Phase
II Notes (last update: 23/07/2012)
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General
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CVs
can, by definition, undergo large brightness variations,
hence, scheduling these observations and complying with the
COS BOL policies is somewhat challenging. WZ Sge type dwarf
novae outburst very rarely, SU UMa type dwarf novae mor
frequently so. The long-period dwarf novae selected for this
program all outburst rarely. VY Scl/SW Sex stars are usually
in a bright state with a high accretion rate, but
occasionally fade by several magnitudes. It is during these
low states that the white dwarf is visible, and the HST
observations should be on hold until a low state is
detected. Most of the targets below outburst rarely, some of
them have never been seen in outburst. Where available, I
include links to the long-term light curves from the AAVSO
and/or the Catalina Real Time Transient Survey.
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Notes
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Systems marked in green
should represent no problems in their implementation.
Systems marked in red have no archival UV fluxes, and we are
submitting a Swift DDT to rectifiy this situation. Systems
marked in orange may need Swift UV data as well. Systems
marked in yellow are "on hold", and will only be released if
a low state is detected. |
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| V485-Cen |
Ultra-short period CV with an
evolved donor star (1993A&A...267L..55A,
1996A&A...311..889A).
Superoutbursts in 1997, 2001, 2004, 2008, 2011 (2009PASJ...61S.395K).
Observed with STIS (O8MZ33010)
as part of our Cycle 12/13 snapshot, revealing a cool white
dwarf - the COS observations will allow a quantitative
analysis. Reliable GALEX fluxes.
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| GW-Lib |
Short-period WZ Sge type
dwarf nova, outbursts every few decades (1987, 2007: 2011PASP..123.1156V),
not due for another ten years or more. Contains a pulsating
white dwarf, observed several times with HST before (2002ApJ...575L..79S,
2012ApJ...753..158S).
The COS observations here will track how the pulsations
evolve following the 2007 outburst, when the white dwarf was
heated by several 1000K. CRTS
light curve.
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| SDSS1435+2336 |
Short-period WZ Sge type
dwarf nova found by SDSS (2007AJ....134..185S,
SDSS
data), no outburst ever observed. The optical spectrum
is dominated by the white dwarf, and it is guaranteed that
this is also the case for the FUV. Good GALEX data, should
cause no worries. CRTS
light curve. |
| SDSS0137-0912 |
Short-period WZ Sge type
dwarf nova found by SDSS (2003AJ....126.1499S,
SDSS
data). Superoubursts in Dec 2003 (2006PASJ...58..143I)
& Jan/Feb 2009, a (normal?) outburst in Dec 2012. The
optical spectrum is dominated by the white dwarf, and it is
guaranteed that this is also the case for the FUV. No GALEX observations - we
have obtained Swift UVOT NUV fluxes. AAVSO
light curve, CRTS
light curve. |
| 1RXS-J105010.3-140431 |
A short-period WZ Sge type
dwarf nova with a beautiful white dwarf in the optical (2001A&A...376..448M,
2002MNRAS.336..767M).
No recorded outburst to my knowledge, CRTS
light curve. No
GALEX observations, we have obtained Swift UVOT NUV
fluxes. |
| SDSS1238-0339 |
Short-period WZ Sge type
dwarf nova found by SDSS (2003AJ....126.1499S,
SDSS
data), no outburst ever observed. The optical spectrum
is dominated by the white dwarf, and it is guaranteed that
this is also the case for the FUV. Shows low-level activity
in the optical (2006A&A...449..645Z),
which should not cause any significant brightening in the
UV. Good GALEX data, should cause no worries. AAVSO
light curve, CRTS
light curve. |
| ASAS0025+12 |
(aka FL Psc) A short-period
WZ Sge type dwarf nova, detected in a single superoutburst
in 2004 (2006PASP..118..236T).
Reliable GALEX fluxes, should be no problem. CRTS
light curve. |
| PU-CMa |
Short-period SU UMa type
dwarf nova (2003MNRAS.339..861K,
2003PASP..115...37T),
superoutbursts in 2003, 2005, 2008 (2009PASJ...61S.395K).
No GALEX observations, we have
obtained Swift UVOT NUV fluxes. |
| DT-Oct |
Short-period SU UMa type
dwarf nova (2002A&A...396..929K,
2004MNRAS.347..861K),
regular outbursts every 40-60 days. Two FUSE observations (G925120100,
G9251202000),
which are described in 2009ApJ...701.1091G.
No GALEX fluxes, we have obtained
Swift UVOT NUV fluxes.
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| V1108-Her |
(aka Var04 Her) Short-period
WZ Sge type dwarf nova (2004PASP..116.1117P),
one outburst recorded in 2004. Has a nearby red visual
companion, we just obtained u-band images to refine the
coordinates of the target. No GALEX observations, we have obtained Swift UVOT
NUV fluxes. |
| SDSS1035+0551 |
Short-period WZ Sge type
dwarf nova found by SDSS (2006AJ....131..973S,
SDSS
data), no outburst ever observed. The optical spectrum
is dominated by the white dwarf, and it is guaranteed that
this is also the case for the FUV. Good GALEX data, should
cause no worries. Rather faint, hence five orbits. This
system is eclipsing,
hence the target acquisition has to be scheduled to avoid
the eclipse, see HST program 11621
for a similar case. T(0, BMJD)=53798.981469(8),
Porb(d)=0.0570067(2) (2008MNRAS.388.1582L). |
| CC-Scl |
(aka EC23128-3105,
CTCVJ2315-3048)Short-period SU UMa type dwarf nova (2001MNRAS.325...89C,
2004MNRAS.354..321),
good GALEX data, should cause no problems. |
| SDSS0755+1435 |
Short-period WZ Sge type
dwarf nova found by SDSS (2007AJ....134..185S,
SDSS
data), no outburst ever observed. The optical spectrum
is dominated by the white dwarf, and it is guaranteed that
this is also the case for the FUV. Good GALEX data, should
cause no worries. CRTS
light curve. |
| QZ-Lib |
(aka ASAS1536-08) A
short-period WZ Sge type dwarf nova, detected in a single
superoutburst in 2004 (2004IBVS.5508....1S).
CRTS
light curve. No
GALEX observations, we have obtained Swift UVOT NUV
fluxes. |
| ASAS1600-48 |
A short-period WZ Sge type
dwarf nova, detected in a single superoutburst in 2005 (2006PASJ...58L..19I,
2009PASJ...61..395S).
Good GALEX fluxes, should cause no problem. |
| MR-UMa |
(aka RXJ1131.2+4322)
Short-period SU UMa type dwarf nova with ~yearly
superoutbursts (1997ChA&A..21..146W,
1997ChA&A..21..146W).
CRTS
light curve.Good GALEX fluxes, should cause no
problem.
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| SDSS1538+5123 |
Short-period SU UMa type
dwarf nova (2004AJ....128.1882S),
no recorded outburst to our knowledge. CRTS
light curve. Good GALEX fluxes, should cause no
problem.
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| SDSS0932+4725 |
Short-period SU UMa type
dwarf nova (2004AJ....128.1882S,
2006AJ....131..562H),
one outburst detected by VSNET in March 2011. CRTS
light curve. Good GALEX data, should cause no worries.
Rather faint, hence five orbits. This system is eclipsing,
hence the target acquisition has to be scheduled to avoid
the eclipse, see HST program 11621
for a similar case. T(0, BJD)=2453106.68411(2) +
E*0.06630354(5) (see 2012arXiv1202.0689S). |
| 1RXS-J023238.8-371812 |
A short-period WZ Sge type
dwarf nova, detected in a single superoutburst in 2007 (2009PASJ...61S.395K).
Good GALEX fluxes, should cause no problem. |
| BB-Ari |
(aka NSV907) Short-period SU
UMa type dwarf nova, rarely outbursting (2009PASJ...61S.395K).
CRTS
light curve. No
GALEX observations, we have obtained Swift UVOT NUV
fluxes. |
| IY-UMa |
Short-period SU UMa type
dwarf nova (2000PASJ...52L...9U),
superoutbursts in 2000, 2002, 2004, 2006, 2007, 2009 (2009PASJ...61S.395K),
CRTS
light curve. This system is eclipsing,
hence the target acquisition has to be scheduled to avoid
the eclipse, see HST program 11621
for a similar case. T(0, HJD)=2451570.85376(2) +
E*0.07390897(5)E (see 2003MNRAS.339..810S).
Good GALEX fluxes, should cause no problem. |
| RZ-Leo |
Short-period SU UMa type
dwarf nova (1999A&A...352..239M,
2001PASJ...53..905I).
Rare outbursts (2000, 2006: 2009PASJ...61S.395K)
CRTS
light curve. White dwarf visible in the optical (SDSS).
Good GALEX fluxes, should be no problem.
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| SDSS1005+1911 |
Short-period WZ Sge type
dwarf nova found by SDSS (2009AJ....137.4011S,
SDSS
data), one outburst in April 2011. The optical
spectrum is dominated by the white dwarf, and it is
guaranteed that this is also the case for the FUV. Good
GALEX data, should cause no worries. |
| CU-Vel |
Short-period SU UMa type
dwarf nova, observed with IUE (SWP54235,
LWP30314,
published in 1999A&A...346..151G).
Good GALEX fluxes, should cause no problem. |
| SDSS1642+1347 |
Short-period SU UMa type
dwarf nova (2007AJ....134..185S),
rare outbursts: CRTS
light curve.Good GALEX fluxes, should be no problem.
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| AX-For |
(aka 2QZ J021927.9-304545)
Short-period SU UMa type dwarf nova (2006PASJ...58..383I),
superoutbursts observed in 2005, 2009, possibly 2007. Good
GALEX fluxes, should cause no problem.
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| QZ-Ser |
CV with an evolved donor star
(2002PASP..114.1117T),
also in SDSS (2007AJ....134..185S,
SDSS
data)Rare outbursts. Observed with STIS (O8MZ17010)
as part of our Cycle 12/13 snapshot, revealing a cool white
dwarf - the COS observations will allow a quantitative
analysis. Reliable GALEX fluxes. AAVSO
light curve, CRTS
light curve. Should cause no problem.
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| IR-Com |
Short-period SU UMa type
dwarf nova (1997A&A...325..994R,
2002PASJ...54...79K).
CRTS
light curve. This system is eclipsing,
hence the target acquisition has to be scheduled to avoid
the eclipse, see HST program 11621
for a similar case, T(0, HJD)=2449486.4818691(26) +
E*0.08703862787(20) (see 2005MNRAS.364.1158F).
Good GALEX data, should cause no problem.
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| SDSS0011-0647 |
Dwarf nova in the period gap,
with an evolved donor star (unpublished, SDSS
data), one outburst detected in the CRTS
light curve. Good GALEX fluxes, should be no problem.
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| HS0728+6738 |
VY Scl/SW Sex star - no
historic low state known (2004A&A...424..647R)
CRTS
light curve. This system is eclipsing,
hence the target acquisition has to be scheduled to avoid
the eclipse, see HST program 11621
for a similar case. The ephemeris will be updated asap.
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| HS0357+0614 |
VY Scl/SW Sex star (2007MNRAS.377.174R).
CRTS
light curve. Low state in 2005
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| LN-UMa |
VY Scl/SW Sex star (2007MNRAS.374.1359R).
Several historic low states (1998AJ....115.2044H,
2004AJ....128.1279H)
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| HS0455+8315 |
VY Scl/SW Sex star (2007MNRAS.377.174R).
No historic low state
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| BB-Dor |
VY Scl/SW Sex star (2004AJ....128.1279H,
2012MNRAS.422.2332R),
observed with FUSE (H9030301000,
published in 2008ApJ...687..532G).
Low state in 2009 |
| HS0220+0603 |
VY Scl/SW Sex star (2007MNRAS.377.174R)
CRTS
light curve. Low state in 2004/2005
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| V380-Oph |
VY Scl/SW Sex star (2007MNRAS.374.1359R).
Was observed with HST/STIS during the high state (O6LI86010,
published in 2008ApJ...687..532G).
Several historic low states.
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| SDSS0407-0644 |
Long-period dwarf nova (2003AJ....126.1499S,
2005PASA...22..105A)
CRTS
light curve. This system is eclipsing,
hence the target acquisition has to be scheduled to avoid
the eclipse, see HST program 11621
for a similar case. T(0, HJD)= 2452949.1504(6) +
E*0.17017(3) (see 2005PASA...22..105A).
Good GALEX data, should cause no problem. |
| CW-Mon |
Long-period dwarf nova (2003PASJ...55..491K).
Observed with IUE (SWP32793,
SWP27112,
LWP07100)
Should be no problem.
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| V405-Peg |
(aka 1RXSJ230949.6+213523,
SDSSJ230949.12+213516.7) Long-period dwarf nova (2002A&A...396..895S, 2009PASP..121..465T).
CRTS
light curve. Good GALEX data, should be no problem.
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| HS2214+2845 |
Long-period dwarf nova (2006A&A...455..659A).
CRTS
light curve. Good GALEX data, should be no problem.
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| BD-Pav |
Long-period dwarf nova,
observed with STIS (O6LI0C010,
published in (2008ApJ...681..543S).
Should be no problem.
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| SDSS1006+2337 |
Long-period dwarf nova (2007AJ....134..185S,
2009A&A...507..929S).
CRTS
light curve. This system is eclipsing,
hence the target acquisition has to be scheduled to avoid
the eclipse, see HST program 11621
for a similar case. T(0, HJD)= 2454540.57968(40) +
E*0.18591324(42) (see 2009A&A...507..929S).
The GALEX fluxes look
suprprisingly faint - maybe it would be a good idea to
include this one in the Swift DDT.
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| HM-Leo |
(aka PG0935+075) Long Period
dwarf nova, observed with IUE (SWP41626,
LWP20369).
CRTS
light curve. Good GALEX fluxes, should be no problem.
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| SDSS1544+2553 |
Long-period dwarf nova (2009AJ....137.4011S,
2011PASP..123..259S).
CRTS
light curve. This system is eclipsing,
hence the target acquisition has to be scheduled to avoid
the eclipse, see HST program 11621
for a similar case. T(0, HJD)= 2454878.0062(15) +
E*0.251282(2) (see 2011PASP..123..259S).
No GALEX observations,
we have obtained Swift NUV fluxes. |
| HS0218+3229 |
Long period dwarf nova (2009A&A...496..805R).
CRTS
light curve. Good GALEX fluxes, should be no problem.
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| HS1055+0939 |
Long period dwarf nova (2006OEJV...37....1G,
2010PASP..122.1285T).
CRTS
light curve. Good GALEX data, should be no problem
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