Last modified on
The Big List of SW Sextantis Stars
D. W. Hoard (Spitzer Science Center/California Institute of Technology)
|
The SW Sextantis stars are a sub-class of
cataclysmic variables (CVs)
that share a number of characteristic observational properties
(e.g., transient absorption in their emission line cores that
appears at specific orbital phases, single-peaked emission lines
rather than the double-peaked lines characteristic of disk-accreting
CVs, indications of very high mass transfer rate, etc –
follow this link for a
more complete and detailed list of the observational characteristics of
the SW Sex stars). Although
studied individually for a number of years, the SW Sex stars
were first identified as an observationally similar group in the
early 1990s.
Contents:
If the material presented here has aided in the completion of your
research project, then I would appreciate the inclusion of the
following citations in any corresponding publications:
Latest Updates:
|
Current Orbital Period Distribution of SW Sex Stars
Note: links on this page are shown in purple text (except for the word purple, which is not a link).
Jump to Target:
| And–Aur: | PX And | CZ Aql | UU Aqr | HL Aqr | V1315 Aql | OY Ara | TT Ari |
| WX Ari | V363 Aur | ||||||
| Cae–Cyg: | LS Cam | AC Cnc | BO Cet | RR Cha | V1776 Cyg | ||
| Gem–Gru: | DM Gem | ||||||
| Her–Hyi: | V533 Her | V795 Her | V1084 Her | EX Hya | |||
| Lac–Lyr: | CP Lac | BH Lyn | BP Lyn | ||||
| Men–Mus: | AH Men | BT Mon | |||||
| Oct–Ori: | V380 Oph | V442 Oph | |||||
| Pav–Pyx: | LS Peg | V Per | AH Pic | RR Pic | AO Psc | V347 Pup | V348 Pup |
| Sge–Sex: | WY Sge | VZ Scl | LX Ser | SW Sex | |||
| Tau–Tuc: | RW Tri | TT Tri | |||||
| UMa–UMi: | DW UMa | LN UMa |
| HS 0220+0603 | KUV 03580+0614 | HS 0455+8315 |
| HS 0506+7725 | HS 0728+6738 | SDSS J080908.39+381406.2 |
| SDSS J132723.39+652854.2 | SDSS J210131.26+105251.5 | HS 1813+6122 |
| BT Monocerotis Nova Mon 1939 |
Definite |
cvcat
SIMBAD |
1998MNRAS.296..465S [a]
1996ApJ...456..777W [b] |
|
Porb (hr): |
8.0115 |
Eclipses: |
Deep |
Distance (pc): |
1700(300)[a] | ||
Superhumps: |
... |
QPOs (s): |
∼1800[a] |
|
|||
Magnetic: |
P?/IP?[a,b]† |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Distance from inferred brightness of G8 V (or earlier) secondary star.[a] | ||||||
| V363 Aurigae Lanning 10 |
Definite |
cvcat
SIMBAD |
2004MNRAS.353.1135T [a]
1986ApJ...307..760S [b] |
|
Porb (hr): |
7.7098 |
Eclipses: |
Deep |
Distance (pc): |
700(250)[a] | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Distance from inferred brightness of G7±2 V secondary star.[a] | ||||||
| AC Cancri SVS 1280 |
Probable |
cvcat
SIMBAD |
2004MNRAS.353.1135T [a] | |
Porb (hr): |
7.2115 |
Eclipses: |
Deep |
Distance (pc): |
550(150)[a] | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Transient absorption in emission lines is weak.[a] | ||||||
| V347 Puppis Pup2 LB 1800 |
Probable |
cvcat
SIMBAD |
2005MNRAS.357..881T [a]
1999ApJ...523..786D [b] 1998MNRAS.299..545S [c] 1994ApJ...424..347M [d] 1990ApJ...355..617B [e] |
|
Porb (hr): |
5.5665 |
Eclipses: |
Deep |
Distance (pc): |
510(16)[b] | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Possible weak transient absorption around φ≈0.4 in Hβ, Hγ, He I λ4471, and (to an even lesser degree) He II λ4686 emission lines.[a,e] | ||||||
| RW Trianguli |
Possible |
cvcat
SIMBAD |
2004A&A...417..283G [a]
1995MNRAS.273..849S [b] 1983ApJ...267..239K [c] |
|
Porb (hr): |
5.5652 |
Eclipses: |
Deep |
Distance (pc): |
341(+38/-31)‡ | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•SW Sex characteristics during bright states.[a] | ||||||
| CZ Aquilae |
Possible |
cvcat
SIMBAD |
2007arXiv0704.0948S [a] | |
Porb (hr): |
4.812[a] |
Eclipses: |
None? |
Distance (pc): |
... | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•No transient absorption detected in the (optical) He I emission lines.[a] | ||||||
| LS Pegasi Peg2 S193 NSV 13903 |
Definite |
cvcat
SIMBAD |
2001AJ....121.2761S [a]
2001ApJ...548L..49R [b] 1999MNRAS.305..661M [c] 1999PASP..111..184T [d] |
|
Porb (hr): |
4.1946 |
Eclipses: |
None |
Distance (pc): |
... | ||
Superhumps: |
... |
QPOs (s): |
1242(18)[d] |
∼1140[a] |
|||
Magnetic: |
IP?[b] |
B (MG): |
5–15[b] |
Pspin (s): |
1776(108)[b] | ||
Notes: |
| ||||||
| V1776 Cygni Lanning 90 |
Probable |
cvcat
SIMBAD |
1998PhDT........10H [a]
1990ApJ...365..696G [b] 1983PASP...95..206S [c] |
|
Porb (hr): |
3.9537 |
Eclipses: |
Deep |
Distance (pc): |
... | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
| ||||||
| UU Aquarii S196 |
Definite |
cvcat
SIMBAD |
2000MNRAS.314..713B [a]
1998ApJ...499..444K [b] 1998MNRAS.294..689H [c] 1994ApJ...433..332B [d] 1991AJ....102.1417D [e] |
|
Porb (hr): |
3.9259 |
Eclipses: |
Deep |
Distance (pc): |
207(10)† | ||
Superhumps: |
positive‡ |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
†This distance from physical parameter eclipse mapping (see 2002AN....323...75V). | ||||||
| LX Serpentis Stepanyan&apos |
Possible |
cvcat
SIMBAD |
1984PASP...96..372E [a]
1981ApJ...244..259Y [b] 1980ApJ...242L.167H [c] |
|
Porb (hr): |
3.8024 |
Eclipses: |
Deep |
Distance (pc): |
340† | ||
Superhumps: |
... |
QPOs (s): |
∼140[a]‡ |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
†This distance is adopted from estimates by several methods (e.g., accretion disk model, secondary star contribution, etc; see 1992A&A...260..213R). | ||||||
| BH Lyncis PG 0818+513 |
Definite |
cvcat
SIMBAD |
2006A&A...455..223S [a]
1997ApJ...481..433H [b] 1992MNRAS.258..225D [c] |
|
Porb (hr): |
3.7410 |
Eclipses: |
Deep |
Distance (pc): |
... | ||
Superhumps: |
positive† |
QPOs (s): |
1030?‡ |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
†See 2005PASP..117.1204P. | ||||||
| OY Arae Nova Ara 1910 HD 149990 |
Possible |
cvcat
SIMBAD |
1997ApJ...483..899Z [a] | |
Porb (hr): |
3.7312 |
Eclipses: |
Deep |
Distance (pc): |
∼3800[a] | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Distance from disk and mid-M V secondary star absolute magnitude estimates.[a] | ||||||
| V380 Ophiuichi |
Definite |
cvcat
SIMBAD |
2007MNRAS.374.1359R [a]
2005ASPC..330..495SR [b] 1985AJ.....90..643S [c] |
|
Porb (hr): |
3.6986[a] |
Eclipses: |
None?[a,b] |
Distance (pc): |
... | ||
Superhumps: |
negative?[a,b] |
QPOs (s): |
2802(6)[a]† |
|
|||
Magnetic: |
IP?[a] |
B (MG): |
... |
Pspin (s): |
...‡ | ||
Notes: |
†This QPO manifests as (optical) emission line flaring and could be related to the spin of a magnetic WD; however, its long-term coherence has not yet been established.[a] | ||||||
| WY Sagittae Nova Sge 1783 |
Possible |
cvcat
SIMBAD |
1997MNRAS.284..359S [a]
1996MNRAS.278..845S [b] 1984ApJ...282..763S [c] |
|
Porb (hr): |
3.6872 |
Eclipses: |
Deep |
Distance (pc): |
700–1800[b] | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Distance estimate from Bailey's method (lower limit)[b] and eclipse of M3.5-4.5 V[c] secondary star (upper limit)[b]. | ||||||
| BP Lyncis Lyn1 PG 0859+414 |
Definite |
cvcat
SIMBAD |
1996ApJ...470.1052H [a]
1996MNRAS.282..943S [b] 1994AJ....108..214G [c] |
|
Porb (hr): |
3.6675 |
Eclipses: |
Shallow† |
Distance (pc): |
≈150[a] | ||
Superhumps: |
... |
QPOs (s): |
25.5‡ |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Distance from WD model fit to optical continuum slope (plus disk component) and Balmer absorption line wings.[a] | ||||||
| AO Piscium H 2252-035 |
Possible |
cvcat
SIMBAD |
2007ApJ...656..444H [a]
2005ApJ...626.1028H [b] |
|
Porb (hr): |
3.5910 |
Eclipses: |
None |
Distance (pc): |
... | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
IP[b] |
B (MG): |
... |
Pspin (s): |
≈805[b] | ||
Notes: |
| ||||||
| KUV 03580+0614 Tau2 HS 0357+0614 |
Probable |
cvcat
SIMBAD |
2005ASPC..330..335R [a]
2001MNRAS.326.1235T [b] 2001PASP..113.1215S [c] |
|
Porb (hr): |
3.588 |
Eclipses: |
None[c] |
Distance (pc): |
... | ||
Superhumps: |
negative?[c] |
QPOs (s): |
... |
|
|||
Magnetic: |
IP?[c] |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
| ||||||
| HS 0220+0603 |
Definite |
cvcat
SIMBAD |
2007MNRAS.tmp..348R [a]
2005ASPC..330..335R [b] |
|
Porb (hr): |
3.5810[a] |
Eclipses: |
Deep[b,a] |
Distance (pc): |
... | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Shows unusual N II and Si II emission lines suggesting that the donor star may have experienced nuclear evolution via the CNO cycle.[a] | ||||||
| HS 0455+8315 |
Definite |
cvcat
SIMBAD |
2007MNRAS.tmp..348R [a]
2005ASPC..330..335R [b] 2002pcvr.conf..623G [c] |
|
Porb (hr): |
3.5694[a] |
Eclipses: |
Deep[a,b,c] |
Distance (pc): |
>430[c] | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•He II λ4686 and C III/N III Bowen blend are especially strong.[a] | ||||||
| HS 0506+7725 |
Possible |
cvcat
SIMBAD |
2005A&A...443..995A [a] | |
Porb (hr): |
3.54 |
Eclipses: |
None[a] |
Distance (pc): |
... | ||
Superhumps: |
... |
QPOs (s): |
∼600–1200[a] |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
| ||||||
| HS 1813+6122 |
Definite |
cvcat
SIMBAD |
2007MNRAS.tmp..348R [a]
2005ASPC..330..335R [b] |
|
Porb (hr): |
3.54[a] |
Eclipses: |
None[a,b] |
Distance (pc): |
... | ||
Superhumps: |
negative[a] |
QPOs (s): |
∼600–1200[a] |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
| ||||||
| V533 Herculis Nova Her 1963 |
Definite |
cvcat
SIMBAD |
2002MNRAS.337..209R [a]
2000MNRAS.312..629T [b] 1979ApJ...233L..13P [c] |
|
Porb (hr): |
3.53 |
Eclipses: |
None |
Distance (pc): |
1250(300)† | ||
Superhumps: |
... |
QPOs (s): |
63.63[c]‡ |
|
|||
Magnetic: |
IP?[a] |
B (MG): |
... |
Pspin (s): |
1399.8(94.8)?[a]* | ||
Notes: |
†Distance from observations of nova shell (see 2000MNRAS.314..175G). | ||||||
| PX Andromedae And1 PG 0027+260 |
Definite |
cvcat
SIMBAD |
2002A&A...394..625S [a]
1995MNRAS.273..863S [b] 1991AJ....102..272T [c] |
|
Porb (hr): |
3.5125 |
Eclipses: |
Deep |
Distance (pc): |
≫180[c] | ||
Superhumps: |
positive† |
QPOs (s): |
... |
|
|||
Magnetic: |
Not likely[b] |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Founding member. | ||||||
| CP Lacertae Nova Lac 1936 |
Possible |
cvcat
SIMBAD |
2005A&A...431..289R [a] | |
Porb (hr): |
3.4834 |
Eclipses: |
Shallow?[a]† |
Distance (pc): |
... | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
†Presence of shallow eclipses is tentatively sugggested, although based on only one such observed event.[a] | ||||||
| RR Pictoris Nova Pic 1925 Hen 3-15 |
Possible |
cvcat
SIMBAD |
2006PASP..118...84R [a]
|
2003MNRAS.342..145S [b]
1986MNRAS.219..751W [c] 1982A&A...109..171H [d] 1981MNRAS.195..101W [e] 1975A&A....41...15V [f] |
Porb (hr): |
3.4806 |
Eclipses: |
Shallow[f,c]† |
Distance (pc): |
380–490[d] | ||
Superhumps: |
... |
QPOs (s): |
20–40[e]* |
|
|||
Magnetic: |
No?†† |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Distance from cited references.[d] | ||||||
| VZ Sculptoris |
Possible |
cvcat
SIMBAD |
1999AAS...195.3612M [a]
1987MNRAS.225...43O [b] 1984MNRAS.206..859S [c] |
|
Porb (hr): |
3.4709 |
Eclipses: |
Deep |
Distance (pc): |
530[c] | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Distance from Bailey's method for an M2=0.35M⊙ secondary star.[c] | ||||||
| LN Ursae Majoris UMa7 PG 1000+667 |
Probable |
cvcat
SIMBAD |
2007MNRAS.374.1359R [a]
1998AJ....115.2044H [b] |
|
Porb (hr): |
3.466 |
Eclipses: |
None?[b] |
Distance (pc): |
... | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
| ||||||
| LS Camelopardalis HS 0551+7241 |
Probable |
cvcat
SIMBAD |
2005ASPC..330..335R [a]
1998AJ....115.1634D [b] |
|
Porb (hr): |
3.42 |
Eclipses: |
Maybe[b] |
Distance (pc): |
... | ||
Superhumps: |
... |
QPOs (s): |
≈3000?[b] |
|
|||
Magnetic: |
IP?[b] |
B (MG): |
∼10[b] |
Pspin (s): |
... | ||
Notes: |
| ||||||
| AH Pictoris EC 05565-5935 |
Probable |
cvcat
SIMBAD |
2007MNRAS.374.1359R [a]
2001MNRAS.325...89C [b] |
|
Porb (hr): |
3.41 |
Eclipses: |
None[b] |
Distance (pc): |
>240[b] | ||
Superhumps: |
... |
QPOs (s): |
∼600–1200[b] |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Distance from Bailey's method.[b] | ||||||
| RR Chamaeleontis Nova Cha 1953 S5346 |
Possible |
cvcat
SIMBAD |
2003MNRAS.342L...1R [a]
2002MNRAS.335...44W [b] |
|
Porb (hr): |
3.36 |
Eclipses: |
Deep[b] |
Distance (pc): |
... | ||
Superhumps: |
positive[b] |
QPOs (s): |
≈1950[b]† |
|
|||
Magnetic: |
IP[a,b] |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
†This QPO is believed to be related to the (magnetic) WD spin period, either directly or via reprocessing.[b] | ||||||
| BO Ceti Cet4 1H 0204-023 |
Definite |
cvcat
SIMBAD |
2007MNRAS.374.1359R [a] | |
Porb (hr): |
3.355 |
Eclipses: |
None |
Distance (pc): |
... | ||
Superhumps: |
... |
QPOs (s): |
1194(54)[a]† |
|
|||
Magnetic: |
IP?[a] |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
†This QPO manifests as (optical) emission line flaring, and is possibly related to the (magnetic) WD spin period.[a] | ||||||
| V1315 Aquilae KPD 1911+1212 |
Definite |
cvcat
SIMBAD |
1996ApJ...471..949H [a]
1995MNRAS.277..777D [b] 1993MNRAS.264..619S [c] 1991AJ....102..272T [d] 1986ApJ...301..240D [e] |
|
Porb (hr): |
3.3526 |
Eclipses: |
Deep |
Distance (pc): |
300† | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
... |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Founding member. | ||||||
| TT Trianguli HS 0129+2933 GR 286 |
Definite |
cvcat
SIMBAD |
2007MNRAS.tmp..348R [a]
2006PASP..118.1373W [b] |
|
Porb (hr): |
3.3513 |
Eclipses: |
Deep[a] |
Distance (pc): |
∼400–500[b] | ||
Superhumps: |
... |
QPOs (s): |
... |
|
|||
Magnetic: |
No?[b]‡ |
B (MG): |
... |
Pspin (s): |
... | ||
Notes: |
•Distance from comparison of the observed brightness and color at mid-eclipse with the photometric properties of the best-fitting model light curve.[b] | ||||||
| WX Arietis PG 0244+104 |
Definite | |||