The ALADIN interactive sky atlas

Bonnarel, F.; Fernique, P.; Bienaymé, O.; Egret, D.; Genova, F.; Louys, Mireille; Ochsenbein, F.; Wenger, M.; Bartlett, J. G.

doi:10.1051/aas:2000331

Cited by 738 publications

(596 citation statements)

References 10 publications

(10 reference statements)

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“…The unidenfied ASAS source was 054200-0154.7 (V 0 = 13.167 mag, σ(V 0 ) = 0.245 mag, N obs = 49), which is actually a bright spot in NGC 2024. For the visual identification, we used the Aladin interactive sky atlas (Bonnarel et al 2000). The actual number of stars with light curves was 78, because there were 21 variable star candidates with two corresponding light curves.…”

Section: Discussionmentioning

confidence: 99%

Finding the most variable stars in the Orion Belt with the All Sky Automated Survey

2010

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We look for high-amplitude variable young stars in the open clusters and associations of the Orion Belt. We use public data from the ASAS-3 Photometric V -band Catalogue of the All Sky Automated Survey, infrared photometry from the 2MASS and IRAS catalogues, proper motions, and the Aladin sky atlas to obtain a list of the most variable stars in a survey area of side 5 deg centred on the bright star Alnilam (ǫ Ori) in the centre of the Orion Belt. We identify 32 highly-variable stars, of which 16 had not been reported to vary before. They are mostly variable young stars and candidates (16) and background giants (8), but there are also field cataclysmic variables, contact binaries, and eclipsing binary candidates. Of the young stars, which typically are active Herbig Ae/Be and T Tauri stars with Hα emission and infrared flux excess, we discover four new variables and confirm the variability status of another two. Some of them belong to the well known σ Orionis cluster. Besides, six of the eight giants are new variables, and three are new periodic variables.

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Section: Discussionmentioning

confidence: 99%

Finding the most variable stars in the Orion Belt with the All Sky Automated Survey

2010

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“…A finder chart of the small area centered on KIC 8462852with other tagged stars discussed in the text, rendered from the 2MASS images using the Aladin application from CDS (Bonnarel et al 2010). All sources listed in Gaia DR1 (Brown et al 2016) are marked with small red squares.…”

Section: Vimsmentioning

confidence: 99%

Photometric and Astrometric Vagaries of the Enigma Star Kic 8462852

Макаров

Goldin²

2016

ApJ

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We apply a principal component analysis (PCA)-based pre-whitening method to the entire collection of main Kepler mission long-cadence data for KIC 8462852 spanning four years. This technique removes the correlated variations of instrumental origin in both the detected light curves and astrometry, resolving intrinsic changes in flux and image position of less than 100 ppm and 1 mas, respectively. Beside the major dips in the light curve during mission quarters 8 and 16, when the flux dropped by up to 20%, we confirm multiple smaller dips across the time span of observation with amplitudes ranging from 0.1% to 7%. A variation of flux with a period of 0.88 day and a half-amplitude of approximately 90 ppm is confirmed in the PCA-cleaned data. We find that the phase of the wave is steady over a 15 month interval. We confidently detect a weak variability-induced motion (VIM) effect in the cleaned astrometric trajectories, when the moment-based centroids shift synchronously with the flux dips by up to 0.0008 pixels on the detector. The inconsistent magnitude and direction of VIM effects within the same quarter point at more than one source of photometric variability in the blended image. The 0.88 day periodicity comes from a different source, not from the target star KIC 8462852. We discuss a possible interpretation of the bizarre properties of the source as a swarm of interstellar junk (comets and planetoids) crossing the line of sight to the star and its optical companions at approximately 7 mas yr −1 .

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“…Using Aladin (Bonnarel et al 2000), we were able to retrieve the catalogs and the archival images, for visual inspection to ensure that our high PM target cross identifications were correct. We also used Topcat (Taylor 2005) to cross-match catalogs.…”

Section: Sed Fittingmentioning

confidence: 99%

Spectrophotometric characterization of high proper motion sources fromWISE

Beamín

Ivanov

Minniti

et al. 2015

Mon. Not. R. Astron. Soc.

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The census of the solar neighborhood is almost complete for stars and becoming more complete in the brown dwarf regime. Spectroscopic, photometric and kinematic characterization of nearby objects helps us to understand the local mass function, the binary fraction, and provides new targets for sensitive planet searches. We aim to derive spectral types and spectro-photometric distances of a sample of new high proper motion sources found with the WISE satellite, and obtain parallaxes for those objects that fall within the area observed by the Vista Variables in the Vía Láctea survey (VVV). We used low resolution spectroscopy and template fitting to derive spectral types, multiwavelength photometry to characterize the companion candidates and obtain photometric distances. Multi-epoch imaging from the VVV survey was used to measure the parallaxes and proper motions for three sources. We confirm a new T2 brown dwarf within ∼15 pc. We derived optical spectral types for twenty four sources, mostly M dwarfs within 50 pc. We addressed the wide binary nature of sixteen objects found by the WISE mission and previously known high proper motion sources. Six of these are probably members of wide binaries, two of those are new, and present evidence against the physical binary nature of two candidate binary stars found in the literature, and eight that we selected as possible binary systems. We discuss a likely microlensing event produced by a nearby low mass star and a galaxy, that is to occur in the following five years.

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The ALADIN interactive sky atlas

Cited by 738 publications

References 10 publications

Finding the most variable stars in the Orion Belt with the All Sky Automated Survey

Finding the most variable stars in the Orion Belt with the All Sky Automated Survey

Photometric and Astrometric Vagaries of the Enigma Star Kic 8462852

Spectrophotometric characterization of high proper motion sources fromWISE

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