2012ApJ...745...23M

Query : 2012ApJ...745...23M

2012ApJ...745...23M - Astrophys. J., 745, 23 (2012/January-3)

The late stages of protoplanetary disk evolution: a millimeter survey of Upper Scorpius.

MATHEWS G.S., WILLIAMS J.P., MENARD F., PHILLIPS N., DUCHENE G. and PINTE C.

Abstract (from CDS):

We present deep 1.2 mm photometry of 37 stars in the young (5 Myr) Upper Scorpius OB association, sensitive to ∼4x10–3 MJup of cool millimeter dust. Disks around four low- and solar-mass stars are detected, as well as one debris disk around an intermediate-mass star, with dust masses ranging from 3.6x10–3 to 1.0x10–1 MJup. The source with the most massive disk exhibits a transition-disk spectral energy distribution. Combining our results with previous studies, we find that the millimeter-detection fraction of Class II sources has significantly decreased from younger ages, and comparison with near-infrared and Hα measurements indicates that the present disks have undergone significant evolution in composition or structure at all radii. The disks of Upper Scorpius represent the tail-end of the depletion of primordial disks; while a few near-solar-mass stars may still sustain giant planet formation, this process has finished around higher mass stars.

Abstract Copyright: ∼

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

Simbad objects: 49

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Number of rows : 49
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 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
2 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
3 Cl Collinder 69 OpC 05 35 32.1 +09 44 02     2.8     ~ 369 0
4 NGC 2362 OpC 07 18 41.9 -24 57 08           ~ 428 0
5 HD 138813 * 15 35 16.1061129072 -25 44 02.992593372   7.37 7.30     A0V 91 0
6 2MASS J15355780-2324046 TT* 15 35 57.8066655408 -23 24 04.590783648   13.1       K3 29 0
7 GSC 06781-00908 Or* 15 44 13.3464077640 -25 22 59.115801540   14.4       M1 25 0
8 HD 142097 * 15 53 21.9261091440 -21 58 16.647117852   8.80 8.39     A5V 53 0
9 HD 142315 SB* 15 54 41.5962061728 -22 45 58.513986900   6.887 6.861     B9V 126 0
10 [PBB2002] USco J155624.8-222555 Or* 15 56 24.7721806584 -22 25 55.313778144           M4e 46 0
11 HD 142705 Ro* 15 56 47.8547012448 -23 11 02.668136316   7.92 7.74     A1Vann 69 0
12 [PBB2002] USco J155706.4-220606 Or* 15 57 06.4171109616 -22 06 06.069941460           M4e 45 0
13 UScoCTIO 13 Or* 15 57 29.8458656448 -22 58 44.104383876           M4e 42 0
14 RX J155829.5-231026 TT* 15 58 29.8128891888 -23 10 07.752769680           M3e 64 0
15 RX J1600.7-2343 TT* 16 00 44.650608 -23 43 14.71620   17.294 15.573 15.069   M2 19 0
16 RX J1601.1-2113 Or* 16 01 08.0169370824 -21 13 18.555249216   13.9 12.511 12.0 10.785 M0 35 0
17 UScoCTIO 70 Or* 16 02 10.9529499936 -20 07 49.573784208           M5e 33 0
18 [PGZ2001] J160245.4-193037 Or* 16 02 45.4530310824 -19 30 37.934375436           M5e 28 0
19 RX J1603.9-2031 TT* 16 03 57.6711677256 -20 31 05.604697272   13.4   11.73 10.92 K5 75 0
20 [PGZ2001] J160357.9-194210 Or* 16 03 57.9355222272 -19 42 10.905101028           M2e 57 0
21 ATO J241.0901-21.5080 Or* 16 04 21.6547947840 -21 30 28.550063304   13.3       K2 190 0
22 [PGZ2001] J160525.5-203539 Or* 16 05 25.5644653296 -20 35 39.946484364           M5e 38 0
23 [PGZ2001] J160532.1-193315 LM* 16 05 32.1520016280 -19 33 16.012868364           M5e 73 0
24 [PGZ2001] J160545.4-202308 Or* 16 05 45.3995129856 -20 23 08.809297440           M2e 54 0
25 [PGZ2001] J160600.6-195711 LM* 16 06 00.601632 -19 57 11.09520       15.92   M5e 32 0
26 ScoPMS 31 TT* 16 06 21.9398106936 -19 28 44.802473268     13.47     M0.5V 56 0
27 [PGZ2001] J160622.8-201124 Or* 16 06 22.7834979936 -20 11 24.359434620           M5e 49 0
28 [PGZ2001] J160702.1-201938 LM* 16 07 02.11800 -20 19 38.7696           M5e 38 0
29 HD 144587 * 16 07 29.9253920088 -23 57 02.448991044   8.73 8.31     A9V 67 0
30 [T64] 3 Or* 16 08 23.2468097568 -19 30 00.977031108         11.79 K9e 75 0
31 [PGZ2001] J160827.5-194904 Or* 16 08 27.5104444296 -19 49 05.061066924           M5e 40 0
32 [PBB2002] USco J160900.0-190836 Or* 16 09 00.0227996640 -19 08 36.865209012           M5e 51 0
33 [PGZ2001] J160900.7-190852 TT* 16 09 00.7592409720 -19 08 52.680361920           M1.0V 94 0
34 HD 144981 ** 16 09 20.8887100392 -19 27 25.962756444   8.22 8.04     A0.5Vn 69 0
35 RX J1609.5-2105 Or* 16 09 30.3075290712 -21 04 58.943800992   14.21 12.77 12.25 10.99 M0.0e 103 0
36 [PBB2002] USco J160953.6-175446 Or* 16 09 53.6173365312 -17 54 47.434100292           M3e 43 0
37 [PGZ2001] J160959.4-180009 Or* 16 09 59.3313757080 -18 00 09.066833856           M5e 54 0
38 1RXS J161115.1-175741 Or* 16 11 15.3441540480 -17 57 21.429672984           M1e 54 0
39 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
40 HD 145554 * 16 12 21.8331209856 -19 34 44.569291728   7.77 7.64     B9V 106 0
41 HD 145631 * 16 12 44.1005428344 -19 30 10.348834320   7.73 7.60     B9Vann 107 0
42 CD-22 11432 TT* 16 14 11.0697507472 -23 05 36.071480044   11.90 10.70   9.255 K2IV 86 0
43 [T64] 7 Or* 16 14 20.2879618512 -19 06 48.064403304           K5e 78 0
44 IRAS 16114-1858 mul 16 14 22.1 -19 06 14           ~ 49 0
45 HD 146606 * 16 18 16.1597216880 -28 02 30.148755612   7.05 7.06     A0V 73 0
46 HD 147137 dS* 16 20 50.2312331112 -22 35 38.789976084   9.42 9.03   8.44 A9V 73 0
47 HD 147220 dS* 16 21 21.1457028504 -22 06 32.249997432   9.04 8.59   8.02 A9V 52 0
48 GSC 06214-00210 TT* 16 21 54.6676915200 -20 43 09.140591496   13.62 12.38 12.11 11.08 M1e 89 0
49 NAME IRAS 16293-2422B Y*O 16 32 22.63 -24 28 31.8           ~ 352 0

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