[en] Imaging and spectroscopy are presented of the classical R CrB star UW Cen obtained when the star was in a deep minimum. These show the presence of a faint reflection nebula, the inner parts of which display two sets of symmetrical 'jets' centered on the star. The possibilities of whether the nebular structure can be associated with last thermal pulse evolution, white dwarf merger, or the mechanism causing the characteristic R CrB minima are discussed.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Pollacco, D. L.; University Observatory, Saint Andrews, Scotland
Hill, P. W.; University Observatory, Saint Andrews, Scotland
Houziaux, Léo ; Université de Liège - ULiège > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences)
Manfroid, Jean ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Language :
English
Title :
Nebulae around R Coronae Borealis stars - Clues to their evolutionary status?
Bateson, F. M., 1990. RAS NZ Variable Star Section Observations for 1990 May, serial number M90/5.
Benz, W., Hills, J. G. & Thielemann, F.-K., 1989. Astrophys. J., 342, 986.
Berman, L., 1935. Astrophys. J., 81, 369.
Drilling, J. S., 1986. In: Hydrogen-Deficient Stars and Related Objects, LAU Coll. No. 87, p. 9, eds Hunger, K., Schönberner, D. & Rao, N. Kameswara, Reidel, Dordrecht.
Feast, M. W., 1979. In: Changing Trends in Variable Star Research, IAU Coll. No. 46, p. 246, eds Bateson, F. M., Smak, J. & Urch, I. H., University of Waikato, Hamilton, New Zealand.
Feast, M. W., 1986. In: Hydrogen-Deficient Stars and Related Objects, IAU Coll. No. 87, p. 151, eds Hunger, K., Schönberner, D. & Rao, N., Kameswara, Reidel, Dordrecht.
Feast, M. W., 1990. In: Confrontation Between Stellar Pulsation and Evolution, ed. Cacciari, C., Bologna, Italy, ASP Conference Series, in press.
Harwit, M., 1989. Astrophysical Concepts, 2nd edn, p. 223, Springer-Verlag, Berlin.
Herbig, G., 1949. Astrophys. J., 110, 143.
Herbig, G., 1968. Mem. Soc. R. Sci. Liège, 17, 353.
Iben, I. Jr. & Tutukov, A. V., 1989. Astrophys. J., 342, 430.
Iben, I. Jr., Kaler, J. B., Truran, J. W. & Renzini, A., 1983. Astrophys. J., 264, 605.
Jeffery, C., S., Drilling, J. S. & Heber, U., 1987. Mon Not. R. astr. Soc., 226, 317.
Pollacco, D. L., 1989. PhD thesis, St Andrews University.
Pollacco, D. L. & Hill, P. W., 1990. Mon. Not. R. astr. Soc., 248, 572.
Pollacco, D. L., Tadhunter, C. N. & Hill, P. W., 1990. Mon Not. R. astr. Soc., 245, 204.
Rao, N. Kameswara & Nandy, K., 1986. Mon Not. R. astr. Soc., 222, 357.
Renzini, A., 1979. In: Stars and Stellar Systems, p. 135, ed. Westerland, B. E., Reidel, Dordrecht.
Renzini, A., 1981. In: Effects of Mass loss on Stellar Evolution, IAU Coll. No. 59, p. 319, eds Chiosi, C. & Stalio, R., Reidel, Dordrecht.
Roche, P. F., 1989. Planetary Nebulae, IAU Symp. No. 131, p. 117, ed. Torres-Peimbert, S., Kluwer, Dordrecht.
Stanford, S. A., and Clayton, G. C., Meade, M. R., Nordsieck, K. H., and Whitney, B. A., Murison, M. A., Nook, M. A. & Anderson, C. M., 1988. Astrophys. J., 325, L9.
Schönberner, D., 1977. Astr. Astrophys., 57, 437.
Schönberner, D., 1981. Astr. Astrophys., 103, 119.
Schönberner, D., 1986. In: Hydrogen-Deficient Stars and Related Objects, IAU Coll. No. 87, p. 471, eds Hunger, K., Schönberner, D. & Rao, N. Kameswara, Reidel, Dordrecht.
Schönberger, D. & Drilling, J. S., 1983. Astrophys. J., 268, 225.
Schwarz, H. E. & Melnick, J., 1990. The ESO Users Manual, p. 74.
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.
