2010A&A...518L.139O


Query : 2010A&A...518L.139O

2010A&A...518L.139O - Astronomy and Astrophysics, volume 518, L139-139 (2010/7-2)

Dust in the bright supernova remnant N49 in the LMC.

OTSUKA M., VAN LOON J.T., LONG K.S., MEIXNER M., MATSUURA M., REACH W.T., ROMAN-DUVAL J., GORDON K., SAUVAGE M., HONY S., MISSELT K., ENGELBRACHT C., PANUZZO P., OKUMURA K., WOODS P.M., KEMPER F. and SLOAN G.C.

Abstract (from CDS):

We investigate the dust associated with the supernova remnant (SNR) N49 in the Large Magellanic Cloud (LMC) as observed with the Herschel Space Observatory. N49 is unusually bright because of an interaction with a molecular cloud along its eastern edge. We have used PACS and SPIRE to measure the far IR flux densities of the entire SNR and of a bright region on the eastern edge of the SNR where the SNR shock is encountering the molecular cloud. Using these fluxes supplemented with archival data at shorter wavelengths, we estimate the dust mass associated with N49 to be about 10M. The bulk of the dust in our simple two-component model has a temperature of 20-30K, similar to that of nearby molecular clouds. Unfortunately, as a result of the limited angular resolution of Herschel at the wavelengths sampled with SPIRE, the uncertainties are fairly large. Assuming this estimate of the dust mass associated with the SNR is approximately correct, it is probable that most of the dust in the SNR arises from regions where the shock speed is too low to produce significant X-ray emission. The total amount of warm 50-60K dust is ∼0.1 or 0.4M, depending on whether the dust is modeled in terms of carbonaceous or silicate grains. This provides a firm lower limit to the amount of shock heated dust in N49.

Abstract Copyright:

Journal keyword(s): ISM: supernova remnants - dust, extinction - submillimeter: ISM - Magellanic Clouds

Simbad objects: 12

goto Full paper

goto View the references in ADS

Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10592 1
2 SNR B0102-72.3 SNR 01 04 01.2 -72 01 52           ~ 384 1
3 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6620 1
4 SNR B0453-68.5 SNR 04 53 36.00 -68 29 30.0           ~ 77 1
5 SNR J050555-680150 SNR 05 05 55.00 -68 01 54.0           ~ 83 0
6 SNR B0509-67.5 SNR 05 09 31 -67 31.3           ~ 217 0
7 SNR B0519-69.0 SNR 05 19 35.14 -69 02 00.5           ~ 152 0
8 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16620 1
9 SNR J052501-693842 SNR 05 25 02.20 -69 38 39.0           ~ 387 1
10 SNR B0525-66.0 SNR 05 25 27.1 -65 59 11           ~ 98 1
11 SNR J052559-660453 SNR 05 26 00.4 -66 05 02     12.71     ~ 430 2
12 LH 53 As* 05 26.1 -66 14           ~ 32 0

To bookmark this query, right click on this link: simbad:objects in 2010A&A...518L.139O and select 'bookmark this link' or equivalent in the popup menu


2023.03.21-19:23:46

© Université de Strasbourg/CNRS

    • Contact