SAISNCAT - Sternberg Astronomical Institute Catalog of Supernovae
The SAI Catalog of Supernovae and radial distributions of Supernovae of various types in Galaxies. Tsvetkov D.Yu., Pavlyuk N.N., Bartunov O.S. <Pis'ma Astron. Zh., 30, 803 (2004)> =2004PAZh...30..803T =2004AstL...30..729T The Online SAI Catalog of Supernovae http://www.sai.msu.su/sn/sncat
The supernova designation in the standard form as recommended by the Dictionary of Nomenclature of Celestial Objects, consisting of the 'SN' prefix followed by the year it was discovered, and either the upper-case letters 'A' through 'Z' (for the first 26 SNe discovered in a given year) or the lower-case letters 'aa', 'ab', etc. (for the 27th, 28th, etc., SNe discovered in a given year). Notice that searches by name in the HEASARC database are presently translated to upper-case characters, so that lower-case letters should not be specified in searches by name as a parameter in this table; users should instead enter names such as 'SN 2004gs' in the 'Object Name or Coordinates' box on the Browse query page, and have the Simbad or NED name resolvers find the SN position.
This flag is set to 'Y' if there is a note about the supernova in the file https://cdsarc.cds.unistra.fr/ftp/cats/II/256/notes.dat.
The SN host galaxy identification from the following catalogs and using the following naming scheme: N for NGC, I for IC, M for MCG, U for UGC, P for PGC, and E for ESO, or from the LEDA database. Anonymous galaxies are labelled 'ANON'.
The Right Ascension of the host galaxy fixed in the J2000.0 equinox in which it was given in the original catalog, and (usually) specified to 0.01 minutes of time (sometimes to lower precision).
The Declination of the host galaxy fixed in the J2000.0 equinox in which it was given in the original catalog, and (usually) specified to 0.1 arcminutes (sometimes to lower precision).
The photographic or other magnitude of the host galaxy.
A flag that indicates that the source or type of the galaxy magnitude given in the parameter bmag using the following schema:
1 = from the PGC Catalog, 2 = from the IAU Circular reporting the SN discovery, 3 = from the NED database, 4 = from the LEDA database, 5 = means that bmag is the total I-magnitude of the host galaxy
The position angle of the major axis of the host galaxy, measured counterclockwise from North to East, in degrees.
Only given for disk-like systems, this is the inclination of the galaxy with respect to the plane of the sky, in degrees. Thus, this parameter is 0 degrees for face-on systems.
The heliocentric radial velocity of the host galaxy, measured in km/s, typically given for nearby galaxies with redshifts less than 1.
A flag which is set to ':' if the radial velocity is considered to be uncertain.
The redshift of the host galaxy, typically given for distant galaxies with redshifts greater than or equal to 1.
The host galaxy morphological type from the RC3 Catalog. The symbols 'L' and 'E' refer to late and early types of host galaxies, respectively.
The decimal logarithm of the apparent axial ratio of the host galaxy.
The decimal logarithm of the apparent isophotal major diameter of the host galaxy, in units of 0.1 arcminutes.
The host galaxy morphological type numerical code, using the RC3 coding system.
The luminosity class of the host galaxy, taken from the RC3.
The offset of the supernova in the RA (E or W according to the value of the parameter ra_offset_dir) direction from the nucleus of the host galaxy, in arcseconds.
The direction of the offset of the supernova in the RA direction relative to the nucleus of the host galaxy.
The offset of the supernova in Declination (N or S according to the value of the parameter dec_offset_dir) from the nucleus of the host galaxy, in arcseconds.
The direction of the offset of the supernova in the Declination direction relative to the nucleus of the host galaxy.
This flag is set to '=' if this is the maximum magnitude, whereas if the value is '<', this is the discovery magnitude, and the magnitude at maximum could then have been brighter. (Note that the HEASARC has changed this latter value from the original value of '>' in the CDS table in order to conform with the usual logic that smaller numerical magnitudes are brighter.)
The supernova magnitude at maximum (or discovery) in the photometric band given in the parameter band_maxmag, if available; if the value of the parameter limit_maxmag is '=', this is the maximum magnitude, whereas if the value is '<', this is the discovery magnitude, and the magnitude at maximum could then have been brighter. (Note that the HEASARC has changed this latter value from the original value of '>' in the CDS table in order to conform with the usual logic that smaller numerical magnitudes are brighter.)
The photometric band in which the value of the SN magnitude (maxmag) is given: values of U, B, V, R, I, J, H, K, and L refer to observations in the standard Johnson-Cousins photometric system, values of g, r, i and z refer to data obtained in SDSS or HST bands, and a value of 'Note' means that a description of the magnitude is presented in remarks for the catalog. (The HEASARC is not sure where these remarks are located.)
This flag is set to ':', if the parameter maxmag is considered to be uncertain.
This flag is set to 'P' if the supernova was discovered photographically.
The date of supernova maximum light. The year in which this occurred is usually, but not always, the year given in the supernova's name. The exceptions (which are usually indicated by the parameter mx_epoch_flag having a value of 'D') are supernovae which were discovered at a date late in the year (and hence named after the discovery year), but which then reached maximum light early in the following year, e.g., SN 2003lq was discovered on 2003 Dec 28, but reached maximum light on or around 2004 Jan 7.
This flag is set to ':' if there is uncertainty in the date of maximum light, or set to 'D' if the discovery and maximum light years are different.
The date on which the supernova was discovered. This is always in the year which appears in the supernova's name.
The supernova type, following the standard classification.
The RA of the supernova in the specified equinox. Notice that the input table from which this parameter was obtained contained this parameter in J2000.0 equinox specified to the nearest 0.01 - 1 seconds of time. For many, particularly the older, SNe, this parameter was not given in the original catalog as obtained from the CDS. In such cases, the HEASARC has set the value of the parameter ra equal to that of the parameter ra_galaxy: in order for such case to be readily identified, we have added a new parameter in the HEASARC version of this catalog called pos_flag which is set to the value 'G' for all such cases.
The declination of the supernova in the specified equinox. Notice that the input table from which this parameter was obtained contained this parameter in J2000.0 equinox specified to the nearest 0.1 or 1 arcseconds. For many, particularly the older, SNe, this parameter was not given in the original catalog as obtained from the CDS. In such cases, the HEASARC has set the value of the parameter dec equal to that of the parameter dec_galaxy: in order for such case to be readily identified, we have added a new parameter in the HEASARC version of this catalog called pos_flag which is set to the value 'G' for all such cases.
The galactic longitude of the supernova.
The galactic latitude of the supernova.
This flag indicates whether or not positional information for a supernova was provided in the original catalog as obtained from the CDS. For many, particularly the older, SNe, this information was not provided, so, in such cases, the HEASARC has set the values of the parameters ra and dec equal to those of the parameters ra_galaxy and dec_galaxy, respectively. In order for such cases to be readily identified, we have added this new parameter pos_flag to the HEASARC version of this catalog: it is set to the value 'G' for all cases where positional information for a supernova was NOT explicitly provided in the original catalog, else it is left blank.
This flag is set to '?' to indicate an uncertain supernova, and to '??' to indicate a very uncertain supernova.
This is a code for the search program or observatory that discovered the supernova, as follows:
AB Abastumani Observatory AS Asiago Observatory BA Berkeley Automatic SN search CA Cote d'Azur Observatory CR Cerro el Roble Observatory CT Cerro Tololo Observatory EV Visual SN search of R.Evans GA Sternberg Astronomical Institute MN SNe discovered by R.H. McNaught KO Konkoly Observatory P1 Palomar Observatory SN search 1958-1974 P2 Palomar Observatory SN search 1937-1940 P3 SNe discovered on POSS plates P4 SNe discovered on plates of second POSS ZM Zimmerwald Observatory SC The Supernova Cosmology Project (S. Perlmutter et al.) HZ High-Z Supernova Search Team (R.P. Kirshner, P. Garnavich, P. Challis et al.) PE Perth observatory supernova search program (A. Williams and R. Martin) MS Mount Stromlo Abell Cluster Supernova Search Team (L. Germany, D. Reiss, C. Stubbs, B. Schmidt, S. Chan) BE Beijing Astronomical Observatory Supernova Survey (Weidong Li, Qiran Qiao, Yulei Qiu, Jingyao Hu) KU Supernovae discovered by R.Kushida, Yatsugatake South Base Observatory, Japan JP Other Japanese Professionals and Amateurs (Aoki, K. Okazaki et al.) IT Italian Professionals and Amateurs (S. Pesci, M. Villi, A. Gabrielcic et al.) WJ Supernovae discovered by W. Johnson, CA TE Supernovae discovered by M. Schwartz (Tenagra Observatory, Oregon, USA) ER Experience de Recherche d'Objets Sombres (EROS) collaboration (O. Perdereau, J.C. Hamilton) MD University of Texas McDonald Observatory Supernova Search Team (M.T. Adams, T. Montemayor, D.A. Howell, J.C. Wheeler, M.H. Ward, and W. Wren) HB Supernovae discovered with help of HST WS Wise Observatory Optical Transients Search NG Nearby Galaxies Supernova Search Team EC European Supernova Cosmology Consortium ST STRESS team (E. Cappellaro, A. Pastorello, M. Prevedello, M. Salvo, and M. Turatto, Padova; J. Danziger, P. Mazzali and L. Rizzi, Trieste, F. Patat - ESO PP PUC-Padova Supernova Search. See IAU Circulars NN 7537, 7549 LT The collaboration of the Lick Observatory Supernova Search and the Tenagra Observatory Supernova Search (using the KAIT and Tenagra II, III automated telescopes) LI Lick Observatory Supernova Search) __ Other notes for individual supernovae.
The name of the SN discoverer(s). For organized search teams, the standard acronyms are given, e.g., the ESSENCE project, the SDSS collaboration, etc.
The Browse object classification as created by the HEASARC based on the value of the sn_type parameter.