TY - JOUR
T1 - Strong [O III] and [N II] emission lines in globular clusters from photoionized R Corona Borealis star winds
AU - Maccarone, Thomas J.
AU - Warner, Brian
PY - 2011/1
Y1 - 2011/1
N2 - The globular cluster X-ray source CXO J033831.8-352604 in NGC 1399 has recently been found to show strong emission lines of [O III] and [N II] in its optical spectrum in addition to ultraluminous X-ray emission with a soft X-ray spectrum. It was further suggested that this system contained an intermediate-mass black hole which had tidally disrupted a white dwarf, producing the strong emission lines without detectable hydrogen emission. We show that an alternative exists which can explain the data more naturally in which the oxygen-and nitrogen-rich material is ejected from an R Corona Borealis (RCB) star. The scenario we propose here does not require an intermediate-mass black hole as the accretor, but also does not exclude the possibility.
AB - The globular cluster X-ray source CXO J033831.8-352604 in NGC 1399 has recently been found to show strong emission lines of [O III] and [N II] in its optical spectrum in addition to ultraluminous X-ray emission with a soft X-ray spectrum. It was further suggested that this system contained an intermediate-mass black hole which had tidally disrupted a white dwarf, producing the strong emission lines without detectable hydrogen emission. We show that an alternative exists which can explain the data more naturally in which the oxygen-and nitrogen-rich material is ejected from an R Corona Borealis (RCB) star. The scenario we propose here does not require an intermediate-mass black hole as the accretor, but also does not exclude the possibility.
KW - Stars: peculiar
KW - Stars: winds, outflows
KW - X-rays: individual: CXO J033831.8-352604
UR - http://www.scopus.com/inward/record.url?scp=79952476011&partnerID=8YFLogxK
U2 - 10.1111/j.1745-3933.2010.00973.x
DO - 10.1111/j.1745-3933.2010.00973.x
M3 - Letter
AN - SCOPUS:79952476011
SN - 1745-3933
VL - 410
SP - L32-L36
JO - Monthly Notices of the Royal Astronomical Society: Letters
JF - Monthly Notices of the Royal Astronomical Society: Letters
IS - 1
ER -