J/A+A/677/A186 UltraCompCAT catalog (Armas Padilla+, 2023)
UltraCompCAT: A comprehensive catalogue of ultra-compact and short orbital
period X-ray binaries.
Armas Padilla M., Corral-Santana J.M., Borghese A., Cuneo V.A.,
Munoz-Darias T., Casares J., Torres M.A.P.
<Astron. Astrophys. 677, A186 (2023)>
=2023A&A...677A.186A 2023A&A...677A.186A (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, X-ray ; Stars, distances
Keywords: accretion, accretion disks - stars: black holes - stars: neutron -
X-rays: binaries - catalogs
Abstract:
Ultracompact X-ray binaries (UCXBs) are a distinctive but elusive
family of low-mass X-ray binaries (LMXBs) characterised by their tight
orbits and degenerate donor stars. Here we present UltraCompCAT, the
first online and comprehensive catalogue of UCXBs. The initial version
of UltraCompCAT comprises 49 sources, including 20 confirmed UCXBs
(those with a measured orbital period shorter than 80 min) and 25
systems that we label 'candidates' based on their multi-wavelength
phenomenology. For completeness, we also include four LMXBs with
orbital periods in the range of 80 to 120 min, since they might be
related to (e.g. close progenitors) or even part of the UCXB
population that evolved towards longer periods. We discuss the orbital
period and Galactic distribution of the catalogue sample. We provide
evidence for the presence of at least two separate groups of UCXBs,
one formed by persistent systems with orbital periods shorter than
30-min and a second group of transient objects (70%) with periods in
the range of 40 to 60-min. We show that the former group is dominated
by sources formed in globular clusters, while the latter accounts for
the (known) UCXB population in the Galactic field. We discuss the
possible evolutionary channels for the two groups.
Description:
We have presented the first comprehensive catalogue of ultracompact
and short orbital period X-ray binaries, which currently includes 49
sources. This compilation is available online
(https://research.iac.es/proyecto/compactos/UltraCompCAT/) and
includes a carefully revised collection of observational properties
for each source. UltraCompCAT will grow as more systems are discovered
and more orbital periods are measured.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog.dat 230 49 Catalogue of ultra-compact and short orbital
period X-ray binaries
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See also:
https://research.iac.es/proyecto/compactos/UltraCompCAT : Catalog Home Page
Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- ID [1/49] ID number
4- 24 A21 --- Name Preferred name of the system
26- 83 A58 --- OName Other name(s)
85- 86 I2 h RAh Right ascension (J2000)
88- 89 I2 min RAm Right ascension (J2000)
91- 97 F7.4 s RAs Right ascension (J2000)
99 A1 --- DE- Declination sign (J2000)
100-101 I2 deg DEd Declination (J2000)
103-104 I2 arcmin DEm Declination (J2000)
106-112 F7.4 arcsec DEs Declination (J2000)
114-122 A9 --- Accretor Confirmed nature of the accretor (1)
125 A1 --- P/T [PT] Type of accretion (2)
127-133 A7 ---- Short-B [Short-B ] Detection of short normal burst
135-136 A2 --- IB [IB ] Detection of intermediate long burst
138-139 A2 --- SB [SB ] Detection of superburst
142 A1 --- l_Dist [~<] limit flag on Dist
143-148 F6.3 kpc Dist ? Distance
150-153 F4.2 kpc e_Dist ? Distance error
154-163 A10 --- r_Dist Distance reference (3)
164 A1 --- l_Dist2 Limit flag on Dist2
165-169 F5.2 kpc Dist2 ? Second distance value
171-174 F4.2 kpc e_Dist2 ? Second distance error
175-178 A4 --- n_Dist2 Second distance reference (3)
180-189 F10.6 min Porb ?=- Orbial period
191-198 E8.2 mW/m2 FX Unabsorbed peak X-ray flux in (2-10)keV band
200-214 A15 mag magP Peak Optical or IR apparent magnitude
216-230 A15 mag magQ Quiescence (q), if the system is transient
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Note (1): Nature of the accretor as follows:
BH = black hole
NS = neutron star
NS (AMXP) = if the neutron star is an accreting X-ray millisecond pulsar
Note (2): Type of accretion as follows:
P = persistent
T = transient
Note (3): Distance references as follows:
(a) = assumed distance
(G) = distance from Gaia parallax
(H) = distances estimated using thermonuclear bursts, assuming hydrogen-rich
(He) = distances estimated using thermonuclear bursts, assuming pure helium
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Acknowledgements:
Montserrat Armas Padilla, m.armaspadilla(at)gmail.com
(End) Patricia Vannier [CDS] 24-Aug-2023