Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Luhn, Jacob K."'
Autor:
Gupta, Arvind F., Luhn, Jacob K., Wright, Jason T., Mahadevan, Suvrath, Robertson, Paul, Krolikowski, Daniel M., Ford, Eric B., Cañas, Caleb I., Halverson, Samuel, Lin, Andrea S. J., Kanodia, Shubham, Fitzmaurice, Evan, Gilbertson, Christian, Bender, Chad F., Blake, Cullen H., Dong, Jiayin, Giovinazzi, Mark R., Logsdon, Sarah E., Monson, Andrew, Ninan, Joe P., Rajagopal, Jayadev, Roy, Arpita, Schwab, Christian, Stefánsson, Guðmundur
With close to three years of observations in hand, the NEID Earth Twin Survey (NETS) is starting to unearth new astrophysical signals for a curated sample of bright, radial velocity (RV)-quiet stars. We present the discovery of the first NETS exoplan
Externí odkaz:
http://arxiv.org/abs/2409.12315
Autor:
Gilbertson, Christian, Ford, Eric B., Halverson, Samuel, Fitzmaurice, Evan, Blake, Cullen H., Stefánsson, Guðmundur, Mahadevan, Suvrath, Wright, Jason T., Luhn, Jacob K., Ninan, Joe P., Robertson, Paul, Roy, Arpita, Schwab, Christian, Terrien, Ryan C.
A significant barrier to achieving the radial velocity (RV) measurement accuracy and precision required to characterize terrestrial mass exoplanets is the existence of time-variable features in the measured spectra, from both telluric absorption and
Externí odkaz:
http://arxiv.org/abs/2408.17289
Autor:
Ford, Eric B., Bender, Chad F., Blake, Cullen H., Gupta, Arvind F., Kanodia, Shubham, Lin, Andrea S. J., Logsdon, Sarah E., Luhn, Jacob K., Mahadevan, Suvrath, Palumbo III, Michael L., Terrien, Ryan C., Wright, Jason T., Zhao, Jinglin, Halverson, Samuel, Hunting, Emily, Robertson, Paul, Roy, Arpita, Stefansson, Gudmundur
We present the results of Sun-as-a-star observations by the NEID Solar Telescope at WIYN Observatory, spanning January 1, 2021 through June 30, 2024. We identify 117,060 observations which are unlikely to be significantly affected by weather, hardwar
Externí odkaz:
http://arxiv.org/abs/2408.13318
Autor:
Siegel, Jared C., Halverson, Samuel, Luhn, Jacob K., Zhao, Lily L., Moulla, Khaled Al, Robertson, Paul, Bender, Chad F., Terrien, Ryan C., Roy, Arpita, Mahadevan, Suvrath, Hearty, Fred, Ninan, Joe P., Wright, Jason T., Ford, Eric B., Schwab, Christian, Stefánsson, Guðmundur, Blake, Cullen H., McElwain, Michael W.
For solar-type stars, spots and their associated magnetic regions induce radial velocity perturbations through the Doppler rotation signal and the suppression of convective blueshift -- collectively known as rotation-modulation. We developed the Rota
Externí odkaz:
http://arxiv.org/abs/2408.07121
Autor:
Gupta, Arvind F., Luhn, Jacob K., Wright, Jason T., Mahadevan, Suvrath, Ford, Eric B., Stefansson, Gudmundur, Bender, Chad F., Blake, Cullen H., Halverson, Samuel, Hearty, Fred R., Kanodia, Shubham, Logsdon, Sarah E., McElwain, Michael W., Ninan, Joe P., Robertson, Paul, Roy, Arpita, Schwab, Christian, Terrien, Ryan C.
We report the results of observations of p-mode oscillations in the G0 subgiant star HD 35833 in both radial velocities and photometry with NEID and TESS, respectively. We achieve separate, robust detections of the oscillation signal with both instru
Externí odkaz:
http://arxiv.org/abs/2210.00544
HD 166620 was recently identified as a Maunder Minimum candidate based on nearly 50 years of Ca II H & K activity data from Mount Wilson and Keck-HIRES (Baum et al. 2022). These data showed clear cyclic behavior on a 17-year timescale during the Moun
Externí odkaz:
http://arxiv.org/abs/2207.00612
Autor:
Luhn, Jacob K., Ford, Eric B., Guo, Zhao, Gilbertson, Christian, Newman, Patrick, Plavchan, Peter, Burt, Jennifer A., Teske, Johanna, Gupta, Arvind F.
Characterizing the masses and orbits of near-Earth-mass planets is crucial for interpreting observations from future direct imaging missions (e.g., HabEx, LUVOIR). Therefore, the Exoplanet Science Strategy report (National Academies of Sciences, Engi
Externí odkaz:
http://arxiv.org/abs/2204.12512
Publikováno v:
The Astronomical Journal, 163, 183 (2022)
We present five decades of chromospheric activity measurements in 59 Sun-like stars as time series. These include and extend the 35 yr of stellar chromospheric activity observations by the Mount Wilson Survey (1966--2001), and continued observations
Externí odkaz:
http://arxiv.org/abs/2203.13376
Modeling Stellar Oscillations and Granulation in Radial Velocity Time Series: A Fourier-based Method
Autor:
Guo, Zhao, Ford, Eric B., Stello, Dennis, Luhn, Jacob K., Mahadevan, Suvrath, Gupta, Arvind F., Yu, Jie
Tens of thousands of solar-like oscillating stars have been observed by space missions. Their photometric variability in the Fourier domain can be parameterized by a sum of two super-Lorentizian functions for granulation and a Gaussian-shaped power e
Externí odkaz:
http://arxiv.org/abs/2202.06094
Autor:
Lin, Andrea S. J., Monson, Andrew, Mahadevan, Suvrath, Ninan, Joe P., Halverson, Samuel, Nitroy, Colin, Bender, Chad F., Logsdon, Sarah E., Kanodia, Shubham, Terrien, Ryan C., Roy, Arpita, Luhn, Jacob K., Gupta, Arvind F., Ford, Eric B., Hearty, Fred, Laher, Russ R., Hunting, Emily, McBride, William R., Rivera, Noah Isaac Salazar, Rajagopal, Jayadev, Wolf, Marsha J., Robertson, Paul, Wright, Jason T., Blake, Cullen H., Canas, Caleb I., Lubar, Emily, McElwain, Michael W., Ramsey, Lawrence W., Schwab, Christian, Stefansson, Gudmundur
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 effect
Externí odkaz:
http://arxiv.org/abs/2112.05711