Are the R Coronae Borealis Stars Produced by White Dwarf Mergers?

被引：0

作者：

Clayton, Geoffrey C. ^{[1
]}

机构：

[1] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

18TH EUROPEAN WHITE DWARF WORKSHOP | 2013年 / 469卷

关键词：

HYDROGEN-DEFICIENT CARBON; SAKURAIS-OBJECT; BINARY; EVOLUTION; DISCOVERY; ORIGIN; O-18;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The R Coronae Borealis (RCB) stars are rare hydrogen-deficient, carbon-rich supergiants. Two evolutionary scenarios have been suggested, a double degenerate merger of two white dwarfs (WDs), or a final helium shell flash in a PN central star. The evidence pointing toward a WD merger or a FF origin for RCB stars is contradictory. The population of RCB stars in the Galaxy may be consistent with the number of He/CO WD mergers. If so, this would be an exciting result since RCB stars may be low-mass analogs of Type Ia SNe.

引用

页码：133 / 136

页数：4

共 50 条

[31] Tracking down R Coronae Borealis stars from their mid-infrared WISE colours [J].

Tisserand, P. .

ASTRONOMY & ASTROPHYSICS, 2012, 539

[32] THE HOT R CORONAE BOREALIS STAR DY CENTAURI IS A BINARY [J].

Rao, N. Kameswara ;

Lambert, David L. ;

Garcia-Hernandez, D. A. ;

Jeffery, C. Simon ;

Woolf, Vincent M. ;

McArthur, Barbara .

ASTROPHYSICAL JOURNAL LETTERS, 2012, 760 (01)

[33] DUST AROUND R CORONAE BOREALIS STARS. I. SPITZER/INFRARED SPECTROGRAPH OBSERVATIONS [J].

Anibal Garcia-Hernandez, D. ;

Rao, N. Kameswara ;

Lambert, David L. .

ASTROPHYSICAL JOURNAL, 2011, 739 (01)

[34] V532 Oph Is a New R Coronae Borealis Star [J].

Clayton, Geoffrey C. ;

Kilkenny, D. ;

Wils, P. ;

Welch, D. L. .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2009, 121 (879) :461-464

[35] A plethora of new R Coronae Borealis stars discovered from a dedicated spectroscopic follow-up survey [J].

Tisserand, P. ;

Clayton, G. C. ;

Bessell, M. S. ;

Welch, D. L. ;

Kamath, D. ;

Wood, P. R. ;

Wils, P. ;

Wyrzykowski, L. ;

Mroz, P. ;

Udalski, A. .

ASTRONOMY & ASTROPHYSICS, 2020, 635

[36] REMNANTS OF BINARY WHITE DWARF MERGERS [J].

Raskin, Cody ;

Scannapieco, Evan ;

Fryer, Chris ;

Rockefeller, Gabriel ;

Timmes, F. X. .

ASTROPHYSICAL JOURNAL, 2012, 746 (01)

[37] Census of R Coronae Borealis Stars. I. Infrared Light Curves from Palomar Gattini IR [J].

Karambelkar, Viraj R. ;

Kasliwal, Mansi M. ;

Tisserand, Patrick ;

De, Kishalay ;

Anand, Shreya ;

Ashley, Michael C. B. ;

Delacroix, Alex ;

Hankins, Matthew ;

Jencson, Jacob E. ;

Lau, Ryan M. ;

McKenna, Dan ;

Moore, Anna ;

Ofek, Eran O. ;

Smith, Roger M. ;

Soria, Roberto ;

Soon, Jamie ;

Tinyanont, Samaporn ;

Travouillon, Tony ;

Yao, Yuhan .

ASTROPHYSICAL JOURNAL, 2021, 910 (02)

[38] R Coronae Borealis and dustless hydrogen-deficient carbon stars likely have different oxygen isotope ratios [J].

Karambelkar, V ;

Kasliwal, M. M. ;

Tisserand, P. ;

Clayton, G. C. ;

Crawford, C. L. ;

Anand, S. G. ;

Geballe, T. R. ;

Montiel, E. .

ASTRONOMY & ASTROPHYSICS, 2022, 667

[39] Abundance Analyses of the New R Coronae Borealis Stars ASAS-RCB-8 and ASAS-RCB-10 [J].

Hema, B. P. ;

Pandey, Gajendra ;

Kamath, Devika ;

Rao, N. Kameswara ;

Lambert, David ;

Woolf, Vincent M. .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 2017, 129 (980)

[40] The Role of Dredge-up in Double White Dwarf Mergers [J].

Staff, Jan. E. ;

Wiggins, Brandon ;

Marcello, Dominic ;

Motl, Patrick M. ;

Even, Wesley ;

Fryer, Chris L. ;

Raskin, Cody ;

Clayton, Geoffrey C. ;

Frank, Juhan .

ASTROPHYSICAL JOURNAL, 2018, 862 (01)

← 1 2 3 4 5 →