5-25 TT* 05 39 39.3780952152 -02 17 04.499525544   16.95 15.35 14.29 13.24 M0.0 42 0
83 Haro 5-27 TT* 05 39 39.8261592024 -02 31 21.865624536 14.589   14.30 13.92 13.073 K5.5 93 0
84 V* V603 Ori Or* 05 39 39.8292920832 -02 33 16.040160936 19.253   16.70   13.91 K7 39 0
85 V* RW Ori TT* 05 39 39.9869752104 -02 43 09.749888724     13.32   11.956 K1.0 32 0
86 V* RV Ori TT* 05 39 40.1685239784 -02 20 48.032941848     13.90   12.715 K5.0 41 0
87 2MASS J05394318-0232433 Y*O 05 39 43.1842098840 -02 32 43.377953604 19.867 19.34 17.72 16.45 14.83 M4.5 31 0
88 [BZR99] S Ori 10 Or* 05 39 44.5055544576 -02 24 43.244819676   23.03 19.76   16.36 ~ 23 0
89 2MASS J05394944-0223459 Y*O 05 39 49.4438049576 -02 23 45.965751396   20.21 18.15 16.86 15.12 M4e 24 0
90 Haro 5-30 TT* 05 39 51.7265730336 -02 22 47.261235504   19.33 17.95 16.40 14.64 M5.5e 37 0
91 Haro 5-32 TT* 05 39 53.6204045688 -02 33 42.724290960 16.971   16.92 15.84 14.32 M4 43 0
92 2MASS J05395421-0227326 Y*O 05 39 54.2046663960 -02 27 32.726136384   19.81 18.25 16.86 15.21 M4.5 28 0
93 V* V605 Ori TT* 05 39 54.280104 -02 24 39.42216     15.01 14.91 12.808 M1.0 27 0
94 Mayrit 1045094 Y*O 05 39 54.3226700016 -02 37 18.974259444   20.61 20.81 19.05 17.05 M4.5 21 0
95 Haro 5-34 TT* 05 39 54.6558099576 -02 46 34.127644368   15.06 14.40 13.51 12.76 K6.0 40 0
96 Haro 5-36 TT* 05 40 01.9558295304 -02 21 32.633754840     16.63 15.46 13.88 M4.5 44 0
97 Mayrit 1196092 Or* 05 40 04.5326246160 -02 36 42.088724028   20.69   19.94 17.73 M6 27 0
98 2MASS J05400525-0230522 Y*O 05 40 05.2553008224 -02 30 52.391019780 22.379 20.75 19.08 17.65 15.86 M5 21 0
99 V* V608 Ori TT* 05 40 08.8861654944 -02 33 33.783037632     14.63 14.09 13.907 K7.5 51 0
100 2MASS J05400933-0225067 Or* 05 40 09.3353302224 -02 25 06.806688960   19.92 18.47 16.68 15.10 M5.5 24 0
101 Haro 5-38 TT* 05 40 12.8662611576 -02 22 02.167886532   14.94 13.70   11.858 K5.5 26 0
102 NAME Horsehead Nebula DNe 05 40 59.0 -02 27 30           ~ 555 0
103 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1198 1
104 Cl Mamajek 1 OpC 08 42 32.9 -78 57 47           ~ 392 0
105 NAME TW Hya Association As* 11 01.9 -34 42           ~ 1018 0
106 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1266 1
107 NAME Lupus Complex SFR 16 03 -38.1           ~ 851 0
108 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
109 Ass Ori OB 1a As* ~ ~           ~ 237 0

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