J/ApJ/808/185 NuSTAR surveys: COSMOS catalog (Civano+, 2015)
The NuSTAR extragalactic surveys: overview and catalog from the COSMOS field.
Civano F., Hickox R.C., Puccetti S., Comastri A., Mullaney J.R.,
Zappacosta L., Lamassa S.M., Aird J., Alexander D.M., Ballantyne D.R.,
Bauer F.E., Brandt W.N., Boggs S.E., Christensen F.E., Craig W.W.,
Del-Moro A., Elvis M., Forster K., Gandhi P., Grefenstette B.W.,
Hailey C.J., Harrison F.A., Lansbury G.B., Luo B., Madsen K., Saez C.,
Stern D., Treister E., Urry M.C., Wik D.R., Zhang W.
<Astrophys. J., 808, 185 (2015)>
=2015ApJ...808..185C 2015ApJ...808..185C (SIMBAD/NED BibCode)
ADC_Keywords: X-ray sources ; Redshifts ; Cross identifications ; Surveys
Keywords: galaxies: nuclei; X-rays: general
Abstract:
To provide the census of the sources contributing to the X-ray
background peak above 10keV, Nuclear Spectroscopic Telescope Array
(NuSTAR) is performing extragalactic surveys using a three-tier
"wedding cake" approach. We present the NuSTAR survey of the COSMOS
field, the medium sensitivity, and medium area tier, covering
1.7deg2 and overlapping with both Chandra and XMM-Newton data. This
survey consists of 121 observations for a total exposure of ∼3Ms. To
fully exploit these data, we developed a new detection strategy,
carefully tested through extensive simulations. The survey sensitivity
at 20% completeness is 5.9, 2.9, and 6.4x10-14erg/cm2/s in the
3-24, 3-8, and 8-24keV bands, respectively. By combining detections in
3 bands, we have a sample of 91 NuSTAR sources with
1042-1045.5erg/cm2/s luminosities and redshift z=0.04-2.5.
Thirty-two sources are detected in the 8-24keV band with fluxes ∼100
times fainter than sources detected by Swift-BAT. Of the 91
detections, all but 4 are associated with a Chandra and/or XMM-Newton
point-like counterpart. One source is associated with an extended
lower energy X-ray source. We present the X-ray (hardness ratio and
luminosity) and optical-to-X-ray properties. The observed fraction of
candidate Compton-thick active galactic nuclei measured from the
hardness ratio is between 13%-20%. We discuss the spectral properties
of NuSTAR J100259+0220.6 (ID 330) at z=0.044, with the highest
hardness ratio in the entire sample. The measured column density
exceeds 1024/cm2, implying the source is Compton-thick. This source
was not previously recognized as such without the >10keV data.
Description:
The Nuclear Spectroscopic Telescope Array (NuSTAR) survey of the
COSMOS field consists of 121 overlapping fields with each tile
(12'x12') shifted by half a field, forming an 11x11 grid. This
strategy of half shifts, used also in C-COSMOS and in the Chandra
COSMOS Legacy survey, results in a relatively uniform exposure over
the observed area. The NuSTAR COSMOS survey was performed during three
different periods in 2013 and 2014: the first 34 observations were
taken between the end of 2012 December and the end of 2013 January,
the next 30 observations were taken during the months of 2013 April
and May, and the last 57 observations were taken between 2013 December
and 2014 February.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 443 91 COSMOS NuSTAR catalog
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See also:
B/chandra : The Chandra Archive Log (CXC, 1999-2014)
VIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+ 2005)
IX/15 : Einstein EMSS Survey (Gioia+ 1990, Stocke+ 1991)
J/ApJ/808/184 : NuSTAR surveys: ECDF-S catalog (Mullaney+, 2015)
J/MNRAS/436/3581 : X-ray observations of Stripe 82 (LaMassa+, 2013)
J/ApJS/207/19 : Swift-BAT 2004-2010 hard X-ray survey (Baumgartner+, 2013)
J/ApJ/763/111 : X-ray spectral analysis of Swift/BAT AGNs (Vasudevan+, 2013)
J/ApJS/202/6 : XDEEP2 survey catalog (Goulding+, 2012)
J/ApJS/201/30 : The Chandra COSMOS survey. III. (Civano+, 2012)
J/ApJ/749/21 : AGNs detected by 60 month Swift/BAT survey (Ajello+, 2012)
J/ApJ/742/61 : AGN photometric redshifts from XMM- & C-COSMOS (Salvato+ 2011)
J/ApJS/195/10 : The CDF-S survey: 4Ms source catalogs (Xue+, 2011)
J/MNRAS/413/1206 : XMM survey of 12um selected galaxies (Brightman+, 2011)
J/ApJ/728/58 : Swift-BAT survey of AGNs (Burlon+, 2011)
J/A+A/523/A61 : Hard X-ray sources INTEGRAL all-sky survey (Krivonos+, 2010)
J/A+A/512/A34 : XMM-COSMOS Type 1 AGNs (Lusso+, 2010)
J/ApJ/716/348 : The XMM-Newton survey of the COSMOS field (Brusa+, 2010)
J/AJ/139/2525 : UNAM-KIAS cat. of isolated galaxies (Hernandez-Toledo+, 2010)
J/ApJS/184/158 : Chandra COSMOS survey I. (Elvis+, 2009)
J/A+A/497/635 : XMM-Newton wide-field survey in COSMOS (Cappelluti+, 2009)
J/ApJ/696/1195 : COSMOS AGN spectroscopic survey. I. (Trump+, 2009)
J/ApJ/693/8 : High-redshift QSOs in the COSMOS survey (Brusa+, 2009)
J/ApJS/180/102 : AEGIS-X: Chandra deep survey (Laird+, 2009)
J/ApJ/681/113 : Swift BAT survey of AGNs (Tueller+, 2008)
J/A+A/475/775 : Hard X-ray sources INTEGRAL all-sky survey (Krivonos+, 2007)
J/ApJS/172/368 : XMM-Newton survey in COSMOS field. IV. (Mainieri+, 2007)
J/ApJS/172/182 : XMM Clusters of galaxies in COSMOS field (Finoguenov+ 2007)
J/ApJS/172/29 : XMM-Newton survey in COSMOS field. I. (Hasinger+, 2007)
J/A+A/466/31 : The HELLAS2XMM survey. VIII (Cocchia+, 2007)
J/ApJS/165/19 : SEXSI catalog. III (Eckart+, 2006)
J/A+A/423/469 : AGNs from RXTE 3-20keV All-Sky Survey (Sazonov+, 2004)
J/A+A/409/79 : HELLAS2XMM survey. IV. (Fiore+, 2003)
J/ApJ/554/742 : Chandra Deep Survey of the HDF-N (Hornschemeier+, 2001)
J/A+A/371/833 : ROSAT Ultra Deep Survey (Lehmann+, 2001)
J/PASP/111/438 : Updated Zwicky catalog (UZC) (Falco+, 1999)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- --- [NuSTAR]
7- 20 A14 --- NuSTAR NuStar source name (JHHMMSS+DDMM.m) (1)
22- 24 I3 --- Seq [20/557] Source number (2)
26- 35 F10.6 deg RAdeg [149.5/151] Right Ascension (J2000)
37- 44 F8.6 deg DEdeg [1.5/3] Declination in decimal degrees (J2000)
46- 51 F6.2 --- D3-24 [8/417]?=-99 The 3-24keV band deblended DET_ML
53- 61 F9.2 s Exp3-24 The 3-24 keV band exposure time
63- 67 F5.1 ct T3-24 [75/547]?=-99 Total 3-24 keV band counts (3)
69- 74 F6.2 ct T3-24db ?=-99 Deblended background 3-24keV band
counts (3)
76- 81 F6.2 ct T3-24ndb [37/160] Not deblended background 3-24keV band
counts (3)
83- 88 F6.2 ct N3-24 [37/430] Net 3-24 keV band counts (3)(4)
90- 94 F5.2 ct e_N3-24 [11/27] Error in N3-24 computed using
Gehrels statistic
96-104 E9.2 ct/s CR3-24 [-0.002/0.004] The 3-24keV band
count rate (3)(5)
106-114 E9.2 mW/m2 F3-24 Aperture corrected 3-24 keV band
flux; erg/s/cm2 (5)
116-124 E9.2 mW/m2 e_F3-24 ?=-99 Error in F3-24 (6)
126-131 F6.2 --- D3-8 [7/327]?=-99 The 3-8 keV band deblended DET_ML
133-141 F9.2 s Exp3-8 The 3-8 keV band exposure time
143-147 F5.1 ct T3-8 [38/331]?=-99 Total 3-8 keV band counts (3)
149-154 F6.2 ct T3-8db ?=-99 Deblended background 3-8keV band
counts (3)
156-160 F5.2 ct T3-8ndb [16/75] Not deblended background 3-8keV
band counts (3)
162-167 F6.2 ct N3-8 [26/277] Net 3-8 keV band counts (3)(4)
169-173 F5.2 ct e_N3-8 [8/21] Error in N3-8 computed using
Gehrels statistic
175-183 E9.2 ct/s CR3-8 [-0.0009/0.003] The 3-8keV band
count rate (3)(5)
185-193 E9.2 mW/m2 F3-8 Aperture corrected 3-8 keV band
flux; erg/s/cm2 (5)
195-203 E9.2 mW/m2 e_F3-8 ?=-99 Error in F3-2 (6)
205-210 F6.2 --- D8-24 [4/145]?=-99 The 8-24 keV band deblended DET_ML
212-220 F9.2 s Exp8-24 The 8-24 keV band exposure time
222-226 F5.1 ct T8-24 [40/247]?=-99 Total 8-24 keV band counts (3)
228-233 F6.2 ct T8-24db [22/84]?=-99 Deblended background 8-24keV band
counts (3)
235-239 F5.2 ct T8-24ndb [20/84] Not deblended background 8-24keV band
counts (3)
241-246 F6.2 ct N8-24 [26/180] Net 8-24 keV band counts (3)(4)
248-252 F5.2 ct e_N8-24 [8/19] Error in N8-24 computed using
Gehrels statistic
254-262 E9.2 ct/s CR8-24 [-0.002/0.002] The 8-24keV band count
rate (3)(5)
264-272 E9.2 mW/m2 F8-24 Aperture corrected 8-24 keV band
flux; erg/s/cm2 (5)
274-282 E9.2 mW/m2 e_F8-24 ?=-99 Error in F8-24 (6)
284-288 F5.2 --- HR Hardness ratio (7)(8)
290-294 F5.2 --- b_HR Lower bound on HR
296-300 F5.2 --- B_HR Upper bound on HR
302-305 F4.2 --- BR [0/7] Band ratio (7)
307-310 F4.2 --- b_BR Lower bound on BR
312-316 F5.2 --- B_BR Upper bound on BR
318-323 I6 --- Chandra [42/103635]?=-99 C-COSMOS identification
number; see Elvis et al. 2009, J/ApJS/184/158
325-329 I5 --- XMMC [1/70136]?=-99 XMM-COSMOS identification
number; Brusa et al. 2010, J/ApJ/716/348
331-340 F10.6 deg RAXdeg ?=-99 X-ray Right Ascension in decimal
degrees (J2000) (9)
342-351 F10.6 deg DEXdeg ?=-99 X-ray Declination in decimal
degrees (J2000) (9)
353-361 E9.2 mW/m2 F0.5-2 ?=-99 Aperture corrected 0.5-2 keV band
flux; erg/s/cm2 (10)
363-371 E9.2 mW/m2 F2-10 ?=-99 The 2-10 keV band flux (10)
373-379 F7.3 --- zsp [0.04/2.5]?=-99 Spectroscopic redshift (11)
381-383 I3 --- n_zsp ?=-99 Classification type for zsp (12)
385-391 F7.3 --- zph [0.05/2.5]?=-99 Photometric redshift (11)
393-395 I3 --- n_zph ?=-99 Classification type for zph (13)
397-402 F6.2 arcmin XSep [1/26]?=-99 NuSTAR position separation (6)(11)
404-411 F8.2 Mpc Dzsp ?=-99 Luminosity distance using zsp
413-420 F8.2 Mpc Dzph ?=-99 Luminosity distance using zph
422-427 F6.2 [10-7W] logL3-24 ?=-99 Log 3-24 keV band luminosity; erg/s
429-434 F6.2 [10-7W] logL3-8 ?=-99 Log 3-8 keV band luminosity; erg/s
436-441 F6.2 [10-7W] logL8-24 ?=-99 Log 8-24 keV band luminosity; erg/s
443 I1 --- Flag Multiple low energy counterpart flag (0:False;
or 1:True)
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Note (1): Following the standard IAU convention with the prefix "NuSTAR".
Note (2): Sources are listed in order of detection: first those detected in
the 3-24 keV band, followed by those detected in the 3-8 keV band
only and then by those detected in the 8-24 keV band only.
Note (3): In a 20' radius aperture.
Note (4): Deblended if detected or 3σ upper limit.
Note (5): The 90% confidence upper limit if negative for undetected sources.
Note (6):
-99 = an upper limit.
Note (7): Using BEHR and counts in a 20" radius aperture.
Note (8): HR=(H-S)/(H+S) where H and S are the number of net counts in
the 8-24 keV and 3-8 keV bands, respectively.
Note (9): Chandra or XMM-Newton X-ray associated source position.
Note (10): From C-COSMOS and if not from XMM-COSMOS.
Note (11): Of the C-COSMOS or XMM-COSMOS counterpart.
Note (12): Classification type for zsp as follows:
1 = broad line AGN;
2 = narrow emission line.
Note (13): Classification type for zph as follows:
1 = unobscured AGN;
2 = obscured AGN, see Civano et al. 2012 for details.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 04-Dec-2015