Design and development of NIRSPEC: a near-infrared echelle spectrograph for the Keck II telescope

Author(s):  
Ian S. McLean ◽  
Eric E. Becklin ◽  
Oddvar Bendiksen ◽  
George Brims ◽  
John Canfield ◽  
...  
2007 ◽  
Vol 59 (2) ◽  
pp. 387-395 ◽  
Author(s):  
Tomoyasu Yamamuro ◽  
Hironobu Kawabata ◽  
Ko Nedachi ◽  
Yuichiro Nishimaki ◽  
Kentaro Motohara ◽  
...  

1996 ◽  
Vol 6 (2) ◽  
pp. 69-75 ◽  
Author(s):  
Maryam I. Daneshvar ◽  
Guillermo A. Casay ◽  
Gabor Patonay ◽  
Malgorzata Lipowska ◽  
Lucjan Strekowski ◽  
...  

1995 ◽  
Author(s):  
Ian S. McLean ◽  
Eric E. Becklin ◽  
Donald F. Figer ◽  
Samuel B. Larson ◽  
W. Timothy Liu ◽  
...  

2021 ◽  
Vol 162 (6) ◽  
pp. 295
Author(s):  
Bryson L. Cale ◽  
Michael Reefe ◽  
Peter Plavchan ◽  
Angelle Tanner ◽  
Eric Gaidos ◽  
...  

Abstract We present updated radial-velocity (RV) analyses of the AU Mic system. AU Mic is a young (22 Myr) early-M dwarf known to host two transiting planets—P b ∼ 8.46 days, R b = 4.38 − 0.18 + 0.18 R ⊕ , P c ∼ 18.86 days, R c = 3.51 − 0.16 + 0.16 R ⊕ . With visible RVs from Calar Alto high-Resolution search for M dwarfs with Exo-earths with Near-infrared and optical echelle Spectrographs (CARMENES)-VIS, CHIRON, HARPS, HIRES, Minerva-Australis, and Tillinghast Reflector Echelle Spectrograph, as well as near-infrared (NIR) RVs from CARMENES-NIR, CSHELL, IRD, iSHELL, NIRSPEC, and SPIRou, we provide a 5σ upper limit to the mass of AU Mic c of M c ≤ 20.13 M ⊕ and present a refined mass of AU Mic b of M b = 20.12 − 1.57 + 1.72 M ⊕ . Used in our analyses is a new RV modeling toolkit to exploit the wavelength dependence of stellar activity present in our RVs via wavelength-dependent Gaussian processes. By obtaining near-simultaneous visible and near-infrared RVs, we also compute the temporal evolution of RV “color” and introduce a regressional method to aid in isolating Keplerian from stellar activity signals when modeling RVs in future works. Using a multiwavelength Gaussian process model, we demonstrate the ability to recover injected planets at 5σ significance with semi-amplitudes down to ≈10 m s−1 with a known ephemeris, more than an order of magnitude below the stellar activity amplitude. However, we find that the accuracy of the recovered semi-amplitudes is ∼50% for such signals with our model.


2012 ◽  
Vol 52 (4) ◽  
pp. 1175-1179 ◽  
Author(s):  
Ryosuke Kojima ◽  
Hideo Takakura ◽  
Takeaki Ozawa ◽  
Yukio Tada ◽  
Tetsuo Nagano ◽  
...  

2003 ◽  
Author(s):  
Dario Lorenzetti ◽  
Fausto Cortecchia ◽  
Francesco D'Alessio ◽  
Agostino Fiorani ◽  
Gianluca Li Causi ◽  
...  

2015 ◽  
Author(s):  
John W. Zeller ◽  
Caitlin Rouse ◽  
Harry Efstathiadis ◽  
Pradeep Haldar ◽  
Nibir K. Dhar ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document