Discovery of a low-mass companion to the F7V star HD 984
نویسندگان
چکیده
منابع مشابه
A High-Eccentricity Low-Mass Companion to HD 89744.
HD 89744 is an F7 V star with a mass of 1.4 M middle dot in circle, an effective temperature of 6166 K, an age of 2.0 Gyr, and metallicity &sqbl0;Fe&solm0;H&sqbr0;=0.18. The radial velocity of the star has been monitored with the Advanced Fiber-Optic Echelle spectrograph at the Whipple Observatory since 1996, and evidence has been found for a low-mass companion. The data were complemented by ad...
متن کاملDiscovery of a Tight Brown Dwarf Companion to the Low Mass Star LHS 2397a
Using the adaptive optics system, Hokupa’a, at Gemini-North, we have directly imaged a companion around the UKIRT faint standard M8 star, LHS 2397a (FS 129) at a separation of 2.96 AU. Near-Infrared photometry of the companion has shown it to be an L7.5 brown dwarf and confirmed the spectral type of the primary to be M8. We also derive a substellar mass of the companion of 0.068M⊙, although mas...
متن کاملDiscovery of a Low-mass Companion to the Solar-type Star
Brown dwarfs and low-mass stellar companions are interesting objects to study since they occupy the mass region between deuterium and hydrogen burning. We report here the serendipitous discovery of a low-mass companion in an eccentric orbit around a solar-type main-sequence star. The stellar primary, TYC 2534-698-1, is a G2V star that was monitored both spectroscopically and photometrically ove...
متن کاملDiscovery of a Wide Substellar Companion to a Nearby Low-Mass Star
We report the discovery of a wide (135± 25 AU), unusually blue L5 companion 2MASS J17114559+4028578 to the nearby M4.5 dwarf G 203-50 as a result of a targeted search for common proper motion pairs in the Sloan Digital Sky Survey and the Two Micron All Sky Survey. Adaptive Optics imaging with Subaru indicates that neither component is a nearly equal mass binary with separation > 0.18, and place...
متن کاملDiscovery of a close companion to the young star
We report lunar occultation (LO) and speckle interferometry observations of Haro 6-37, all carried out at λ=2.2μm. The main finding is the discovery of a new close companion by LO, subsequently confirmed by speckle. The two techniques yield values in excellent agreement, with 0. ′′331 and 181◦ for the separation and position angle respectively. Additionally, the LO data show evidence of what mi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2015
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stv1732