R Coronae Borealis | has amplitude 6th magnitude to 14th magnitude | ![has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:41.0 has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:41.0](facet.gif) |
has spectral type F star (F8-G0 Ib) | ![has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:41.0 has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:41.0](facet.gif) |
has reference Clayton, G.C. : 1996, PASP 108. The R Coronae Borealis Stars | ![has URL: http://adsabs.harvard.edu/cgi-bin/bib_query?1996PASP..108..225C, 2001-09-27 09:30:41.0 has URL: http://adsabs.harvard.edu/cgi-bin/bib_query?1996PASP..108..225C, 2001-09-27 09:30:41.0](facet.gif) |
has reference Clayton, G.C., Whitney, B.A., Stanford, S. A., Drilling, J.S. : 1992, ApJ 397, 652. Observations of R Coronae Borealis stars in decline - Empirical arguments for dust formation near the stellar surface | ![has URL: http://adsabs.harvard.edu/cgi-bin/bib_query?1992ApJ...397..652C, 2001-09-27 09:30:41.0 has URL: http://adsabs.harvard.edu/cgi-bin/bib_query?1992ApJ...397..652C, 2001-09-27 09:30:41.0](facet.gif) |
has reference Whitney, B.A., Soker, N., Clayton, G.C. : 1991, AJ 102, 284. Model for R Coronae Borealis stars | ![has URL: http://adsabs.harvard.edu/cgi-bin/bib_query?1991AJ....102..284W, 2001-09-27 09:30:41.0 has URL: http://adsabs.harvard.edu/cgi-bin/bib_query?1991AJ....102..284W, 2001-09-27 09:30:41.0](facet.gif) |
has outburst spectra with many emission-lines | ![2001-09-27 09:30:41.0 2001-09-27 09:30:41.0](facet.gif) |
is a part of Corona Borealis | ![2001-09-27 09:30:41.0 2001-09-27 09:30:41.0](facet.gif) |
has recovery time several months to a year | ![2001-09-27 09:30:41.0 2001-09-27 09:30:41.0](facet.gif) |
has outburst start time within a few weeks | ![2001-09-27 09:30:41.0 2001-09-27 09:30:41.0](facet.gif) |
has definition Star with a large infrared excess and a rather high 7Li abundance. | ![has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:41.0 has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:41.0](facet.gif) |
is an instance of R Coronae Borealis variable | ![has URL: http://www.aavso.org/vstar/vsotm/0100.stm, 2001-09-27 09:30:41.0 has URL: http://www.aavso.org/vstar/vsotm/0100.stm, 2001-09-27 09:30:41.0](facet.gif) |
R Coronae Borealis variable | has prototype R Corona Borealis | ![2001-09-27 09:30:41.0 2001-09-27 09:30:41.0](facet.gif) |
cataclysmic variable | has synonym eruptive variable | ![2001-09-27 09:30:40.0 2001-09-27 09:30:40.0](facet.gif) |
has synonym explosive variable | ![2001-09-27 09:30:40.0 2001-09-27 09:30:40.0](facet.gif) |
has peak brightness | ![2001-09-27 09:30:40.0 2001-09-27 09:30:40.0](facet.gif) |
has acronym CV | ![2001-09-27 09:30:40.0 2001-09-27 09:30:40.0](facet.gif) |
supergiant | has luminosity class I | ![2001-09-27 09:30:50.0 2001-09-27 09:30:50.0](facet.gif) |
hydrogen-deficient star | has hydrogen line strength weak | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
star | has star surface temperature | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has V magnitude | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has B magnitude | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has U magnitude | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has position on celestial sphere from the point of view of Earth | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has parallax from the point of view of Earth's orbit | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has proper motion | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has radiation at surface which is diffused out from the hotter core | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has energy source gravitational contraction and or fusion | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has energy production which takes place primarily within the core | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has surface density which depends on luminosity class | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has surface temperature greater than 1000 Kelvin | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has apparent magnitude | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has absolute magnitude | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has age | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has catalog star catalog | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has material hydrogen, helium | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
has velocity determined from proper motion and radial velocity | ![2001-09-27 09:30:25.0 2001-09-27 09:30:25.0](facet.gif) |
has mass greater than 0.08 the sun's mass | ![2001-09-27 09:30:24.0 2001-09-27 09:30:24.0](facet.gif) |
variable | has name designated with - R, S, T, U, V, W, X, Y, or Z and the genitive of the latin constellation name
- RR, RS, RT, RU, RV, RW, RX, RY, or RZ and the genitive of the latin constellation name when the single letter designations are exhausted
- AA...AZ, BB...BZ, etc. (omitting J), which ends with QQ...QZ and the genitive of the latin constellation namewhen the RR...RZ designations are exhausted
- V 335, V 336, etc., when the double letter designations are exhausted
| ![2001-09-27 09:30:34.0 2001-09-27 09:30:34.0](facet.gif) |
has observational problem some difficulty in distinguishing between various kinds | ![2001-09-27 09:30:34.0 2001-09-27 09:30:34.0](facet.gif) |
has observable variation time scale within a period of decades | ![has URL: http://www.aavso.org, 2001-09-27 09:30:34.0 has URL: http://www.aavso.org, 2001-09-27 09:30:34.0](facet.gif) |
has light curve | ![2001-09-27 09:30:34.0 2001-09-27 09:30:34.0](facet.gif) |
has optical brightness variation 0.2 magnitudes or greater | ![2001-09-27 09:30:34.0 2001-09-27 09:30:34.0](facet.gif) |
celestial body | has spectra | ![2001-09-27 09:30:09.0 2001-09-27 09:30:09.0](facet.gif) |
physical object | has location or center of gravity | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has angular momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has momentum | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has temperature | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has volume | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |
has extent | ![2001-09-27 09:27:27.0 2001-09-27 09:27:27.0](facet.gif) |