activity
20082022
most citedPlacing the spotted T Tauri star LkCa 4 on an HR diagram

138 citations · 657 across the 24 of their papers we have counts for

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Showing 2018Show all

9 papers · 1 filter

astro-ph.SR2018

Preliminary Trigonometric Parallaxes of 184 Late-T and Y Dwarfs and an Analysis of the Field Substellar Mass Function into the "Planetary" Mass Regime

J. Davy Kirkpatrick, Emily C. Martin, Richard L. Smart +16

We present preliminary trigonometric parallaxes of 184 late-T and Y dwarfs using observations from Spitzer (143), USNO (18), NTT (14), and UKIRT (9). To complete the 20-pc census o…

astro-ph.SR2018

Probing Late-type T dwarf J-H Color Outliers for Signs of Age

Sarah E. Logsdon, Gregory N. Mace, Ian S. McLean +1

We present the results of a Keck/NIRSPEC follow-up survey of thirteen late-type T dwarfs (T6-T9), twelve of which have unusually red or blue J-H colors. Previous work suggests that…

astro-ph.SR2018

IGRINS Spectral Library

Sunkyung Park, Jeong-Eun Lee, Wonseok Kang +12

We present a library of high-resolution (R / 45,000) and high signal-to-noise ratio (S/N 200) near-infrared spectra for stars of a wide range of spe…

astro-ph.SR2018

Chemical Compositions of Evolved Stars From Near-Infrared IGRINS High-Resolution Spectra. I. Abundances in Three Red Horizontal Branch Stars

Melike Afşar, Christopher Sneden, Michael P. Wood +6

We have derived elemental abundances of three field red horizontal branch stars using high-resolution (R 45,000), high signal-to-noise ratio (S/N 200) and

astro-ph.EP2018

Multi-band high resolution spectroscopy rules out the hot Jupiter BD+20 1790b - First data from the GIARPS Commissioning

I. Carleo, S. Benatti, A. F. Lanza +51

Context. Stellar activity is currently challenging the detection of young planets via the radial velocity (RV) technique. Aims. We attempt to definitively discriminate the nature o…

astro-ph.SR2018

Magnetic Inflation and Stellar Mass II: On the Radii of Single, Rapidly Rotating, Fully Convective M Dwarf Stars

Aurora Y. Kesseli, Philip S. Muirhead, Andrew W. Mann +1

Main sequence, fully-convective M dwarfs in eclipsing binaries are observed to be larger than stellar evolutionary models predict by as much as . A proposed explanation fo…