scholarly journals Identification of a Nebulous Blue Object Near MAFFEI:1

1980 ◽  
Vol 92 ◽  
pp. 725 ◽  
Author(s):  
R. J. Buta ◽  
M. L. McCall ◽  
A. K. Uomoto
Keyword(s):  
Blue Object

scholarly journals Observations of three pre-cataclysmic variables from the Edinburgh-Cape blue object survey

2009 ◽  
Vol 504 (2) ◽  
pp. 491-499 ◽  
Author(s):  
C. Tappert ◽  
B. T. Gänsicke ◽  
M. Zorotovic ◽  
I. Toledo ◽  
J. Southworth ◽  
...  
Keyword(s):  
Cataclysmic Variables ◽  
Blue Object

scholarly journals Techniques and Results of Observations of Rapid and Ultrarapid Variable Stars

1971 ◽  
Vol 15 ◽  
pp. 144-159 ◽  
Author(s):  
Brian Warner
Keyword(s):  
Time Scales ◽  
Time Scale ◽  
Variable Stars ◽  
Observational Evidence ◽  
Short Time Scale ◽  
Dwarf Novae ◽  
Stellar Objects ◽  
Blue Object ◽  
Flare Stars ◽  
Short Time

The inception of the present era of interest in rapidly varying stars may be identified with M. F. WALKER’s discovery in 1954 (WALKER 1954) of changes in the brightness of the blue object MacRae+43° 1 (now known as MVLyr), on a time scale of a few minutes. Outside of flare stars, few other stellar objects were suspected to vary on such a short time scale. GREENSTEIN’s (1954) spectra showed that MV Lyr resembles an old nova, which stimulated WALKER to look for light fluctuations in old, recurrent, and dwarf novae and related stars. His observational evidence that all members of these classes show variations of various amplitudes and time scales is summarized in the IAU Colloquium on non-stable stars (WALKER 1957). Most spectacular of his discoveries was the existence of 71 sec periodic variations in the light from the remnant of Nova Herculis 1934 (DQ Her) (WALKER 1956).

scholarly journals The Edinburgh–Cape Blue Object Survey – III. Zone 2; galactic latitudes −30° > b > −40°

2013 ◽  
Vol 431 (1) ◽  
pp. 240-251 ◽  
Author(s):  
D. O’Donoghue ◽  
D. Kilkenny ◽  
C. Koen ◽  
N. Hambly ◽  
H. MacGillivray ◽  
...  
Keyword(s):  
Blue Object

scholarly journals Cataclysmic variables in the Edinburgh-Cape Blue Object Survey

2001 ◽  
Vol 325 (1) ◽  
pp. 89-110 ◽  
Author(s):  
A. Chen ◽  
D. O'Donoghue ◽  
R. S. Stobie ◽  
D. Kilkenny ◽  
B. Warner
Keyword(s):  
Cataclysmic Variables ◽  
Blue Object

scholarly journals The Edinburgh-Cape Blue Object Survey -- II. Zone 1 -- the North Galactic Cap

1997 ◽  
Vol 287 (4) ◽  
pp. 867-893 ◽  
Author(s):  
D. Kilkenny ◽  
D. O'Donoghue ◽  
C. Koen ◽  
R. S. Stobie ◽  
A. Chen
Keyword(s):  
The North ◽  
Blue Object ◽  
North Galactic

scholarly journals PG1159-035: A New, Hot, Non-DA Pulsating Degenerate

1979 ◽  
Vol 53 ◽  
pp. 377-381 ◽  
Author(s):  
J. T. McGraw ◽  
S. G. Starrfield ◽  
J. Liebert ◽  
R. Green
Keyword(s):  
Mass Transfer ◽  
Accretion Disk ◽  
High Speed ◽  
Period Range ◽  
High Speed Photometry ◽  
Blue Object ◽  
Orbital Modulation ◽  
Absorption Features ◽  
Narrow Emission

PG1159-035 was originally detected as a 14.5 mag. blue object in a survey for QSO candidates (Green 1977), An SIT spectrogram obtained at the Hale 5m telescope at 6Å resolution showed this star to have a very blue continuum with absorption features near λ4686 and λ4650 which were tentatively attributed to Hell and the CIII/CIV complex, respectively. Possible narrow emission components to these lines appear in Figure 1 which shows confirming spectra obtained with the IIDS (at 2.5Å resolution) on the Kitt Peak 2.1m telescope. The blue continuum and possible presence of Hell in emission suggested that this star was perhaps similar to the helium mass-transfer binary AM CVn (HZ 29). For this reason, we put PG1159-035 on our program of high-speed photometry, expecting the star to show “flickering” associated with mass transfer into an accretion disk and possible orbital modulation or eclipses in the period range 10-20 minutes—photometric characteristics similar to those observed in AM CVn.

scholarly journals A SUBTLE INFRARED EXCESS ASSOCIATED WITH A YOUNG WHITE DWARF IN THE EDINBURGH-CAPE BLUE OBJECT SURVEY

2016 ◽  
Vol 831 (1) ◽  
pp. 31 ◽  
Author(s):  
E. Dennihy ◽  
John H. Debes ◽  
B. H. Dunlap ◽  
P. Dufour ◽  
Johanna K. Teske ◽  
...  
Keyword(s):  
White Dwarf ◽  
Infrared Excess ◽  
Blue Object

Spectrum of the blue object near the irregular galaxy NGC 520

Astrophysics ◽  
1975 ◽  
Vol 10 (2) ◽  
pp. 179-180
Author(s):  
C. H. Arp ◽  
W. L. W. Sargent ◽  
�. E. Khachkiyan ◽  
N. K. Andreasyan
Keyword(s):  
Irregular Galaxy ◽  
Blue Object

scholarly journals The Edinburgh-Cape Blue Object Survey – V. The end: Partial Zones 4–6; Galactic latitudes −50° > b > −90°

2016 ◽  
Vol 459 (4) ◽  
pp. 4343-4352 ◽  
Author(s):  
D. Kilkenny ◽  
H. L. Worters ◽  
D. O'Donoghue ◽  
C. Koen ◽  
T. Koen ◽  
...  
Keyword(s):  
Blue Object

Preliminary Results from the Edinburgh-Cape Bright QSO Survey (ECBQS)

1993 ◽  
Vol 10 (3) ◽  
pp. 265-267 ◽  
Author(s):  
A. Savage ◽  
R.D. Cannon ◽  
R.S. Stobie ◽  
D. Kilkenny ◽  
D. O'Donoghue ◽  
...  
Keyword(s):  
Schmidt Telescope ◽  
Stellar Objects ◽  
Preliminary Results ◽  
The North ◽  
Blue Object ◽  
Measuring Machine

AbstractThe Edinburgh-Cape Bright QSO Survey is a very small sub-set of the Edinburgh Cape Blue Object Survey, which is a major survey to discover blue stellar objects brighter than B~18 in the southern sky. It will cover an area of sky of 10,000 square degrees with |b|>30 and dec <0. The blue stellar objects are selected by automatic techniques from U and B pairs of UK Schmidt Telescope plates scanned with the COSMOS measuring machine. Follow-up photometry and spectroscopy is being obtained with the SAAO telescopes to classify the types of objects brighter than B=16.5, with some of the more stubborn objects being subjected to AAO service spectroscopy. Some preliminary results for the 6% QSO minority are presented in this paper and comparison is made with the Palomar-Green QSO Survey in the north, which we find to be at least a factor of two incomplete.

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