2015ApJ...807L..19Y

Query : 2015ApJ...807L..19Y

2015ApJ...807L..19Y - Astrophys. J., 807, L19 (2015/July-1)

Detection of a compact nuclear radio source in the Local Group elliptical galaxy M32.

YANG Y., LI Z., SJOUWERMAN L.O., WANG Q.D., GU Q., KRAFT R.P. and YUAN F.

Abstract (from CDS):

The Local Group compact elliptical galaxy M32 hosts one of the nearest candidate supermassive black holes (SMBHs), which has a previously suggested X-ray counterpart. Based on sensitive observations taken with the Karl G. Jansky Very Large Array (VLA), we detect for the first time a compact radio source coincident with the nucleus of M32, which exhibits an integrated flux density of at 6.6 GHz. We discuss several possibilities for the nature of this source, favoring an origin of the long-sought radio emission from the central SMBH, for which we also revisit the X-ray properties based on recently acquired Chandra and XMM-Newton data. Our VLA observations also discover radio emission from three previously known optical planetary nebulae in the inner region of M32.

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Journal keyword(s): galaxies: individual: M32 - galaxies: nuclei - radio continuum: galaxies

Nomenclature: Table 2: [YLS2015] RN (Nos R1-R4).

Simbad objects: 16

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Number of rows : 16
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 6C 003542+412035 Bla 00 38 24.84358446 +41 37 06.0002701   19.9 19.9 18.95   ~ 143 1
2 CXOM32 J004241.7+405158 X 00 42 41.70 +40 51 57.7           ~ 2 0
3 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
4 [HTU2003] X-1 X 00 42 41.838 +40 51 54.98           ~ 3 0
5 Ford NGC 221 27 PN 00 42 41.891 +40 51 58.41           ~ 7 0
6 CXOM32 J004242.5+405153 X 00 42 42.52 +40 51 52.6           ~ 4 0
7 Ford NGC 221 24 PN 00 42 42.563 +40 51 56.52           ~ 11 0
8 Ford NGC 221 25 PN 00 42 42.659 +40 51 56.41           ~ 10 0
9 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
10 NAME M31* Rad 00 42 44.33 +41 16 08.4           ~ 49 0
11 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
12 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
13 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
14 NAME GCT Rad 17 45 41.282 -29 00 59.17           ~ 25 0
15 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2541 1
16 NAME Local Group GrG ~ ~           ~ 9325 0

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