- ID:
- ivo://CDS.VizieR/J/other/IBVS/5731
- Title:
- Minima and maxima of 816 variables
- Short Name:
- J/other/IBVS/573
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this 55th compilation of BAV results, photoelectric observations obtained in the years 2005 till 2006 are presented on 816 variable stars giving 1722 minima and maxima. All moments of minima and maxima are heliocentric. The values in column 'O-C' are determined without incorporation of nonlinear terms. The references are given in the section 'Remarks'. All information about photometers and filters are specified in the column 'Rem'. The observations were made at private observatories. The photoelectric measurements and all the lightcurves with evaluations can be obtained from the office of the BAV for inspection.
Number of results to display per page
Search Results
- ID:
- ivo://CDS.VizieR/J/other/IBVS/5889
- Title:
- Minima and maxima of 380 variables
- Short Name:
- J/other/IBVS/588
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this 63rd compilation of BAV results, photoelectric observations obtained in the year 2008 are presented on 380 variable stars giving 591 minima on eclipsing binaries and maxima on pulsating stars. All moments of minima and maxima are heliocentric. The errors are tabulated in column '+/-'. The values in column 'O-C' are determined without incorporation of nonlinear terms. The references are given in the section 'Remarks'. All information about photometers and filters are specified in the column 'Rem'. The observations were made at private observatories. The photoelectric measurements and all the light curves with evaluations can be obtained from the office of the BAV for inspection.
- ID:
- ivo://CDS.VizieR/J/other/IBVS/5830
- Title:
- Minima and maxima of 292 variables
- Short Name:
- J/other/IBVS/583
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this 60th compilation of BAV results, photoelectric observations obtained in the years 2007 are presented on 292 variable stars giving 399 minima on eclipsing binaries and maxima on pulsating stars. All moments of minima and maxima are heliocentric. The errors are tabulated in column '+/-'. The values in column 'O-C' are determined without incorporation of nonlinear terms. The references are given in the section 'Remarks'. All information about photometers and filters are specified in the column 'Rem'. The observations were made at private observatories. The photoelectric measurements and all the lightcurves with evaluations can be obtained from the office of the BAV for inspection.
- ID:
- ivo://CDS.VizieR/J/other/IBVS/5941
- Title:
- Minima and maxima of 292 variables
- Short Name:
- J/other/IBVS/594
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this 66th compilation of BAV results, photoelectric observations obtained in the years 2009 and 2010 are presented on 452 variable stars giving 838 minima on eclipsing binaries and maxima on pulsating stars. All moments of minima and maxima are heliocentric. The errors are tabulated in column '+/-'. The values in column 'O-C' are determined without incorporation of nonlinear terms.The references are given in the section 'Remarks'. All information about photometers and filters are specified in the column `Rem'. The observations were made at private observatories. The photoelectric measurements and all the light curves with evaluations can be obtained from the office of the BAV for inspection.
- ID:
- ivo://CDS.VizieR/J/other/IBVS/5802
- Title:
- Minima and maxima of 735 variables
- Short Name:
- J/other/IBVS/580
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this 58th compilation of BAV results, photoelectric observations obtained in the years 2006 and 2007 are presented on 473 variable stars giving 735 minima and maxima on eclipsing binaries and pulsating stars. All moments of minima and maxima are heliocentric. The errors are tabulated in column '+/-'. The values in column 'O-C' are determined without incorporation of nonlinear terms. The references are given in the section 'Remarks'. All information about photometers and filters are specified in the column 'Rem'. The observations were made at private observatories. The photoelectric measurements and all the light curves with evaluations can be obtained from the office of the BAV for inspection.
- ID:
- ivo://CDS.VizieR/J/other/IBVS/5918
- Title:
- Minima and maxima of 452 variables
- Short Name:
- J/other/IBVS/591
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this 65th compilation of BAV results, photoelectric observations obtained in the year 2009 are presented on 521 variable stars giving 871 minima on eclipsing binaries and maxima on pulsating stars. All moments of minima and maxima are heliocentric. The errors are tabulated in column '+/-'. The values in column 'O-C' are determined without incorporation of nonlinear terms. The references are given in the section 'Remarks'. All information about photometers and filters are specified in the column 'Rem'. The observations were made at private observatories. The photoelectric measurements and all the light curves with evaluations can be obtained from the office of the BAV for inspection.
- ID:
- ivo://CDS.VizieR/J/other/IBVS/5874
- Title:
- Minima and maxima of 299 variables
- Short Name:
- J/other/IBVS/587
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this 61th compilation of BAV results, photoelectric observations obtained in the year 2008 are presented on 299 variable stars giving 655 minima on eclipsing binaries and maxima on pulsating stars. All moments of minima and maxima are heliocentric.
- ID:
- ivo://CDS.VizieR/J/AJ/150/178
- Title:
- Minima of 41 binaries from entire Kepler mission
- Short Name:
- J/AJ/150/178
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Many short-period binary stars have distant orbiting companions that have played a role in driving the binary components into close separation. Indirect detection of a tertiary star is possible by measuring apparent changes in eclipse times of eclipsing binaries as the binary orbits the common center of mass. Here we present an analysis of the eclipse timings of 41 eclipsing binaries observed throughout the NASA Kepler mission of long duration and precise photometry. This subset of binaries is characterized by relatively deep and frequent eclipses of both stellar components. We present preliminary orbital elements for seven probable triple stars among this sample, and we discuss apparent period changes in seven additional eclipsing binaries that may be related to motion about a tertiary in a long period orbit. The results will be used in ongoing investigations of the spectra and light curves of these binaries for further evidence of the presence of third stars. Fundamental Parameters}
- ID:
- ivo://CDS.VizieR/J/AJ/143/137
- Title:
- Minima of 41 eclipsing binaries from a Kepler survey
- Short Name:
- J/AJ/143/137
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the first results of a Kepler survey of 41 eclipsing binaries that we undertook to search for third star companions. Such tertiaries will periodically alter the eclipse timings through light travel time and dynamical effects. We discuss the prevalence of starspots and pulsation among these binaries and how these phenomena influence the eclipse times. There is no evidence of short-period companions (P<700days) among this sample, but we do find evidence for long-term timing variations in 14 targets (34%). We argue that this finding is consistent with the presence of tertiary companions among a significant fraction of the targets, especially if many have orbits measured in decades. This result supports the idea that the formation of close binaries involves the deposition of angular momentum into the orbital motion of a third star.
- ID:
- ivo://CDS.VizieR/J/ApJS/247/44
- Title:
- Mira-like variables from the KELT survey
- Short Name:
- J/ApJS/247/44
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a sample of 4132 Mira-like variables (red variables with long periods and high amplitudes) in the Kilodegree Extremely Little Telescope (KELT) survey. Of these, 376 are new Mira-like detections. We used Two Micron All Sky Survey (2MASS) colors to identify candidate asymptotic giant branch stars. We searched for photometric variability among the candidate asymptotic giant branch stars and identified stars that show periodic variability. We selected variables with high amplitudes and strong periodic behavior using a Random Forest classifier. Of the sample of 4132 Mira-like variables, we estimate that 70% are Miras and 30% are semiregular (SR) variables. We also adopt the method of using (W_RP_-W_Ks_) versus (J-Ks) colors in distinguishing between O-rich and C-rich Miras and find it to be an improvement over 2MASS colors.
