J/ApJS/247/5 Accurate OH maser positions from SPLASH. III. (Qiao+, 2020)
Accurate OH maser positions from the SPLASH survey.
III. The final 96deg2.
Qiao H.-H., Breen S.L., Gomez J.F., Dawson J.R., Walsh A.J., Green J.A.,
Ellingsen S.P., Imai H., Shen Z.-Q.
<Astrophys. J. Suppl. Ser., 247, 5 (2020)>
=2020ApJS..247....5Q 2020ApJS..247....5Q
ADC_Keywords: Masers; Radio continuum; Galactic plane
Keywords: Catalogs; Interstellar molecules; Circumstellar masers;
Interstellar masers; Star formation; Asymptotic giant branch stars;
Post-asymptotic giant branch
Abstract:
We present high spatial resolution observations of ground-state OH
masers achieved with the Australia Telescope Compact Array (ATCA).
These observations targeted 253 pointing centers containing OH maser
candidates at all four ground-state OH transitions identified in the
Southern Parkes Large-Area Survey in Hydroxyl (SPLASH) across 96deg2
of the southern Galactic plane (332°<l<334° and
-2°<b<+2°, 344°<l<355° and -2°<b<+2°,
358°<l<4° and +2°<b<+6°, 5°<l<10° and
-2°<b<+2°). We detect maser emission toward 236 fields and
suggest that 7 out of 17 nondetections are due to the slightly lower
sensitivity of the ATCA observations, combined with some temporal
variability. The superior resolution provided by the ATCA data has
allowed us to identify 362 OH maser sites in the 236 target fields.
Almost half (160 of 362) of these masers have been detected for the
first time. Comparison between these 362 maser sites and information
presented in the literature allowed us to categorize 238 sites as
evolved star sites (66%), 63 as star formation (17%), 8 as supernova
remnants, and 53 as unknown maser sites (15%). We present an analysis
of the OH masers across the full SPLASH survey range (176deg2) and
find that the detection rate of 1.7GHz radio continuum sources (18%)
is lower than that previously found at 8.2 and 9.2GHz (38%). We also
find that the velocity separations of evolved star sites with
symmetric 1612MHz maser profiles are generally smaller than those with
asymmetric profiles.
Description:
The ATCA observations of 253 fields containing OH maser candidates
identified in the Southern Parkes Large-Area Survey in Hydroxyl
(SPLASH; Dawson+ 2014MNRAS.439.1596D 2014MNRAS.439.1596D) data were conducted over a
series of seven observing sessions during 2015 January 27-28,
2015 January 30-February 1, 2015 March 1-7, 2016 February 19-24,
2016 February 26-29, 2016 March 2, and 2016 March 4.
A full description of the observations and data reduction
specifications are provided in Papers I (Qiao+, 2016, J/ApJS/227/26)
and II (Qiao+, 2018, J/ApJS/239/15).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 112 1236 Details of the 362 OH maser sites, derived
from the ATCA observations
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See also:
B/gcvs : General Catalogue of Variable Stars (Samus+, 2007-2017)
VIII/96 : 6-GHz methanol multibeam maser catalogue (Caswell+, 2010-12)
J/A+AS/76/317 : Possible new PNe in IRAS PSC (Preite-Martinez, 1988)
J/ApJS/74/181 : Small-diameter radiosources catalogue (Zoonematkermani+, 1990)
J/A+AS/90/327 : 1612MHz OH survey of IRAS sources (te Lintel Hekkert+ 1991)
J/A+A/277/453 : OH maser survey of cool IRAS sources (David+ 1993)
J/ApJS/91/347 : A 5-GHz VLA Survey of the Galactic Plane (Becker+ 1994)
J/A+AS/107/445 : Envelopes of oxygen-rich AGB stars (Hashimoto, 1994)
J/A+AS/111/237 : OH detections from circumstellar shells (Lewis+, 1995)
J/ApJS/112/557 : Classification of IRAS Sources (Kwok+ 1997)
J/A+AS/122/79 : Galactic Bulge Region OH 1612MHz survey. I. (Sevenster+ 1997)
J/A+AS/124/509 : ATCA/VLA OH 1612 MHz survey. II. (Sevenster+ 1997)
J/A+A/376/997 : Galactic mass-losing AGB stars (Le Bertre+, 2001)
J/A+A/366/481 : ATCA/VLA OH 1612 MHz survey. III. (Sevenster+, 2001)
J/A+A/389/149 : EROS II periodic stars towards Gal. spiral arm (Derue+, 2002)
J/A+A/403/943 : Mass-loss rates of galactic AGB stars (Le Bertre+, 2003)
J/ApJS/155/595 : OH maser IRAS and MSX observations (Deacon+, 2004)
J/PASJ/56/765 : SiO maser survey of IRAS sources (Deguchi+, 2004)
J/MNRAS/364/117 : OGLE2 Mira variables in the Gal. bulge (Matsunaga+, 2005)
J/A+A/446/773 : GLMP sample of galactic OH/IR stars (Jimenez-Esteban+, 2006)
J/A+A/458/173 : Optical spectroscopy of 253 IRAS sources (Suarez+, 2006)
J/ApJ/658/1096 : H2O maser classification (Deacon+, 2007)
J/A+A/465/865 : OH masers towards high mass protostellar object (Edris+, 2007)
J/A+A/469/799 : Torun cat. of post-AGB and related objects (Szczerba+, 2007)
J/AJ/136/2391 : GLIMPSE Extended Green Objects catalog (Cyganowski+, 2008)
J/AJ/136/2413 : Galactic midplane Spitzer red sources (Robitaille+, 2008)
J/MNRAS/416/1764 : H2O Southern Galactic Plane Survey (HOPS) (Walsh+, 2011)
J/other/OEJV/149 : New Miras in Galactic Bulge (Hummerich+ 2012)
J/ApJS/208/11 : Red MSX Source Survey: massive protostars (Lumsden+, 2013)
J/AcA/63/21 : VI light curves of Galactic LPVs (Soszynski+, 2013)
J/MNRAS/442/2240 : Accurate water maser positions from HOPS (Walsh+, 2014)
J/ApJS/227/26 : ATCA obs. of ground-state OH masers (Qiao+, 2016)
J/ApJS/239/15 : Accurate OH maser positions. II. The GC. (Qiao+, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Fig [1/362] Figure number; column added by CDS
5- 24 A20 --- Name Maser spot identifier (1)
26- 27 I2 h RAh [16/18] Hour of Right Ascension (J2000)
29- 30 I2 min RAm Minute of Right Ascension (J2000)
32- 37 F6.3 s RAs Second of Right Ascension (J2000)
39 A1 --- DE- [-] Sign of the Declination (J2000)
40- 41 I2 deg DEd [19/51] Degree of Declination (J2000)
43- 44 I2 arcmin DEm Arcminute of Declination (J2000)
46- 50 F5.2 arcsec DEs Arcsecond of Declination (J2000)
52- 57 F6.2 Jy PFlux [0.14/220] Peak flux density
59- 64 F6.2 Jy.km/s IFlux [0.05/542] Integrated flux density
66- 71 F6.1 km/s PkVel [-233.1/237] Peak velocity
73- 78 F6.1 km/s minVel [-233.3/237] Minimum velocity
80- 85 F6.1 km/s maxVel [-233/238] Maximum velocity
87- 90 F4.2 arcsec ebmin [0.03/5] Relative minor axis uncertainty
92- 95 F4.2 arcsec eamaj [0.05/9.5] Relative major axis uncertainty
97-101 F5.1 deg ePA [-57.3/29.2] Position angle
103-104 A2 --- Assoc Astrophysical identification of each maser
site (2)
105 A1 --- --- [-]
106-108 A3 --- n_Assoc Reason for the identification (3)
110-112 A3 --- Ref Reference (4)
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Note (1): Obtained from the Galactic coordinates of the accurate positions,
followed by the frequency of the detected OH transition and a letter
to denote the sequence of maser spots in the spectrum.
Note (2): The astrophysical identification of each maser site as follows:
SF = star formation (418 occurrences);
ES = evolved star (727 occurrences);
SN = supernova remnants (11 occurrences).
U = Maser sites with unknown associations (80 occurrences).
Note (3): Reason for the astrophysical identification (see Section 3.2)
as follows:
MMB = association with a class II methanol maser site which indicates
the presence of a high-mass star formation region
(Breen+ 2013MNRAS.435..524B 2013MNRAS.435..524B), based on the
Methanol Multibeam survey (Caswell+ 2010MNRAS.404.1029C 2010MNRAS.404.1029C, VIII/96 ;
Green+ 2010MNRAS.409..913G 2010MNRAS.409..913G and Caswell+ 2011MNRAS.417.1964C 2011MNRAS.417.1964C)
HOP = based on HOPS identification (Walsh+ 2014, J/MNRAS/442/2240);
RMS = based on the RMS identifications (Lumsden+ 2013, J/ApJS/208/11);
VIS = based on a visual check of GLIMPSE or WISE images together
with spectral profiles or based on identifications found
through a search of SIMBAD;
BER = Le Bertre+ (2001, J/A+A/376/997);
DAV = David+ (1993, J/A+A/277/453);
DER = Derue+ (2002, J/A+A/389/149);
KWO = Kwok+ (1997ApJS..112...55K 1997ApJS..112...55K);
LIA = te Lintel Hekkert+ (1989A&AS...78..399T 1989A&AS...78..399T);
LIB = te Lintel Hekkert+ (1991, J/A+AS/90/327);
MAT = Matsunaga+ (2005, J/MNRAS/364/117);
SAM = Samus+ (2009yCat....102025S 2009yCat....102025S, B/gcvs);
SAB = Samus+ (2017ARep...61...80S 2017ARep...61...80S, B/gcvs);
SEA = Sevenster+ (1997, J/A+AS/122/79);
SEB = Sevenster+ (1997, J/A+AS/124/509);
SEC = Sevenster+ (2001, J/A+A/366/481);
SOS = Soszynski+ (2013, J/AcA/63/21);
SUA = Suarez+ (2006, J/A+A/458/173);
ZIJ = Zijlstra+ (2001MNRAS.322..280Z 2001MNRAS.322..280Z);
CAS = Caswell (1998MNRAS.297..215C 1998MNRAS.297..215C);
CA4 = Caswell (2004MNRAS.349...99C 2004MNRAS.349...99C);
COH = Cohen+ (1995MNRAS.274..808C 1995MNRAS.274..808C);
GOE = Goedhart+ (2000MNRAS.315..316G 2000MNRAS.315..316G);
PER = Persson+ (1976ApJ...208..753P 1976ApJ...208..753P);
CLA = Claussen+ (1997ApJ...489..143C 1997ApJ...489..143C);
FRA = Frail+ (1996AJ....111.1651F 1996AJ....111.1651F);
KOR = Koralesky+ (1998AJ....116.1323K 1998AJ....116.1323K);
HAS = Hashimoto (1994, J/A+AS/107/445).
Note (4): The maser sites with references to previous observations as follows:
BOW = Bowers & Knapp (1989ApJ...347..325B 1989ApJ...347..325B),
CA4 = Caswell (2004MNRAS.349...99C 2004MNRAS.349...99C),
CAS = Caswell (1998MNRAS.297..215C 1998MNRAS.297..215C),
CLA = Claussen+ (1997ApJ...489..143C 1997ApJ...489..143C),
DAV = David+ (1993, J/A+A/277/453),
FRA = Frail+ (1996AJ....111.1651F 1996AJ....111.1651F),
KOR = Koralesky+ (1998AJ....116.1323K 1998AJ....116.1323K),
LIA = te Lintel Hekkert+ (1989A&AS...78..399T 1989A&AS...78..399T),
LIB = te Lintel Hekkert+ (1991, J/A+AS/90/327),
LIC = te Lintel Hekkert (1991A&A...248..209T 1991A&A...248..209T),
OGB = Ogbodo+ (2020MNRAS.493..199O 2020MNRAS.493..199O),
SEA = Sevenster+ (1997, J/A+AS/122/79),
SEB = Sevenster+ (1997, J/A+AS/124/509),
SEC = Sevenster+ (2001, J/A+A/366/481),
ZIJ = Zijlstra+ (2001MNRAS.322..280Z 2001MNRAS.322..280Z).
N = New: maser sites discovered by this SPLASH survey (326 occurrences).
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History:
From electronic version of the journal
References:
Qiao et al. Paper I. 2016ApJS..227...26Q 2016ApJS..227...26Q cat. J/ApJS/227/26
Qiao et al. Paper II. 2018ApJS..239...15Q 2018ApJS..239...15Q Cat. J/ApJS/239/15
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 15-Apr-2020