2021AJ....161..247F


Query : 2021AJ....161..247F

2021AJ....161..247F - Astron. J., 161, 247-247 (2021/May-0)

NEMESIS: Exoplanet transit Survey of nearby M-dwarfs in TESS FFIs. I.

FELIZ D.L., PLAVCHAN P., BIANCO S.N., JIMENEZ M., COLLINS K.I., VILLARREAL ALVARADO B. and STASSUN K.G.

Abstract (from CDS):

In this work, we present an analysis of 33,054 M-dwarf stars, located within 100 parsecs, via the Transiting Exoplanet Survey Satellite (TESS) full-frame images (FFIs) of observed sectors 1-5. We present a new pipeline called NEMESIS, developed to extract detrended photometry, and to perform transit searches of single-sector data in TESS FFIs. As many M-dwarfs are faint, and are not observed with a two-minute cadence by TESS, FFI transit surveys can provide an empirical validation of how many planets are missed, using the 30-minute cadence data. In this work, we detect 183 threshold crossing events, and present 29 candidate planets for sectors 1-5, 24 of which are new detections. Our sample contains orbital periods ranging from 1.25 to 6.84 days, and planetary radii from 1.26 to 5.31 R⊕. With the addition of our new planet candidate detections, along with detections previously observed in sectors 1-5, we calculate an integrated occurrence rate of 2.49 ± 1.58 planets per star, for the period range ∈ [1, 9] days, and planet radius range ∈ [0.5,11] R⊕. We project an estimated yield of 122 ± 11 transit detections of nearby M-dwarfs. Of our new candidates, 23 have signal-to-noise ratios >7, transmission spectroscopy metrics >38, and emission spectroscopy metrics >10. We present all of our data products for our planet candidates via the Filtergraph data visualization service, located at https://filtergraph.com/NEMESIS.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Exoplanet astronomy - Exoplanet detection methods - M dwarf stars - Transit photometry - M stars

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 35

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Number of rows : 35
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 CD-27 16 PM* 00 09 04.3584267491 -27 07 19.678692956 14.332 13.184 11.670 10.729 9.763 M0V 76 0
2 2MASS J00235732-5531435 PM* 00 23 57.3345882888 -55 31 43.596848208           M4.1 18 0
3 G 268-38 PM* 00 44 59.3309137511 -15 16 17.542839990     14.150 13.801 11.19 M4.5V 197 0
4 NAME G 268-38b Pl 00 44 59.3309137511 -15 16 17.542839990           ~ 237 0
5 NAME G 268-38c Pl 00 44 59.3309137511 -15 16 17.542839990           ~ 95 0
6 WT 15 PM* 00 59 17.1833454981 -59 12 16.815186072   15.5       ~ 8 0
7 LEHPM 1168 PM* 01 01 28.7123484216 -46 32 32.872496280           ~ 5 0
8 SCR J0156-7157 PM* 01 56 40.3358677008 -71 57 12.741734448   14.47   12.26 11.33 ~ 6 0
9 PM J02489-1432W PM* 02 48 59.2728446101 -14 32 14.942011299       12.677 10.72 M2.0 40 0
10 PM J02489-1432E PM* 02 48 59.8297051819 -14 32 16.231249340   14.111 12.706 13.039 10.95 M2.5 20 0
11 UPM J0252-6741 PM* 02 52 04.4900042256 -67 41 15.569403216   16.73 15.05 14.82   ~ 15 0
12 BD-17 588A PM* 03 01 51.3936681048 -16 35 36.031178525 13.444 12.191 10.529 9.364 7.887 M3V 113 0
13 LP 711-47 PM* 03 05 01.4110377864 -11 05 38.253954408     16.07     ~ 5 0
14 LP 994-91 PM* 03 17 02.9761531523 -42 14 32.537542994     13.793 13.510   M3 22 0
15 L 375-2 PM* 04 32 42.6349227751 -39 47 12.150012739   13.5 12.482 12.131 10.26 M2.0 55 0
16 NAME L 231-32c Pl 04 33 39.7200127728 -51 57 22.435373160           ~ 45 0
17 NAME L 231-32b Pl 04 33 39.7200127728 -51 57 22.435373160           ~ 49 0
18 NAME L 231-32d Pl 04 33 39.7200127728 -51 57 22.435373160           ~ 128 0
19 L 231-32 PM* 04 33 39.7200127728 -51 57 22.435373160     12.617 12.147   M3.0V 83 0
20 2MASS J04531259-4423376 * 04 53 12.5941380240 -44 23 37.602920688           ~ 3 0
21 TOI-269 PM* 05 03 23.0610114456 -54 10 37.924879404   15.969 14.410 13.920   M2 20 0
22 1RXS J050514.2-475625 PM* 05 05 14.4284259960 -47 56 15.526276908   15.960 14.365 14.157   ~ 36 0
23 NAME SEP reg 06 00 00.000 -66 33 38.55           ~ 198 0
24 TOI-700 PM* 06 28 23.2285331376 -65 34 45.520447908   14.524 13.076 12.659 10.70 M2V 84 0
25 TOI-700d Pl 06 28 23.2285331376 -65 34 45.520447908           ~ 64 0
26 TOI-700b Pl 06 28 23.2285331376 -65 34 45.520447908           ~ 18 0
27 TOI-700c Pl 06 28 23.2285331376 -65 34 45.520447908           ~ 17 0
28 LP 873-25 PM* 21 16 45.3224365680 -25 47 10.679946468     15.01     ~ 6 0
29 WT 880 PM* 22 11 47.2993627416 -58 56 42.251593524   16.0       ~ 23 0
30 K2-54b Pl 22 32 13.0045873824 -17 32 38.476944384           ~ 9 0
31 K2-54 * 22 32 13.0045873824 -17 32 38.476944384   15.43 14.04 14.10 12.81 ~ 21 0
32 NAME L 119-213b Pl 22 41 58.1171811377 -69 10 08.320741850           ~ 146 0
33 L 119-213 PM* 22 41 58.1171811377 -69 10 08.320741850   17.3 15.26 13.74 11.88 ~ 73 0
34 LP 821-31 PM* 22 54 50.4142163775 -18 54 42.581503818     13.354 13.044   M2.5V 23 0
35 LEHPM 5926 PM* 23 32 58.2700309449 -29 24 54.190916756           ~ 21 0

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