Multivariable Problems

Hammersley, J. M.; Handscomb, D. C.

doi:10.1007/978-94-009-5819-7_12

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Most VUDS observations were obtained after the CCD detectors were upgraded in summer 2010. At that time, the original blue-sensitive thinned E2V CCDs were changed to redoptimized thick E2V CCDs in 2010 (Hammersley et al 2010). The global VIMOS sensitivity at 9000Å increased by ∼ ×2, making it comparable to the FORS2 sensitivity in the red with a field of view 4.8× larger, and significantly reducing the fringing above 8000Åthanks to the thicker substrate.…”

Section: Vimos Observationsmentioning

confidence: 99%

The VIMOS Ultra-Deep Survey: ~10 000 galaxies with spectroscopic redshifts to study galaxy assembly at early epochs 2 <z≃ 6

Fèvre

Tasca

Cassata

et al. 2015

A&A

312

230

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We present the VIMOS Ultra Deep Survey (VUDS), a spectroscopic redshift survey of ∼10 000 very faint galaxies to study the main phase of galaxy assembly in 2 < z 6. The survey covers 1 deg 2 in three separate fields: COSMOS, ECDFS, and VVDS-02h, with the selection of targets based on an inclusive combination of photometric redshifts and colour properties. Spectra covering 3650 < λ < 9350 Å are obtained with VIMOS on the ESO-VLT with integration times of 14h. Here we present the survey strategy, target selection, data processing, and the redshift measurement process with an emphasis on the specific methods used to adapt to this high-redshift range. We discuss the spectra quality and redshift reliability and derive a success rate in redshift measurement of 91%, or 74% by limiting the dataset to the most reliable measurements, down to a limiting magnitude i AB = 25. Measurements are performed all the way down to i AB = 27. The mean redshift of the main sample is z ∼ 3 and extends over a broad redshift range mainly in 2 < z < 6. At 3 < z < 5, the galaxies cover a wide range of luminosities −23 < M NUV < −20.5, stellar mass 10 9 M < M * < 10 11 M , and star formation rates 1 M /yr < SFR < 10 3 M /yr. We discuss the spectral properties of galaxies using individual as well as stacked spectra. The comparison between spectroscopic and photometric redshifts as well as colour selection demonstrate the effectiveness of our selection scheme. From about ∼90% of the data analysed so far, we expect to assemble >6000 galaxies with reliable spectroscopic redshifts in 2 < z < 6 when complete. This makes the VUDS the largest survey at these redshifts and offers the opportunity for unprecedented studies of the star-forming galaxy population and its distribution in large-scale structures during the main phase of galaxy assembly.

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Section: Vimos Observationsmentioning

confidence: 99%

The VIMOS Ultra-Deep Survey: ~10 000 galaxies with spectroscopic redshifts to study galaxy assembly at early epochs 2 <z≃ 6

Fèvre

Tasca

Cassata

et al. 2015

A&A

312

230

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“…Because there is significant overlap between the three pointings, the total effective covered area is ∼ 450 arcmin 2 . For further details on this instrument, we refer the reader to Le Fèvre et al (2003) and Hammersley et al (2010). The VIMOS observations were obtained in 2013 and 2014, from early April to early October, at a cadence of approximately one epoch every 4 days, which satisfied the program's primary science goal of monitoring microlensing events with coverage sufficient to detect the effect of the Earth's orbit on microlensing light curves.…”

Section: Observationsmentioning

confidence: 99%

New variable stars towards the Galactic Bulge. I. The bright regime★†

Kains

Calamida

Rejkuba

et al. 2018

Monthly Notices of the Royal Astronomical Society

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We report the detection of 1143 variable stars towards the Galactic bulge, including 320 previously uncatalogued variables, using time-series photometry extracted from data obtained with the VIMOS imager at the Very Large Telescope. Observations of the Sagittarius Window Eclipsing Extrasolar Planet Search (SWEEPS) field in the Galactic Bulge were taken over 2 years between March and October at a cadence of ∼ 4 days, enabling the detection of variables with periods up to ∼100 days. Many of these were already known, but we detected a significant number of new variables, including 26 Cepheids, a further 18 Cepheid candidates, and many contact binaries. Here we publish the catalog of the new variables, containing coordinates, mean magnitudes as well as periods and classification; full light curves for these variables are also made available electronically.

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Multivariable Problems

Cited by 2 publications

References 4 publications

The VIMOS Ultra-Deep Survey: ~10 000 galaxies with spectroscopic redshifts to study galaxy assembly at early epochs 2 <z≃ 6

The VIMOS Ultra-Deep Survey: ~10 000 galaxies with spectroscopic redshifts to study galaxy assembly at early epochs 2 <z≃ 6

New variable stars towards the Galactic Bulge. I. The bright regime★†

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