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Zen: snrad queries

snrad queries

Supernovae radial distribution

Now, we have sndist function,developed by Gala as , so we can obtain sn radial distribution from inside database.

Tables used:

  • sn.sn_cat - main view of SN catalogue, use '\d sn.sn' to view column names
  • sn.sntypes - sn types

Relative and absolute distances for given supernovae:

cas=# select sndist('1997C');
      sndist       
-------------------
 (6.74416,117.721)
(1 row)

Just relative distance:

cas=# select (sndist('1997C')).reldist;
 reldist 
---------
 6.74416
(1 row)

More information:

cas=# select sn_name,snt.name, gal_type, gal_type_code,
 gal_type_code_prec, coalesce((sndist(s)).reldist,0) as rd 
from sn.sn_cat s, sn.sntypes snt 
where s.sn_type = snt.id and sn_name='1997C';
 sn_name | name | gal_type | gal_type_code | gal_type_code_prec |   rd    
---------+------+----------+---------------+--------------------+---------
 1997C   | Ib/c | Sbc      |           3.6 |                2.1 | 6.74416
(1 row)

Top 10 relative distances:

cas=# select sn_name,snt.name, gal_type, gal_type_code,
 gal_type_code_prec, coalesce((sndist(s)).reldist,0) as rd 
from sn.sn_cat s, sn.sntypes snt 
where s.sn_type = snt.id  order by rd desc limit 10;
 sn_name | name | gal_type | gal_type_code | gal_type_code_prec |   rd    
---------+------+----------+---------------+--------------------+---------
 1997C   | Ib/c | Sbc      |           3.6 |                2.1 | 6.74416
 2001if  | Ia   | S0-a     |          -0.5 |                  1 | 4.02793
 1999gr  | Ia   | Sbc      |           4.3 |                1.8 |  3.5263
 2005do  | Ia   | S0       |            -2 |                0.4 | 3.49693
 2004S   | Ia   | Sab      |           1.8 |                2.6 | 3.33767
 1969L   | IIP  | Sc       |           5.3 |                0.6 | 3.13418
 1976L   | I    | E-SO     |          -2.9 |                0.4 | 3.06896
 1992bo  | Ia   | S0       |          -1.7 |                1.4 | 2.92768
 2005et  | Ia   | S?       |           0.2 |                  5 | 2.92338
 2003dv  | IIn  | I        |           9.8 |                0.8 | 2.90888
(10 rows)

Top 10 absolute distances:

cas=# select sn_name,snt.name, gal_type, gal_type_code,
 gal_type_code_prec, coalesce((sndist(s)).absdist,0) as ad 
from sn.sn_cat s, sn.sntypes snt 
where s.sn_type = snt.id  order by ad desc limit 10;
 sn_name | name | gal_type | gal_type_code | gal_type_code_prec |   ad    
---------+------+----------+---------------+--------------------+---------
 1997C   | Ib/c | Sbc      |           3.6 |                2.1 | 117.721
 1987A   | II   | SBm      |           9.1 |                0.5 | 105.436
 2005et  | Ia   | S?       |           0.2 |                  5 | 72.2292
 2004go  | Ia   | E-SO     |          -2.7 |                1.4 | 70.7152
 2005do  | Ia   | S0       |            -2 |                0.4 | 70.3288
 2003iz  | Ia   | S?       |           0.9 |                  5 | 61.1004
 2001if  | Ia   | S0-a     |          -0.5 |                  1 | 57.4466
 2005er  | Ia   | E        |          -4.8 |                0.4 | 53.4304
 2005E   | Ib/c | S0-a     |           0.4 |                0.6 | 51.6774
 2002jp  | Ic   | Sab      |           2.2 |                1.2 | 48.3328
(10 rows)

Additional constraints could be used, for example, supernovae type.

cas=# select * from sn.sntypes;
 id | name |          mod_date
----+------+----------------------------
  1 | I    | 2006-03-22 16:30:12.854722
  2 | Ia   | 2006-03-22 16:30:12.856209
  3 | Ib   | 2006-03-22 16:30:12.858478
  4 | Ib/c | 2006-03-22 16:30:12.860389
  5 | Ic   | 2006-03-22 16:30:12.86186
  6 | II   | 2006-03-22 16:30:12.863361
  7 | IIb  | 2006-03-22 16:30:12.864829
  8 | IIn  | 2006-03-22 16:30:12.866439
  9 | IIL  | 2006-03-22 16:30:12.868458
 10 | IIP  | 2006-03-22 16:30:12.870882
 11 | Pec  | 2006-03-22 16:30:12.872674
(11 rows)

Top 10 relative distances for Ib/c supernovae:

cas=# select sn_name,snt.name, gal_type, gal_type_code,
 gal_type_code_prec, coalesce((sndist(s)).reldist,0) as rd 
from sn.sn_cat s, sn.sntypes snt where s.sn_type = snt.id 
and sn_type in (4) 
order by rd desc limit 10;
 sn_name | name | gal_type | gal_type_code | gal_type_code_prec |    rd    
---------+------+----------+---------------+--------------------+----------
 1997C   | Ib/c | Sbc      |           3.6 |                2.1 |  6.74416
 2005E   | Ib/c | S0-a     |           0.4 |                0.6 |  2.66349
 2002cp  | Ib/c | SABc     |           5.2 |                0.6 |  1.26045
 2005N   | Ib/c | Sb       |           3.1 |                0.6 |  1.19668
 2003dr  | Ib/c | Sc       |           5.8 |                0.5 |  1.01439
 1999P   | Ib/c | S?       |             4 |                  5 | 0.892924
 1991R   | Ib/c | S?       |           4.4 |                  5 |  0.85325
 1996cd  | Ib/c | S?       |           1.1 |                  5 | 0.848163
 2003A   | Ib/c | Sb       |           3.1 |                0.4 | 0.789405
 1990aa  | Ib/c | Sb       |           3.3 |                2.8 |  0.72177
(10 rows)

Results could be saved to file:

cas=# \o filename
cas=# YOUR SELECT
cas=# \o

Use '\a' for unaligned output