Show simple item record

Files in this item


Item metadata

dc.contributor.authorZhao, Lily L.
dc.contributor.authorDumusque, Xavier
dc.contributor.authorFord, Eric B.
dc.contributor.authorLlama, Joe
dc.contributor.authorMortier, Annelies
dc.contributor.authorBedell, Megan
dc.contributor.authorAl Moulla, Khaled
dc.contributor.authorBender, Chad F.
dc.contributor.authorBlake, Cullen H.
dc.contributor.authorBrewer, John M.
dc.contributor.authorCollier Cameron, Andrew
dc.contributor.authorCosentino, Rosario
dc.contributor.authorFigueira, Pedro
dc.contributor.authorFischer, Debra A.
dc.contributor.authorGhedina, Adriano
dc.contributor.authorGonzalez, Manuel
dc.contributor.authorHalverson, Samuel
dc.contributor.authorKanodia, Shubham
dc.contributor.authorLatham, David W.
dc.contributor.authorLin, Andrea S. J.
dc.contributor.authorLo Curto, Gaspare
dc.contributor.authorLodi, Marcello
dc.contributor.authorLogsdon, Sarah E.
dc.contributor.authorLovis, Christophe
dc.contributor.authorMahadevan, Suvrath
dc.contributor.authorMonson, Andrew
dc.contributor.authorNinan, Joe P.
dc.contributor.authorPepe, Francesco
dc.contributor.authorRoettenbacher, Rachael M.
dc.contributor.authorRoy, Arpita
dc.contributor.authorSantos, Nuno C.
dc.contributor.authorSchwab, Christian
dc.contributor.authorStefánsson, Guđmundur
dc.contributor.authorSzymkowiak, Andrew E.
dc.contributor.authorTerrien, Ryan C.
dc.contributor.authorUdry, Stephane
dc.contributor.authorWeiss, Sam A.
dc.contributor.authorWildi, François
dc.contributor.authorWildi, Thibault
dc.contributor.authorWright, Jason T.
dc.identifier.citationZhao , L L , Dumusque , X , Ford , E B , Llama , J , Mortier , A , Bedell , M , Al Moulla , K , Bender , C F , Blake , C H , Brewer , J M , Collier Cameron , A , Cosentino , R , Figueira , P , Fischer , D A , Ghedina , A , Gonzalez , M , Halverson , S , Kanodia , S , Latham , D W , Lin , A S J , Lo Curto , G , Lodi , M , Logsdon , S E , Lovis , C , Mahadevan , S , Monson , A , Ninan , J P , Pepe , F , Roettenbacher , R M , Roy , A , Santos , N C , Schwab , C , Stefánsson , G , Szymkowiak , A E , Terrien , R C , Udry , S , Weiss , S A , Wildi , F , Wildi , T & Wright , J T 2023 , ' The Extreme Stellar-signals Project. III. Combining solar data from HARPS, HARPS-N, EXPRES, and NEID ' , Astronomical Journal , vol. 166 , no. 4 , 173 .
dc.identifier.otherJisc: 1364207
dc.identifier.otherpublisher-id: ajacf83e
dc.identifier.othermanuscript: acf83e
dc.identifier.otherother: aas46964
dc.identifier.otherORCID: /0000-0002-8863-7828/work/143336302
dc.description.abstractWe present an analysis of Sun-as-a-star observations from four different high-resolution, stabilized spectrographs—HARPS, HARPS-N, EXPRES, and NEID. With simultaneous observations of the Sun from four different instruments, we are able to gain insight into the radial velocity precision and accuracy delivered by each of these instruments and isolate instrumental systematics that differ from true astrophysical signals. With solar observations, we can completely characterize the expected Doppler shift contributed by orbiting Solar System bodies and remove them. This results in a data set with measured velocity variations that purely trace flows on the solar surface. Direct comparisons of the radial velocities measured by each instrument show remarkable agreement with residual intraday scatter of only 15–30 cm s−1. This shows that current ultra-stabilized instruments have broken through to a new level of measurement precision that reveals stellar variability with high fidelity and detail. We end by discussing how radial velocities from different instruments can be combined to provide powerful leverage for testing techniques to mitigate stellar signals.
dc.relation.ispartofAstronomical Journalen
dc.subjectRadial velocityen
dc.subjectAstronomical instrumentationen
dc.subjectExoplanet detection methodsen
dc.subjectStellar activityen
dc.subjectSolar activityen
dc.titleThe Extreme Stellar-signals Project. III. Combining solar data from HARPS, HARPS-N, EXPRES, and NEIDen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. St Andrews Centre for Exoplanet Scienceen
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record