HST spectrum and timing of the ultra-compact X-ray binary candidate 47 Tuc X9

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Title

HST spectrum and timing of the ultra-compact X-ray binary candidate 47 Tuc X9

Content partner

University of Canterbury Library

Collection

UC Research Repository

Description

To confirm the nature of the donor star in the ultra-compact X-ray binary candidate 47 Tuc X9, we obtained optical spectra (3,000-10,000 Å) with the Hubble Space Telescope / Space Telescope Imaging Spectrograph. We find no strong emission or absorption features in the spectrum of X9. In particular, we place 3σ upper limits on the Hα and He II λ4686 emission line equivalent widths −EWHα <≈ 14 Å and −EWHeII <≈ 9 Å, respectively. This is much lower than seen for typical X-ray binaries at a simil...

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Format

Research paper

Research format

Journal article

Date created

2017

Creator

Tudor V / Miller-Jones JCA / Knigge C / Maccarone TJ / Tauris TM / Bahramian A / Chomiuk L / Heinke CO / Sivakoff GR / Strader J / Plotkin RM / Soria R / Albrow MD / Anderson GE / Berg MVD / Bernardini F / Bogdanov S / Britt CT / Russell DM / Zurek DR

URL

http://hdl.handle.net/10092/15662

Related subjects

astro-ph.HE / astro-ph.SR / accretion - stars / black holes - stars / neutron - X-rays: binaries / Physical sciences / Astronomical sciences / Stellar astronomy and planetary systems / Physical Sciences / Astronomical and Space Sciences / High Energy Astrophysics; Cosmic Rays

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