J/AJ/161/130 List of 100 targets for the NEID Earth Twin Survey (Gupta+, 2021)
Target prioritization and observing strategies for the NEID Earth Twin Survey.
Gupta A.F., Wright J.T., Robertson P., Halverson S., Luhn J., Roy A.,
Mahadevan S., Ford E.B., Bender C.F., Blake C.H., Hearty F., Kanodia S.,
Logsdon S.E., McElwain M.W., Monson A., Ninan J.P., Schwab C.,
Stefansson G., Terrien R.C.
<Astron. J., 161, 130 (2021)>
=2021AJ....161..130G 2021AJ....161..130G
ADC_Keywords: Surveys; Exoplanets; Stars, dwarfs; Optical;
Effective temperatures
Keywords: Exoplanets ; Radial velocity ; Exoplanet detection methods ;
Stellar properties ; Surveys
Abstract:
NEID is a high-resolution optical spectrograph on the WIYN 3.5m
telescope at Kitt Peak National Observatory and will soon join the new
generation of extreme precision radial velocity instruments in
operation around the world. We plan to use the instrument to conduct
the NEID Earth Twin Survey (NETS) over the course of the next 5 years,
collecting hundreds of observations of some of the nearest and
brightest stars in an effort to probe the regime of Earth-mass
exoplanets. Even if we take advantage of the extreme instrumental
precision conferred by NEID, it will be difficult to disentangle the
weak (∼10cm/s) signals induced by such low-mass, long-period
exoplanets from stellar noise for all but the quietest host stars. In
this work, we present a set of quantitative selection metrics which we
use to identify an initial NETS target list consisting of stars
conducive to the detection of exoplanets in the regime of interest. We
also outline a set of observing strategies with which we aim to
mitigate uncertainty contributions from intrinsic stellar variability
and other sources of noise.
Description:
NEID, a high-resolution (R∼110000) optical spectrograph (380-930nm)
recently installed on the WIYN 3.5m telescope at Kitt Peak National
Observatory (KPNO), was built as part of the NASA-NSF Exoplanet
Observational Research (NN-EXPLORE) initiative with the purpose of
providing mass constraints for transiting exoplanet candidates down to
the size of Earth.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 54 100 Candidates for the NEID Earth Twin Survey
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See also:
J/other/Sci/330.653 : Detected planets in the Eta-Earth Survey (Howard+, 2010)
J/ApJ/757/112 : Stellar diameters. II. K and M-stars (Boyajian+, 2012)
J/ApJ/804/64 : Empirical and model parameters of 183 M dwarfs (Mann+, 2015)
J/A+A/584/A72 : Transiting rocky planet at 6.5pc from the Sun (Motalebi+, 2015)
J/ApJS/225/32 : Extended abundance analysis of cool stars (Brewer+, 2016)
J/AJ/153/208 : LCES HIRES/Keck radial velocity Exoplanet Survey (Butler+,2017)
J/A+A/597/A52 : K and G dwarfs stellar granulation variability (Meunier+, 2017)
J/AJ/158/109 : Occurrence rates of planets orbiting FGK stars (Hsu+, 2019)
J/ApJ/874/107 : HARPS-N solar radial velocities and activity (Milbourne+, 2019)
J/A+A/639/A35 : RV jitter and photometric var. correlation (Hojjatpanah+, 2020)
J/AJ/159/235 : Radial Velocity jitters in ∼600 planet host stars (Luhn+, 2020)
J/A+A/639/A77 : Proxima Cen RV, FWHM and fluxes (Suarez Mascareno+, 2020)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq [1/100] Sequential number (rank)
5- 13 A9 --- Name Star identification
15- 18 F4.2 mag Vmag [3.46/8.07] V-band magnitude
20- 23 I4 K Teff [3464/6128] Effective temperature
25- 28 F4.2 [cm/s2] logg [4.02/4.89] Surface gravity
30- 33 F4.2 --- Delta [0.55/6.54] Discovery space metric (Δ) (1)
35- 38 I4 s Texp [180/2032] Exposure time
40- 44 F5.2 m/s rms [1.11/14.66] Root mean square
46- 48 I3 --- Nobs [13/272] Number of observations
50- 54 F5.3 --- FOM [3.86/4.732] Figure of merit (2)
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Note (1): See section 4.1 of the article.
Note (2): See section 4.4 of the article.
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History:
From electronic version of the journal
(End) Prepared by Coralie Fix [CDS], 11-May-2021