2023RNAAS...7..212W

Query : 2023RNAAS...7..212W

2023RNAAS...7..212W - Research Notes of the AAS, 7, 212 (2023/October-0)

Direct Measurements of Stellar Masses with the Habitable World Observatory.

WRIGHT J.T., MAMAJEK E. and HUSTON M.

Abstract (from CDS):

Background stars within ∼1″ of a nearby massive object will have their centroids shift by about 1 mas due to microlensing. This provides mass measurements of stellar mass objects in the solar neighborhood. Habitable Worlds Observatory (HWO) targets toward the Galactic Bulge will have a sufficient density of background stars that HWO will be able to measure their masses independently of stellar evolutionary models, which will allow more accurate habitable histories of their exoplanets to be evaluated. This opportunity is maximized for designs of HWO with very high contrasts (Δmag ≳25) and the capability for precise relative astrometry with respect to the target star. HWO can apply this technique to any nearby stellar mass object in the direction of the Galactic Bulge, enhancing its science case and that of precursor missions like Roman.

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

Journal keyword(s): Stellar masses - Astrometric microlensing effect - Gravitational microlensing - Microlensing optical depth - Coronagraphic imaging

Simbad objects: 19

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Number of rows : 19
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 V* Y Vel Mi* 09 29 01.4160069360 -52 10 54.055500240     8.00 10.20   M9 53 0
2 HD 114837 PM* 13 14 15.1447379904 -59 06 11.654027964 5.35 5.41 4.93 4.48 8.83 F6VFe-0.4 147 0
3 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 1092 2
4 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1352 1
5 * nu.02 Lup PM* 15 21 48.1499105161 -48 19 03.469906910 6.35 6.30 5.65     G2-V 354 1
6 HD 147513 PM* 16 24 01.2911377368 -39 11 34.729913940 6.17 6.02 5.376     G5V 389 1
7 * 37 Oph * 17 12 27.8042900160 +10 35 06.560483892 8.640 6.940 5.340     M2III 47 0
8 * 41 Ara PM* 17 19 03.8375517433 -46 38 10.440417011 6.66 6.28 5.48 4.76 4.30 G9V 215 0
9 * ksi Oph PM* 17 21 00.3745211364 -21 06 46.571010951   4.752 4.387     F2V 151 0
10 * lam Ara PM* 17 40 23.8255785576 -49 24 56.099256516   5.17 4.77     F4V 132 0
11 * 58 Oph PM* 17 43 25.7935382141 -21 40 59.498912759   5.313 4.861     F5V 160 0
12 HD 165185 PM* 18 06 23.7195191736 -36 01 11.230597272 6.64 6.57 5.95 5.58   G1V 192 0
13 * 17 Cyg PM* 19 46 25.6000487071 +33 43 39.353533637   5.46   4.7   F5.5IV-V 290 0
14 * omi Aql PM* 19 51 01.6436960928 +10 24 56.592457524   5.66   4.8   F8V 481 0
15 * bet Aql PM* 19 55 18.7928429719 +06 24 24.351242346 5.040 4.560 3.710 3.05 2.56 G8IV 578 0
16 HD 190360 PM* 20 03 37.4050868074 +29 53 48.492435887   6.44   5.2   G7IV-V 490 1
17 * 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
18 * 61 Cyg B PM* 21 06 55.2638444466 +38 44 31.358519864 8.63 7.40 6.03 4.86 3.55 K7V 765 0
19 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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