J/other/NewA/54.30 NLS1s 2MASS and WISE photometry (Chen+, 2017)
Infrared photometric study of SDSS selected narrow line Seyfert 1 galaxies.
Chen P.S., Liu J.Y., Shan H.G.
<New Astron., 54, 30-37 (2017)>
=2017NewA...54...30C 2017NewA...54...30C (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, optical ; Galaxies, IR ; Photometry, infrared
Keywords: galaxies: photometry - galaxies: Seyfert - infrared: galaxies
Abstract:
The infrared photometric study of SDSS selected Narrow Line Seyfert 1
Galaxies (NLS1s) is presented in this paper. We have made
cross-identifications for such NLS1s with 2MASS and WISE observations.
Finally 992 NLS1s have 2MASS and WISE counterparts. Comparisons of
NLS1s with the Broad Line Seyfert 1 (BLS1s) and Seyfert 2 galaxies are
made. It is shown that from 1um to 5um NLS1s are redder than BLS1s
and Seyfert 2 galaxies possibly due to the richer dust environment in
NLS1 nuclei or to the orientation effect while in the longer
wavelengths those three kinds of sources have quite similar behavior
indicative of radiation mainly from the similar warm starburst-related
dust and the related AGN dust.
In addition, relations between infrared colors and related (to
Hβ) strengths of some important lines are also investigated. The
results show that the related strengths of [FeII] 4570Å are
positively correlated with infrared colors in the 1-5um region, but
negatively correlated with infrared colors in the 12-22um region; the
related strength of [OIII] 5007Å are negatively correlated with
infrared colors in the 1-5um region, but positively correlated with
infrared colors in the 12-22um region; the related strength of
[NII]6583Å are also negatively correlated with infrared colors in
the 1-5um region, but positively correlated with infrared colors in
the 12-22um region. Therefore it is indicated that the behavior of
[FeII] 4570Å is just opposed to that for [OIII] 5007Å and [NII]
6583Å This result may be caused by different origins of such lines.
Description:
In 2006 Zhou et al. (2006, Cat. J/ApJS/166/128) published the largest
sample of NLS1s selected from SDSS observations. In this sample 2011
NLS1s are presented. This sample is our main sample.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 127 992 2MASS and WISE observations of SDSS selected
NLS1s in this paper
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
J/ApJS/166/128 : Narrow line Seyfert 1 galaxies from SDSS-DR3 (Zhou+, 2006)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- No Identification number
6- 7 I2 h RAh Right ascension (J2000) (1)
9- 10 I2 min RAm Right ascension (J2000) (1)
12- 16 F5.2 s RAs Right ascension (J2000) (1)
18 A1 --- DE- Declination sign (J2000) (1)
19- 20 I2 deg DEd Declination (J2000) (1)
22- 23 I2 arcmin DEm Declination (J2000) (1)
25- 28 F4.1 arcsec DEs Declination (J2000) (1)
30- 37 F8.6 --- z Redshift
39- 44 F6.3 mag Jmag 2MASS J magnitude
46- 50 F5.3 mag e_Jmag ?=- rms uncertainty on Jmag
52- 57 F6.3 mag Hmag 2MASS H magnitude
59- 63 F5.3 mag e_Hmag ?=- rms uncertainty on Hmag
65- 70 F6.3 mag Kmag 2MASS K magnitude
72- 76 F5.3 mag e_Kmag ?=- rms uncertainty on Kmag
78- 83 F6.3 mag W1mag WISE W1 magnitude
85- 89 F5.3 mag e_W1mag rms uncertainty on W1mag
91- 96 F6.3 mag W2mag WISE W2 magnitude
98-102 F5.3 mag e_W2mag rms uncertainty on W2mag
104-109 F6.3 mag W3mag WISE W3 magnitude
111-115 F5.3 mag e_W3mag ?=- rms uncertainty on W3mag
117-121 F5.3 mag W4mag WISE W4 magnitude
123-127 F5.3 mag e_W4mag ?=- rms uncertainty on W4mag
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Note (1): Positions from Zhou et al. (2006, Cat. J/ApJS/166/128).
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 08-Nov-2017