2022AJ....163..184L

Query : 2022AJ....163..184L

2022AJ....163..184L - Astron. J., 163, 184-184 (2022/April-0)

Observing the Sun as a Star: Design and Early Results from the NEID Solar Feed.

LIN A.S.J., MONSON A., MAHADEVAN S., NINAN J.P., HALVERSON S., NITROY C., BENDER C.F., LOGSDON S.E., KANODIA S., TERRIEN R.C., ROY A., LUHN J.K., GUPTA A.F., FORD E.B., HEARTY F., LAHER R.R., HUNTING E., McBRIDE W.R., SALAZAR RIVERA N.I., RAJAGOPAL J., WOLF M.J., ROBERTSON P., WRIGHT J.T., BLAKE C.H., CANAS C.I., LUBAR E., McELWAIN M.W., RAMSEY L.W., SCHWAB C. and STEFANSSON G.

Abstract (from CDS):

Efforts with extreme-precision radial velocity (EPRV) instruments to detect small-amplitude planets are largely limited, on many timescales, by the effects of stellar variability and instrumental systematics. One avenue for investigating these effects is the use of small solar telescopes which direct disk-integrated sunlight to these EPRV instruments, observing the Sun at high cadence over months or years. We have designed and built a solar feed system to carry out "Sun-as-a-star" observations with NEID, a very high precision Doppler spectrometer recently commissioned at the WIYN 3.5 m Telescope at Kitt Peak National Observatory. The NEID solar feed has been taking observations nearly every day since 2020 December; data is publicly available at the NASA Exoplanet Science Institute NEID Solar Archive: https://neid.ipac.caltech.edu/search_solar.php. In this paper, we present the design of the NEID solar feed and explanations behind our design intent. We also present early radial velocity (RV) results which demonstrate NEID's RV stability on the Sun over 4 months of commissioning: 0.66 m s–1 rms under good sky conditions and improving to 0.41 m s–1 rms under best conditions.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanets - Radial velocity - Solar telescopes - Solar activity

Simbad objects: 1

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Number of rows : 1
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 CoRoT-7 * 06 43 49.4690164104 -01 03 46.826642700   12.78 11.73 11.36 10.87 K0V 232 1

Query : 2022AJ....163..184L

Basic data :
CoRoT-7 -- Star
Other object types: otypes_help 		* (2021A&A,TYC,...), NIR (DENIS,2MASS), Ro* (2012MNRAS)
ICRS coord. (ep=J2000) : 		06 43 49.4690164104 -01 03 46.826642700 (Optical) [ 0.0127 0.0119 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		06 41 16.8851957728 -01 00 41.850770376 [ 0.0127 0.0119 90 ]
Gal coord. (ep=J2000) : 		213.0104006110684 -02.1785732616463 [ 0.0127 0.0119 90 ]
Proper motions mas/yr : 		10.984 -0.040 [0.017 0.015 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 31.110 [0.0013] / z(spectroscopic) 0.000104 [0.000000] / cz 31.11 [0.00]
   (Opt) A 2018A&A...616A...7S
Parallaxes (mas): 		6.2676 [0.0139] A 2020yCat.1350....0G
Spectral type: 		K0V C 2011A&A...529A.136E
Fluxes (8) :
B 12.78 [0.27] D 2000A&A...355L..27H
V 11.73 [0.15] D 2000A&A...355L..27H
R 11.36 [~] E 2003yCat.1289....0Z
G 11.519906 [0.002767] C 2020yCat.1350....0G
I 10.87 [0.03] C 2005yCat.2263....0D
J 10.301 [0.024] C 2003yCat.2246....0C
H 9.880 [0.022] C 2003yCat.2246....0C
K 9.806 [0.021] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 3 		Display criteria :

Identifiers (17) :
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TYC 4799-1733-1 GALAH 131216001601073 SPOCS 2675 Gaia DR3 3107267177757848576
AP J06434947-0103468 GES J06434945-0103469 TIC 280304863 Gaia DR2 3107267177757848576
CoRoT-7 GSC 04799-01733 UCAC2 31290682
CoRoT 102708694 2MASS J06434947-0103468 USNO-A2.0 0825-03049717
DENIS J064349.4-010346 RAVE J064349.5-010347 Gaia DR1 3107267173455384192

References (232 between 1850 and 2026) (Total 232)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 11    Diameter : 1    Distance : 3    Var : 1    Rot : 10    Fe/H : 26    Plx : 4    PM : 2    SpT : 1   

   

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TYC 4799-1733-1 AP J06434947-0103468 CoRoT 102708694 DENIS J064349.4-010346 GALAH 131216001601073
GSC 04799-01733 2MASS J06434947-0103468 RAVE J064349.5-010347 UCAC2 31290682 USNO-A2.0 0825-03049717
Gaia DR1 3107267173455384192 Gaia DR3 3107267177757848576 Gaia DR2 3107267177757848576

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