2014A&A...567A..59G


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST18:44:48

2014A&A...567A..59G - Astronomy and Astrophysics, volume 567A, 59-59 (2014/7-1)

Discovery of a new supernova remnant G150.3+4.5.

GAO X.Y. and HAN J.L.

Abstract (from CDS):

Large-scale radio continuum surveys have good potential for discovering new Galactic supernova remnants (SNRs). Surveys of the Galactic plane are often limited in the Galactic latitude of |b|∼5°. SNRs at high latitudes, such as the Cygnus Loop or CTA 1, cannot be detected by surveys in such limited latitudes. Using the available Urumqi λ6cm Galactic plane survey data, together with the maps from the extended ongoing λ6cm medium latitude survey, we wish to discover new SNRs in a large sky area. We searched for shell-like structures and calculated radio spectra using the Urumqi λ6cm, Effelsberg λ11cm, and λ21cm survey data. Radio polarized emission and evidence in other wavelengths are examined for the characteristics of SNRs. We discover an enclosed oval-shaped object G150.3+4.5 in the λ6cm survey map. It is about 2.°5 wide and 3° high. Parts of the shell structures can be identified well in the λ11cm, λ21cm, and λ73.5cm observations. The Effelsberg λ21cm total intensity image resembles most of the structures of G150.3+4.5 seen at λ6cm, but the loop is not closed in the northwest. High resolution images at λ21cm and λ73.5cm from the Canadian Galactic Plane Survey confirm the extended emission from the eastern and western shells of G150.3+4.5. We calculated the radio continuum spectral indices of the eastern and western shells, which are β~-2.4 and β~-2.7 between λ6cm and λ21cm, respectively. The shell-like structures and their non-thermal nature strongly suggest that G150.3+4.5 is a shell-type SNR. For other objects in the field of view, G151.4+3.0 and G151.2+2.6, we confirm that the shell-like structure G151.4+3.0 very likely has a SNR origin, while the circular-shaped G151.2+2.6 is an HII region with a flat radio spectrum associated with optical filamentary structure, Hα, and infrared emission.

Abstract Copyright:

Journal keyword(s): radio continuum: ISM - ISM: supernova remnants

Status at CDS:   Acronym for new objects described in the dictionary of nomenclature and being created in SIMBAD.

Simbad objects: 20

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Number of rows : 20

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 SNR G119.5+10.2 SNR 00 06.6 +72 47           ~ 234 1
2 NVSS J033711+615302 Rad 03 37 11.40 +61 53 02.6           ~ 7 1
3 SNR G152.4-02.1 SNR 04 07 +49.3           ~ 11 0
4 SNR G149.5+03.2 SNR 04 17 +55.1           ~ 5 0
5 CGPSE 168 Rad 04 21 31 +53 46.0           ~ 3 0
6 SNR G151.2+02.6 SNR 04 21 55 +53 31.0           ~ 1 0
7 SNR G151.20+02.85 SNR 04 23.3 +53 40           ~ 1 0
8 CGPSE 172 Rad 04 25 20 +53 37.0           ~ 3 0
9 SNR G150.3+04.5 SNR 04 31 16.8 +55 53 24           ~ 14 0
10 SNR G178.2-04.2 SNR 05 25 +28.2           ~ 11 0
11 SNR G190.9-02.2 SNR 06 02 +18.4           ~ 10 0
12 SNR G354.4+00.0 SNR 17 32 -33.7           ~ 3 0
13 SNR G025.1-02.3 SNR 18 45 10 -08 00.0           ~ 10 0
14 SNR G085.4+00.7 SNR 20 50.7 +45 22           ~ 26 0
15 NAME Cyg Loop SNR 20 51.0 +30 40           ~ 823 0
16 SNR G085.9-00.6 SNR 20 58.7 +44 53           ~ 25 0
17 SNR G096.0+02.0 SNR 21 30 30 +53 59.0           ~ 16 0
18 SNR G107.5-01.5 SNR 22 52 +57.7           ~ 11 0
19 SNR G108.2-00.6 SNR 22 53 37.0 +58 51 36           ~ 15 0
20 SNR G113.0+00.2 SNR 23 36 35 +61 22.0           ~ 14 0

    Equat.    Gal    SGal    Ecl

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2020.07.14-18:44:48

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