2014MNRAS.437.3133G


Query : 2014MNRAS.437.3133G

2014MNRAS.437.3133G - Mon. Not. R. Astron. Soc., 437, 3133-3143 (2014/February-1)

Trawling for transits in a sea of noise: a search for exoplanets by analysis of WASP optical light curves and follow-up (SEAWOLF).

GAIDOS E., ANDERSON D.R., LEPINE S., COLON K.D., MARAVELIAS G., NARITA N., CHANG E., BEYER J., FUKUI A., ARMSTRONG J.D., ZEZAS A., FULTON B.J., MANN A.W., WEST R.G. and FAEDI F.

Abstract (from CDS):

Studies of transiting Neptune-sized planets orbiting close to nearby bright stars can inform theories of planet formation because mass and radius and therefore mean density can be accurately estimated and compared with interior models. The distribution of such planets with stellar mass and orbital period relative to their Jovian-mass counterparts can test scenarios of orbital migration, and whether `hot' (period <10 d) Neptunes evolved from `hot' Jupiters as a result of mass loss. We searched 1763 late K and early M dwarf stars for transiting Neptunes by analysing photometry from the Wide Angle Search for Planets and obtaining high-precision ( ≤ 10–3) follow-up photometry of stars with candidate transit signals. One star in our sample (GJ 436) hosts a previously reported hot Neptune. We identified 92 candidate signals among 80 other stars and carried out 148 observations of predicted candidate transits with 1-2m telescopes. Data on 70 WASP signals rules out transits for 39 of them; 28 other signals are ambiguous and/or require more data. Three systems have transit-like events in follow-up photometry and we plan additional follow-up observations. On the basis of no confirmed detections in our survey, we place an upper limit of 10.2percent on the occurrence of hot Neptunes around late K and early M dwarfs (95percent confidence). A single confirmed detection would translate to an occurrence of 5.3±4.4percent. The latter figure is similar to that from Doppler surveys, suggesting that GJ 436b may be the only transiting hot Neptune in our sample. Our analysis of Kepler data for similar but more distant late-type dwarfs yields an occurrence of 0.32±0.21percent. Depending on which occurrence is applicable, we estimate that the Next Generation Transit Survey will discover either ∼ 60 or ∼ 1000 hot Neptunes around late K- and early M-type dwarfs.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): techniques: photometric - surveys - planets and satellites: detection - planets and satellites: formation - planets and satellites: general - stars: late-type

VizieR on-line data: <Available at CDS (J/MNRAS/437/3133): table1.dat table2.dat table3.dat>

Nomenclature: Table 2: [GAL2014] JHHMMm+DDMM N=80.

CDS comments: GJ 3740b is a misprint for GJ 3470b.

Simbad objects: 87

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Number of rows : 87
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 UCAC2 39249563 PM* 00 17 43.1958746424 +21 00 05.006715156   13.43 12.22 11.80   ~ 1 0
2 LP 406-78 PM* 00 49 17.1586823208 +20 03 45.902968668       10.3   ~ 16 0
3 BD+16 120 PM* 01 08 40.3591538138 +17 14 33.361427532       10.208   K7V 47 0
4 PM J01550+4035 PM* 01 55 00.9806810376 +40 35 06.116901972   14.95 13.45 12.987   ~ 3 0
5 UCAC2 42874636 PM* 01 57 50.0200687704 +31 30 41.923996776   13.12 12.03 11.66   ~ 1 0
6 PM J01587+3515 ** 01 58 43.630176 +35 15 28.06524   14.82 13.30 12.82   ~ 4 0
7 PM J02083+2919 PM* 02 08 18.3501393504 +29 19 59.145650256   13.84 12.49 12.082   ~ 4 0
8 LSPM J0211+2707S PM* 02 11 11.2420221144 +27 07 34.381851924   13.8   12.609   ~ 5 0
9 LSPM J0219+2456 PM* 02 19 17.4779776560 +24 56 38.407361892   14.8   13.304   ~ 9 0
10 G 74-20 PM* 02 21 11.7589300824 +31 44 26.783320308   14.4   12.609   ~ 9 0
11 G 94-77 PM* 02 30 08.4897881568 +25 37 19.947520308       10.547   K7V 16 0
12 PM J02404+3811 PM* 02 40 29.2182679464 +38 11 30.416539488   14.14 12.70 12.24   ~ 3 0
13 G 134-56 PM* 02 56 27.4913014344 +39 17 21.946788384   12.99   11.1   K5 7 0
14 PM J03435+3303 PM* 03 43 32.189376 +33 03 28.85220   14.74 13.18 12.80   ~ 6 0
15 PM J03532+3906 ** 03 53 14.524800 +39 06 27.77904   14.26 12.76 12.43   ~ 3 0
16 PM J03571+3023E PM* 03 57 10.9546172856 +30 23 40.292746800   14.40 12.95 12.345   ~ 3 0
17 Wolf 1320 PM* 03 59 06.1017507768 +25 17 31.982118072   14.97 14.128 11.650   K5V 23 0
18 Wolf 1322 PM* 03 59 53.6655651950 +26 05 23.613115060   14.14 12.610 12.252 10.08 M4V 51 0
19 UCAC3 220-19051 SB* 04 14 23.6280790752 +19 56 13.880131080   13.23 12.07 11.82   ~ 1 0
20 K2-136 PM* 04 29 38.9939167752 +22 52 57.793533924   12.48 11.20 10.90   K5.5V 52 0
21 LP 302-41 PM* 04 39 31.1683323528 +30 50 31.180770600   13.53   11.912   ~ 8 0
22 UCAC2 42715669 PM* 04 52 45.6546262512 +31 14 42.743346360   13.22 12.13 11.88   ~ 1 0
23 NAME LP 424-4b Pl 07 59 05.8395356736 +15 23 29.236065000           ~ 298 1
24 Ross 905b Pl 11 42 11.0933350978 +26 42 23.650782778           ~ 805 1
25 Ross 905 PM* 11 42 11.0933350978 +26 42 23.650782778   12.06 10.613 10.272 8.24 M3V 636 1
26 LSPM J1146+2659 PM* 11 46 19.7250376704 +26 59 11.219990604   11.47   10.35   K1V 6 0
27 LP 322-528 PM* 13 05 14.4898766136 +30 29 08.367664596   14.58   12.607   M1.0 10 0
28 HAT-P-26b Pl 14 12 37.5331103311 +04 03 36.116569918           ~ 161 1
29 BD+33 2433 PM* 14 16 13.6439918854 +32 34 41.711515681   10.67   8.9   K5 15 0
30 G 165-61 LM* 14 17 02.770680 +31 42 46.67904   14.73 13.108 12.831   M4.5Ve 60 0
31 PM J14591+2401 PM* 14 59 10.1119791000 +24 01 52.703603472   13.78 12.48 12.11   ~ 3 0
32 G 167-12 PM* 15 01 35.9137868012 +24 00 11.786047150   13.4   11.4   ~ 11 0
33 PM J15054+2338 PM* 15 05 24.1102192152 +23 38 08.862002664   14.11 12.57 12.14   ~ 3 0
34 PM J15271+3847 PM* 15 27 06.5912473104 +38 47 13.609238892     12.767 12.325   M1.4 6 0
35 G 179-46 PM* 15 42 04.3965037589 +34 39 01.867851428       11.252   M0V 23 0
36 LSPM J1555+4224 PM* 15 55 05.351 +42 24 38.95   13.06   11.60   ~ 5 0
37 MCC 754 SB* 15 57 33.8829724128 +34 32 22.756967736       10.432   K5V 25 0
38 G 203-7 PM* 16 30 38.9025017304 +41 09 27.176902776   14.98   13.052   M2.5 11 0
39 LP 276-2 PM* 16 38 54.3414148824 +36 43 01.633222632   14.4   12.414   M2.0 10 0
40 Ross 813 PM* 16 44 12.0213025227 +34 55 20.113922514       11.255   K4 14 0
41 LP 387-31 PM* 17 00 20.3283691512 +25 21 02.971954836   14.88   12.827   M3.16 22 0
42 LP 388-21 PM* 17 20 22.7859562848 +24 32 43.418556672       10.782   K5V 14 0
43 Wolf 713 PM* 17 22 53.5670260776 +37 48 08.274356100   13.26 12.05 11.64   ~ 3 0
44 BD+23 3151A PM* 17 37 48.7002864168 +22 57 20.090682360   11.20 9.93 9.1   M0.5V 58 0
45 Wolf 1386 PM* 17 46 43.8917981305 +50 03 06.243030762   11.94   10.174   K4V 27 0
46 UCAC3 263-136491 PM* 17 47 54.4007662056 +41 27 25.766419500   13.02 11.91 11.62   ~ 1 0
47 PM J17547+4109 PM* 17 54 47.8701938760 +41 09 31.053808512   14.23 12.63 12.28   M2 6 0
48 LSPM J1757+4837 PM* 17 57 37.2743820264 +48 37 34.596990732   14.50   12.595   ~ 6 0
49 Wolf 1398 ** 17 59 18.07600 +49 02 11.3817   12.89 11.584 11.149   K7/M0V 27 0
50 PM J17596+4516 PM* 17 59 36.8981139264 +45 16 17.610347352   14.16 12.94 12.399   ~ 4 0
51 UCAC2 43290821 PM* 18 02 14.0727364416 +32 52 51.240415044       11.62   ~ 1 0
52 LSPM J1807+4402 SB* 18 07 35.3903623104 +44 02 02.355544176       10.5   ~ 5 0
53 LSPM J1820+3122S PM* 18 20 14.1298891056 +31 22 42.140400744   12.5   11.48   ~ 4 0
54 PM J18207+3206 ** 18 20 44.048904 +32 06 31.40316       12.71   ~ 2 0
55 UCAC2 43294052 PM* 18 25 24.5916578760 +32 55 33.486287016       11.74   ~ 1 0
56 PM J18324+3629 PM* 18 32 25.8515316864 +36 29 40.170386148       11.86   ~ 3 0
57 PM J18338+4844 PM* 18 33 53.3030965920 +48 44 01.198629312   14.44 12.97 12.530   ~ 4 0
58 LP 229-17 LM* 18 34 36.6521805504 +40 07 26.384102544       11.104   M4V 76 0
59 G 205-29 PM* 18 35 17.8461374241 +41 29 14.926024479   13.33 11.750 11.322   M2.0V 27 0
60 PM J18384+5040 PM* 18 38 27.7663547880 +50 40 33.031157952   13.92 12.65 12.28   ~ 4 0
61 BD+47 2936b Pl 19 50 50.2472976936 +48 04 51.101390496           ~ 413 1
62 PM J20354+0618 PM* 20 35 25.7307665736 +06 18 30.659117724       12.242   ~ 4 0
63 BD+10 4379 PM* 20 47 16.8401049409 +10 51 36.468820245   10.72 9.73 9.46   K2 33 0
64 G 25-10 PM* 20 57 16.2655916752 +12 00 24.329016164   13.756 12.335 11.972   ~ 16 0
65 G 145-11 PM* 21 05 07.7753428415 +14 35 27.973586638   14.212 12.822 12.363   M2.5 24 0
66 LP 516-37 PM* 21 06 41.8476999288 +14 36 18.540588060       11.5   ~ 7 0
67 UCAC2 41978193 PM* 21 28 13.8421704984 +28 59 59.448206832   13.69 12.34 11.91   ~ 1 0
68 StKM 1-1899 PM* 21 28 32.4667380432 +23 13 49.919405844   12.97 11.67 11.23   K7 4 0
69 G 126-5 PM* 21 30 16.7483271158 +23 12 03.833018973   14.62   12.582   ~ 19 0
70 LSPM J2133+2212 PM* 21 33 28.9088829192 +22 12 37.548094572   14.69   12.733   M3 9 0
71 UCAC2 40108837 PM* 21 39 20.7327118512 +23 19 25.816769688   13.29 12.07 11.66   ~ 3 0
72 G 126-23 PM* 21 40 56.8041788691 +18 24 25.321776560       10.8   ~ 8 0
73 G 126-35 PM* 21 46 19.3684719552 +14 37 54.572606256       10.405   K5V 17 0
74 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1104 1
75 Wolf 1157 PM* 22 03 24.9292151064 +32 17 34.901551716   14.92   12.907   ~ 10 0
76 PM J22085+1425 PM* 22 08 32.6888076840 +14 25 13.700371404   14.07 12.71 12.233   ~ 2 0
77 StKM 1-1990 PM* 22 13 17.8867580976 +23 42 58.740969312   13.17 11.98 11.55   K5 3 0
78 PM J22196+1257N PM* 22 19 41.4306661416 +12 57 52.394534676   13.96 12.654 12.16   ~ 5 0
79 UCAC3 226-294744 PM* 23 03 46.9123530888 +22 52 11.093656728   13.54 12.30 11.94   ~ 1 0
80 LP 401-46 PM* 23 07 03.5001348048 +23 58 02.083734624   14.45   12.998   ~ 8 0
81 PM J23105+2717 ** 23 10 33.393192 +27 17 30.15420   13.60 12.15 11.63   ~ 3 0
82 PM J23311+4058 ** 23 31 06.567888 +40 58 06.12804   14.54 13.00 12.52   ~ 3 0
83 Ross 298 PM* 23 35 03.8630003952 +25 14 57.430661208   14.59   12.544   M3 20 0
84 LP 463-401 PM* 23 37 12.0413064720 +21 00 14.739224760       11.744   K5V 11 0
85 PM J23462+2826 PM* 23 46 14.0701684776 +28 26 03.886931580   14.62 12.96 12.605   M3.5V 14 0
86 PM J23492+3458 PM* 23 49 17.7822388224 +34 58 44.744031156   14.15 12.63 12.305   ~ 6 0
87 LSPM J2358+2115 PM* 23 58 22.6970668704 +21 15 58.783819176   14.76   12.785   ~ 7 0

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