2023ApJ...946...98C

Query : 2023ApJ...946...98C

2023ApJ...946...98C - Astrophys. J., 946, 98 (2023/April-1)

Disentangling Stellar and Airglow Emission Lines from Hubble Space Telescope (HST) Cosmic Origins Spectrograph (COS) Spectra.

CRUZ AGUIRRE F., YOUNGBLOOD A., FRANCE K. and BOURRIER V.

Abstract (from CDS):

H I Lyα (1215.67 Å) and the O I triplet (1302.17, 1304.86, and 1306.03 Å) are bright far-ultraviolet (FUV) emission lines that trace the stellar chromosphere. Observations of stellar Lyα and O I using the Hubble Space Telescope's (HST) most sensitive FUV spectrograph, the Cosmic Origins Spectrograph (COS), are contaminated with geocoronal emission, or airglow. This study demonstrates that airglow emission profiles as observed by COS are sufficiently stable to create airglow templates that can be reliably subtracted from the data, recovering the underlying stellar flux. We developed a graphical user interface to implement the airglow subtraction on a sample of 171 main-sequence F-, G-, K-, and M-type dwarfs from the COS data archive. Correlations between recovered stellar emission and measures of stellar activity were investigated. Several power-law relationships are presented for predicting the stellar Lyα and O I emission. The apparent brightness of the stellar emission relative to the airglow is a critical factor in the success or failure of an airglow subtraction. We developed a predictor for the success of an airglow subtraction using the signal-to-noise ratio of the nearby chromospheric emission line Si III (1206.51 Å). The minimum attenuated Lyα flux that was successfully recovered is 1.39 × 10–14 erg cm–2 s–1, and we recommend this as a minimum flux for COS Lyα recoveries.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Dwarf stars - Main sequence stars - Hubble Space Telescope - Ultraviolet spectroscopy - Stellar activity

VizieR on-line data: <Available at CDS (J/ApJ/946/98): tableb2.dat tableb4.dat refs.dat>

Simbad objects: 173

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Number of rows : 173
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 HD 1461 PM* 00 18 41.8676757921 -08 03 10.803829898   7.14 6.46     G3VFe0.5 413 1
2 * 9 Cet BY* 00 22 51.7884553555 -12 12 33.969921319 7.29 7.05 6.39     G2.5V 510 0
3 Smethells 165 ** 00 24 08.9692009536 -62 11 04.331547384   12.71 11.335 11.076 9.49 M0Ve 76 0
4 * 54 Psc PM* 00 39 21.8053928046 +21 15 01.712899720 7.29 6.71 5.88 5.21 4.82 K0.5V 630 1
5 2MASS J00393579-3816584 PM* 00 39 35.7990078240 -38 16 58.548770976           M1.4 32 0
6 HD 4113 PM* 00 43 12.5955916128 -37 58 57.477720936   8.61 7.88     G5V 118 1
7 HD 4208 PM* 00 44 26.6506707202 -26 30 56.455527913   8.46 7.79     G7VFe-1CH-0.5 224 1
8 G 268-38 PM* 00 44 59.3309137511 -15 16 17.542839990     14.150 13.801 11.19 M4.5V 197 0
9 HD 7924 * 01 21 59.1137270904 +76 42 37.038255120   8.018 7.167     K0.5V 169 1
10 HD 10180 * 01 37 53.5772394024 -60 30 41.482108548   7.95 7.32     G1V 218 2
11 * q01 Eri PM* 01 42 29.3145176952 -53 44 26.991453264   6.05 5.52     F9V 368 1
12 ASAS J015220-5950.4 PM* 01 52 18.2984524560 -59 50 16.769469588   14.01 12.54 12.19 10.253 M2.0Ve 44 1
13 1RXS J020013.6-084106 PM* 02 00 12.7785500088 -08 40 51.914829360   13.87 12.44 12.026 10.109 M2.5 40 0
14 HD 13445 PM* 02 10 25.9181700303 -50 49 25.465181208   6.945 6.117     K1.5V 484 1
15 UCAC4 156-001978 PM* 02 12 58.1891095440 -58 51 18.149846112   14.410 12.925 12.552   M2.0Ve 36 0
16 HD 13931 PM* 02 16 47.3787138792 +43 46 22.786242816       7.2   G0 115 1
17 EXO 0235.2-5216 PM* 02 36 51.7013280528 -52 03 03.600913140   13.59 12.411   9.727 M2Ve 77 0
18 CD-23 1056 PM* 02 46 42.8869269570 -23 05 11.802392748 12.911 11.651 10.237 9.36 8.544 K5V 78 1
19 GSC 08057-00342 SB* 02 54 33.1653392928 -51 08 31.396648128   13.73 12.21     M1.5Ve 32 0
20 G 75-55 PM* 02 58 20.0852347272 -00 59 33.436035960   12.52 10.977 10.550 8.87 M0.5 29 0
21 HD 20052 PM* 03 10 08.7345700848 -62 21 27.498144096   8.88 8.34     F8V 31 0
22 LP 247-13 TT* 03 15 37.8502113936 +37 24 14.246652060   14.36   12.823   M2.7V 54 0
23 HD 21166 SB* 03 18 57.7125676632 -73 59 10.444178724   7.631 7.236     F3V 46 0
24 CD-35 1167 PM* 03 19 08.6661869328 -35 07 00.303058092   12.27 11.12   9.517 K7Ve 44 0
25 * kap01 Cet BY* 03 19 21.6964175772 +03 22 12.714979884 5.71 5.52 4.85 4.27 3.91 G5V 948 0
26 BD+07 499 PM* 03 20 29.1950778120 +08 27 16.023452076   10.766   9.321   K4/5V 65 0
27 CD-44 1173 PM* 03 31 55.6413793968 -43 59 13.559704980   12.05 10.927 10.447 9.347 K6Ve 66 0
28 HD 22359 ** 03 32 43.7781622805 -60 34 27.355869916   9.32 9.26 8.61   F6V 35 0
29 * eps Eri BY* 03 32 55.8444911587 -09 27 29.739493865 5.19 4.61 3.73 3.00 2.54 K2V 2073 1
30 HD 23079 PM* 03 39 43.0959995592 -52 54 57.017412036   7.68 7.11     F9.5V 190 1
31 BD+16 502 PM* 03 43 52.5642780322 +16 40 19.303290141 12.614 11.355 9.900 8.995 8.101 K6V 86 0
32 HD 24293 PM* 03 48 01.1223629032 -64 50 11.693952829   8.50 7.85     G3V 60 0
33 HD 24636 PM* 03 48 11.4715618344 -74 41 38.819425776   7.513 7.127     F3IV/V 75 0
34 HD 25825 PM* 04 06 16.1277225936 +15 41 53.233746900   8.416 7.811 7.484 7.169 G0V 222 0
35 L 229-91 PM* 04 09 15.6683376139 -53 22 25.290024815 14.397 13.302 11.811 10.734 9.32 M3.5V 121 2
36 HG 7-162 PM* 04 18 47.0366907024 +13 21 58.712785092   13.40 11.981 11.51   M1V~ 61 0
37 HG 7-183 PM* 04 22 59.9096138016 +13 18 58.532598468   15.19 13.69 13.24   M1 35 0
38 HD 28471 PM* 04 25 09.1505362837 -64 04 48.251223739   8.56 7.91     G5V 103 0
39 HD 28701 PM* 04 25 45.8486750616 -69 59 37.265127612   8.48 7.87     G2V 99 0
40 HG 7-212 PM* 04 26 04.7061979464 +15 02 28.989485232   13.71 12.24 11.85   M1V 57 0
41 HD 28185 PM* 04 26 26.3227063776 -10 33 02.947149108   8.52 7.81     G6.5IV-V 210 1
42 HD 28481 PM* 04 26 38.9096553720 -53 42 15.232824000   8.74 8.30     F6V 20 0
43 HG 7-221 PM* 04 27 16.6396768704 +17 14 30.666346656   14.517 13.064 12.711   M1.5V 67 0
44 HD 29255 * 04 29 58.6468647648 -72 16 31.765987200   8.84 8.36     F6V 36 0
45 StKM 1-495 PM* 04 35 02.5510428710 +08 39 30.554529393   13.291 11.871 11.401   M1.0Ve 27 0
46 LP 415-1619 PM* 04 36 38.9458035168 +18 36 56.713956768   14.82 13.338 12.986   M2.0V 53 0
47 BD-11 916 PM* 04 37 41.8657785528 -11 02 19.972109364 13.041 11.838 10.331 9.327 8.137 M1V 171 0
48 HD 285968 PM* 04 42 55.7750207949 +18 57 29.395947044 12.668 11.49 9.951 8.931 7.702 M2.5V 391 2
49 PM J04453+1334 PM* 04 45 19.6101619944 +13 34 27.337189368     13.089 12.622   ~ 19 0
50 HD 30501 SB* 04 45 38.5783009064 -50 04 27.122415732 9.054 8.474 7.588 7.105 6.676 K2V 111 0
51 1RXS J044800.5-504119 PM* 04 48 00.6684491112 -50 41 25.694326860   12.96 11.678 11.125 9.782 K7Ve 43 0
52 PM J04510+1458 SB* 04 51 02.4287237736 +14 58 16.690716552     11.676 11.266   M0.5Ve 37 0
53 HD 32778 SB* 05 02 17.0376695709 -56 04 50.163527274 7.687 7.652 7.021 6.66 6.293 G7VFe-1.4CH-1.2 100 0
54 HD 34297 PM* 05 06 35.6971153349 -77 34 02.888949621   7.97 7.31     G8VFe-1.6CH-1.2 58 0
55 HD 33793 PM* 05 11 40.5898395497 -45 01 06.361734876 11.624 10.433 8.853 7.9 6.899 M1VIp 367 0
56 HD 36767 PM* 05 25 19.0334498659 -75 41 32.647350853   7.71 7.18     F9VFe-0.7CH+0 56 0
57 PM J05334-5117 PM* 05 33 25.5757939176 -51 17 13.177618764   12.89 11.720 11.292 10.004 K7Ve 44 0
58 HD 37124 PM* 05 37 02.4866159419 +20 43 50.832948117   8.35   7.2   G4IV-V 321 2
59 * pi. Men PM* 05 37 09.8868446714 -80 28 08.834553264   6.25 5.67     G0V 390 1
60 HD 38459 PM* 05 43 26.4567750528 -47 49 22.711279188   9.37 8.50     K1IV-V 75 0
61 HD 39194 PM* 05 44 31.9179600882 -70 08 36.857795874   8.841 8.075     K0V 147 1
62 HD 38529 PM* 05 46 34.9131388488 +01 10 05.502949860       5.4   G8III/IV 376 2
63 HD 39755 * 05 50 18.6774323016 -62 04 48.723943116   8.20 7.82     F2V 24 0
64 HD 40307 PM* 05 54 04.2405000288 -60 01 24.493007640 8.814 8.097 7.147 6.597 6.119 K2.5V 305 1
65 * chi01 Ori SB* 05 54 22.9829893 +20 16 34.222038 5.08 5.00 4.40 3.90 3.59 G0V 895 0
66 HD 41004 PM* 05 59 49.6501762752 -48 14 22.888358520   9.49 8.62     K1IV 221 1
67 HD 42286 SB* 06 06 03.5233647421 -59 32 35.537299250   9.31 8.47     K1V 67 0
68 HD 47252 PM* 06 31 56.7334739206 -68 42 35.510728187   9.06 8.27     K0.5V 59 0
69 HD 47186 PM* 06 36 08.7879310512 -27 37 20.268367464   8.36 7.63     G6V 165 1
70 HD 51608 PM* 06 54 51.3407691144 -55 15 33.581230956   8.947 8.17 7.94 8.65 K0IV-V 117 1
71 HD 51929 PM* 06 55 53.2199607424 -56 56 32.625629720   8.02 7.43     G2VFe-1.4CH-0.7 134 0
72 HD 266611 PM* 06 57 04.6921793352 +30 45 23.378755824   11.14   9.308   K5V 66 0
73 HD 53658 PM* 07 01 05.4443447904 -65 42 23.395323888   7.75 7.34     F6V 33 0
74 HD 55720 PM* 07 11 31.6674204568 -49 25 27.136633751   8.24 7.47     G8V 88 0
75 HD 56737 PM* 07 14 22.5035987088 -61 04 11.229422808   7.575 7.161     F3V 43 0
76 HD 62850 PM* 07 42 36.0621578664 -59 17 50.741322504   7.83 7.19     G3V 70 0
77 HD 63765 PM* 07 47 49.7198598818 -54 15 50.920919607   8.85 8.10     G9V 115 1
78 HD 64184 SB* 07 49 26.6486818945 -59 22 51.037406544   8.19 7.52     G3V 76 0
79 HD 65216 PM* 07 53 41.3195697504 -63 38 50.353461420   8.65 7.96     G5V 162 1
80 LP 424-4 PM* 07 59 05.8395356736 +15 23 29.236065000   13.5   11.934   M2.0V 172 1
81 HD 69830 PM* 08 18 23.9469682407 -12 37 55.817187530   6.74 5.95     G8:V 587 1
82 HD 70642 PM* 08 21 28.1368486179 -39 42 19.484303527   7.89 7.18     G6VCN+0.5 190 1
83 HD 73744 SB* 08 32 15.5780927328 -76 55 43.671694044   8.21 7.61     G5VFe-1.3CH-0.9 58 0
84 * pi.01 UMa BY* 08 39 11.7046112880 +65 01 15.263122512 6.33 6.26 5.64 5.12 4.79 G0.5V 608 0
85 * rho01 Cnc PM* 08 52 35.8111044043 +28 19 50.954994470 7.45 6.82   5.4   K0IV-V 1223 1
86 HD 79498 PM* 09 15 09.4020481584 +23 22 31.978671384       7.6   G5 80 1
87 HD 85512 PM* 09 51 07.0518026760 -43 30 10.023686079 9.963 8.83 7.651 6.934 6.319 K6Vk: 250 1
88 L 320-124 PM* 10 14 51.7786855411 -47 09 24.192778106     13.49 12.26 10.69 M3.5V 159 0
89 HD 90156 PM* 10 23 55.2740234040 -29 38 43.909986984 7.758 7.603 6.920 6.534 6.189 G5V 163 1
90 BD+57 1274 PM* 10 31 43.2241928136 +57 06 57.105620856   11.00   9.27   K5V 63 0
91 HD 92788 PM* 10 42 48.5278074048 -02 11 01.525313004   8.01 7.30     G6V 260 1
92 * 47 UMa PM* 10 59 27.9727514012 +40 25 48.920572724   5.66   4.7   G1-VFe-0.5 824 1
93 HD 97658 PM* 11 14 33.1612754184 +25 42 37.390358520 9.049 8.569 7.714 7.259 6.835 K1V 222 1
94 * 83 Leo B PM* 11 26 46.2783265113 +03 00 22.756723728 9.467 8.554 7.530 6.97 6.508 K3 226 1
95 K2-3 PM* 11 29 20.3917077216 -01 27 17.281697868   13.52 12.17 11.88   M1V 99 0
96 Ross 905 PM* 11 42 11.0933350978 +26 42 23.650782778   12.06 10.613 10.272 8.24 M3V 750 1
97 HD 102117 PM* 11 44 50.4608641248 -58 42 13.357947852   8.20 7.45     G6V 137 1
98 HD 103095 Pe* 11 52 58.7673387755 +37 43 07.254113125 7.38 7.20 6.45 5.80 5.35 K1V_Fe-1.5 842 1
99 HD 104067 PM* 11 59 10.0088449029 -20 21 13.612067116 9.683 8.897 7.921 7.369 6.913 K2V 149 1
100 BD+49 2126 PM* 12 15 08.8223193624 +48 43 57.214732692       10.058   K6V 72 0
101 HD 114783 PM* 13 12 43.7855575272 -02 15 54.130663296 9.137 8.469 7.550 7.053 6.627 K1V 214 1
102 HD 114729 PM* 13 12 44.2591958183 -31 52 24.055985573   7.31 6.69     G0V 222 1
103 HD 117618 PM* 13 32 25.5556238328 -47 16 16.913213976   7.77 7.17     G0V 144 1
104 BD+05 2767 PM* 13 34 21.5019384648 +04 40 02.641791324 12.601 11.34 9.927 9.048 8.213 K5V 82 0
105 HD 121504 PM* 13 57 17.2387351056 -56 02 24.159656364   8.12 7.52     G2V 190 1
106 G 124-27 PM* 14 21 15.1249203620 -01 07 19.809788605   14.834 12.95 13.02   dM4.0 50 0
107 HD 128311 BY* 14 36 00.5602765558 +09 44 47.454573266 9.232 8.441 7.446 6.895 6.425 K3V 338 1
108 V* EK Dra BY* 14 39 00.2104038120 +64 17 29.979649860   8.243 7.604     G5VFe-0.7CH-1(k) 500 0
109 HD 136118 PM* 15 18 55.4722661904 -01 35 32.592572196   7.46 6.94     F7V 141 1
110 BD-07 4003 BY* 15 19 26.8269387505 -07 43 20.189497466 13.403 11.76 10.560 9.461 8.911 M3V 717 2
111 HD 137826 PM* 15 24 04.9649774928 +66 33 14.140169208   9.41   8.3   G6V 47 0
112 HD 144061 PM* 15 58 21.0274554816 +70 53 39.982348068   7.903 7.280 8.00   G2V 77 0
113 * rho CrB PM* 16 01 02.6604891411 +33 18 12.639472357   6.01   5.0   G0+VaFe-1 686 1
114 HD 146044 PM* 16 10 47.2507913928 +59 40 31.467037980 9.040 8.810 8.130     G0 38 0
115 HD 147231 PM* 16 14 50.2493052600 +70 55 46.799173416   8.53   7.4   G5V 83 0
116 HD 146868 PM* 16 14 57.0761465475 +60 40 11.170469802   8.34 7.69 7.3   G4 49 0
117 * 18 Sco PM* 16 15 37.2702755653 -08 22 09.982125430   6.15 5.50     G2Va 671 0
118 HD 147018 PM* 16 23 00.1478804220 -61 41 19.559913914   9.07 8.30     G8/K0V 79 1
119 HD 150706 PM* 16 31 17.5830478008 +79 47 23.197555824   7.622 7.016     G0 234 1
120 HD 151541 PM* 16 42 38.5765856163 +68 06 07.791412449   8.32   7.1   K1 148 0
121 HD 154345 PM* 17 02 36.4038090379 +47 04 54.764174452   7.50   6.3   G9 297 1
122 HD 154956 PM* 17 05 47.5775749128 +53 45 03.410067636 8.710 8.750 8.290     F5 17 0
123 HD 155358 PM* 17 09 34.6176428924 +33 21 21.085565784       7.0   G0 175 1
124 HD 156389 ** 17 14 06.83039 +56 08 01.6384           F2 54 0
125 HD 156559 * 17 14 43.8163433616 +58 23 02.623748712   8.26 7.89     F2 33 0
126 G 139-21 PM* 17 15 18.9339850845 +04 57 50.066612336     14.71 13.26 11.50 M4.5V 372 1
127 BD+19 3268 ** 17 15 50.098752 +19 00 00.13608   11.858 10.370 9.864   M0.5V 45 0
128 HD 156668 PM* 17 17 40.4896074192 +29 13 38.018547948       7.8   K3V 98 1
129 HD 156384C PM* 17 18 58.8272997802 -34 59 48.612673382 12.96 11.79 10.22 10.05 8.82 M1.5V 249 1
130 HD 159329 PM* 17 29 44.4502379808 +63 51 09.555601788   8.19   7.3   F9V 54 0
131 HD 161897 PM* 17 41 06.7006941384 +72 25 13.242530836   8.33   7.1   K0 69 1
132 * mu. Ara PM* 17 44 08.7031414872 -51 50 02.591603160   5.85 5.15     G3IV-V 578 2
133 HD 164922 PM* 18 02 30.8623420470 +26 18 46.805024012   7.79   6.5   G9V 238 1
134 HD 165700 PM* 18 04 00.4642581984 +55 16 23.442076848   8.21 7.80     F8 33 0
135 HD 168093 * 18 15 20.0052109992 +50 58 16.542023304 8.210 8.190 7.660     F8 31 0
136 HD 172669 PM* 18 36 23.4527880600 +66 54 47.676863736   8.18 7.60     G3V 39 0
137 BD+61 1762 PM* 18 36 53.1538638288 +61 42 09.015131916       8.1   G5 43 1
138 HD 178911B PM* 19 09 03.0984258744 +34 35 59.474397804   8.71   7.3   G5 158 1
139 HD 180712 PM* 19 14 01.4607940848 +59 33 06.562648476   8.57 7.99     F8 38 0
140 BD+49 3025 ** 19 30 15.810576 +49 32 08.73132   10.67 9.82 9.61   K1V 33 0
141 HD 185239 * 19 34 51.8805663192 +57 46 21.455442624   8.57 8.16     F8 26 0
142 * 16 Cyg A ** 19 41 48.9534996168 +50 31 30.219536784 6.79 6.59 5.95 5.50 5.17 G1.5Vb 814 0
143 * 16 Cyg B PM* 19 41 51.9726777456 +50 31 03.089030916 7.07 6.86 6.20 5.76 5.42 G3V 949 1
144 HD 187876 PM* 19 49 12.1757566008 +57 24 33.598828836   8.32 7.76     G0 31 0
145 HD 187085 PM* 19 49 33.9666332064 -37 46 49.973441628   7.78 7.21     G0V 110 1
146 BD+47 2936 EB* 19 50 50.2472976936 +48 04 51.101390496       8.8   K4V 359 1
147 HD 189733 BY* 20 00 43.7129433648 +22 42 39.073143456 9.241 8.578 7.648 7.126 6.68 K2V 991 1
148 WASP-80 PM* 20 12 40.1693365800 -02 08 39.187438476   12.810 11.939 11.510 10.279 K7V-M0V 98 1
149 HD 192263 BY* 20 13 59.8455790536 -00 52 00.769626768 9.447 8.724 7.767 7.231 6.771 K1/2V 270 1
150 HD 192310 PM* 20 15 17.3913760474 -27 01 58.711625384   6.63 5.723 5.98 8.74 K2+V 359 1
151 HD 197037 PM* 20 39 32.9599353024 +42 14 54.778250868       6.61   G0 81 1
152 HD 199476 PM* 20 51 44.9430122960 +74 46 49.180344645 8.64 8.51 7.81 7.25 6.86 G8 120 0
153 LP 756-18 PM* 20 55 37.1152826965 -14 03 54.878638700   15.7 14.63 13.21 11.40 M4.5V 65 0
154 HD 199288 PM* 20 57 40.0687221764 -44 07 45.733001992   7.11 6.52     G2VFe-1.0 209 0
155 BD-05 5432 PM* 21 00 06.1968214728 -05 05 40.034944176   10.93 9.87     ~ 103 1
156 * 61 Cyg A BY* 21 06 53.9395895022 +38 44 57.902349973 7.50 6.39 5.21 4.19 3.54 K5V 1099 0
157 HD 201651 PM* 21 06 56.3883363168 +69 40 28.548436620   8.94 8.20     K0 53 0
158 HD 202123 PM* 21 08 40.6579303154 +73 41 48.518435462   9.52   8.1   K2 46 0
159 HD 204961 PM* 21 33 33.9751191976 -49 00 32.399427028 11.359 10.176 8.672 7.665 6.479 M1.5V 336 1
160 Smethells 86 PM* 21 44 30.1227174024 -60 58 38.894635668 14.163 13.00 11.628 10.715 9.815 M0Ve 86 0
161 2MASS J22025453-6440441 PM* 22 02 54.5035261800 -64 40 44.216843916   14.133 12.683     M1.8 33 0
162 HD 209458b Pl 22 03 10.7727465312 +18 53 03.549393384           ~ 2037 1
163 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1193 1
164 BD-05 5715 PM* 22 09 40.3443137051 -04 38 26.650757960 13.006 11.868 10.366 9.279 7.877 M3.5V 332 1
165 L 119-213 PM* 22 41 58.1171811377 -69 10 08.320741850   17.3 15.26 13.74 11.88 ~ 73 0
166 UCAC3 33-129092 PM* 22 46 34.7008784448 -73 53 50.424087408   14.90 13.42 13.09 10.96 M2.3 31 0
167 BD-15 6290 BY* 22 53 16.7325836486 -14 15 49.304052185 12.928 11.749 10.192 9.013 7.462 M3.5V 1106 1
168 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 1306 0
169 PM J23261-7323 PM* 23 26 10.6969614264 -73 23 49.853758488   14.08 11.877 11.492 9.951 M0Ve 58 0
170 ASAS J232857-6802.4 PM* 23 28 57.6376130976 -68 02 34.024508916   14.51 13.04 12.59 10.624 M2.5Ve 40 0
171 HD 222582 PM* 23 41 51.5300932008 -05 59 08.729137104   8.34 7.69     G5V 261 2
172 CD-40 15273 PM* 23 51 31.0839097560 -39 54 24.258188484   12.15 11.33 10.896 10.10 K4V 82 1
173 UCAC3 13-31217 PM* 23 58 56.6006937336 -83 39 42.533786880   13.31 11.93 11.55 10.18 K5.8 25 0

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