2010A&A...517L...8R

Query : 2010A&A...517L...8R

2010A&A...517L...8R - Astronomy and Astrophysics, volume 517L8-8 (2010/7-1)

Hanny's Voorwerp. Evidence of AGN activity and a nuclear starburst in the central regions of IC 2497.

RAMPADARATH H., GARRETT M.A., JOZSA G.I.G., MUXLOW T., OOSTERLOO T.A., PARAGI Z., BESWICK R., VAN ARKEL H., KEEL W.C. and SCHAWINSKI K.

Abstract (from CDS):

We present high- and intermediate resolution radio observations of the central region in the spiral galaxy IC 2497, performed using the European VLBI Network (EVN) at 18cm, and the Multi-Element Radio Linked Interferometer Network (MERLIN) at 18cm and 6cm. We detect two compact radio sources, with brightness temperatures above 105K, suggesting that they are related to AGN activity. We show that the total 18 cm radio emission from the galaxy is dominated neither by these compact sources nor large-scale emission, but extended emission confined within a sub-kpc central region. IC 2497 therefore appears as a typical luminous infrared galaxy that exhibits a nuclear starburst with a massive star formation rate (M>5M☉) of 12.4M☉/yr. These results are in line with the hypothesis that the ionisation nebula ``Hanny's Voorwerp'' at a distance of ∼15-25kpc from the galaxy is ionised by the radiation cone of the AGN.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: ISM - galaxies: individual: IC 2497 - galaxies: star formation

Nomenclature: Text, Figs 1-3, Table 2: [RGJ2010] CN (Nos C1-C2).

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 IC 2497 rG 09 41 04.1049384864 +34 43 58.172413980           ~ 90 1

Query : 2010A&A...517L...8R

Basic data :
IC 2497 -- Radio Galaxy
Other object types: otypes_help 		G (2006AJ,LEDA,...), Rad (FIRST,NVSS,...), IR (IRAS,PSCz), SyG (2023A&A), rG (2018AJ), AGN (2023A&A), * (Gaia), Opt (SDSS)
ICRS coord. (ep=J2000) : 		09 41 04.1049384864 +34 43 58.172413980 (Optical) [ 3.4005 1.5472 90 ] C 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		09 38 03.6103066274 +34 57 37.906450515 [ 3.4005 1.5472 90 ]
Gal coord. (ep=J2000) : 		190.1902779046287 +48.8560595534270 [ 3.4005 1.5472 90 ]
Radial velocity / Redshift / cz : 		V(km/s) 14618 [3] / z(spectroscopic) 0.05001 [0.00001] / cz 14992.6 [3.0]
   (Opt) C 2020ApJS..249....3A
Angular size (arcmin): 		0.70298 0.381226 115 (Opt) B 2023ApJS..269....3M
Fluxes (9) :
G 20.047943 [0.013489] C 2020yCat.1350....0G
J 12.542 [0.038] C 2006AJ....131.1163S
H 11.707 [0.056] C 2006AJ....131.1163S
K 11.411 [0.047] C 2006AJ....131.1163S
u (AB) 17.272 [0.016] C 2020ApJS..249....3A
g (AB) 15.475 [0.003] B 2020ApJS..249....3A
r (AB) 14.628 [0.002] B 2020ApJS..249....3A
i (AB) 14.146 [0.002] B 2020ApJS..249....3A
z (AB) 13.793 [0.004] B 2020ApJS..249....3A
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 1 Display criteria :

Identifiers (14) :
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IC 2497 MaNGA 11751-6101 NVSS J094104+344356 WN B0938.0+3457
FIRST J094104.0+344358 MaNGA 1-567397 PSCz Q09380+3457 Gaia DR3 797737849648066048
IRAS 09380+3457 2MASX J09410407+3443585 SDSS J094104.11+344358.4
LEDA 165538 NPM1G +34.0168 TGSSADR J094104.0+344358

References (90 between 1850 and 2026) (Total 90)
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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Collections of Measurements Description of Measurements

Velocities : 6   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : IC 2497

Link by name to the catalogue in VizieR :

FIRST J094104.0+344358 IRAS 09380+3457 2MASX J09410407+3443585 NPM1G +34.0168 NVSS J094104+344356
SDSS J094104.11+344358.4 WN B0938.0+3457 Gaia DR3 797737849648066048

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