J/ApJS/194/22 Magellanic Quasars Survey: QSOs behind SMC (Kozlowski+, 2011)
The Magellanic Quasars Survey.
I. Doubling the number of known active galactic nuclei behind the
Small Magellanic Cloud.
Kozlowski S., Kochanek C. S., Udalski A.
<Astrophys. J. Suppl. Ser. 194, 22 (2011)>
=2011ApJS..194...22K 2011ApJS..194...22K
ADC_Keywords: Magellanic Clouds ; Active gal. nuclei ; QSOs
Keywords: galaxies: active - Magellanic Clouds - quasars: general
Abstract:
We report the spectroscopic confirmation of 29 new, 12 plausible, and
three previously known quasars behind the central ∼1.5deg2 region of
the Small Magellanic Cloud (SMC). These were identified in a single
2df/AAOmega observation on the Anglo-Australian Telescope of 268
candidates selected primarily based on their mid-IR colors, along with
a smaller number of optically variable sources in OGLE-II close to
known X-ray sources.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 131 44 29 new, 12 plausible, and 3 previously known
quasars behind the SMC
table2.dat 91 224 Parameters of 224 remaining objects with spectra
--------------------------------------------------------------------------------
See also:
J/A+AS/142/41 : SMC X-ray sources ROSAT PSPC catalogue (Haberl+, 2000)
J/AJ/136/18 : LMC SAGE. New candidate YSOs (Whitney+, 2008)
J/ApJ/746/27 : MQS. II. AGNs behind LMC (Kozlowski+, 2012)
J/ApJ/775/92 : MQS. III. AGN behind LMC and SMC (Kozlowski+, 2013)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- n_Name [NPK] New, Plausible or Known quasars (1)
3- 21 A19 --- Name Object name (JHHMMSS.ss+DDMMSS.s)
23- 24 I2 h RAh Right ascension (J2000)
26- 27 I2 min RAm Right ascension (J2000)
29- 33 F5.2 s RAs Right ascension (J2000)
35 A1 --- DE- Declination sign (J2000)
36- 37 I2 deg DEd Declination (J2000)
39- 40 I2 arcmin DEm Declination (J2000)
42- 46 F5.2 arcsec DEs Declination (J2000)
48- 52 F5.2 mag Vmag V magnitude
54- 58 F5.2 mag Imag I magnitude
60- 64 F5.3 --- z ? Spectroscopic redshift
65 A1 --- u_z [?] ? for unknown redshift
67- 77 A11 --- OGLE OGLE-III identification (G1)
79- 85 A7 --- KK09 Kozlowski & Kochanek (2009ApJ...701..508K 2009ApJ...701..508K)
classification
87-122 A36 --- EmLines Emission lines
124-131 A8 --- Notes Notes (3)
--------------------------------------------------------------------------------
Note (1): Status as follows:
N = new spectroscopically confirmed quasars
P = plausible spectroscopically confirmed quasars
K = previously known quasars
Note (3): Notes as follows:
X = quasar with the X-ray counterpart (Haberl et al. 2000,
Cat. J/A+AS/142/41)
B1 = sources incorrectly classified as high mass X-ray binaries in
Shtykovskiy & Gilfanov (2005MNRAS.362..879S 2005MNRAS.362..879S)
B2 = sources incorrectly classified as high mass X-ray binaries in
Haberl & Pietsch (2004A&A...414..667H 2004A&A...414..667H)
Y = sources incorrectly classified as YSOs in Whitney et al. 2008,
Cat. J/AJ/136/18
V = sources variable in OGLE-II
D = quasar discovered by Dobrzycki et al. (2003AJ....125.1330D 2003AJ....125.1330D)
G = quasar discovered by Geha et al. (2003AJ....125....1G 2003AJ....125....1G)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 20 A20 --- Name Object name (JHHMMSS.ss+DDMMSS.s)
22- 23 I2 h RAh Hour of Right Ascension (J2000)
25- 26 I2 min RAm Minute of Right Ascension (J2000)
28- 32 F5.2 s RAs Second of Right Ascension (J2000)
34 A1 --- DE- Sign of the Declination (J2000)
35- 36 I2 deg DEd Degree of Declination (J2000)
38- 39 I2 arcmin DEm Arcminute of Declination (J2000)
41- 45 F5.2 arcsec DEs Arcsecond of Declination (J2000)
47- 52 F6.3 mag Vmag ?=99.999 The V band magnitude
54- 59 F6.3 mag Imag The I band magnitude
61- 74 A14 --- OGLE OGLE-III identification (G1)
76- 81 A6 --- KK09 Kozlowski & Kochanek (2009ApJ...701..508K 2009ApJ...701..508K)
classification
83- 91 A9 --- Note Additional note(s) (1)
--------------------------------------------------------------------------------
Note (1): Includes matches to Simbad objects within 3" radius, as follows:
Radio = radio source
PN = planetary nebula
YSO = young stellar object
X-ray = X-ray source
EclipsBin = eclipsing binary
none = no information on the nature of an object
--------------------------------------------------------------------------------
Global notes:
Note (G1): The OGLE-III ID format is smcXXX.Y.ZZZZZZ, where
* XXX is the field number,
* Y is the chip number, and
* ZZZZZZ is the source number (Udalski et al., 2008AcA....58..329U 2008AcA....58..329U,
ftp://sirius.astrouw.edu.pl/ogle/ogle3/maps/smc/ )
--------------------------------------------------------------------------------
History:
From electronic version of the journal
Acknowledgements:
Szymon Kozlowski, simkoz(at)astrouw.edu.pl
References:
Kozlowski et al. Paper II. 2012ApJ...746...27K 2012ApJ...746...27K, Cat. J/ApJ/746/27
Kozlowski et al. Paper III. 2013ApJ...775...92K 2013ApJ...775...92K, Cat. J/ApJ/775/92
(End) Szymon Kozlowski [Warsaw Uni. Obs.], Patricia Vannier [CDS] 23-May-2011