J/MNRAS/503/2583 Survey for z< 0.04 CLAGNs (Senarath+, 2021)
A systematic survey for z< 0.04 CLAGNs.
Senarath M.R., Brown M.J.I., Cluver M.E., Jarrett T.H., Wolf C., Ross N.P.,
Lucey J.R., Parkash V., Hon W.J.
<Mon. Not. R. Astron. Soc., 503, 2583-2597 (2021)>
=2021MNRAS.503.2583S 2021MNRAS.503.2583S (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei ; Photometry ; Optical ; Redshifts
Keywords: methods: observational - galaxies: active - galaxies: Seyfert
Abstract:
We have conducted a systematic survey for z<0.04 active Galactic
nuclei (AGNs) that may have changed spectral class over the past
decade. We use SkyMapper, Pan-STARRS and the Veron-Cetty & Veron
catalogue to search the entire sky for these 'changing-look' AGNs
(CLAGNs) using a variety of selection methods, where Pan-STARRS has a
coverage of 3π steradians (sky north of Declination -30°) and
SkyMapper has coverage of ∼21000∼deg2 (sky south of Declination
0°). We use small aperture photometry to measure how colour and
flux have changed over time, where a change may indicate a change in
spectral type. Optical colour and flux are used as a proxy for
changing Hα equivalent width, while WISE 3.4µm flux is used
to look for changes in the hot dust component. We have identified four
AGNs with varying spectra selected using our optical colour selection
method. Three AGNs were confirmed from recent observations with WiFeS
on the 2.3m telescope at Siding Spring and the other was identified
from archival spectra alone. From this, we identify two new CLAGNs;
NGC 1346 and 2MASX J20075129-1108346. We also recover Mrk 915 and Mrk
609, which are known to have varying spectra in the literature, but
they do not meet our specific criteria for CLAGNs.
Description:
We have conducted a systematic survey for CLAGNs by identifying
candidates using optical and IR photometry from SkyMapper, Pan-STARRS,
SDSS, and NEOWISE. Using SkyMapper, we select type 1s with r-i>0.53mag
and type 2s with r-i<0.35mag and using Pan-STARRS we select type 1s
with r-i>0.43mag and type 2s with r-i<0.25mag. We also select
candidates with optical r-band flux where type 1.8s, 1.9s and type 2s
had {DELTA}mr>0.2, and search for AGNs with variability in WISE
W1(3.4um) (type 1.8s, 1.9s and type 2s where {DELTA}W1>0.3mag).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 169 279 SkyMapper catalogue used to select CLAGN
candidates
table3.dat 128 537 Pan-STARRS (PS1) catalogue used to select CLAGN
candidates
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See also:
II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)
II/358 : SkyMapper Southern Sky Survey. DR1.1 (Wolf+, 2018)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 F9.5 deg RAdeg Right ascension (J2000)
11- 19 F9.5 deg DEdeg Declination (J2000)
21- 35 A15 --- Name Name
37- 41 F5.3 --- z Redshift
43- 45 F3.1 --- SpType VCV spectral type
47- 53 F7.4 mag rmagSM SkyMapper r magnitude (magapc05r)
55- 61 F7.4 mag imagSM SkyMapper i magnitude (magapc05i)
63- 69 F7.4 mag zmagSM SkyMapper z magnitude (magapc05z)
71- 75 I5 --- SDSS-mjd ?=0 SDSS MJD
77- 84 F8.5 mag rmagSDSS ?=0 SDSS r magnitude (fib_r)
86- 93 F8.5 mag imagSDSS ?=0 SDSS i magnitude (fib_i)
95-102 F8.5 mag zmagSDSS ?=0 SDSS z magnitude (fib_z)
104-114 F11.5 --- Pan3-mjd ?=0 Pan-STARRS MJD (1)
116-126 F11.8 mag rmagP ?=0 Pan-STARRS r magnitude (Pan_3r) (1)
128-138 F11.8 mag imagP ?=0 Pan-STARRS i magnitude (Pan_3i) (1)
141-151 F11.8 mag zmagP ?=0 Pan-STARRS z magnitude (Pan_3z) (1)
153 I1 --- Flag [0/2] Optical colour selection flag (2)
155 I1 --- SpNotes [0/5] CLAGN spectra flag (3)
157-180 A24 --- SpSources Spectral reference (4)
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Note (1): The Pan-STARRS photometry in this table has been measured by us using
the Pan-STARRS cutouts (where available) with a 3 arcsec diameter aperture
for the AGNs in our Skymapper catalogue.
Note (2): Optical colour selection flag as follows:
1 = possible narrowing spectra
2 = possible broadening spectra
Note (3): CLAGN spectra flag as follows:
0 = no archival spectra online
1 = varying in archival and/or WiFeS spectra
2 = only one archival spectrum found and no WiFeS
3 = two or more archival spectra, not varying in WiFeS and archival spectra
4 = no archival spectra found from the last 10yr, but shows signs of varying
before then
5 = no archival spectra found from the past 10yr, does not show signs of
varying before then
Note (4): Spectra references as follows:
0 = no data
1 = WiFeS
2 = 6dFGS
3 = SDSS
4 = S7
5 = BASS
6 = 2dFGRS
7 = Ho, Filippenko & Sargent (1995ApJS...98..477H 1995ApJS...98..477H, Cat. J/ApJS/98/477)
8 = MaNGA
9 = Fosbury et al. (1982MNRAS.201..991F 1982MNRAS.201..991F)
10 = Phillips, Charles & Baldwin (1983ApJ...266..485P 1983ApJ...266..485P)
11 = Kennicutt & Keel (1984ApJ...279L...5K 1984ApJ...279L...5K)
12 = Bergvall, Johansson & Olofsson (1986A&A...166...92B 1986A&A...166...92B)
13 = Veron-Cetty & Veron (1986A&AS...65..241V 1986A&AS...65..241V)
14 = Veron-Cetty & Veron (1986A&AS...66..335V 1986A&AS...66..335V)
15 = Kollatschny & Fricke (1987A&A...183....9K 1987A&A...183....9K)
16 = Maia et al. (1987AJ.....93..546M 1987AJ.....93..546M)
17 = Rudy, Cohen & Ake (1988ApJ...332..172R 1988ApJ...332..172R)
18 = Morris & Ward (1988MNRAS.230..639M 1988MNRAS.230..639M)
19 = Storchi Bergmann, Bica & Pastoriza (1990MNRAS.245..749S 1990MNRAS.245..749S)
20 = Winkler (1992MNRAS.257..677W 1992MNRAS.257..677W)
21 = de Grijp et al. (1992A&AS...96..389D 1992A&AS...96..389D, Cat. J/A+AS/96/389)
22 = Moran, Halpern & Helfand (1994ApJ...433L..65M 1994ApJ...433L..65M)
23 = Cruz-Gonzalez et al. (1994ApJS...94...47C 1994ApJS...94...47C)
24 = Goodrich (1995ApJ...440..141G 1995ApJ...440..141G)
25 = Maia et al. (1996A&AS..117..487M 1996A&AS..117..487M)
26 = Moran, Halpern & Helfand (1996ApJS..106..341M 1996ApJS..106..341M)
27 = Reimers, Koehler & Wisotzki (1996A&AS..115..235R 1996A&AS..115..235R, Cat. J/A+AS/115/235)
28 = Scarpa, Falomo & Pesce (1996A&AS..116..295S 1996A&AS..116..295S)
29 = Coziol et al. (1997AJ....113.1548C 1997AJ....113.1548C)
30 = Pietsch et al. (1998A&A...333...48P 1998A&A...333...48P)
31 = Fraquelli, Storchi-Bergmann & Binette (2000ApJ...532..867F 2000ApJ...532..867F)
32 = Jansen et al. (2000ApJS..126..331J 2000ApJS..126..331J, Cat. J/ApJS/126/331)
33 = Kewley et al. (2001ApJS..132...37K 2001ApJS..132...37K, Cat. J/ApJS/132/37)
34 = Reunanen, Kotilainen & Prieto (2003MNRAS.343..192R 2003MNRAS.343..192R)
35 = Marquez et al. (2004A&A...416..475M 2004A&A...416..475M, Cat. J/A+A/416/475)
36 = Georgantopoulos et al. (2004ApJ...614..634G 2004ApJ...614..634G)
37 = Masetti et al. (2006A&A...449.1139M 2006A&A...449.1139M)
38 = Masetti et al. (2006A&A...459...21M 2006A&A...459...21M)
39 = Moustakas & Kennicutt (2006ApJS..164...81M 2006ApJS..164...81M, Cat. J/ApJS/164/81)
40 = Ho & Kim (2009ApJS..184..398H 2009ApJS..184..398H)
41 = Trippe et al. (2010ApJ...725.1749T 2010ApJ...725.1749T)
42 = Dopita et al. (2014A&A...566A..41D 2014A&A...566A..41D, Cat. J/A+A/566/A41)
43 = Schmidt et al. (2016A&A...596A..95S 2016A&A...596A..95S, Cat. J/A+A/596/A95)
44 = Ramos Almeida et al. (2016MNRAS.461.1387R 2016MNRAS.461.1387R)
45 = Thomas et al. (2017ApJS..232...11T 2017ApJS..232...11T)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 F13.9 deg RAdeg Right ascension (J2000)
15- 27 F13.9 deg DEdeg Declination (J2000)
29- 43 A15 --- Name Name
45- 49 F5.3 --- z Redshift
51- 53 F3.1 --- SpType VCV spectral type
55- 61 F7.4 mag rmagP Pan-STARRS r magnitude (mag_r)
63- 69 F7.4 mag imagP Pan-STARRS i magnitude (mag_i)
71- 77 F7.4 mag zmagP Pan-STARRS z magnitude (mag_z)
79- 83 I5 --- SDSS-mjd ?=0 SDSS MJD
85- 92 F8.5 mag rmagSDSS ?=0 SDSS r magnitude (fib_r)
94-101 F8.5 mag imagSDSS ?=0 SDSS i magnitude (fib_i)
103-110 F8.5 mag zmagSDSS ?=0 SDSS z magnitude (fib_z)
112 I1 --- Flag [0/2] Optical colour selection flag (2)
114 I1 --- SpNotes [0/5] CLAGN spectra flag (3)
116-128 A13 --- SpSources Spectral reference (4)
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Note (2): Optical colour selection flag as follows:
1 = possible narrowing spectra
2 = possible broadening spectra
Note (3): CLAGN spectra flag as follows:
0 = no archival spectra online
1 = varying in archival and/or WiFeS spectra
2 = only one archival spectrum found and no WiFeS
3 = two or more archival spectra, not varying in WiFeS and archival spectra
4 = no archival spectra found from the last 10yr, but shows signs of varying
before then
5 = no archival spectra found from the past 10yr, does not show signs of
varying before then
Note (4): Spectra references as follows:
0 = no data
1 = WiFeS
2 = 6dFGS
3 = SDSS
4 = S7
5 = BASS
6 = 2dFGRS
7 = Ho et al. (1995ApJS...98..477H 1995ApJS...98..477H, Cat. J/ApJS/98/477)
8 = MaNGA
9 = MUSE
10 = Phillips et al. (1983ApJ...266..485P 1983ApJ...266..485P)
11 = Goodrich & Osterbrock (1983ApJ...269..416G 1983ApJ...269..416G)
12 = Penston & Perez (1984MNRAS.211p..33P 1984MNRAS.211p..33P)
13 = Osterbrock (1985PASP...97...25O 1985PASP...97...25O)
14 = Bergvall et al. (1986A&A...166...92B 1986A&A...166...92B)
15 = Veron-Cetty & Veron (1986A&AS...65..241V 1986A&AS...65..241V)
16 = Rudy et al. (1988ApJ...332..172R 1988ApJ...332..172R)
17 = Morris & Ward (1988MNRAS.230..639M 1988MNRAS.230..639M)
18 = Sabbadin et al. (1989ApJ...347L...5S 1989ApJ...347L...5S)
19 = Gregory et al. (1991AJ....102.1977G 1991AJ....102.1977G)
20 = Kennicutt (1992ApJS...79..255K 1992ApJS...79..255K, Cat. VII/141)
21 = Tran, Miller & Kay (1992ApJ...397..452T 1992ApJ...397..452T)
22 = de Grijp et al. (1992A&AS...96..389D 1992A&AS...96..389D, Cat. J/A+AS/96/389)
23 = Durret (1994A&AS..105...57D 1994A&AS..105...57D)
24 = Kim et al. (1995ApJS...98..129K 1995ApJS...98..129K)
25 = Goodrich (1995ApJ...440..141G 1995ApJ...440..141G)
26 = Moran et al. (1996ApJS..106..341M 1996ApJS..106..341M)
27 = Owen, Ledlow & Keel (1996AJ....111...53O 1996AJ....111...53O)
28 = Scarpa et al. (1996A&AS..116..295S 1996A&AS..116..295S)
29 = Coziol et al. (1997AJ....113.1548C 1997AJ....113.1548C)
30 = Pietsch et al. (1998A&A...333...48P 1998A&A...333...48P)
31 = Wei et al. (1999A&AS..139..575W 1999A&AS..139..575W, Cat. J/A+AS/139/575)
32 = Goncalves, Veron-Cetty & Veron (1999A&AS..135..437G 1999A&AS..135..437G, Cat. J/A+AS/135/437)
33 = White et al. (2000ApJS..126..133W 2000ApJS..126..133W, Cat. J/ApJS/126/133)
34 = Falco et al., 1999PASP..111..438F 1999PASP..111..438F, Cat. J/PASP/111/438)
35 = Reichardt, Jimenez & Heavens (2001MNRAS.327..849R 2001MNRAS.327..849R)
36 = Stepanian et al. (2002AJ....124.1283S 2002AJ....124.1283S, Cat. J/AJ/124/1283)
37 = Rossa et al. (2006AJ....132.1074R 2006AJ....132.1074R)
38 = Moustakas & Kennicutt (2006ApJS..164...81M 2006ApJS..164...81M, Cat. J/ApJS/164/81)
39 = Lira et al. (2007MNRAS.382.1552L 2007MNRAS.382.1552L, Cat. J/MNRAS/382/1552)
40 = Buttiglione et al. (2009A&A...495.1033B 2009A&A...495.1033B)
41 = Stoklasova et al. (2009A&A...500.1287S 2009A&A...500.1287S)
42 = Tsalmantza et al. (2009A&A...504.1071T 2009A&A...504.1071T)
43 = Trippe et al. (2010ApJ...725.1749T 2010ApJ...725.1749T)
44 = Gavazzi et al. (2013A&A...558A..68G 2013A&A...558A..68G, Cat. J/A+A/558/A68)
45 = Barth et al. (2015ApJS..217...26B 2015ApJS..217...26B, Cat. J/ApJS/217/26)
46 = Dopita et al. (2015ApJS..217...12D 2015ApJS..217...12D, Cat. J/ApJS/217/12)
47 = Schmidt et al. (2016A&A...596A..95S 2016A&A...596A..95S, Cat. J/A+A/596/A95)
48 = Ramos Almeida et al. (2016MNRAS.461.1387R 2016MNRAS.461.1387R)
49 = Thomas et al. (2017ApJS..232...11T 2017ApJS..232...11T)
50 = Greenawalt, Walterbos & Braun (1997ApJ...483..666G 1997ApJ...483..666G)
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(End) Patricia Vannier [CDS] 18-Jan-2024