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MOSTSNRCAT - Molonglo Observatory Synthesis Telescope Supernova Remnant Catalog

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Overview

A catalog of supernova remnants (SNR) in the southern Galaxy within the Galactic Plane area 245 degrees <= galactic longitude l_II <= 355 degrees, galactic latitude |b_II| <~ 1.5 degrees has been produced from observations made in a series of 650 overlapping fields at 0.843 GHz (35.6 cm) with a spatial resolution of 43" using the Molonglo Observatory Synthesis Telescope (MOST). This table contains information on 57 known SNR (listed in Table MSC.A of the reference paper), 18 SNR newly discovered in this survey (Table MSC.B), 16 possible SNR (Table MSC.C), and 2 reclassified SNR (discussed in Section 3.3 of the reference paper), for a total of 93 SNR.

Catalog Bibcode

1996A&AS..118..329W

References

The MOST supernova remnant catalogue (MSC).
       Whiteoak J.B.Z., Green A.J.
      <Astron. Astrophys. Suppl. Ser. 118, 329 (1996)>
      =1996A&AS..118..329W      (SIMBAD/NED BibCode)

Provenance

This table was created by the HEASARC in March 2007 based on the CDS table J/A+AS/118/329, file msc.dat.

Parameters

SNR_Status
This status flag takes the following possible values:

       k: Known SNR    (Table MSC.A of the paper)
       n: New SNR      (Table MSC.B of the paper)
       p: Possible SNR (Table MSC.C of the paper)
       r: Reclassifed  (section 3.3 of the paper)
  

Note_Flag
This parameter is set to 'Y' to indicate that a note exists for this SNR in the associated notes file ftp://cdsarc.u-strasbg.fr/pub/cats/J/A+AS/118/329/notes.dat

Name
The name of the supernova remnant using the designation 'MSC LLL.l+B.b' (Most Supernova Catalog and the galactic coordinates of the SNR), as recommended by the CDS Dictionary of Nomenclature of Celestial Objects. In the original reference paper, the generic 'G' prefix was used instead of 'MSC '.

RA
The Right Ascension of the position of the geometric center of the SNR in the selected equinox. When the object does not have a complete shell, the center and dimensions of the ring which best describes the remnant were used. The RA was given in J2000.0 coordinates to a precision of 1 second of time in the original table.

Dec
The Declination of the position of the geometric center of the SNR in the selected equinox. When the object does not have a complete shell, the center and dimensions of the ring which best describes the remnant were used. The Declination was given in J2000.0 coordinates to a precision of 1 arcminute in the original table, except for the possible SNR (objects with snr_status = 'p') where it was given to a precision of 1 arcsecond.

LII
The Galactic Longitude of the SNR.

BII
The Galactic Latitude of the SNR.

Flux_843_MHz_Limit
This parameter is set to '>' if the quoted integrated flux density of the SNR at 0.843 GHz is a lower limit (typically for large objects).

Flux_843_MHz
The integrated flux density of the SNR at 0.843 GHz, in mJy.

Major_Axis
The major diameter of the SNR's shell or equivalent elliptical ring, at 0.843 GHz, in arcminutes.

Minor_Axis
The minor diameter of the SNR's shell or equivalent elliptical ring, at 0.843 GHz, in arcminutes.

SB_843_MHz_Limit
This parameter is set to '>' if the quoted mean surface brightness of the SNR at 0.843 GHz is a lower limit (typically for large objects).

SB_843_MHz
The mean surface brightness of the SNR at 0.843 GHz, in Jy/sr.

SNR_Type
This parameter indicates the type of SNR:

       S: shell
       P: plerion or filled-centre
       C: composite
       M: apparent multiple shell structure
  

Figure_Number
The figure number in the reference paper in wich the SNR is depicted (not given for possible SNR, i.e., objects with snr_status='p').

Most_Ref_Code
A reference code for references to previous MOST publications on the specified SNR as follows (given for known SNRs only, i.e., objects with snr_status='k'):

       1: Caswell et al., 19833MNRAS.204..915C
       2: Caswell et al., 1983PASAu...5..227C
       3: Caswell et al., 1992ApJ...399L.151C
       4: Haynes, 1987AuJPh..40..741H
       5: Kesteven & Caswell, 1987A&A...183..118K
       6: Kesteven et al., 1987AuJPh..40..855K
       7: Manchester & Durdin, 1983IAUS..101..421M
       8: Milne et al., 1985PASAu...6...78M
       9: Milne et al., 1988, in: Kundt W. (ed.) Supernova Shells and
          their Birth Events,. Spinger-Verlag, p.98
      10: Milne et al., 1989PASAu...8..187M
      11: Roger at al., 1985Natur.316...44R
      12: Roger et al., 1986MNRAS.219..815R
      13: Whiteoak et al., 1989PASAu...8..176W
      14: Whiteoak, 1990Natur.347..157W
      15: Whiteoak, 1992MNRAS.256..121W
      16: Whiteoak, 1993ApJ...415..701W
  

Remarks
This parameter contains remarks on the SNR, including common names by which the remnants are known, or, for possible SNR, brief descriptions of the morphology.

Class
The HEASARC Browse object classification, based on the value of the snr_type parameter.


Contact Person

Questions regarding the MOSTSNRCAT database table can be addressed to the HEASARC User Hotline.

Page Author: Browse Software Development Team
Last Modified: 21-Mar-2007