1997A&A...320..378S


Query : 1997A&A...320..378S

1997A&A...320..378S - Astronomy and Astrophysics, volume 320, 378-394 (1997/4-2)

ROSAT observations of the galactic wind in M 82.

STRICKLAND D.K., PONMAN T.J. and STEVENS I.R.

Abstract (from CDS):

We present ROSAT PSPC and HRI observations of the galactic wind from the starburst galaxy M 82. X-ray emission from the wind is detected to a distance of ∼6kpc from the plane of the galaxy. Making use of the PSPC's mixture of good spatial and spectral characteristics, we separate point source and diffuse emission, and investigate the spectral variation of the diffuse emission through the wind. The intrinsic X-ray luminosity of the wind in the 0.1-2.4keV band is found to be approximately 1.9x1040erg/s outside the immediate vicinity of the nucleus. The temperature of the diffuse emission is found to decrease weakly from ∼0.6keV to ∼0.4keV along the minor axis, whilst the inferred gas density drops as z–0.5 and z–0.8 along the northern and southern minor axes respectively. We compare these results with those expected from two simple models for the emission: Chevalier & Clegg's adiabatically expanding free wind and emission from shocked clouds in a wind, and find that the emission cannot come from a free wind, but that shock heated clouds could be the source of the emission.

Abstract Copyright:

Journal keyword(s): galaxies: individual: M 82 - galaxies: starburst - galaxies: ISM-galaxies: halos - X-rays: galaxies

Nomenclature: Table 2: [SPS97] NN (Nos 1-16)

Simbad objects: 17

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Number of rows : 17
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 RX J0954.3+6946 X 09 54 20 +69 46.7           ~ 1 0
2 RX J0954.5+6948 X 09 54 34 +69 48.2           ~ 1 0
3 RX J0955.1+6943 X 09 55 07 +69 43.7           ~ 1 0
4 TYC 4383-1099-1 PM* 09 55 14.9160771936 +69 36 14.359696344   11.54 10.63 10.4   ~ 9 0
5 RX J0955.2+6947 X 09 55 16 +69 47.7           ~ 2 0
6 RX J0955.5+6944 X 09 55 33 +69 44.8           ~ 1 0
7 RX J0955.7+6941 X 09 55 47 +69 41.5           ~ 1 0
8 CXOM82 J095550.9+694044 HXB 09 55 50.690 +69 40 43.76           ~ 95 0
9 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5585 6
10 RX J0956.0+6941 X 09 56 02 +69 41.3           ~ 1 0
11 RX J0956.3+6949 X 09 56 18 +69 49.1           ~ 1 0
12 RX J0956.3+6938 X 09 56 22 +69 38.8           ~ 1 0
13 RX J0956.7+6938 X 09 56 43 +69 38.0           ~ 1 0
14 QSO B0952+698 QSO 09 56 58.6703327304 +69 38 52.550591208   19.80 19.50     ~ 41 0
15 RX J0957.0+6934 * 09 57 00.1943723184 +69 34 19.515955872           ~ 2 0
16 RX J0957.2+6944 X 09 57 13 +69 44.3           ~ 1 0
17 RX J0957.3+6935 X 09 57 23 +69 35.6           ~ 1 0

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2022.05.29-03:54:56

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