2008A&A...485..679P


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST21:21:30

2008A&A...485..679P - Astronomy and Astrophysics, volume 485, 679-693 (2008/7-3)

Correlation of the radio continuum, infrared, and CO molecular emissions in NGC3627.

PALADINO R., MURGIA M., TARCHI A., MOSCADELLI L. and COMITO C.

Abstract (from CDS):

We present new radio observations of two regions of the spiral galaxy NGC3627, including new radio continuum observations at 1.4GHz with the Very Large Array, and also new observations in the CO line, taken with the Plateau de Bure interferometer. Comparing these observations with archival Spitzer and Hα data we study the correlation of the radio continuum (RC), infrared-8µm, and CO emissions at a spatial resolution of 100pc. We compare the point-by-point variations of the RC, CO, and 8 µm brightnesses in two distinct regions of 2 kpcx2 kpc in size of NGC3627. We also present a three-dimensional fit of the observed data. We examined scale much lower than the electron diffusion scale, where a breakdown of the correlations would be expected. However, no evidence for such correlation breakdown has been found. The RC emission follows the distribution of CO well, and the widths of several structures, measured along slices across them, are comparable. Furthermore, we found that down to a spatial scale of 100 pc, the radio continuum emission is correlated with dust emissions at 4.5, 5.8, and 8µm, which trace different dust temperatures. We present a new perspective, a three-dimensional representation, with which to visualize and study the RC-CO-24µm and RC-CO-8µm correlations. We fit the observed data with a three-dimensional line, obtaining a rms of 0.25dex. The observed correlation enhances the complexity of the electrons diffusion, losses, and injection mechanisms, and of their connection to star formation processes described by molecular and dust emissions. We plan to further investigate this connection using spatially resolved spectral index studies at low radio frequencies where the thermal emission component is seemingly negligible.

Abstract Copyright:

Journal keyword(s): radio continuum: galaxies - galaxies: individual: NGC3627 - ISM: molecules - stars: formation

Simbad objects: 14

goto Full paper

goto View the reference in ADS

Number of rows : 14

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 3C 84 Sy2 03 19 48.1597607660 +41 30 42.114155434   13.10 12.48 11.09   ~ 3544 3
2 ICRF J052109.8+163822 Sy1 05 21 09.88592749 +16 38 22.0517668   19.37 18.84 18.480   ~ 745 1
3 ICRF J092703.0+390220 Sy1 09 27 03.0139516273 +39 02 20.847968628   17.17 17.00 16.486   ~ 932 1
4 M 95 GiP 10 43 57.733 +11 42 13.00 10.71 10.51 9.73 9.48   ~ 935 2
5 4C 01.28 BLL 10 58 29.60520747 +01 33 58.8237691   18.74 18.28 16.68   ~ 645 2
6 NGC 3521 LSB 11 05 48.5676206040 -00 02 09.228156576 10.06 9.83 9.02 10.1 9.6 ~ 695 2
7 SN 1973R SN* 11 20 11.5 +12 59 55   15.3 11.8     SNIIP 73 1
8 SN 1989B SN* 11 20 13.93 +13 00 18.9   12.25       SNIa 341 1
9 M 66 GiP 11 20 15.026 +12 59 28.64 9.85 9.65 8.92     ~ 1158 4
10 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5316 1
11 M 64 SyG 12 56 43.696 +21 40 57.57   9.36 8.52     ~ 812 2
12 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3781 4
13 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3715 1
14 NGC 7331 LIN 22 37 04.102 +34 24 57.31 10.65 10.35 9.48     ~ 1109 2

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2008A&A...485..679P and select 'bookmark this link' or equivalent in the popup menu


2020.07.04-21:21:30

© Université de Strasbourg/CNRS

    • Contact