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Catalog of Photoelectric Photometry Charts
Of the 2000 variable stars currently in the AAVSO observing program, there are about 100 mostly bright variables (V brighter than 10) that should be observed photoelectrically because of their small amplitude and/or other interesting features. So that these observations will be standardized, finding charts have been prepared using the AAVSO Variable Star Atlas, standard and preliminary AAVSO charts, and the Palomar Observatory Sky Survey. For each variable star field, a comparison and a check star have been selected according to the following criteria:
- The variable and its comparison should be as close together in the sky as possible to minimize differences due to extinction. Where possible, the comparison and check stars are within one to two degrees of the variable.
- Primarily spectral class G and F stars are used since they are least likely to vary. (Early F stars near the main sequence are generally avoided; F and G giants are looked at carefully; and F and G supergiants are completely avoided.) Spectral class K stars are used only when suitable G and F stars are not within one or two degrees (early K giants are usually fine and late K giants may be acceptable). NOTE- revised charts may have comparison stars with spectral class more similar to that of the variable.
- The variable and its comparison should be close enough in brightness that both can be observed with the same coarse gain setting on the amplifier. When possible the comparison and check stars are brighter than the variable and within 0.5 magnitude. NOTE-revised charts may have comparison stars chosen also for known UBV values.
- The comparison and check stars were selected from the Smithsonian Astrophysical Observatory Atlas and the Hipparcos Catalogue. The General Catalogue of Variable Stars (GCVS) and its supplements, the New Catalogue of Suspected Variable Stars (NSV) and its supplement, and the Hipparcos Catalogue were all consulted to rule out the possibility that they were known variables or suspected variables.
The Photoelectric Chart Catalog
The following abbreviations are used in the catalog:
-
TYPE
- C - cepheid
G Cas - gamma Cas type variable
L - (slow) irregular variable
Lb - giant irregular variable of late spectral class
NL - nova-like variable
RCB - R Coronae Borealis type variable
RS CVn- RS Canum Venaticorum type variable
RV - RV Tauri type variable
RVa - constant mean brightness
RVb - periodically varying mean brightness
SR - semiregular variable
SRa - comparatively stable periodicity (giant)
SRb - "poorly expressed' periodicity (giant)
SRc - supergiant
SRd - giant or supergiant of spectral class F, G, or K
Z And - Z Andromedae type variable
* - unique variable
? - unclassified
-
MAGNITUDES
- B - photoelectric B in the Johnson UBV system
- V - photoelectric V in the Johnson UBV system
- v - AAVSO visual
- (if no symbol is given, magnitude is visual)
Column 1 gives the 6-digit Harvard designation, showing the hour and minutes of right ascension, and the declination of the variable for 1900. North declinations are preceded by a plus (+) sign and south designations by a minus sign (-). Column 2 gives the name of the variable, and column 3 lists the type. Column 4 gives the values of maximum and minimum. Column 5 lists the period, with a colon (:) indicating approximation. Column 6 gives the spectral class.
NOTE: Eps Aur chart is available here
| DESIG. |
STAR |
TYPE |
MAX - MIN |
PERIOD
(days)
|
SPECTRUM |
| 0016-20 |
T CET |
SRb |
5.1 - 7.1 v |
159 |
M5EIIS |
| 0022+17 |
TV PSC |
SR |
4.7 - 5.4 V |
49.1 |
M3III |
| 0022-12 |
AG CET |
SRb |
6.99 - 7.45 V |
90: |
M3 |
| 0039+40 |
EG AND |
? |
7.08 - 7.8 V |
40.5 |
GM2E |
| 0050+60* |
GAMMA CAS |
G CAS |
1.6 - 3.0 V |
|
B0.5IVPE |
| 0243-12 |
Z ERI |
SRb |
6.3 - 7.9 v |
80 |
M4III |
| 0247-08 |
RR ERI |
SRb |
6.8 - 8.2 v |
97 |
M5III |
| 0250+17 |
RZ ARI |
SRb |
5.6 - 6.0 V |
30 |
M6IIl |
| 0258+38 |
RHO PER |
SRb |
3.3 - 4.0 V |
50: |
M4IIB-IIIA |
| 0349+30 |
X PER |
G CAS |
6.1 - 7.0 V |
|
O9.5PE(Q) |
| 0526+18 |
CE TAU |
SRc |
4.2 - 4.5 V |
165 |
M2IB M2IAB-IB |
| 0549+07 |
ALPHA ORI |
SRb |
0.0 - 1.3 V |
2070 |
M2EIAB |
| 0600-16 |
SS LEP |
Z AND? |
4.82 - 5.06 V |
|
A0VEQ+GM1 |
| 0608+22 |
ETA GEM |
SRb(E) |
3.15 - 3.9 V |
232.9 |
M3III |
| 0643+32 |
IS GEM |
SRd |
5.5 - 6.6 v |
47: |
GK3 |
| 0656-03 |
V614 MON |
SRb |
7.25 - 7.6 V |
60: |
R5(C4,5J) |
| 0710+82 |
VZ CAM |
SR |
4.9 - 5.4 v |
23.7 |
M4IIIA |
| 0710+69 |
RU CAM |
C |
8.1 - 9.7 V |
21.5 |
K0-R2 |
| 0710-26B |
EW CMA |
G CAS |
4.3 - 4.65 V |
|
B4VPE+B8 |
| 0726-09 |
U MON |
RVb |
5.5 - 7.7 v |
92.3 |
F8EIB-K0PIB |
| 0835-16 |
AK HYA |
SRb |
6.3 - 6.9 V |
112? |
M4III |
| 0904+31 |
RS CNC |
SRc? |
5.1 - 6.9 v |
120 |
M6EIB-II(S) |
| 0915+00 |
IN HYA |
SRb |
6.27 - 6.75 V |
45: |
GM4 |
| 1038+67 |
VY UMA |
Lb |
5.9 - 7.0 V |
|
C6.3 |
| 1052+70 |
VW UMA |
SR |
6.9 - 7.7 V |
125 |
M2 |
| 1140+36 |
TV UMA |
SRb |
6.7 - 7.7 v |
50.4 |
M5III |
| 1154+19 |
GK COM |
SRb |
6.84 - 7.13 V |
50 |
GM4 |
| 1301+23 |
FS COM |
SRb |
5.5 - 6.1 |
58: |
M5III |
| 1308-02 |
SW VIR |
SRb |
6.9 - 7.9 V |
150? |
M7III |
| 1311+07 |
FH VIR |
SRb |
6.92 - 7.4 V |
70 |
M6III |
| 1330+08 |
FP VIR |
SRb |
6.72 - 7.35 V |
55: |
GM4 |
| 1407-13 |
EV VIR |
SRb |
6.74 - 7.09 V |
120 |
MB |
| 1439+26 |
W BOO |
SRb: |
4.7 - 5.4 v |
30: |
M3III |
| 1531+15 |
TAU4 SER |
Lb |
6.0 - 7.5 v |
100 |
M5IIB-IIIA |
| 1547+48 |
ST HER |
SRb |
7.0 - 8.5 v |
148.0 |
M6IIIAS |
| 1615+60 |
AT DRA |
Lb |
5.3 - 6.2 v |
|
M4IIIA |
| 1623-26 |
ALPHA SCO |
SRa |
0.88 - 1.8 V |
1733 |
M1-M2IAB |
| 1642+72 |
AZ DRA |
Lb |
6.7 - 7.9 v |
|
M2 |
| 1715+60 |
VW DRA |
SRd |
6.0 - 7.0 V |
170: |
G9 |
| 1730-32 |
V449 SCO |
? |
6.7 - 7.3 v |
|
A2V |
| 1747-02 |
V533 OPH |
SR |
7.2 - 8.5 v |
32: |
M6 |
| 1751+26 |
V441 HER |
SRd |
5.34 - 5.54 V |
68 |
F2IBA |
| 1755+04 |
V2048 OPH |
G CAS |
4.55 - 4.85 V |
|
B2-B6VNEV |
| 1822+00 |
d SER |
? |
4.9 - 5.9 |
|
G0III+A6V |
| 1826+21 |
AC HER |
RVa |
7.0 - 9.0 v |
75.5 |
F2PIB-K4E(C0.0) |
| 1846+52* |
CX DRA |
G CAS |
5.68 - 5.99 V |
|
B2.5VE |
| 1852+43 |
R LYR |
SRb |
3.88 - 5.0 V |
46.0 |
M5III |
| 1921+50 |
CH CYG |
Z AND |
6.4 - 8.7 V |
97 |
M7IIIAB+B |
| 1941+40 |
V973 CYG |
SRb |
5.8 - 7.0 v |
40: |
M3.4IIIAB |
| 1946+22* |
V395 VUL |
G CAS |
4.78 - 4.97 V |
|
B2.5VE |
| 2000+56 |
NSV 12759 (CYG) |
? |
7.4 - 8.2 v |
|
A0V |
| 2014+37A* |
P CYG |
S DOR |
3 - 6 V |
|
B1IAPEQ |
 2033+17B |
EU DEL |
SRb |
5.8 - 6.9 V |
59.5 |
M6III |
| 2040+17 |
U DEL |
SRb |
5.9 - 7.7 v |
110? |
M5II |
| 2056+47 |
V832 CYG |
G CAS |
4.49 - 4.88 V |
|
B1.5VENN |
| 2116+55 |
FZ CEP |
SR |
6.9 - 8.0 v |
|
M7 |
| 2118+40 |
V1070 CYG |
SR? |
6.7 - 7.7 |
73.5 |
M7III |
 2132+44 |
W CYG |
SRb |
5.5 - 7.0 v |
126.3 |
M4E-M6E |
| 2132+31 |
AB CYG |
SRb |
7.3 - 9.2 v |
520 |
M4EIII |
| 2138+45 |
V1339 CYG |
SRb? |
5.9 - 7.1 V |
35? |
M3-M6 |
| 2140+58 |
MU CEP |
SRc |
3.43 - 5.1 V |
730 |
M2EIA |
 2200+46 |
HK LAC |
RS CVN |
6.77 - 7.04 V |
25.3 |
K0III-IVP |
| 2204+45* |
AR LAC |
RS CVN |
6.08 - 6.77 |
1.98 |
G5 |
| 2206+72 |
DM CEP |
Lb |
6.9 - 8.4 v |
|
M4 |
| 2229+56 |
NSV 14213 (LAC) |
L |
5.6 - 6.8 V |
|
G8III-IV |
| 2248+16* |
IM PEG |
RS CVN |
5.60 - 5.85 V |
24.44 |
K1-2II-IIIE |
| 2252+48 |
EW LAC |
G CAS |
4.6 - 5.5 v |
|
B3III-IVPEV |
| 2255+56 |
V509 CAS |
SR? |
4.98 - 5.20 V |
|
G0E-G4IA |
| 2257+41* |
OMICRON AND |
G CAS |
3.58 - 3.78 V |
|
B6E |
| 2302+49* |
KX AND |
G CAS |
6.93 - 7.05 V |
|
BPE |
| 2308+02 |
SZ PSC |
RS CVN |
8.02 - 8.69 B |
3.96 |
K1IV-V+F8V |
| 2311-08 |
CHI AQR |
Lb |
4.9 - 5.3 V |
|
M3III |
| 2332+45 |
LAMBDA AND |
RS CVN |
3.69 - 3.97 V |
55.8 |
G8III-IV |
| 2341+02 |
TX PSC |
Lb |
4.6 - 6.1 v |
|
N0(C6,2) |
| 2349+56 |
RHO CAS |
SRd |
4.1 - 6.2 V |
|
F8P-K5P |
| 2349-00 |
XZ PSC |
Lb |
5.61 - 5.97 V |
|
M5IIB |
| 2350+28* |
II PEG |
RS CVN |
7.18 - 7.78 V |
6.7 |
K2IV-VIII |
Blue-Red Pair in AQUARIUS for Transformation Constants
Blue-Red Pair in LEO MINOR for Transformation Constants
Blue-Red Pair in OPHIUCHUS for Transformation Constants
Blue-Red Pair in ORION for Transformation Constants
* Denotes additions to chart list since 1983
Colored symbols show stars that share a chart
The AAVSO Catalog of Photoelectric Photometry Charts and the charts listed above may be obtained from AAVSO Headquarters at this address:
AAVSO
25 Birch Street
Cambridge, MA 02138
USA
Prices (including postage) are:
AAVSO Catalog of PEP Charts - $1.00
Charts (apiece) - $0.25
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