... properties of radial pulsations in models of R Coronae Borealis (R CrB) stars have been investigated by using a ... 163346 Bibcode: 1985ApJ...295...38S Keywords: B Stars; R Coronae Borealis Stars; Stellar Models; Stellar Oscillations; Supergiant Stars; Variable ...
Tópico(s): Astrophysics and Star Formation Studies
1985 - IOP Publishing | The Astrophysical Journal
Geoffrey C. Clayton, K. S. Bjorkman, K. H. Nordsieck, N. E. B. Zellner, R. E. Schulte‐Ladbeck,
... is not known. We report spectropolarimetry of R Coronae Borealis (R CrB) itself, obtained in a deep decline with the Wisconsin-Indiana-Yale-NOAO telescope. The continuum is ...
Tópico(s): Astronomy and Astrophysical Research
1997 - IOP Publishing | The Astrophysical Journal
Edward Montiel, Geoffrey C. Clayton, Dominic Marcello, Felix J. Lockman,
... declines in brightness. Several RCB stars, including R Coronae Borealis (R CrB), itself, have large extended dust shells seen in the far-infrared. The origin of these shells is uncertain but they ...
Tópico(s): Gamma-ray bursts and supernovae
2015 - Institute of Physics | The Astronomical Journal
D. A. García–Hernández, N. Kameswara Rao, David L. Lambert, Kimmo Eriksson, Arumalla B. S. Reddy, T. Masseron,
... DY Persei exhibits fadings similar to those of R Coronae Borealis (RCB) variables. Photometric surveys of the Galaxy and ...
Tópico(s): Astronomy and Astrophysical Research
2023 - IOP Publishing | The Astrophysical Journal
Geoffrey C. Clayton, Ben Sugerman, S. A. Stanford, B. A. Whitney, J. Honor, B. Babler, M. J. Barlow, Karl D. Gordon, Jennifer E. Andrews, T. R. Geballe, Howard E. Bond, Orsola De Marco, W. A. Lawson, B. Sibthorpe, G. Olofsson, E. T. Polehampton, H. L. Gomez, M. Matsuura, Peter Hargrave, R. J. Ivison, R. Wesson, S. J. Leeks, B. M. Swinyard, T. Lim,
In 2007, R Coronae Borealis (R CrB) went into an historically deep and long decline. In this state, the dust acts like a natural coronagraph ...
Tópico(s): Astro and Planetary Science
2011 - IOP Publishing | The Astrophysical Journal
... deficient, carbon-rich giant phase like the R Coronae Borealis (R CrB) stars. These models use opacities from OPAL ...
Tópico(s): Astronomy and Astrophysical Research
2019 - IOP Publishing | The Astrophysical Journal
M. Asplund, B. Gustafsson, David L. Lambert, N. Kameswara Rao,
... H-deficient and He- and C-rich R Coronae Borealis (R CrB) stars has been under- taken to examine ...
Tópico(s): High-pressure geophysics and materials
2000 - EDP Sciences | Astronomy and Astrophysics
... partial agreement with the observed abundances of R Coronae Borealis (R CrB) and extreme He stars. Such stars might ...
Tópico(s): Pulsars and Gravitational Waves Research
2012 - Oxford University Press | Monthly Notices of the Royal Astronomical Society Letters
... Export Citation NASA/ADS The Problem of U Coronae Borealis, RS Vulpeculae, and TV Cassiopeiae. Sahade, J. ; Struve, O. ...
Tópico(s): Astronomical Observations and Instrumentation
1945 - IOP Publishing | The Astrophysical Journal
... of the discovery of the variability of R Coronae Borealis. The R Coronae Borealis (RCB) stars are distinguished from other hydrogen-deficient ...
Tópico(s): Astronomy and Astrophysical Research
1996 - Institute of Physics | Publications of the Astronomical Society of the Pacific
Produção Nacional
Revisado por pares
I. C. Leão, P. de Laverny, O. Chesneau, D. Mékarnia, J. R. De Medeiros,
Context.R Coronae Borealis (R CrB) variable stars are suspected to sporadically eject optically thick dust clouds causing, when one of them lies ...
Tópico(s): Adaptive optics and wavefront sensing
2007 - EDP Sciences | Astronomy and Astrophysics
... CVs), subdwarf O-type (sdO) stars and R Coronae Borealis (R CrB) stars. The birth rates of SNe Ia ...
Tópico(s): Astro and Planetary Science
1998 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
P. L. Cottrell, D. L. Lambert,
... P. L. ; Lambert, D. L. Abstract The R Coronae Borealis stars R CrB and XX Cam are examined using extensive ... 1982ApJ...261..595C Keywords: Abundance; Cosmochemistry; Nuclear Fusion; R Coronae Borealis Stars; Stellar Mass Ejection; Variable Stars; Spectral Line ...
Tópico(s): Gamma-ray bursts and supernovae
1982 - IOP Publishing | The Astrophysical Journal
Viraj Karambelkar, M. M. Kasliwal, P. Tisserand, Shreya Anand, M. C. B. Ashley, Lars Bildsten, Geoffrey C. Clayton, Courtney C. Crawford, Kishalay De, Nicholas Earley, M. Hankins, Xander Hall, A. Lamberts, Ryan M. Lau, Dan McKenna, Anna Moore, E. O. Ofek, Roger M. Smith, Roberto Soria, Jamie Soon, Tony Travouillon,
... results from a systematic infrared (IR) census of R Coronae Borealis (RCB) stars in the Milky Way, using data ...
Tópico(s): Gamma-ray bursts and supernovae
2024 - Institute of Physics | Publications of the Astronomical Society of the Pacific
... Metrics Export Citation NASA/ADS Type I supernovae, R Coronae Borealis stars, and the Crab Nebula. Wheeler, J. C. ... the best known subclass of which are the R Coronae Borealis variables; hence these stars may be SN I ... in the Galaxy. Paczynski's (1971) suggestion that R Coronae Borealis stars are mixed, completely hydrogen-depleted stars of ... 1978ApJ...225..212W Keywords: Carbon Stars; Crab Nebula; R Coronae Borealis Stars; Supergiant Stars; Supernovae; Variable Stars; Abundance; Elliptical Galaxies; Red Giant Stars; Stellar Evolution; Stellar Mass; Astrophysics; Crab Nebula; R CrB Stars:Supernovae full text sources ADS | data ...
Tópico(s): Astronomy and Astrophysical Research
1978 - IOP Publishing | The Astrophysical Journal
... of mass and luminosity for two pulsating R Coronae Borealis stars, R CrB and RY Sgr, have bounds set by ... 1983ApJ...272L..25S Keywords: Mass To Light Ratios; R Coronae Borealis Stars; Stellar Evolution; Stellar Luminosity; Stellar Mass; Variable ...
Tópico(s): Solar and Space Plasma Dynamics
1983 - IOP Publishing | The Astrophysical Journal
C. Alcock, R. A. Allsman, D. R. Alves, T. S. Axelrod, A. C. Becker, D. P. Bennett, Geoffrey C. Clayton, K. H. Cook, K. C. Freeman, K. Griest, J. Guern, D. Kilkenny, M. J. Lehner, S. L. Marshall, B. A. Peterson, M. R. Pratt, Peter J. Quinn, A. W. Rodgers, C. W. Stubbs, W. Sutherland, D. L. Welch,
... Large Magellanic Cloud Variable Star Inventory. IV. New R Coronae Borealis Stars Alcock, C. ; Allsman, R. A. ; Alves, D. ... Abstract We report the discovery of two new R Coronae Borealis (RCB) stars in the LMC using the MACHO ... 583A Keywords: COSMOLOGY: GRAVITATIONAL LENSING; STARS: VARIABLES: OTHER R CORONAE BOREALIS; GALAXIES: MAGELLANIC CLOUDS; Astrophysics E-Print: 29 pages, ...
Tópico(s): Astronomical Observations and Instrumentation
1996 - IOP Publishing | The Astrophysical Journal
S. A. Stanford, Geoffrey C. Clayton, M. R. Meade, K. H. Nordsieck, B. A. Whitney, M. A. Murison, M. A. Nook, Christopher M. Anderson,
... Volume Content Graphics Metrics Export Citation NASA/ADS R Coronae Borealis Dust Ejections: A Preferred Plane? Stanford, S. A. ; ... A. ; Anderson, C. M. Abstract Spectropolarimetric observations of R Coronae Borealis obtained during the brightness minimum of 1986 are ... Stellar Rotation; Astronomy; POLARIZATION; STARS: CIRCUMSTELLAR SHELLS; STARS: R CORONAE BOREALIS; STARS: VARIABLES full text sources ADS | data products ...
Tópico(s): Astronomy and Astrophysical Research
1988 - IOP Publishing | The Astrophysical Journal
... NASA/ADS The Nature of the Dust around R Coronae Borealis Stars: Isolated Amorphous Carbon or Graphite Fractals? Hecht, ... 367..635H Keywords: Carbon; Cosmic Dust; Fractals; Graphite; R Coronae Borealis Stars; Stellar Envelopes; Crystal Growth; Grain Size; Interstellar Extinction; Interstellar Matter; Iue; Stellar Models; Astrophysics; STARS: R CORONAE BOREALIS; STARS: CIRCUMSTELLAR SHELLS; INTERSTELLAR: GRAINS full text sources ...
Tópico(s): Astrophysics and Star Formation Studies
1991 - IOP Publishing | The Astrophysical Journal
... Export Citation NASA/ADS Fractal Dust Grains around R Coronae Borealis Stars Wright, Edward L. Abstract Discrete dipole approximation ... 185586 Bibcode: 1989ApJ...346L..89W Keywords: Cosmic Dust; R Coronae Borealis Stars; Absorption Spectra; Graphite; Interstellar Extinction; Optical Properties; Ultraviolet Radiation; Astrophysics; INTERSTELLAR: GRAINS; STARS: R CORONAE BOREALIS full text sources ADS | data products SIMBAD (2)
Tópico(s): Astrophysics and Star Formation Studies
1989 - IOP Publishing | The Astrophysical Journal
... Interpretation of the spectral and photometric variations of R Coronae Borealis. Hartmann, L. ; Apruzese, J. P. Abstract A consistent ... spectral and photometric (infrared and visual) variations of R Coronae Borealis is developed. It is found that the extreme ... 154119 Bibcode: 1976ApJ...203..610H Keywords: Infrared Astronomy; R Coronae Borealis Stars; Spectrum Analysis; Stellar Envelopes; Stellar Spectrophotometry; Variable ...
Tópico(s): Astro and Planetary Science
1976 - IOP Publishing | The Astrophysical Journal
Geoffrey C. Clayton, B. A. Whitney, S. A. Stanford, J. S. Drilling,
... Graphics Metrics Export Citation NASA/ADS Observations of R Coronae Borealis Stars in Decline: Empirical Arguments for Dust Formation ... 1992ApJ...397..652C Keywords: Cosmic Dust; Interstellar Matter; R Coronae Borealis Stars; Stellar Envelopes; Stellar Evolution; Emission Spectra; Iue; ... DUST; EXTINCTION; STARS: CIRCUMSTELLAR MATTER; STARS: VARIABLES: OTHER R CORONAE BOREALIS; ULTRAVIOLET: STARS full text sources ADS | data products ...
Tópico(s): Astro and Planetary Science
1992 - IOP Publishing | The Astrophysical Journal
... Fourier analysis of recently published photometry of R Coronae Borealis (R CrB) has indicated that the star may be ...
Tópico(s): Geological and Geophysical Studies
1991 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
F. C. Gillett, D. E. Backman, C. Beichman, G. Neugebauer,
... Metrics Export Citation NASA/ADS IRAS Observations of R Coronae Borealis---Detection and Study of a Fossil Shell Gillett, ... 164738 Bibcode: 1986ApJ...310..842G Keywords: Infrared Stars; R Coronae Borealis Stars; Spaceborne Astronomy; Stellar Envelopes; Stellar Evolution; Stellar ... INFRARED: SOURCES; INTERSTELLAR: GRAINS; STARS: CIRCUMSTELLAR SHELLS; STARS: R CORONAE BOREALIS full text sources ADS | data products SIMBAD (1)
Tópico(s): Astrophysics and Star Formation Studies
1986 - IOP Publishing | The Astrophysical Journal
... NASA/ADS Double white dwarfs as progenitors of R Coronae Borealis stars and type I supernovae. Webbink, R. F. ... 277..355W Keywords: Binary Stars; Corona Borealis Constellation; R Coronae Borealis Stars; Stellar Evolution; Supernovae; White Dwarf Stars; B ...
Tópico(s): Astronomy and Astrophysical Research
1984 - IOP Publishing | The Astrophysical Journal
... Volume Content Graphics Metrics Export Citation NASA/ADS R Coronae Borealis Stars and Planetary Nebulae Schaefer, B. E. Abstract IRAS observations of R Coronae Borealis type stars (R CrB's) suggests that a ... 644S Keywords: Infrared Astronomy; Peculiar Stars; Planetary Nebulae; R Coronae Borealis Stars; Variable Stars; Astronomical Catalogs; Power Spectra; Stellar ... NEBULAE: PLANETARY; STARS: CIRCUMSTELLAR SHELLS; STARS: EVOLUTION; STARS: R CORONAE BOREALIS full text sources ADS | data products SIMBAD (34)
Tópico(s): Astronomical Observations and Instrumentation
1986 - IOP Publishing | The Astrophysical Journal
W. A. Stein, John E. Gaustad, F. C. Gillett, R. F. Knacke,
... Emission from Two Peculiar Objects-R Aquarii and R Coronae Borealis Stein, Wayne A. ; Gaustad, John E. ; Gillett, F. ... 14 j~ of the carbon-rich peculiar variable R Coronae Borealis and the M7 variable associated with an emission nebula R Aquarii. It has been found that both of ...
Tópico(s): Astrophysics and Star Formation Studies
1969 - IOP Publishing | The Astrophysical Journal
... Export Citation NASA/ADS The 1960 Minimum of R Coronae Borealis. Payne-Gaposchkin, Cecilia Abstract The spectrum of R Coronae Borealis at maximum is that of a supergiant carbon ...
Tópico(s): Astronomy and Astrophysical Research
1963 - IOP Publishing | The Astrophysical Journal
... Metrics Export Citation NASA/ADS The Spectrum of R Coronae Borealis at the 1948-1949 Minimum. Herbig, George H. Abstract The spectrum of R Coronae Borealis was observed at the McDonald Observatory on the ...
Tópico(s): Solar and Space Plasma Dynamics
1949 - IOP Publishing | The Astrophysical Journal
... The Spectrum Analysis of the Hot Carbon Star, R Coronae Borealis Berman, Louis Abstract A detailed investigation of the spectrum of the irregular variable R Coronae Borealis, in the region XX 4300-4900 was undertaken ...
Tópico(s): Solar and Space Plasma Dynamics
1935 - IOP Publishing | The Astrophysical Journal