2025ApJ...984L..15P

Query : 2025ApJ...984L..15P

2025ApJ...984L..15P - Astrophys. J., 984, L15 (2025/May-1)

exoALMA. X. Channel Maps Reveal Complex 12CO Abundance Distributions and a Variety of Kinematic Structures with Evidence for Embedded Planets.

PINTE C., ILEE J.D., HUANG J., BENISTY M., FACCHINI S., FUKAGAWA M., TEAGUE R., BAE J., BARRAZA-ALFARO M., CATALDI G., CUELLO N., CURONE P., CZEKALA I., FASANO D., FLOCK M., GALLOWAY-SPRIETSMA M., GARG H., HALL C., HAMMOND I., HARDIMAN C., HILDER T., IZQUIERDO A.F., KANAGAWA K., LESUR G., LODATO G., LONGARINI C., LOOMIS R.A., MASSET F., MENARD F., ORIHARA R., PRICE D.J., ROSOTTI G., STADLER J., YEN H.-W., WAFFLARD-FERNANDEZ G., WILNER D.J., WINTER A.J., WOLFER L., YOSHIDA T.C. and ZAWADZKI B.

Abstract (from CDS):

We analyze the 12CO J = 3-2 data cubes of the disks in the exoALMA program. 13/15 disks reveal a variety of kinematic substructures in individual channels: large-scale arcs or spiral arms, localized velocity kinks, and/or multiple faints arcs that appear like filamentary structures on the disk surface. We find kinematic signatures that are consistent with planet wakes in six disks: AA Tau, SY Cha, J1842, J1615, LkCa 15, and HD 143006. Comparison with hydrodynamical and radiative transfer simulations suggests planets with orbital radii between 80 and 310 au and masses between 1 and 5 MJup. Additional kinematic substructures limit our ability to place tight constraints on the planet masses. When the inclination is favorable to separate the upper and lower surfaces (near 45°, i.e., in 7/15 disks), we always detect the vertical CO snowline and find that the 12CO freeze-out is partial in the disk midplane, with a depletion factor of ≈10–3 -10–2 compared to the warm molecular layer. In these same seven disks, we also systematically detect evidence of CO desorption in the outer regions.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Protoplanetary disks - Exoplanet formation - Radiative transfer - Hydrodynamics - Planetary-disk interactions - Exoplanets - Submillimeter astronomy

Simbad objects: 22

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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 - 2026 		#notes
1 V* DM Tau Or* 04 33 48.7336763736 +18 10 09.973460280 14.30 14.82 14.00     M2Ve 731 0
2 V* AA Tau Or* 04 34 55.4201902392 +24 28 53.033624580 13.14 13.34 12.20 12.03   K5Ve 801 0
3 EM* LkCa 15 Or* 04 39 17.7911622816 +22 21 03.390090984   13.01 12.03 11.61   K5:Ve 792 1
4 V* V1366 Ori Ae* 05 16 00.4765181328 -09 48 35.393784012 10.19 10.16 9.84 9.77 9.63 B9.5V 253 0
5 HD 36112 Ae* 05 30 27.5285630040 +25 19 57.076288752   8.57 8.27     A8Ve 551 0
6 V* CQ Tau Ae* 05 35 58.4666264136 +24 44 54.091450572 11.290 10.780 10.000   8.33 F5IVe 360 0
7 V* SY Cha Or* 10 56 30.3883129248 -77 11 39.401977596         11.29 K5Ve 194 0
8 HD 97048b Pl 11 08 03.3109731720 -77 39 17.490777444           ~ 5 0
9 HD 97048 Ae* 11 08 03.3109731720 -77 39 17.490777444 9.03 8.76 9.00   8.64 A0Vep 590 0
10 HD 100546 Be* 11 33 25.4408872296 -70 11 41.241297948   6.71 6.30   6.64 A0VaekB8_lB 894 1
11 CPD-68 1894 TT* 13 22 07.5421944624 -69 38 12.219391716   11.38 10.393   9.117 K1Ve 203 0
12 HD 135344B Or* 15 15 48.4460065200 -37 09 16.024369824   9.21 8.708     F8V 548 0
13 THA 15-12 Or* 15 56 09.2066646912 -37 56 06.126118692   13.12 11.93 11.45   M0e 554 0
14 HD 142527 Ae* 15 56 41.8882637904 -42 19 23.248281828   9.04 8.34     F6III 741 1
15 HD 143006 Or* 15 58 36.9126279888 -22 57 15.220559196   10.92 10.14   8.70 G5IVe 338 0
16 ATO J241.0901-21.5080 Or* 16 04 21.6547947840 -21 30 28.550063304   13.3       K2 190 0
17 WRAY 15-1443 TT* 16 15 20.2341630672 -32 55 05.097631872 13.88 13.22 12.00 11.658 10.50 K5 120 0
18 HD 163296b Pl? 17 56 21.2881851168 -21 57 21.871819008           ~ 4 0
19 HD 163296 Ae* 17 56 21.2881851168 -21 57 21.871819008 7.00 6.93 6.85 6.86 6.67 A3VaekA1mA1 1301 0
20 HD 319139 SB* 18 14 10.4818675368 -32 47 34.516836060   11.47 10.68   9.11 K5+K7 423 0
21 WRAY 15-1880 TT* 18 42 57.9813628512 -35 32 42.826760736   12.91 11.77     K2 84 0
22 IRAS 18489-3703 TT* 18 52 17.3013456504 -37 00 11.948920920   12.7 12.194   10.842 K7V 84 0

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