Abundance analyses of the new R Coronae Borealis stars ASAS-RCB-8 and ASAS-RCB-10

B. P. Hema; Gajendra Pandey; Devika Kamath; N. Kameswara Rao; David Lambert; Vincent M. Woolf

doi:10.1088/1538-3873/aa7f25

Abundance analyses of the new R Coronae Borealis stars ASAS-RCB-8 and ASAS-RCB-10

B. P. Hema
, Gajendra Pandey
, Devika Kamath
, N. Kameswara Rao
, David Lambert
, Vincent M. Woolf

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Abundance analyses of the two newly discovered R Coronae Borealis (RCB) stars ASAS-RCB-8 and ASAS-RCB-10 were conducted using high-resolution optical spectra and model atmospheres. Their chemical compositions place the pair among the majority class of RCBs. ASAS-RCB-10 is one of the most N-poor majority RCBs with an above average O abundance. Relative to ASAS-RCB-10, ASAS-RCB-8 is H poor by 1.6 dex, O-poor by 0.7 dex but N-rich by 0.8 dex suggesting a higher contamination by CNO-cycled material.

Original language	English
Article number	104202
Pages (from-to)	1-8
Number of pages	8
Journal	Publications of the Astronomical Society of the Pacific
Volume	129
Issue number	980
DOIs	https://doi.org/10.1088/1538-3873/aa7f25
Publication status	Published - 1 Oct 2017

Keywords

stars: abundances
stars: chemically peculiar
stars: distances

Access to Document

10.1088/1538-3873/aa7f25

Cite this

@article{3de41cca8e2747b384be92ec0c99fef4,

title = "Abundance analyses of the new R Coronae Borealis stars ASAS-RCB-8 and ASAS-RCB-10",

abstract = "Abundance analyses of the two newly discovered R Coronae Borealis (RCB) stars ASAS-RCB-8 and ASAS-RCB-10 were conducted using high-resolution optical spectra and model atmospheres. Their chemical compositions place the pair among the majority class of RCBs. ASAS-RCB-10 is one of the most N-poor majority RCBs with an above average O abundance. Relative to ASAS-RCB-10, ASAS-RCB-8 is H poor by 1.6 dex, O-poor by 0.7 dex but N-rich by 0.8 dex suggesting a higher contamination by CNO-cycled material.",

keywords = "stars: abundances, stars: chemically peculiar, stars: distances",

author = "Hema, \{B. P.\} and Gajendra Pandey and Devika Kamath and Rao, \{N. Kameswara\} and David Lambert and Woolf, \{Vincent M.\}",

year = "2017",

month = oct,

day = "1",

doi = "10.1088/1538-3873/aa7f25",

language = "English",

volume = "129",

pages = "1--8",

journal = "Publications of the Astronomical Society of the Pacific",

issn = "0004-6280",

publisher = "Institute of Physics",

number = "980",

}

TY - JOUR

T1 - Abundance analyses of the new R Coronae Borealis stars ASAS-RCB-8 and ASAS-RCB-10

AU - Hema, B. P.

AU - Pandey, Gajendra

AU - Kamath, Devika

AU - Rao, N. Kameswara

AU - Lambert, David

AU - Woolf, Vincent M.

PY - 2017/10/1

Y1 - 2017/10/1

N2 - Abundance analyses of the two newly discovered R Coronae Borealis (RCB) stars ASAS-RCB-8 and ASAS-RCB-10 were conducted using high-resolution optical spectra and model atmospheres. Their chemical compositions place the pair among the majority class of RCBs. ASAS-RCB-10 is one of the most N-poor majority RCBs with an above average O abundance. Relative to ASAS-RCB-10, ASAS-RCB-8 is H poor by 1.6 dex, O-poor by 0.7 dex but N-rich by 0.8 dex suggesting a higher contamination by CNO-cycled material.

AB - Abundance analyses of the two newly discovered R Coronae Borealis (RCB) stars ASAS-RCB-8 and ASAS-RCB-10 were conducted using high-resolution optical spectra and model atmospheres. Their chemical compositions place the pair among the majority class of RCBs. ASAS-RCB-10 is one of the most N-poor majority RCBs with an above average O abundance. Relative to ASAS-RCB-10, ASAS-RCB-8 is H poor by 1.6 dex, O-poor by 0.7 dex but N-rich by 0.8 dex suggesting a higher contamination by CNO-cycled material.

KW - stars: abundances

KW - stars: chemically peculiar

KW - stars: distances

UR - https://www.scopus.com/pages/publications/85029447331

U2 - 10.1088/1538-3873/aa7f25

DO - 10.1088/1538-3873/aa7f25

M3 - Article

AN - SCOPUS:85029447331

SN - 0004-6280

VL - 129

SP - 1

EP - 8

JO - Publications of the Astronomical Society of the Pacific

JF - Publications of the Astronomical Society of the Pacific

IS - 980

M1 - 104202

ER -

Abundance analyses of the new R Coronae Borealis stars ASAS-RCB-8 and ASAS-RCB-10

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this