Understanding B-type Supergiants in the Low Metallicity Environment of the SMC

Abstract

Spectroscopic analyses of 7 SMC B-type supergiants and 1 giant have been undertaken using high resolution optical data obtained on the VLT with UVES. FASTWIND, a non-LTE, spherical,line-blanketed model atmosphere code was used to derive atmospheric and wind parameters of these stars as well as their absolute abundances. The implications of these results for stellar evolution and line driven wind theory are discussed.

arXiv comment19 pages, 6 tables, 10 figures, accepted for publication in Astronomy and Astrophysics (5/12/2003)

References in corpus (29)

• Mass-loss predictions for O and B stars as a function of metallicity
• Presupernova Evolution of Rotating Massive Stars II: -- Evolution of the Surface Properties
• The Ultraviolet Spectrum of MS 1512-cB58: An Insight into Lyman Break Galaxies
• Stellar evolution with rotation VII: Low metallicity models and the blue to red supergiant ratio in the SMC
• A UBVR CCD Survey of the Magellanic Clouds
• Quantitative Spectroscopy of O Stars at Low Metallicity. O Dwarfs in NGC 346
• Ten eclipsing binaries in the Small Magellanic Cloud: fundamental parameters and SMC distance
• Formation of contact in massive close binaries
• Revised Stellar Temperatures for Magellanic Cloud O Supergiants from FUSE and VLT-UVES Spectroscopy
• A-type Supergiant Abundances in the SMC: Probes of Evolution
• On the effective temperature scale of O stars
• Fundamental parameters of Galactic luminous OB stars VI. Temperatures, masses and WLR of Cyg OB2 supergiants
• First Stellar Abundances in NGC 6822 from VLT-UVES and Keck-HIRES Spectroscopy
• Ultraviolet Line Spectra of Metal-Poor Star-Forming Galaxies
• Quantitative studies of the Far-UV, UV and optical spectra of late O and early B-type supergiants in the Magellanic Clouds
• Constraints on the Ionization Balance of Hot-Star Winds from FUSE Observations of O Stars in the Large Magellanic Cloud
• Chemical composition of B-type supergiants in the OB8, OB10, OB48, OB78 associations of M31
• The Chemical Composition of Two Supergiants in the Dwarf Irregular Galaxy WLM
• Analysis of Four A-F Supergiants in M31 from Keck HIRES Spectroscopy
• B stars as a diagnostic of star-formation at low and high redshift
• The blue to red supergiant ratio in young clusters at various metallicities
• Large-scale wind structures in OB supergiants: a search for rotationally modulated Hαvariability
• Chemical abundances and winds of massive stars in M31: a B-type supergiant and a WC star in OB10
• Stellar spectroscopy far beyond the Local Group
• More nitrogen rich B-type stars in the SMC cluster, NGC 330
• Quantitative spectral analysis of early B-type supergiants in the Sculptor galaxy NGC 300
• Terminal velocities of luminous, early-type SMC stars
• Differential O and Si Abundances in M33 Early B Supergiants
• Discovery and quantitative spectral analysis of an Ofpe/WN9 (WN11) star in the Sculptor spiral galaxy NGC 300

Cited by in corpus (85)

• Mass loss from hot massive stars
• Atmospheric NLTE-Models for the Spectroscopic Analysis of Blue Stars with Winds. II. Line-Blanketed Models
• Physical Parameters and Wind Properties of Galactic Early B Supergiants
• The empirical metallicity dependence of the mass-loss rate of O- and early B-type stars
• The VLT-FLAMES survey of massive stars: constraints on stellar evolution from the chemical compositions of rapidly rotating Galactic and Magellanic Cloud B-type stars
• The VLT-FLAMES Survey of Massive Stars: Observations centered on the Magellanic Cloud clusters NGC 330, NGC 346, NGC 2004, and the N11 region
• The VLT-FLAMES survey of massive stars: Evolution of surface N abundances and effective temperature scales in the Galaxy and Magellanic Clouds
• The VLT-FLAMES survey of massive stars: Surface chemical compositions of B-type stars in the Magellanic Clouds
• The VLT-FLAMES Survey of Massive Stars: Observations in the Galactic Clusters NGC 3293, NGC 4755 and NGC 6611
• Bright OB stars in the Galaxy IV. Stellar and wind parameters of early to late B supergiants
• The VLT-FLAMES survey of massive stars: Mass loss and rotation of early-type stars in the SMC
• The VLT-FLAMES Tarantula Survey - XI. A census of the hot luminous stars and their feedback in 30 Doradus
• Quantitative studies of the optical and UV spectra of Galactic early B supergiants I. Fundamental parameters
• Spectral analysis of early-type stars using a genetic algorithm based fitting method
• Abundance analysis of prime B-type targets for asteroseismology I. Nitrogen excess in slowly-rotating beta Cephei stars
• The VLT-FLAMES Survey of Massive Stars: Stellar parameters and rotational velocities in NGC3293, NGC4755 and NGC6611
• Statistical properties of a sample of periodically variable B-type supergiants - Evidence for opacity-driven gravity-mode oscillations
• Nitrogen enrichment, boron depletion and magnetic fields in slowly-rotating B-type dwarfs
• Fundamental Properties of O-Type Stars
• Testing massive star evolution, star-formation history and feedback at low metallicity : Spectroscopic analysis of OB stars in the SMC Wing
• Understanding B-type supergiants in the low metallicity environment of the SMC II
• VLT spectroscopy of blue supergiants in IC 1613
• Quantitative studies of the Far-UV, UV and optical spectra of late O and early B-type supergiants in the Magellanic Clouds
• Metallicity-dependent wind parameter predictions for OB stars
• B-type Supergiants in the SMC: Chemical compositions and comparison of static and unified models
• The chemical composition of the Orion star forming region: I. Homogeneity of O and Si abundances in B-type stars
• Fundamental parameters of B Supergiants from the BCD System
• The Araucaria Project. VLT spectra of blue supergiants in WLM: classification and first abundances
• The VLT-FLAMES Tarantula Survey XXIV. Stellar properties of the O-type giants and supergiants in 30 Doradus
• Mid-infrared spectroscopy of carbon stars in the Small Magellanic Cloud
• The VLT-FLAMES Tarantula Survey XIX. B-type Supergiants - Atmospheric parameters and nitrogen abundances to investigate the role of binarity and the width of the main sequence
• Kinematics of massive stars in the Small Magellanic Cloud
• The ARAUCARIA project: Grid-Based Quantitative Spectroscopic Study of Massive Blue Stars in NGC55
• Models for Massive Stellar Populations with Rotation
• Two bi-stability jumps in theoretical wind models for massive stars and the implications for Luminous Blue Variable supernovae
• The ARAUCARIA Project: VLT-FORS spectroscopy of blue supergiants in NGC 3109 - Classifications, first abundances and kinematics
• Winds of low-metallicity OB-type stars: HST-COS spectroscopy in IC1613
• Interstellar Gas-phase Element Depletions in the Small Magellanic Cloud: A Guide to Correcting for Dust in QSO Absorption Line Systems
• X-Shooting ULLYSES: massive stars at low metallicity. I. Project Description
• B-type supergiants in the SMC: Rotational velocities and implications for evolutionary models
• Chemical evolution of high-mass stars in close binaries. II. The evolved component of the eclipsing binary V380 Cygni
• Chemical compositions of Four B-type Supergiants in the SMC Wing
• Fast & slow winds from supergiants and Luminous Blue Variables
• Terminal velocities of luminous, early-type SMC stars
• The excess of cool supergiants from contemporary stellar evolution models defies the metallicity-independent Humphreys-Davidson limit
• Atmospheric parameters and rotational velocities for a sample of Galactic B-type supergiants
• Supernova 1987A: 3D Mixing and light curves for explosion models based on binary-merger progenitors
• X-Shooting ULLYSES: Massive stars at low metallicity. III. Terminal wind speeds of ULLYSES massive stars
• The Araucaria Project: VLT-spectroscopy of blue massive stars in NGC 55
• Testing the predicted mass-loss bi-stability jump at radio wavelengths
• Chemical composition of Galactic OB stars II. The fast rotator Z Oph
• New mass-loss rates of B supergiants from global wind models
• A dearth of young and bright massive stars in the Small Magellanic Cloud
• Ground-based observations of the beta Cephei CoRoT main target HD 180642: abundance analysis and mode identification
• X-ray, UV and optical analysis of supergiants: $\epsilon$ Ori
• On the H$\alpha$ Behaviour of Blue Supergiants: Rise and Fall over the Bi-stability Jump
• The blue supergiant Sher 25 and its intriguing hourglass nebula
• Thermal Pressures in the Interstellar Medium of the Magellanic Clouds
• A non-LTE analysis of the spectra of two narrow lined main sequence stars in the SMC
• The effects of surface fossil magnetic fields on massive star evolution: IV. Grids of models at Solar, LMC, and SMC metallicities
• OB stars at the lowest Local Group metallicity: GTC-OSIRIS observations of Sextans A
• Quantitative spectroscopy of B-type supergiants
• Central stars of planetary nebulae in the Galactic bulge
• The ultraviolet and optical spectra of luminous B-type stars in the Small Magellanic Cloud
• Astrophysical parameters of the peculiar X-ray transient IGR J11215-5952
• X-Shooting ULLYSES: Massive Stars at low metallicity IX: Empirical constraints on mass-loss rates and clumping parameters for OB supergiants in the Large Magellanic Cloud
• Spectroscopic and photometric oscillatory envelope variability during the S Doradus outburst of the Luminous Blue Variable R71
• Single-Star HII Regions as a Probe of Massive Star Spectral Energy Distributions
• Atmospheric NLTE-Models for the Spectroscopic Analysis of Blue Stars with Winds. III. X-ray emission from wind-embedded shocks
• A Be star with a low nitrogen abundance in the SMC cluster NGC330
• The iron abundance of the Magellanic Bridge
• Carbon line formation and spectroscopy in O-type stars
• Iron abundances from optical Fe III absorption lines in B-type stellar spectra
• Binarity at LOw Metallicity (BLOeM): Multiplicity of early B-type supergiants in the Small Magellanic Cloud
• X-Shooting ULLYSES: Massive Stars at Low Metallicity: XI. Pipeline-determined Physical Properties of Magellanic Cloud OB Stars
• The drastic impact of Eddington-limit induced mass ejections on massive star populations
• Weighing stars from birth to death: mass determination methods across the HRD
• Optically-thick Structure in Early B Type Supergiant Stellar Winds at Low Metallicities
• Binarity at LOw Metallicity (BLOeM): Projected rotational velocities
• A non-LTE abundance analysis of the post-AGB star ROA 5701
• X-Shooting ULLYSES: Massive stars at low metallicity. XIII. Putting the bi-stability jump to the test in the LMC
• On the importance of the wind emission to the optical continuum of OB supergiants
• Metal-poor single Wolf-Rayet stars: The interplay of optically thick winds and rotation
• X-Shooting ULLYSES: Massive stars at low metallicity XV. On the metallicity dependence of B-supergiant mass-loss rates
• UV Spectroscopy of Metal-Poor Massive Stars in the Small Magellanic Cloud