Comments (5)
Bill-Gray
commented on September 26, 2024
Thanks for the comments. The four extra spaces were both no-questions-about-it wrong and quite easy to fix. Fixing it also caused me to notice and fix two objects with no GCVS designation listed in the file : V1428 Cen from 2012 and HV Cet from 2008.
Adding Z Cam, AT Cnc, and other UGZs is another issue. I currently don't have any of them. The current GCVS lists 43 of them (including a few "UGZ:" types, i.e., "we think it's that type, but don't hold us to it.") List shown below.
I'd be okay with adding these objects. I am really a bit outside my field here (I'm an asteroid tracking guy). Seems to me that if there are "missing" types in this catalog (possibly beyond just the UGZs), a decent start would be to look for stars of those types in GCVS and merge them in.
desig RA (J2000) dec type max mag min mag band
RX And *|010435.52 +411757.8 |UGZ | 10.2 | 15.1 |V
IW And |010108.91 +432326.0 |UGZ: | 13.7 | 17.3 |p
V0510 Aqr |214653.36 -021820.4 |UGZ: | 16.79 | 20.25 |CV
V0991 Aql *|193534.85 +063345.7 |UGZ: | 13.4 |< 15.0 |p
Z Cam *|082513.18 +730639.1 |UGZ | 9.8 | 14.5 |V
SY Cnc *|090103.32 +175356.0 |UGZ | 10.5 | 14.5 |V
AT Cnc *|082836.90 +252002.9 |UGZ | 12.7 | 16.2 |B
WZ CMa |071849.18 -270742.8 |UGZ: | 14.5 |< 17. |p
V0513 Cas |001814.90 +661813.8 |UGZ: | 15.5 |< 17.2 |p
BP CrA |183650.89 -372553.4 |UGZ: | 13.5 | 15.9 |V
SW Crt |115225.44 -243102.0 |UGZ: | 15.2 | 17.5 |p
EM Cyg *|193840.11 +303028.4 |UGZ+E | 11.9 | 14.4 |p
V0868 Cyg |192904.43 +285425.9 |UGZ | 14.3 |< 17.8 |p
V1285 Cyg *|194449.53 +355934.9 |UGZ: | 13.1 | 14.8 |p
V1363 Cyg |200611.55 +334237.9 |UGZ | 13.0 |< 17.6 |p
V1404 Cyg |215716.37 +521200.5 |UGZ | 15.7 |< 17.7 |p
V1504 Cyg |192856.45 +430536.4 |UGZ: | 13.5 | 17.4 |p
V1505 Cyg |192948.97 +283254.1 |UGZ | 15.2 |< 17.5 |p
IS Del |203109.63 +162309.8 |UGZ: | 15. |< 17.5 |p
AB Dra |194906.38 +774423.0 |UGZ | 11.0 | 15.3 |V
AQ Eri |050613.06 -040807.9 |UGZ: | 12.5 | 16.5 |p
FM Gru |220218.88 -430519.0 |UGZ: | 13.4 | 16.6 |V
AH Her *|164410.01 +251502.0 |UGZ | 10.9 | 14.7 |p
TT Ind |203337.10 -563344.8 |UGZ | 14.0 |< 16.5 |p
MN Lac |222304.62 +524058.4 |UGZ | 15.1 |< 18.0 |p
MV Leo *|102800.07 +214813.6 |UGZ+E | 15.5 | 17.7 |V
V0391 Lyr |182111.97 +384743.7 |UGZ | 14.0 | 17.0 |p
V0419 Lyr |191014.04 +290614.5 |UGZ | 14.4 |< 17.5 |p
CG Mus |122013.12 -741315.0 |UGZ | 15.9 | 17.0 |p
HP Nor |162049.57 -545322.8 |UGZ | 12.8 | 16.41 |V
AY Oct |232750.94 -754040.0 |UGZ: | 15.0 | 16.1 |p
BI Ori |052351.76 +010030.1 |UGZ | 13.2 | 16.7 |p
CN Ori *|055207.79 -052500.6 |UGZ | 11.0 | 16.2 |V
V0344 Ori |061518.96 +153100.0 |UGZ | 14.2 | 17.5 : |p
TZ Per *|021350.94 +582252.7 |UGZ | 12.0 | 15.6 |V
KT Per *|013708.51 +505720.5 |UGZ+ZZ| 11.5 | 15.39 |V
PY Per |025000.10 +373923.4 |UGZ | 13.8 | 16.5 |p
V0368 Per |024732.61 +345828.1 |UGZ: | 15.2 |< 17.5 |p
V0392 Per *|044321.37 +472127.1 |UGZ: | 15. | 17.5 |p
BX Pup *|075415.56 -241936.3 |UGZ | 13.76 | 16.0 |V
TW Tri |013637.01 +320040.0 |UGZ | 13.3 | 17.0 |p
VW Vul *|205745.07 +253025.7 |UGZ | 13.1 | 16.27 |B
FY Vul *|194139.96 +214558.7 |UGZ | 13.4 | 15.33 |B
from galnovae.
Xamidimura
commented on September 26, 2024
Z Cam and AT Cnc may be linked to nova eruptions in -76 (i.e. 77 BC/BCE) and 1645, respectively. Of course Z Cam-type dwarf novae (UGZ) in general should not be added to the nova list.
from galnovae.
Xamidimura
commented on September 26, 2024
Papers: 2012ApJ...756..107S (Z Camelopardalis) and 2017MNRAS.465..739S (AT Cancri)
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Bill-Gray
commented on September 26, 2024
Ah, interesting... thanks for that. Both cases do look somewhat tenuous; I see why you wrote "may be linked..." But we have other tenuous cases in the file, of class N? and N??.
I've put together a galnovae.txt with Z Cam and AT Cnc added, and much of the data from GCVS. Still a work in progress, but the basic idea is that they would be at the end of the file with the oldest novae. I've listed them both as class N??/UGZ.
I notice that the Z Cam paper says they couldn't actually detect expansion from images taken in 2007 and 2010, but that "detection and measurement of this rate of expansion should be possible in just a few years". I wonder how much that shell has expanded in 2022.
from galnovae.
Bill-Gray
commented on September 26, 2024
Since we've got those two objects added, I'll close this as 'resolved'.
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