1994PASP..106.1141P

Query : 1994PASP..106.1141P

1994PASP..106.1141P - Publ. Astron. Soc. Pac., 106, 1141-1150 (1994/November-0)

Superhumps in cataclysmic binaries. III. V795 Herculis.

PATTERSON J. and SKILLMAN D.R.

Abstract (from CDS):

We report photometry of the cataclysmic variabla V795 Herculis during 1990-94. Comparison of recent with previously published data shows that the 2.78 hr periodicity has essentially disappeared; the amplitude has diminished by a factor of at least 10. In its place, there is a low-amplitude signal near the radial-velocity (orbital?) period of 2.60 hr.

During 1983-89, the star did show an obvious 2.78 hr signal. We study the published data on this signal, together with our own data under the (questionable) assumption that the signal still exists with an amplitude too small to survive the rigors of unbiased period detection. The data are really too sparse and too poorly distributed to decide the issue of phase stability. But since the photometric signal is transient and exceeds the likely orbital period by ∼8%, the photometric waves are likely to be yet another example of "superhumps," the phenomenon made famous by dwarf novae in superoutburst.

At high frequencies, the star shows a quasi-periodic signal with P ∼1160 s, and possibly also a stable signal with P = 1310.2 s (or 1330.4 s, the one-day alias). The beat period between these signals could be the orbital period, or that of the vanished superhump.


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Journal keyword(s):

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* V795 Her CV* 17 12 56.1689188488 +33 31 19.240640724   12.53 12.64 12.69   ~ 191 0

Query : 1994PASP..106.1141P

Basic data :
V* V795 Her -- Cataclysmic Binary
Other object types: otypes_help 		CV* (2012A&A), * (FBS,TYC,...), V* (1SWASP,V*,...), blu (2019A&A), X (2RXP,1RXS), SB* (SBC9), CV? (2021ApJS), HS? (2019A&A), Em* (2020A&A), UV (PG), NIR (2MASS), Opt (LAMOST)
ICRS coord. (ep=J2000) : 		17 12 56.1689188488 +33 31 19.240640724 (Optical) [ 0.0141 0.0154 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		17 11 05.7182927778 +33 34 48.385338694 [ 0.0141 0.0154 90 ]
Gal coord. (ep=J2000) : 		056.6591414332765 +34.1238380473277 [ 0.0141 0.0154 90 ]
Proper motions mas/yr : 		2.442 -18.238 [0.019 0.021 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 46.01 [7.14] / z(spectroscopic) 0.000153 [0.000024] / cz 46.01 [7.14]
   (Opt) D 2023ApJS..264...17Z
Parallaxes (mas): 		1.7455 [0.0181] A 2020yCat.1350....0G
Fluxes (7) :
B 12.53 [0.19] D 2000A&A...355L..27H
V 12.64 [0.23] D 2000A&A...355L..27H
R 12.69 [~] D 2007A&A...467..785N
G 13.023641 [0.006411] C 2020yCat.1350....0G
J 12.854 [0.021] C 2003yCat.2246....0C
H 12.873 [0.024] C 2003yCat.2246....0C
K 12.797 [0.026] C 2003yCat.2246....0C
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Identifiers (20) :
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SV* SVS 2613 LAMOST J171256.16+333119.2 1RXS J171257.3+333125 V* V795 Her
FBS 1711+336 2MASS J17125617+3331193 SBC9 952 WEB 14221
FBS B 595 PG 1711+336 1SWASP J171256.18+333119.2 AAVSO 1709+33
FBS 1711+335 PG 1711+33 TIC 9464138 Gaia DR3 1334848936218459136
LAMOST J171256.17+333119.4 2RXP J171256.0+333121 TYC 2595-676-1 Gaia DR2 1334848936218459136

References (191 between 1850 and 2026) (Total 191)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 3    Distance : 3    Var : 3    Plx : 2    PM : 3   

   

Observing logs
IUE : 51   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Link by name to the catalogue in VizieR :

FBS 1711+336 FBS B 595 FBS 1711+335 2MASS J17125617+3331193 PG 1711+336
PG 1711+33 1RXS J171257.3+333125 TYC 2595-676-1 V* V795 Her Gaia DR3 1334848936218459136
Gaia DR2 1334848936218459136

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