2000A&A...360..107D

Query : 2000A&A...360..107D

2000A&A...360..107D - Astronomy and Astrophysics, volume 360107-110 (2000/8-1)

A new narrow-line Seyfert 1 galaxy: RX J1236.9+2656.

DEWANGAN G.C., SINGH K.P., SZKODY P. and HOARD D.W.

Abstract (from CDS):

We report identification of a narrow-line Seyfert 1 galaxy RX J1236.9+2656. X-ray emission from the NLS1 galaxy undergoes long-term variability with 0.1-2.0 keV flux changing by a factor of ∼2 within ∼3yr. The ROSAT PSPC spectrum of RX J1236.9+2656 is well represented by a power-law of Γ_X=3.7_–0.3^+0.5 absorbed by matter in our own Galaxy (N_H=1.33x10²⁰cm^–2 ). Intrinsic soft X-ray luminosity of the NLS1 galaxy is estimated to be ∼1.5x10⁴³erg/s in the energy band of 0.1-2.0keV. The optical spectrum of RX J1236.9+2656 is typical of NLS1 galaxies and shows narrow Balmer emission lines (1100km/s<FWHM<1700km/s) of Hβ, Hα, and forbidden lines of [O III] and [N II]. Fe II multiplets, usually present in optical spectra of NLS1 galaxies, are also detected in RX J1236.9+2656.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: individual: RX J1236.9+2656 - galaxies: nuclei - X-rays: galaxies

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	CAIRNS J123657.00+265650.0	Sy1	12 36 57.2096856648	+26 57 01.263724164		18.21	17.93			~	18	0

Query : 2000A&A...360..107D

Basic data :

CAIRNS J123657.00+265650.0 -- Seyfert 1 Galaxy

AGN ([VV2003c],[VV2006c],...), Sy1 (2010A&A), QSO (2018AJ), X (RX,1RXS), Opt (SDSS,LAMOST), GiC (CAIRNS), * (Gaia)

12 36 57.2096856648 +26 57 01.263724164 (Optical) [ 0.0979 0.0608 90 ] A 2020yCat.1350....0G

12 34 28.7551211550 +27 13 31.195025019 [ 0.0979 0.0608 90 ]

215.2647043360273 +86.7699114214661 [ 0.0979 0.0608 90 ]

0.067 -0.077 [0.120 0.119 90] A 2020yCat.1350....0G

V(km/s) 60542 [12] / z(emission) 0.22723 [0] / cz 68121.8 [12] (Opt) C 2018A&A...620A.118N

B 18.21 [~] D 2010A&A...518A..10V

V 17.93 [~] D 2010A&A...518A..10V

G 17.888430 [0.003196] C 2020yCat.1350....0G

u (AB) 17.7979 [0.0212] C 2020ApJS..250....8L

g (AB) 17.7290 [0.0207] C 2020ApJS..250....8L

r (AB) 17.5672 [0.0131] C 2020ApJS..250....8L

i (AB) 17.3887 [0.0187] C 2020ApJS..250....8L

z (AB) 17.9073 [0.0637] C 2020ApJS..250....8L

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`SDSS J123657.20+265701.2`	`LAMOST J123657.20+265701.3`	`SDSS J123657.21+265701.2`	`[VV2010c] J123657.2+265701`
`CAIRNS J123657.00+265650.0`	`RX J1236.9+2656`	`[VV2003c] J123657.0+265650`	`Gaia DR3 3962337338944206208`
`LAMOST J123657.21+265701.3`	`1RXS J123657.6+265702`	`[VV2006c] J123657.0+265650`	`Gaia DR2 3962337338944206208`

References (18 between 1850 and 2026) (Total 18)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : CAIRNS J123657.00+265650.0

Link by name to the catalogue in VizieR :

SDSS J123657.20+265701.2 1RXS J123657.6+265702 SDSS J123657.21+265701.2 Gaia DR3 3962337338944206208 Gaia DR2 3962337338944206208

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