2020ApJS..251...18T


Query : 2020ApJS..251...18T

2020ApJS..251...18T - Astrophys. J., Suppl. Ser., 251, 18-18 (2020/December-0)

Dippers from the TESS full-frame images. I. Results of the first one year data and discovery of a runaway dipper.

TAJIRI T., KAWAHARA H., AIZAWA M., FUJII M.S., HATTORI K., KASAGI Y., KOTANI T., MASUDA K., MOMOSE M., MUTO T., OHSAWA R. and TAKITA S.

Abstract (from CDS):

We present a comprehensive catalog of the dippers-young stellar objects that exhibit episodic dimming-derived from one year's worth of data of the Transiting Exoplanet Survey Satellite (TESS) full-frame images. In the survey, we found 35 dippers using the convolutional neural network, most of them newly discovered. Although these dippers are widely distributed over the first half-hemisphere that TESS surveyed, we identified the majority's membership with the nearest association Scorpius-Centaurus, Velorum OB2, and the nearby Orion molecular cloud complex. However, several dippers are likely to be located in the field. We also found three old dippers whose age exceeds 10 million years, which is considered to be the disk dissipation time. The color-color diagram indicates that these old dippers are likely to have an extreme debris disk. In particular, we found a runaway old dipper having a large three-dimensional velocity of 72 km s–1. The dippers in the field, which were probably escaping from their birth molecular clouds or were born outside the current area of star-forming regions, are more common than previously considered.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Protoplanetary disks - Variable stars - T Tauri stars

Simbad objects: 78

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Number of rows : 78
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 HD 2626 ** 00 30 19.9344223392 +59 58 39.189476856 5.59 5.95 5.94     B7IV 57 0
2 V* RZ Psc Ae* 01 09 42.0521542224 +27 57 01.910757240   12.20 11.29     G8V 70 0
3 BD+20 307 SB* 01 54 50.3440413288 +21 18 22.461011784   9.57 9.01     G0 101 0
4 HD 15407 PM* 02 30 50.6559832920 +55 32 54.256925724   7.43 6.95     F5V 74 0
5 Cl Melotte 20 OpC 03 26 28 +48 58.5           ~ 812 0
6 Cl Melotte 22 OpC 03 46 24 +24 06.8           ~ 3260 0
7 HD 23514 * 03 46 38.3922026460 +22 55 11.199934340 9.95 9.93 9.43 8.96 8.84 F5V 122 0
8 IRAS 04114+1150 TT? 04 14 18.7315208496 +11 58 12.750296844       12.08   ~ 3 0
9 NAME Cas-Tau As* 04 16 +27.6           ~ 70 1
10 2MASS J04263184-1100349 * 04 26 31.8564012744 -11 00 34.864788600           ~ 1 0
11 Cl Melotte 25 OpC 04 29 47 +16 56.9           ~ 2910 0
12 2MASS J04312387-1109168 Y*? 04 31 23.8691040336 -11 09 16.928201232           ~ 2 0
13 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4049 0
14 UCAC4 407-007523 * 04 59 59.9964822888 -08 41 36.448661112   14.455 13.565 13.454   ~ 3 0
15 HD 240779 PM* 05 06 55.4896989864 +10 59 53.060739252   10.53 9.88     G5 7 0
16 [KCS2018b] l1616-4 Cl* 05 11 12.17769763109 -02 36 55.5650019184           ~ 1 0
17 SDSS J051202.64-031900.6 Y*? 05 12 02.6398526736 -03 19 00.587287812           ~ 3 0
18 UCAC4 445-008861 Y*? 05 12 44.7383213856 -01 05 24.972416088   14.566 13.487 13.152   ~ 2 0
19 [KCS2018b] oriDS-5 Cl* 05 26 29.57732220670 -06 40 54.6334051998           ~ 1 0
20 CRTS J052648.6-063823 RS* 05 26 48.7083782616 -06 38 23.049353508     13.61     ~ 3 0
21 HD 290409 SB* 05 27 05.4733539480 +00 25 07.620275568   10.07 9.96     B8.5Ve 39 0
22 NAME Orion D Cl* 05 28 -02.0           ~ 14 0
23 [KCS2018b] oriCN-3 Cl* 05 28 20.24808696504 +01 10 17.1696885104           ~ 1 0
24 V* V1650 Ori Or* 05 29 11.4394458792 -06 08 05.402566536   11.02 10.39     F7 31 0
25 [KCS2018b] oriDS-1 Cl* 05 29 50.65089564022 -07 16 30.1908874512           ~ 1 0
26 ESO-HA 724 Em* 05 31 54.3449312688 -03 13 35.218070220           ~ 2 0
27 V* WX Ori TT* 05 34 07.3171439736 -05 13 45.376007124 16.580 15.187 14.344   12.624 K6 45 0
28 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2190 1
29 Cl Collinder 69 OpC 05 35 10 +09 48.8     2.8     ~ 279 0
30 NAME Ori Complex Cld 05 35.3 -05 23           ~ 404 0
31 [KCS2018b] onc-2 Cl* 05 35 20.74035644532 -04 51 41.8386840820           ~ 1 0
32 V* V2602 Ori Or* 05 35 48.5278474152 -05 56 23.187475932           ~ 12 0
33 Kiso A-0904 42 Y*O 05 35 54.2306480304 -01 23 05.656973964   17.45 16.25 16.28   ~ 5 0
34 NAME Orion C Cl* 05 36 +00.0           ~ 7 0
35 V* V1020 Ori TT* 05 37 07.7410448376 -05 52 54.677916696   15.6 14.4     K4e 16 0
36 [KCS2018b] B35-1 Cl* 05 38 08.63513925752 +09 25 30.1139831543           ~ 1 0
37 NAME Ori A MoC 05 38 -07.1           ~ 2881 0
38 [DM99] 211 Y*O 05 39 48.0120779592 +09 51 02.652706332     17.89 16.59 15.05 ~ 4 0
39 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1291 0
40 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1016 1
41 UCAC4 380-010618 * 05 57 53.7696306120 -14 05 25.315595016   12.89 12.54 12.38   ~ 3 0
42 UCAC4 110-012461 * 06 32 07.9792436400 -68 10 41.987335692           ~ 3 0
43 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 437 0
44 Cl* NGC 2422 PMS 1121 * 07 35 42.6918901416 -14 50 42.249024672 13.344 13.262 12.668 12.335 11.981 F9 15 0
45 UCAC4 223-017496 Y*? 07 47 31.9523776488 -45 30 40.752928548   15.296 14.105 13.849   ~ 3 0
46 2MASS J08090250-4858172 Y*O 08 09 02.5063872816 -48 58 17.289559668     13.13 12.73 12.32 G6-G7 31 0
47 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 254 0
48 * gam02 Vel WR* 08 09 31.95013 -47 20 11.7108 0.64 1.58 1.83 1.85 2.00 WC8+O7.5III-V 876 0
49 UCAC4 216-020320 Y*? 08 11 09.7669826280 -46 50 38.714790588   14.962 13.793 13.499   ~ 5 0
50 V* EP Cha Or* 08 47 01.6439909496 -78 59 34.380161016     11.1     K5 84 0
51 UCAC4 084-018613 Y*? 09 43 20.8142288256 -73 15 44.196078456   16.043 14.733 14.588   ~ 2 0
52 NAME TW Hya Association As* 11 01.9 -34 42           ~ 903 0
53 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1085 1
54 Hn 21W Y*O 11 14 24.5192431416 -77 33 06.402087756     18.20   14.24 M4e 31 0
55 2MASS J11393015-5903446 * 11 39 30.1507032672 -59 03 44.612772480           ~ 3 0
56 TWA 33 Y*? 11 39 33.8249537040 -30 40 00.365859300   16.71 15.06 14.85   M5.5e 27 0
57 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 756 0
58 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 432 1
59 NAME Cha III MoC 12 37.8 -80 15           ~ 135 2
60 UCAC4 165-093158 Y*? 12 43 30.4465294440 -57 03 18.586694196   16.071 14.612 14.458   ~ 4 0
61 NAME Cha II MoC 12 54 -77.2           ~ 320 0
62 UCAC4 094-038759 Y*? 12 57 12.4023859440 -71 19 34.549177260           ~ 4 0
63 Hn 23 Y*O 13 04 24.1091476992 -76 50 01.203848088           K7e 22 0
64 2MASS J13305230-5218578 * 13 30 52.3159011936 -52 18 57.870321696           ~ 2 0
65 2MASS J13373839-4736297 * 13 37 38.3988543864 -47 36 29.715851232           ~ 8 0
66 2MASS J13534569-4533032 * 13 53 45.6927047040 -45 33 03.290641524           ~ 1 0
67 NAME Upper Centaurus Lupus As* 15 24 -41.9           ~ 428 1
68 2MASS J15474587-3513194 * 15 47 45.8802876264 -35 13 19.533633240           ~ 1 0
69 V* R CrB RC* 15 48 34.4154827352 +28 09 24.295852440 6.44 6.31 5.71 5.26 5.08 G0Iep 768 0
70 RX J1608.8-2835 ** 16 08 49.987488 -28 35 52.69632   16.087 14.166 13.999   ~ 2 0
71 HD 145263 * 16 10 55.1057129784 -25 31 21.669357756   9.39 8.98     F2V 68 0
72 NAME Upper Sco Association As* 16 12 -23.4           ~ 1236 1
73 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1258 1
74 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3416 1
75 UCAC4 238-106125 Y*? 16 30 03.7158737784 -42 26 58.698520728   14.787 13.402 13.132   ~ 4 0
76 Kepler-1520b Pl 19 23 51.8899069766 +51 30 16.983558676           ~ 70 1
77 UCAC4 301-274342 * 22 47 39.8833782048 -29 50 49.084214100   12.627 12.085 12.213   ~ 1 0
78 NAME Carina Association As* ~ ~           ~ 142 1

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2022.11.26-10:33:06

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