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TOPIC: Z CamPaign
Blobrana


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Posts: 131433
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RE: Z CamPaign
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Title: The Z CamPaign: Year Five
Author: Mike Simonsen

Entering into the fifth year of the Z CamPaign, the author has developed a website summarizing our findings which will also act as a living catalog of bona fide Z Cam stars, suspected Z Cams and Z Cam impostors. In this paper we summarize the findings of the first four years of research, introduce the website and its contents to the public and discuss the way forward into year five and beyond.

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Blobrana


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Posts: 131433
Date:
Z Cam Stars
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Title: Z Cam Stars in the Twenty-First Century
Author: Mike Simonsen, David Boyd, Bill Goff, Tom Krajci, Kenneth Menzies, Sebastian Otero, Stefano Padovan, Gary Poyner, James Roe, Richard Sabo, George Sjoberg, Bart Staels, Rod Stubbings, John Toone, Patrick Wils

Z Cam stars are a small subset of dwarf novae that exhibit standstills in their light curves. Most modern literature and catalogs of cataclysmic variables quote the number of known Z Cams to be on the order of 30 or so systems. After a four-year observing campaign and an exhaustive examination of the data in the AAVSO International Database we have trimmed that number by a third. One of the reasons for the misclassification of some systems is the fact that the definition of what a Z Cam is has changed over the last 85 years to what it is today. This has caused many stars formerly assumed to be Z Cams or rumored to be Z Cams to be eliminated from the final list. In this paper we present the results of our investigation into 65 stars listed at one time or another in the literature as Z Cams or possible Z Cams.

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Blobrana


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Posts: 131433
Date:
RE: Z CamPaign
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Title: The Z CamPaign: Year 1
Authors: Mike Simonsen

The Cataclysmic Variable Section of the American Association of Variable Star Observers (AAVSO) has initiated an observing campaign to study a subset of dwarf novae (DNe), known as Z Cam type (UGZ). We call this program the Z CamPaign. Since there is no strong agreement between the various published catalogues as to which few dozen DNe are actually Z Cam type systems, our primary goal is to accumulate enough data to construct detailed light curves, covering the entire range of variability, to determine unequivocally the 30 Z CamPaign subjects' membership in the UGZ class of DNe. We discuss the organization, science goals, and some early results of the Z CamPaign in detail.

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Blobrana


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Posts: 131433
Date:
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Z Campaign

Name

RA

Dec

Con

Type

Period

Range

RX And

01 04 35.50

+41 17 58.0

And

UGZ

(14)

10.3 - 14 V

TZ Per

02 13 50.90

+58 22 53.0

Per

UGZ

(17)

12 - 15.6 V

Z Cam

08 25 13.20

+73 06 39.0

Cam

UGZ

(22)

10 - 14.5 V

AT Cnc

08 28 36.90

+25 20 03.0

Cnc

UGZ

(14)

12.3 - 14.6 p

SY Cnc

09 01 03.32

+17 53 56.0

Cnc

UGZ

--

10.6 - 14.0 p

AH Her

16 44 10.00

+25 15 02.0

Her

UGZ

(19.8)

10.9 - 14.7 p

EM Cyg

19 38 40.10

+30 30 28.0

Cyg

UGZ+E

--

11.9 - 14.4 p

KT Per

01 37 08.50

+50 57 20.0

Per

UGZ+ZZ

(26)

11.5 - 15.39 V

CN Ori

05 52 07.80

-05 25 01.0

Ori

UGZ

(15.85)

11 - 16.2 V

FY Vul

19 41 40.00

+21 45 59.0

Vul

UGZ

--

13.4 - 15.33 B

UZ Ser

18 11 24.90

-14 55 34.0

Ser

UGZ

(26.4)

12.0 - 16.7 p

AB Dra

19 49 06.40

+77 44 23.0

Dra

UGZ

(13.4)

11 - 15.3 V

IW And

01 01 08.90

+43 23 26.0

And

UGZ

--

14.2 - 17.4 p

TW Tri

01 36 37.00

+32 00 40.0

Tri

UGZ

(28)

13.3 - 17.0 p

PY Per

02 50 00.10

+37 39 23.0

Per

UGZ

--

13.8 - 16.5 p

BI Ori

05 23 51.80

+01 00 30.0

Ori

UGZ

(20.5)

13.2 - 16.7 p

V0344 Ori

06 15 19.00

+15 31 00.0

Ori

UGZ:

--

14.2 - 17.5: p

WZ CMa

07 18 49.20

-27 07 43.0

CMa

UGZ:

(27.1)

14.5 - <16.0 p

SV CMi

07 31 08.40

+05 58 49.0

CMi

UGZ

(16:)

13.0 - 16.3 p

BX Pup

07 54 15.60

-24 19 36.0

Pup

UGZ

(18)

13.76 - 16 V

V0391 Lyr

18 21 12.00

+38 47 44.0

Lyr

UGZ

(100:)

14.0 - 17.0 p

HS 1857+7127

18 57 20.40

+71 31 19.2

Dra

UGZ+E

--

13.9 - 17.2

V0868 Cyg

19 29 04.40

+28 54 26.0

Cyg

UGZ

(20.38)

14.3 - <17.8 p

V1363 Cyg

20 06 11.60

+33 42 38.0

Cyg

UGZ

--

13.0 - <17.6 p

VW Vul

20 57 45.10

+25 30 26.0

Vul

UGZ

(30)

13.1 - 16.27 B

HX Peg

23 40 23.70

+12 37 42.0

Peg

UGZ

--

12.9 - 16.62 V

V0513 Cas

00 18 14.90

+66 18 14.0

Cas

UGZ:

--

15.5 - <17.2 p

V1505 Cyg

19 29 49.00

+28 32 54.0

Cyg

UGZ

--

15.2 - <17.5 p

V1404 Cyg

21 57 16.40

+52 12 00.0

Cyg

UGZ

(19.15)

15.7 - <17.7 p

MN Lac

22 23 04.60

+52 40 58.0

Lac

UGZ

--

15.1 - <18.0 p




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