J/other/PASA/41.84 Sydney Radio Star Catalogue (Driessen+, 2024)
The Sydney Radio Star Catalogue:
Properties of radio stars at megahertz to gigahertz frequencies.
Driessen L.N., Pritchard J., Murphy T., Heald G., Robrade J., Das B.,
Duchesne S., Kaplan D.L., Lenc E., Lynch C., Mitchell-Bolton J.,
Pope B.J.S., Rose K., Stelzer B., Wang Y., Zic A.
<Publ. Astron. Soc. Australia, 41, 84 (2024)>
=2024PASA...41...84D 2024PASA...41...84D (SIMBAD/NED BibCode)
ADC_Keywords: Radio continuum ; Stars, flare ; X-ray sources ;
Stars, Wolf-Rayet ; Stars, radio
Keywords: radio continuum: stars - stars: flare - stars: variables: general -
X-rays: stars - stars: Wolf-Rayet
Abstract:
We present the Sydney Radio Star Catalogue, a new catalogue of stars
detected at megahertz to gigahertz radio frequencies. It consists of
839 unique stars with 3405 radio detections, more than doubling the
previously known number of radio stars. We have included stars from
large area searches for radio stars found using circular polarisation
searches, cross-matching, variability searches, and proper motion
searches as well as presenting hundreds of newly detected stars from
our search of Australian SKA Pathfinder observations. The focus of
this first version of the catalogue is on objects detected in surveys
using SKA precursor and pathfinder instruments; however we will expand
this scope in future versions. The 839 objects in the Sydney Radio
Star Catalogue are distributed across the whole sky and range from
ultracool dwarfs to Wolf- Rayet stars. We demonstrate that the radio
luminosities of cool dwarfs are lower than the radio luminosities of
more evolved sub-giant and giant stars. We use X-ray detections of 530
radio stars by the eROSITA soft X-ray instrument onboard the SRG
(Spectrum Roentgen Gamma) spacecraft to show that almost all of the
radio stars in the catalogue are over-luminous in the radio,
indicating that the majority of stars at these radio frequencies are
coherent radio emitters. The Sydney Radio Star Catalogue can be found
in Vizier or at www.radiostars.org.
Description:
This is the first release of the Sydney Radio Star Catalogue,
containing stars identified as emitting radio light. It contains stars
detected below 3GHz by ASKAP, LOFAR, MeerKAT or the VLA. There are two
tables, the Stars.dat table and the Radio.dat table. The Stars.dat
table contains the identification information and basic properties of
each unique star in the catalogue, so there is one row per star. The
Radio.dat table contains data from each radio measurement of each star
in the catalogue; so there may be more than one row per star. Both
tables contain a unique identifier for each star of the format SRSC
XXXXX to link the information in the tables together.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 312 865 Table of unique radio detected stars
radio.dat 296 3570 Radio measurements of the radio stars
in stars.dat
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See also:
https://www.radiostars.org : Sydney Radio Star Catalogue Home Page
Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Ident Unique identifier for each star in the SRSC
12- 39 A28 --- Simbad Main identifier from the CDS Simbad database
41- 68 A28 --- Gaia Gaia Data Release 2 or 3 unique source
identifier (unique within a particular
Data Release)
70- 84 A15 --- Tycho ? TYC1-3 (TYC number) Tycho identifier
86-108 A23 --- 2MASS 2MASS designation from the Two Micron All
Sky Survey at IPAC
110-121 A12 --- GCVS Designation from the General Catalogue of
Variable Stars (GCVS)
123-132 A10 --- HIP Hipparcos input catalogue running number
134-149 A16 --- UCAC4 Recommended identifier from the Fourth U.S.
Naval Observatory CCD Astrograph Catalog
151-159 A9 --- Survey Survey used to provide the astrometric
information shown here (1)
161-188 A28 --- SurveyId Designation of the source in the survey used
to provide the astrometric information
for the source
190-208 A19 yr Epoch Observation epoch of the source in the
survey (2)
210-225 F16.12 deg RAdeg Right ascension (J2000) proper-motion
corrected to the date in the "Epoch" column
227-231 E5.1 mas e_RAdeg ? Uncertainty on the Right Ascension
233-248 F16.12 degree DEdeg Declination (J2000) proper-motion
corrected to the date in the "Epoch" column
250-254 E5.1 mas e_DEdeg ? Uncertainty on the Declination
256-263 F8.3 mas plx ? Parallax provided by the survey
265-269 F5.2 mas e_plx ? Uncertainty on the parallax
271-279 F9.3 mas/yr pmRA ? Proper-motion in Right Ascension
(pmRA*cos(Dec))
281-287 F7.3 mas/yr e_pmRA ? Uncertainty on the proper-motion in
Right Ascension (pmRA*cos(Dec))
289-297 F9.3 mas/yr pmDE ? Proper-motion in Declination
299-305 F7.3 mas/yr e_pmDE ? Uncertainty on the proper-motion in
Declination
307-309 F3.1 --- MultRadio [0/2] Flag indicating multiple optical
matches to one radio source (3)
311-312 I2 --- Method [2/26] Indicates the search methods used to
identify the radio emission as stellar
emission from this star (4)
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Note (1): i.e. the position, proper-motion and parallax information.
Note (2): The RA and Dec provided here is proper-motion correct/observed,
all RA and Dec are in the J2000 reference frame
Note (3): Multiple optical matches flag as follows:
0 = there is only one optical match to the radio component
1 = there are multiple matches, where 1 is the "preferred" source
and 2 is a "duplicate"
2 = there are multiple matches, where 1 is the "preferred" source
and 2 is a "duplicate"
This is for ease of use, such that selecting rows where this flag = 0 or 1
results in a set of one-to-one radio to optical matches.
If one radio component has multiple optical matches this may indicate that
the optical matches are multiple components of the same stellar system,
but this is not always the case.
Note (4): Method search flag as follows:
2 = cross-match
4 = variability
6 = cross-match and variability
8 = proper-motion
10 = cross-match and proper-motion
16 = Stokes V
18 = cross-match and Stokes V
26 = cross-match, proper-motion and Stokes V
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Byte-by-byte Description of file: radio.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Ident Unique identifier for each star in the SRSC
12- 15 F4.1 arcsec Sep ? Separation between the radio and optical
position (1)
17- 53 A37 --- RadioId Identifier/name of the radio source in
the radio survey
55- 75 A21 --- Field Designation/identifier of the radio field
or observation in the radio survey
77- 95 A19 "datime" Obs.date ISOT start time of the radio observation
97-104 F8.1 s Texp ? Integration time of the radio observation
106-115 F10.5 deg RAdeg ? Right Ascension (J2000) of the source in
the radio observation
117-125 F9.5 deg DEdeg ? Declination (J2000) of the source in
the radio observation
127-131 F5.2 arcsec e_RAdeg ? Uncertainty on the Right Ascension
133-137 F5.2 arcsec e_DEdeg ? Uncertainty on the Declination
139-144 F6.1 MHz Freq Central frequency of the radio observation
146-153 F8.3 mJy/beam SpeakI ? Peak flux density of the Stokes I
detection of the source
155-160 F6.3 mJy/beam e_SpeakI ? Uncertainty on the peak flux density of
the Stokes I detection of the source
162-169 F8.3 mJy StotI ? Integrated flux density of the Stokes I
detection of the source
171-176 F6.3 mJy e_StotI ? Uncertainty on the integrated flux
density of the Stokes I detection of
the source
178-184 F7.2 arcsec bmax ? Major axis of the synthesised beam
186-191 F6.2 arcsec bmin ? Minor axis of the synthesised beam
193-199 F7.2 deg PA ? Position angle of the synthesised beam
201-206 F6.2 arcsec e_bmax ? Uncertainty on the major axis of the
synthesised beam
208-213 F6.2 arcsec e_bmin ? Uncertainty on the major axis of the
synthesised beam
215-230 A16 --- Survey ? Name of the radio survey
232-237 F6.2 mJy/beam SpeakV ? Peak flux density of the Stokes V
detection of the source
239-243 F5.2 mJy/beam e_SpeakV ? Uncertainty on the peak flux density of
the Stokes V detection of the source
245-250 F6.2 mJy StotV ? Integrated flux density of the Stokes V
detection of the source
252-256 F5.2 mJy e_StotV ? Uncertainty on the integrated flux
density of the Stokes V detection of
the source
258-264 A7 --- Tel Radio telescope used
266-270 F5.2 mJy/beam localrmsV ? Local Stokes I rms
272-276 F5.2 mJy/beam localrmsI ? Local Stokes V rms
278-296 A19 --- Ref Reference (bibcode) for the radio star
identification
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Note (1): where the optical position has been proper-motion corrected to the
epoch of the radio observation
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Acknowledgements:
Laura Driessen, laura.driessen(at)sydney.edu.au
References:
Callingham et al., 2023A&A...670A.124C 2023A&A...670A.124C Cat. J/A+A/670/A124
Driessen et al., 2022MNRAS.510.1083D 2022MNRAS.510.1083D
Driessen et al., 2020MNRAS.491..560D 2020MNRAS.491..560D
Wang et al., 2023MNRAS.523.5661W 2023MNRAS.523.5661W
Driessen et al., 2023PASA...40...36D 2023PASA...40...36D
Pritchard et al., 2021MNRAS.502.5438P 2021MNRAS.502.5438P
(End) Patricia Vannier [CDS] 08-Jul-2024