101 citations · 832 across the 34 of their papers we have counts for
34 papers
Updated Planetary Mass Constraints of the Young V1298 Tau System Using MAROON-X
James Sikora, Jason Rowe, Saugata Barat +14
The early K-type T-Tauri star, V1298 Tau (, ) hosts four transiting planets with radii ranging from . The thre…
Refining the Masses and Radii of the Star Kepler-33 and its Five Transiting Planets
James Sikora, Jason Rowe, Daniel Jontof-Hutter +1
Kepler-33 hosts five validated transiting planets ranging in period from 5 to 41 days. The planets are in nearly co-planar orbits and exhibit remarkably similar (appropriately scal…
Analysis of eight magnetic chemically peculiar stars with rotational modulation
O. Kobzar, V. Khalack, D. Bohlender +9
Since the end of 2018, the Transiting Exoplanet Survey Satellite (TESS) has provided stellar photometry to the astronomical community. We have used TESS data to study rotational mo…
Discovery of eight 'Main-sequence Radio Pulse emitters' using the GMRT: clues to the onset of coherent radio emission in hot magnetic stars
Barnali Das, Poonam Chandra, Matt E. Shultz +6
'Main-sequence radio pulse-emitters' (MRPs) are magnetic early-type stars from which periodic radio pulses, produced via electron cyclotron maser emission (ECME), are observed. Des…
TESS Cycle 1 observations of roAp stars with 2-min cadence data
D. L. Holdsworth, M. S. Cunha, D. W. Kurtz +41
We present the results of a systematic search for new rapidly oscillating Ap (roAp) stars using the 2-min cadence data collected by the Transiting Exoplanet Survey Satellite (TESS)…
Eri: A bright pulsating magnetic Bp star in a 5.95-day double-lined spectroscopic binary
K. Woodcock, G. A. Wade, O. Kochukhov +2
Eri is a Bp star that was previously reported to be a single-lined spectroscopic binary. Using 17 ESPaDOnS spectropolarimetric (Stokes ) observations we identified the w…
MOBSTER -- V: Discovery of a magnetic companion star to the magnetic Cep pulsator HD 156424
M. E. Shultz, Th. Rivinius, G. A. Wade +5
HD 156424 (B2 V) is a little-studied magnetic hot star in the Sco OB4 association, previously noted to display both high-frequency radial velocity (RV) variability and magnetospher…
The Magnetic Early B-type Stars IV: Breakout or Leakage? H emission as a diagnostic of plasma transport in centrifugal magnetospheres
M. E. Shultz, S. Owocki, Th. Rivinius +15
Rapidly rotating early-type stars with strong magnetic fields frequently show H emission originating in Centrifugal Magnetospheres (CMs), circumstellar structures in which centr…
A spectroscopic test of the rotational modulation origin of periodic \emph{Kepler} photometric variability of A-type stars
James Sikora, Gregg Wade, Jason Rowe
High-precision space-based photometry obtained by the \emph{Kepler} and \emph{TESS} missions has revealed evidence of rotational modulation associated with main sequence (MS) A and…
Spectropolarimetric follow-up of 8 rapidly rotating, X-ray bright FK Comae candidates
James Sikora, Jason Rowe, Steve Howell +2
Our understanding of the evolved, rapidly rotating, magnetically active, and apparently single FK Comae stars is significantly hindered by their extreme rarity: only two stars in a…
MOBSTER -- IV. Detection of a new magnetic B-type star from follow-up spectropolarimetric observations of photometrically selected candidates
A. David-Uraz, M. E. Shultz, V. Petit +8
In this paper, we present results from the spectropolarimetric follow-up of photometrically selected candidate magnetic B stars from the MOBSTER project. Out of four observed targe…
Study of slowly rotating CP stars observed with TESS
O. Kobzar, V. Khalack, D. Bohlender +10
Since the end of 2018, the Transiting Exoplanet Survey Satellite (TESS) provides high-quality space data on stellar photometry to the astronomical community. We present the results…
Probing the magnetospheres of hot magnetic stars using ECME
Barnali Das, Poonam Chandra, Gregg A. Wade +2
We discuss Electron Cyclotron Maser Emission (ECME), observed in the form of highly circularly polarized pulses, from a few hot magnetic stars. This emission is one of the manifest…
Evolving pulsation of the slowly rotating magnetic Cep star CMa
G. A. Wade, A. Pigulski, S. Begy +11
Recent BRITE-Constellation space photometry of the slowly rotating, magnetic Cep pulsator CMa permits a new analysis of its pulsation properties. Analysis of the two-colo…
MOBSTER: Establishing a Picture of Magnetic Massive Stars as a Population
Alexandre David-Uraz, Coralie Neiner, James Sikora +12
Magnetic massive and intermediate-mass stars constitute a separate population whose properties are still not fully understood. Increasing the sample of known objects of this type w…
Magnetic OB[A] Stars with TESS: probing their Evolutionary and Rotational properties -- The MOBSTER Collaboration
A. David-Uraz, C. Neiner, J. Sikora +14
In this contribution, we present the MOBSTER Collaboration, a large community effort to leverage high-precision photometry from the Transiting Exoplanet Survey Satellite (\textit{T…
No evidence of a sudden change of spectral appearance or magnetic field strength of the O9.7V star HD 54879
G. A. Wade, S. Bagnulo, Z. Keszthelyi +8
It was recently claimed that the magnetic O-type star HD 54879 exhibits important radial velocity variability indicative of its presence in a spectroscopic binary. More remarkably,…
Rotational and pulsational variability in the TESS light curve of HD27463
V. Khalack, C. Lovekin, D. M. Bowman +8
The new photometric data on pulsating Ap star HD~27463 obtained recently with the Transiting Exoplanet Survey Satellite (\textit{TESS}) are analysed to search for variability. Our…
MOBSTER - II. Identification of rotationally variable A stars observed with \emph{TESS} in Sectors 1 to 4
J. Sikora, A. David-Uraz, S. Chowdhury +7
Recently, high-precision optical 2~min cadence light curves obtained with \emph{TESS} for targets located in the mission's defined first four sectors have been released. The majori…
Magnetic OB[A] Stars with TESS: probing their Evolutionary and Rotational properties (MOBSTER) - I. First-light observations of known magnetic B and A stars
A. David-Uraz, C. Neiner, J. Sikora +21
In this paper we introduce the MOBSTER collaboration and lay out its scientific goals. We present first results based on the analysis of nineteen previously known magnetic O, B and…
Diverse Variability of O and B Stars Revealed from 2-minute Cadence Light Curves in Sectors 1 and 2 of the TESS Mission: Selection of an Asteroseismic Sample
May G. Pedersen, Sowgata Chowdhury, Cole Johnston +18
Uncertainties in stellar structure and evolution theory are largest for stars undergoing core convection on the main sequence. A powerful way to calibrate the free parameters used…
A Volume Limited Survey of mCP Stars Within 100pc II: Rotational and Magnetic Properties
J. Sikora, G. A. Wade, J. Power +1
Various surveys focusing on the magnetic properties of intermediate-mass main sequence (MS) stars have been previously carried out. One particularly puzzling outcome of these surve…
A Volume-Limited Survey of mCP Stars Within 100pc I: Fundamental Parameters and Chemical Abundances
J. Sikora, G. A. Wade, J. Power +1
We present the first results of a volume-limited survey of main sequence (MS) magnetic chemically peculiar (mCP) stars. The sample consists of all identified intermediate-mass MS s…
The Magnetic Early B-type Stars I: Magnetometry and Rotation
M. E. Shultz, G. A. Wade, Th. Rivinius +7
The rotational and magnetic properties of many magnetic hot stars are poorly characterized, therefore the MiMeS and BinaMIcS collaborations have collected extensive high-dispersion…