238 citations · 859 across the 19 of their papers we have counts for
19 papers
Extinction towards the cluster R136 in the Large Magellanic Cloud: An extinction law from the near-infrared to the ultraviolet
Sarah A. Brands, Alex de Koter, Joachim M. Bestenlehner +4
The cluster R136 in the giant star-forming region 30 Doradus in the Large Magellanic Cloud (LMC) offers a unique opportunity to resolve a stellar population in a starburst-like env…
Characteristics of Kepler Eclipsing Binaries Displaying a Significant O'Connell Effect
Matthew F. Knote, Saida M. Caballero-Nieves, Vayujeet Gokhale +2
The O'Connell effect - the presence of unequal maxima in eclipsing binaries - remains an unsolved riddle in the study of close binary systems. The Kepler space telescope produced h…
The R136 star cluster dissected with Hubble Space Telescope/STIS. III. The most massive stars and their clumped winds
Sarah A. Brands, Alex de Koter, Joachim M. Bestenlehner +17
Context: The star cluster R136 inside the LMC hosts a rich population of massive stars, including the most massive stars known. The strong stellar winds of these very luminous star…
Probing the low-mass end of the companion mass function for O-type stars
M. Reggiani, A. Rainot, H. Sana +6
Almost all massive stars are part of a binary system. Given the wide range of separations at which these companions are found, several observational techniques have been adopted to…
The R136 star cluster dissected with Hubble Space Telescope/STIS. II. Physical properties of the most massive stars in R136
Joachim M. Bestenlehner, Paul A. Crowther, Saida M. Caballero-Nieves +11
We present an optical analysis of 55 members of R136, the central cluster in the Tarantula Nebula of the Large Magellanic Cloud. Our sample was observed with STIS aboard the Hubble…
A High Angular Resolution Survey of Massive Stars in Cygnus OB2: Adaptive Optics Results from the Gemini Near-InfraRed Imager
S. M. Caballero-Nieves, D. R. Gies, E. K. Baines +8
We present results of a high angular resolution survey of massive OB stars in the Cygnus OB2 association that we conducted with the NIRI camera and ALTAIR adaptive optics system of…
The Carina High-Contrast Imaging Project for massive Stars (CHIPS) I. Methodology and proof of concept on QZ Car ( HD93206)
A. Rainot, M. Reggiani, H. Sana +13
Massive stars like company. However, low-mass companions have remained extremely difficult to detect at angular separations () smaller than 1" (~1000-3000 au considering typical…
Variable Star Classification Using Multi-View Metric Learning
K. B. Johnston, S. M. Caballero-Nieves, V. Petit +2
Our multi-view metric learning framework enables robust characterization of star categories by directly learning to discriminate in a multi-faceted feature space, thus, eliminating…
A Detection Metric Designed for O'Connell Effect Eclipsing Binaries
Kyle B. Johnston, Rana Haber, Saida M. Caballero-Nieves +3
We present the construction of a novel time-domain signature extraction methodology and the development of a supporting supervised pattern detection algorithm. We focus on the targ…
Massive and Evolved Stars with the ngVLA
Thomas J. Maccarone, Saida Caballero-Nieves, Nathan Smith +1
The Next Generation Very Large Array will have excellent sensitivity for detecting the thermal emission from massive stars and from red giants. This will allow direct imaging of th…
Massive, wide binaries as tracers of massive star formation
Daniel W. Griffiths, Simon P. Goodwin, Saida M. Caballero-Nieves
Massive stars can be found in wide (hundreds to thousands AU) binaries with other massive stars. We use -body simulations to show that any bound cluster should always have appro…
The Tarantula Nebula as a template for extragalactic star forming regions from VLT/MUSE and HST/STIS
P A Crowther, S M Caballero-Nieves, N Castro +1
We present VLT/MUSE observations of NGC 2070, the dominant ionizing nebula of 30 Doradus in the LMC, plus HST/STIS spectroscopy of its central star cluster R136. Integral Field Spe…
The R136 star cluster dissected with Hubble Space Telescope/STIS. I. Far-ultraviolet spectroscopic census and the origin of HeII 1640 in young star clusters
Paul A. Crowther, S. M. Caballero-Nieves, K. A. Bostroem +17
We introduce a HST/STIS stellar census of R136a, the central ionizing star cluster of 30 Doradus. We present low resolution far-ultraviolet STIS/MAMA spectroscopy of R136 using 17…
The Multiplicity of Massive Stars: A High Angular Resolution Survey with the HST Fine Guidance Sensor
E. J. Aldoretta, S. M. Caballero-Nieves, D. R. Gies +11
We present the results of an all-sky survey made with the Fine Guidance Sensor on Hubble Space Telescope to search for angularly resolved binary systems among the massive stars. Th…
A High Angular Resolution Survey of Massive Stars in Cygnus OB2: Results from the Hubble Space Telescope Fine Guidance Sensors
Saida M. Caballero-Nieves, Edmund P. Nelan, Douglas R. Gies +8
We present results of a high angular resolution survey of massive OB stars in the Cygnus OB2 association that we conducted with the Fine Guidance Sensor 1R (FGS1r) on the Hubble Sp…
ASAS Light Curves of Intermediate Mass Eclipsing Binaries and the Parameters of HI Mon
S. J. Williams, D. R. Gies, J. W. Helsel +2
We present a catalog of 56 candidate intermediate mass eclipsing binary systems extracted from the 3rd data release of the All Sky Automated Survey. We gather pertinent observation…
The Ultraviolet Spectrum and Physical Properties of the Mass Donor Star in HD 226868 = Cygnus X-1
S. M. Caballero-Nieves, D. R. Gies, C. T. Bolton +8
We present an examination of high resolution, ultraviolet spectroscopy from Hubble Space Telescope of the photospheric spectrum of the O-supergiant in the massive X-ray binary HD 2…
Stellar Wind Variations During the X-ray High and Low States of Cygnus X-1
D. R. Gies, C. T. Bolton, R. M. Blake +10
We present results from Hubble Space Telescope UV spectroscopy of the massive X-ray binary system, HD226868 = Cyg X-1. The spectra were obtained at both orbital conjunction phases…
Joint H-alpha and X-Ray Observations of Massive X-Ray Binaries. II. The Be X-ray Binary and Microquasar LS I +61 303
E. D. Grundstrom, S. M. Caballero-Nieves, D. R. Gies +6
We present the results of an H-alpha monitoring campaign on the BeXRB and microquasar system LS I +61 303. We use radial velocity measurements of HeI lines in our spectra to re-eva…