2017ApJ...851...85B


Query : 2017ApJ...851...85B

2017ApJ...851...85B - Astrophys. J., 851, 85-85 (2017/December-3)

Measurement of circumstellar disk sizes in the Upper Scorpius OB Association with ALMA.

BARENFELD S.A., CARPENTER J.M., SARGENT A.I., ISELLA A. and RICCI L.

Abstract (from CDS):

We present detailed modeling of the spatial distributions of gas and dust in 57 circumstellar disks in the Upper Scorpius OB Association observed with ALMA at submillimeter wavelengths. We fit power-law models to the dust surface density and CO J = 3-2 surface brightness to measure the radial extent of dust and gas in these disks. We found that these disks are extremely compact: the 25 highest signal-to-noise disks have a median dust outer radius of 21 au, assuming an R–1 dust surface density profile. Our lack of CO detections in the majority of our sample is consistent with these small disk sizes assuming the dust and CO share the same spatial distribution. Of seven disks in our sample with well-constrained dust and CO radii, four appear to be more extended in CO, although this may simply be due to the higher optical depth of the CO. Comparison of the Upper Sco results with recent analyses of disks in Taurus, Ophiuchus, and Lupus suggests that the dust disks in Upper Sco may be approximately three times smaller in size than their younger counterparts, although we caution that a more uniform analysis of the data across all regions is needed. We discuss the implications of these results for disk evolution.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): open clusters and associations: individual: Upper Scorpius OB1 - planetary systems - protoplanetary disks - stars: pre-main sequence - stars: pre-main sequence

Simbad objects: 70

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Number of rows : 70
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 IC 348 OpC 03 44 32 +32 09.5           ~ 1321 1
2 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4020 0
3 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2175 1
4 NAME sigma Orionis Cluster MGr 05 38 42 -02 36.0           ~ 527 0
5 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1077 1
6 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 753 0
7 RX J1535.8-2959 ** 15 35 48.559992 -29 58 55.22628   16.267 14.909 14.246   M4 17 0
8 2MASS J15514032-2146103 Y*? 15 51 40.3236141816 -21 46 10.410119868           M4Ve 15 0
9 2MASS J15521088-2125372 LM* 15 52 10.8878018040 -21 25 37.255394352           M3.7 12 0
10 2MASS J15530132-2114135 Y*? 15 53 01.3221988656 -21 14 13.535823156           M4Ve 15 0
11 UCAC2 23646111 * 15 53 42.1002855120 -20 49 28.339057632         13.55 M3.4V 18 0
12 [PBB2002] USco J155624.8-222555 Ro* 15 56 24.7721806584 -22 25 55.313778144           M4e 30 0
13 RX J155829.5-231026 TT* 15 58 29.8128891888 -23 10 07.752769680           M3e 40 0
14 HD 143006 Or* 15 58 36.9126279888 -22 57 15.220559196   10.92 10.14   8.70 G5IVe 214 0
15 [PBB2002] USco J160018.4-223011 * 16 00 18.4309283544 -22 30 11.535396696           M3e 22 0
16 [PBB2002] USco J160140.8-225810 ** 16 01 40.868760 -22 58 10.58520   15.67 15.30 15.37   M3e 20 0
17 2MASS J16014157-2111380 Y*O 16 01 41.5728822312 -21 11 38.157324000           M4 14 0
18 [PBB2002] USco J160207.5-225746 Ro* 16 02 07.5766784976 -22 57 46.882812240           M1e 27 0
19 2MASS J16024152-2138245 Ro* 16 02 41.5203177936 -21 38 24.636813108           M4.75 18 0
20 NAME Lupus Complex SFR 16 03 -38.1           ~ 626 0
21 UScoCTIO 59 Ro* 16 03 01.6136288544 -22 07 52.472918208           M4.75 25 0
22 2MASS J16032225-2413111 Y*? 16 03 22.2543113472 -24 13 11.167593024           M3.5 10 0
23 2MASS J16035767-2031055 TT* 16 03 57.6711677256 -20 31 05.604697272   13.4   11.73 10.92 K5 50 0
24 [PGZ2001] J160357.9-194210 Y*O 16 03 57.9355222272 -19 42 10.905101028           M2e 38 0
25 UCAC4 352-076526 Ro* 16 04 17.4053275800 -19 42 28.816820568   15.809 14.697 15.535   M3.5 18 0
26 ATO J241.0901-21.5080 Y*O 16 04 21.6547947840 -21 30 28.550063304   13.3       K2 111 0
27 [PGZ2001] J160439.1-194245 Y*O 16 04 39.1707415848 -19 42 45.976064004           M4e 20 0
28 [PGZ2001] J160525.5-203539 Y*O 16 05 25.5644653296 -20 35 39.946484364           M5e 26 0
29 [PGZ2001] J160545.4-202308 Y*O 16 05 45.3995129856 -20 23 08.809297440           M2e 31 0
30 ScoPMS 31 TT* 16 06 21.9398106936 -19 28 44.802473268     13.47     M0.5V 43 0
31 [PGZ2001] J160622.8-201124 Y*O 16 06 22.7834979936 -20 11 24.359434620           M5e 30 0
32 2MASS J16063539-2516510 * 16 06 35.3929524000 -25 16 51.199726044           M4.5 14 0
33 2MASS J16064102-2455489 * 16 06 41.0215350024 -24 55 49.047296916           M4.5 14 0
34 [PGZ2001] J160643.8-190805 Y*O 16 06 43.8620267616 -19 08 05.549732448           K6e 42 0
35 2MASS J16072625-2432079 Y*? 16 07 26.2542206184 -24 32 07.913328360           M3.5 18 0
36 2MASS J16072747-2059442 TT* 16 07 27.4601652072 -20 59 44.160712224       16.18 12.94 M4.5V 21 0
37 [PGZ2001] J160739.4-191747 Y*O 16 07 39.3986260272 -19 17 47.249283444           M2e 24 0
38 UCAC4 347-077201 Em* 16 07 57.9598821672 -20 40 08.702254704   15.416 14.007 14.674   ~ 21 0
39 2MASS J16081566-2222199 LM* 16 08 15.6662977704 -22 22 20.054864892           M3.25 19 0
40 [T64] 3 Y*O 16 08 23.2468097568 -19 30 00.977031108         11.79 K9e 47 0
41 [PGZ2001] J160827.5-194904 Y*O 16 08 27.5104444296 -19 49 05.061066924           M5e 29 0
42 [PBB2002] USco J160900.0-190836 Ro* 16 09 00.0227996640 -19 08 36.865209012           M5e 35 0
43 [PGZ2001] J160900.7-190852 TT* 16 09 00.7592409720 -19 08 52.680361920           M1.0V 56 0
44 [PBB2002] USco J160935.6-182822 Y*? 16 09 35.5943312328 -18 28 23.105257428           M3e 16 0
45 1RXS J160941.7-221803 TT* 16 09 40.9929383688 -22 17 59.527565484   13.8 12.561   10.655 M0 30 0
46 [PBB2002] USco J160953.6-175446 Y*? 16 09 53.6173365312 -17 54 47.434100292           M3e 31 0
47 [PGZ2001] J160954.4-190654 Y*O 16 09 54.4143597864 -19 06 55.045336464   15.9       M1e 27 0
48 [PGZ2001] J160959.4-180009 Y*O 16 09 59.3313757080 -18 00 09.066833856           M5e 39 0
49 ScoPMS 42a TT* 16 10 28.5604736088 -19 04 47.300449332     13.69     M3V 32 0
50 2MASS J16104636-1840598 LM* 16 10 46.3656092640 -18 40 59.927804976   19.5       M4.5 26 0
51 UCAC2 23893922 Em* 16 11 13.3078806264 -20 19 02.974403388           M3 16 1
52 V* V866 Sco Or* 16 11 31.345632 -18 38 25.96200   13.98 12.63 12.81   K0e+K5e 265 0
53 2MASS J16115091-2012098 TT* 16 11 50.9246191704 -20 12 09.858294468           M3.5V 19 0
54 NAME Upper Sco Association As* 16 12 -23.4           ~ 1222 1
55 2MASS J16122737-2009596 LM* 16 12 27.3788609184 -20 09 59.657956056           M4.5 19 0
56 [T64] 6 Em* 16 12 39.1668122808 -18 59 28.459379616   15.5   13.99 11.84 K2.5IV 30 1
57 UCAC4 325-083773 Ro* 16 13 36.5071753392 -25 03 47.736449460   15.997 15.128 15.461   M3.5 17 0
58 2MASS J16135434-2320342 LM* 16 13 54.3201573624 -23 20 34.610381412           M4.5 18 0
59 CD-22 11432 TT* 16 14 11.0697507472 -23 05 36.071480044   11.90 10.70   9.255 K2IV 72 0
60 [T64] 7 Y*O 16 14 20.2879618512 -19 06 48.064403304           K5e 56 0
61 IRAS 16114-1858 mul 16 14 22.1 -19 06 14           ~ 47 0
62 [PGZ2001] J161433.6-190013 Y*O 16 14 33.6717724656 -19 00 13.479169896           M3e 23 0
63 V* VV Sco Or* 16 15 34.56528 -22 42 42.1092     12.684   10.660 K5Ve+M0Ve 50 0
64 GSC 06209-00747 Em* 16 15 44.1705964824 -19 21 17.234880660   15.56 14.14     K5:Ve 24 0
65 UCAC4 324-083149 Ro* 16 16 33.4467816624 -25 21 50.657231124       14.886   M0.5 17 0
66 2MASS J16181904-2028479 Y*O 16 18 19.0518159768 -20 28 47.899349724           M4.75 16 0
67 GSC 06214-00210 TT* 16 21 54.6676915200 -20 43 09.140591496   13.62 12.38 12.11 11.08 M1e 67 0
68 2MASS J16270942-2148457 Y*O 16 27 09.4177667424 -21 48 45.686031120           M4.5 21 0
69 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3402 1
70 2MASS J16303390-2428062 Y*O 16 30 33.9092917536 -24 28 06.253892940           M4 19 0

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2022.10.06-18:18:08

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