2005ApJ...623..493C

Query : 2005ApJ...623..493C

2005ApJ...623..493C - Astrophys. J., 623, 493-501 (2005/April-2)

A Spitzer study of dusty disks in the Scorpius-Centaurus OB association.

CHEN C.H., JURA M., GORDON K.D. and BLAYLOCK M.

Abstract (from CDS):

We have obtained Spitzer Space Telescope MIPS observations of 40 F- and G-type common proper motion members of the Scorpius-Centaurus OB association with ages between 5 and 20 Myr at 24 and 70 µm. We report the detection of 14 objects that possess 24 µm fluxes ≥30% larger than their predicted photospheres, tentatively corresponding to a disk fraction of ≥35%, including seven objects that also possess 70 µm excesses ≥100 times larger than their predicted photospheres. The 24 µm plus 70 µm excess sources possess high fractional infrared luminosities, LIR/L*=7x10–4 to 3x10–3; either they possess optically thin, dusty β Pictoris-like disks or compact, opaque HD 98800-like disks.

Abstract Copyright: ∼

Journal keyword(s): Stars: Circumstellar Matter - Galaxy: Open Clusters and Associations: Individual: Name: Sco-Cen Association - Stars: Planetary Systems: Formation

Simbad objects: 55

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Number of rows : 55
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 NAME THA MGr 00 00 -62.0           ~ 540 0
2 V* TW Hya TT* 11 01 51.9053285064 -34 42 17.033218380   11.94 10.50 10.626 9.18 K6Ve 2144 1
3 NAME TW Hya Association As* 11 01.9 -34 42           ~ 1018 0
4 TWA 3 ** 11 10 27.894072 -37 31 51.96612   13.53 12.05 11.61 9.29 M4Ve+M4Ve 218 0
5 TWA 3A TT* 11 10 27.9121410480 -37 31 51.535547940   14.04 12.57   9.10 M4Ve 221 0
6 HD 98660 * 11 19 52.7450058384 -70 37 06.479311728   8.54 8.14     F2V 39 1
7 HD 98800B SB* 11 22 05.2890267409 -24 46 38.767455498   11.18 9.92     ~ 144 1
8 HD 98800 TT* 11 22 05.28975 -24 46 39.7571   10.20 9.28 9.26 7.386 K5V(e) 401 0
9 HD 103234 * 11 53 08.0084609400 -56 43 38.101171800   8.65 8.25     F2IV/V 44 1
10 HD 103599 * 11 55 43.5475258056 -54 10 50.488820364   8.70 8.30     F3IV 34 1
11 HD 103703 * 11 56 26.5636970352 -58 49 16.835549772   8.92 8.50     F3V 53 1
12 HD 104231 * 12 00 09.4063855272 -57 07 01.995816216   9.03 8.54   8.786 F5V 44 0
13 HD 104897 * 12 04 44.4772871160 -52 21 15.634091592   8.80 8.41     F3V 33 1
14 HD 105070 Or* 12 05 47.4817082016 -51 00 12.070921608   9.50 9.005   8.216 G2IV 43 1
15 HD 106218 * 12 13 22.3423489992 -56 53 35.649088296   9.00 8.56     F2V 32 1
16 HD 106444 Y*O 12 14 50.7229738080 -55 47 23.527662720   8.94 8.155   7.535 F5V 49 0
17 HD 106906 * 12 17 53.1915103944 -55 58 31.893027240   8.95 8.89 8.46   F5V 179 0
18 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 565 1
19 HD 107920 * 12 24 18.2636287944 -58 58 35.216973624   8.92 8.52     F3V 37 1
20 HD 108568 Or* 12 28 40.0538161512 -55 27 19.335000636   9.50 8.954   8.269 G1IV 35 1
21 HD 108611 Or* 12 29 02.2523641896 -64 55 00.636825720   9.75 9.05     G5V 42 1
22 HD 109573 TT* 12 36 01.0317461592 -39 52 10.220465388   5.786 5.774   5.81 A0V 684 1
23 HD 111102 * 12 47 39.2013079200 -58 17 51.263083428   7.195 6.942     F0III 41 1
24 HD 111104 ** 12 47 41.8175421000 -58 25 55.841712348   8.39 8.04     F0 38 0
25 HD 112509 Or* 12 57 57.7842798024 -52 36 54.556177140   8.76 8.41     F3IV/V 39 0
26 HD 113376 SB* 13 04 30.9673296408 -65 55 18.463914660   9.17 8.49     G3V 46 0
27 HD 113556 * 13 05 32.6038015368 -58 32 07.960131600   8.50 8.14     F2V 58 1
28 HD 113766 ** 13 06 35.83622 -46 02 02.0178           F3/5V 112 0
29 HD 114082 * 13 09 16.1926316904 -60 18 30.055543200   8.64 8.21     F3V 104 1
30 HD 115600 * 13 19 19.5409822176 -59 28 20.441034660   8.59 8.22     F2IV/V 87 1
31 HD 117214 * 13 30 08.9748682296 -58 29 04.356014100   8.55 8.06     F6V 84 1
32 HD 117945 ** 13 35 08.0918705459 -58 21 59.317903254           F7V 35 0
33 HD 119022 Or* 13 43 08.6942842 -69 07 39.480199   9.01 7.644   6.824 G5IV 47 1
34 HD 119511 * 13 44 43.9457189952 -49 17 57.736509288   8.86 8.46     F3V 46 1
35 HD 125912 * 14 23 37.8770562 -43 57 42.857587   8.72 8.13     F7V 39 1
36 HD 133075 * 15 03 31.9294762104 -31 22 34.415042988   8.44 7.95     F3IV 42 1
37 NAME Upper Centaurus Lupus MGr 15 24 -41.9           ~ 567 1
38 HD 136991 * 15 24 56.1277658644 -37 30 05.584984015   8.92 8.52     F3V 21 0
39 HD 137130 * 15 25 09.3935591904 -26 34 30.986988168   8.71 8.32     F0V 27 1
40 HD 138009 TT* 15 30 26.23621 -32 18 12.9163   10.01 9.47 9.27   G6V 38 0
41 HD 138398 * 15 33 51.9258168360 -50 05 23.902295568   9.12 8.29     G5/8III+F 20 1
42 HD 138994 SB* 15 36 53.4913585944 -38 10 51.031892460   8.57 8.19     F2V 36 1
43 HD 139883 * 15 41 53.2182290136 -34 53 19.905055908   8.75 8.36     F2V 51 1
44 HD 142113 Ro* 15 53 20.8849695960 -19 23 53.577891024   9.99 9.284   8.360 F8V 38 1
45 HD 143006 Or* 15 58 36.9126279888 -22 57 15.220559196   10.92 10.14   8.70 G5IVe 338 0
46 HD 143677 TT* 16 03 45.3645926 -43 55 49.198300 11.09 10.57 9.681 9.14 8.664 K0IV 46 1
47 HD 144225 ** 16 06 09.38617 -38 02 18.2763           F3V 38 0
48 HD 145208 Or* 16 10 28.8804245352 -22 13 47.839440360   10.47 9.685   8.580 G7IV(e) 48 1
49 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
50 CD-22 11432 TT* 16 14 11.0697507472 -23 05 36.071480044   11.90 10.70   9.255 K2IV 86 0
51 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
52 HD 148040 Ro* 16 26 29.9117541408 -27 41 20.246258940   9.19 8.61     G0V 50 1
53 HD 148153 * 16 27 12.5236340112 -27 11 21.924455244   8.66 8.25     F5V 45 0
54 HD 152057 * 16 52 13.3140691992 -26 55 10.818494040   8.68 8.32     F0V 36 1
55 V* AK Sco Ae* 16 54 44.8491575376 -36 53 18.566586456 9.80 9.63 9.00     F5V 304 1

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