M dwarfs
More rapidly rotating PMS M dwarfs with light curves suggestive of orbiting clouds of material
... rotating M dwarfs in Upper Sco, more than 20% of the stars have scallop-shell light ...rotating M dwarfs in Upper Sco may be subject to this physical ...
16
An Activity-Rotation Relationship and Kinematic Analysis of Nearby Mid-to-Late-Type M Dwarfs
... late-type M dwarfs has been more ...type M dwarfs and that the angular momentum evolu- tion of all stars is more a function of stellar radius than it is interior ...late-type M ...
14
A path towards understanding the rotation activity relation of M dwarfs with K2 mission, X ray and UV data
... We study the relation between stellar rotation and magnetic activity for a sample of 134 bright, nearby M dwarfs observed in the Kepler Two-Wheel (K2) mission during campaigns C0–C4. The K2 light curves ...
21
Two small temperate planets transiting nearby M dwarfs in K2 campaigns 0 and 1
... transiting M dwarfs using data from K2, the 2 reaction wheel, ecliptic plane survey of NASA ’ s repurposed Kepler spacecraft ( Howell et ...K2 M Dwarf Program ( K2-MDP ) is a comprehensive approach ...
15
The EBLM Project : IV Spectroscopic orbits of over 100 eclipsing M dwarfs masquerading as transiting hot Jupiters
... We present 2271 radial velocity measurements taken on 118 single-line binary stars, taken over eight years with the CORALIE spectrograph. The binaries consist of F/G/K primaries and M-dwarf secondaries. They were ...
38
The CARMENES search for exoplanets around M dwarfs. First visual-channel radial-velocity measurements and orbital parameter updates of seven M-dwarf planetary systems
... We modeled all available literature and archive RVs together with our CARMENES precise Doppler data. In our analysis we used the individual RV data sets as they were, without removing outliers or binning RVs into one ...
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Periodic variability of spotted M dwarfs in WTS
... The periodic variability in M dwarfs can result from the modulation of brightness by cool star spots. For solar-type stars the − dynamo generated at the tachocline, the boundary between the convection and ...
5
The MUSCLES Treasury Survey IV : Scaling relations for ultraviolet, Ca II K, and energetic particle fluxes from M dwarfs
... the correlations with the least scatter are for Mg II and Ly α ( 0.27 and 0.18 dex, respectively ) , both optically thick lines with formation temperatures similar to Ca II K. Ca II has been previously found to ...
27
The MUSCLES Treasury Survey II Intrinsic Lyα and extreme ultraviolet spectra of K and M dwarfs with exoplanets
... K dwarfs to Wood et al. ’ s ( 2005 ) K dwarfs does not signi fi cantly change the Ly α– rotation period ...) M-dwarf sample ( four stars ) has rotation period measurements, and the addition of the ...
18
The lower main sequence and the atmospheres of M dwarfs
... Similarly, the weak line However, for strong lines pressure broadening counteracts these trends in cooler and denser atmospheres, reversing the gravity dependence at about the main seque[r] ...
236
A Jupiter-like planet orbiting the nearby M dwarf GJ 832
... for M dwarfs is problematic, and that even the Bonfils et ...which M dwarf ex- oplanets could be formed in such a manner as to not display the strong metallicity correlation seen in F, G, and K ...
5
CARMENES: Blue planets orbiting red dwarfs
... around M dwarfs benefit from a larger signal, and a shorter orbital period of planets in the habitable zone ...with M-star hosts is still low compared with solar ...only M-type stars of ...
9
Radial velocity planet detection biases at the stellar rotational period
... Detecting small amplitude planetary signals and disentangling them from stellar activity becomes more difficult when the orbital period of the planet is close to that of the stellar activity. Recently, this has been ...
9
Realistic limitations of detecting planets around young active stars
... K dwarfs, Doppler Images of M dwarfs show uniform spot coverage, with spots at low and high latitudes, and without a polar ...K dwarfs TiO band analysis indicates a much higher spot coverage ...
6
Photospheric studies of M dwarf stars
... This thesis dissertation is devoted to the study of the photospheres of M dwarfs, aiming at investigating the photospheric structures and global atmospheric properties of M dwarfs in the[r] ...
196
Stellar companions to the exoplanet host stars HD 2638 and HD 164509
... main sequence stars ( M dwarfs ) . Note that both our mass determination ( Table 3 ) and projected separation ( Table 2 ) for the HD 2638 stellar companion match well with the results obtained by Roberts ...
7
The size and shape of the Milky Way disc and halo from M-type brown dwarfs in the BoRG survey
... of dwarfs from the Hubble Ultra Deep Field (Beckwith et ...of M-dwarfs from the Great Observatories Origins Deep Survey fields (Giavalisco et ...and M-dwarfs to several dozen objects. ...
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THE RHETORIC OF REFUGEES: LITERACY, NARRATIVE AND IDENTITY FOR SOMALI WOMEN
... Spectroscopic observations were made for 48 out of the 58 CAESAR stars. In addition, we observed 12 other stars (AU Mic, G 169-029, GJ 281, GJ 393, GJ 745B, GJ 873, GJ 867BD, GJ 905, GJ 1245B, LHS 1610AB, LHS 1805, LHS ...
260
Atmospheres of brown dwarfs
... Brown dwarfs become increasingly dimmer as they age because their mass is too small to sustain continuous hydrogen ...brown dwarfs fuse some helium and maybe ...brown dwarfs comprises members that ...
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Brown dwarfs in wide-field surveys
... The next step consists of applying the same procedure to the remaining regions targeted by the GCS, including Taurus, Orion, Praesepe, Hyades, IC 4665, Alpha Per, Per-OB2, and Coma Ber. The advent of VISTA (Visible and ...
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