Investigations of the Periodic Variables in the Catalina and Linear Databases

Gigoyan, K. S.; Kostandyan, G. R.; Gigoyan, K. K.; Sarkissian, Alain; Meftah, Mustapha; Russeil, D.; Zamkotsian, Frédéric; Rahmatullaeva, F. D.; Paronyan, G. M.

doi:10.1007/s10511-021-09664-5

Cited by 2 publications

(3 citation statements)

References 25 publications

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“…Our study illustrated the possibilities to investigate samples of red giants using the data bases from large surveys and the Gaia-2MASS diagram. Analogue studies have been carried out on spectroscopically confirmed faint M and C stars noted as periodic variables at high Galactic latitudes in the Catalina (Drake et al 2014, 2017) and LINEAR (Palaversa et al 2013) catalogues (Gigoyan et al 2021). A dominant fraction of those M- and C-giants belongs to the Halo and to arms of the Sagittarius dwarf galaxy.…”

Section: Discussionmentioning

confidence: 99%

New results for FBS late-type stars using Gaia EDR3 data

Gigoyan

Lebzelter

Kostandyan

et al. 2021

Publ. Astron. Soc. Aust.

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We study in this paper bright late-type giants found in the First Byurakan Survey (FBS) data base. Phase dependent light-curves from large sky area variability data bases such as Catalina Sky Survey (CSS) and All-Sky Automated Survey for Supernovae (ASAS-SN), and the early installment of the third Gaia data release (Gaia EDR3) photometric and astrometric data have been used to characterize our sample of 1 100 M-type giants and 130 C-type stars found at high latitudes. Gaia radial velocities (RV) are available for 134 and luminosities for 158 stars out of 1 100. We show the behaviour of our sample stars in a Gaia color–absolute magnitude diagram (CaMD), the Gaia-2MASS-diagram from Lebzelter et al. with some alternative versions. In this way we explore the potential of these diagrams and their combination for the analysis and interpretation of datasets of LPVs. We show the possibility to classify stars into M- and C-types and to identify the mass of the bulk of the sample stars.

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Section: Discussionmentioning

confidence: 99%

New results for FBS late-type stars using Gaia EDR3 data

Gigoyan

Lebzelter

Kostandyan

et al. 2021

Publ. Astron. Soc. Aust.

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“…Spectral classes and physical parameters are presented for optically faint periodic variables taken from the CSDR1 (Drake et al, 2014) and LINEAR (Palaversa et al, 2013) data sets. A catalogue containing multi-parameter data on 1184 periodic variables from modern astronomical low and moderate-resolution, spectroscopic and photometric database was generated (Gigoyan et al, 2021, SIMBAD CDS VizieR Catalogue J/other/Ap/64.27). The periods are in range 10 ≤ P ≤ 1504 days and Catalina magnitudes are in range 11.5 ≤ V ≤ 20.0 mag.…”

Section: The Catalina Sky Survey Datamentioning

confidence: 99%

“…These objects are presented as periodic variables in Catalina Surveys Data Release -1 (CSDR1, Drake et al, 2014) database. These three periodic variables (out of 1184) presented by Gigoyan et al (2021) were associated in the SIMBAD database with the YSO (e.g., Gutermuth et al, 2009, Hernández et al, 2007.…”

Section: Introductionmentioning

confidence: 99%

Gaia EDR3 Data For Three Young Stellar Objects

Gigoyan

Azatyan²,

Gigoyan³

2022

ComBAO

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We present Gaia Early Data Release 3 (Gaia EDR3) high accurate astrometric and photometric data and also Catalina Sky Survey (CSS ) phase-dependent light curves for three Young Stellar Objects (YSO). They are LRL 245, 2MASS J04300424+3533238, and CVSO 592. These tree YSOs are presented as periodic variables in the Catalina Surveys Data Release-1 (CSDR1) data base. CSS phase-dependent curve of LRL 245 shows periodicity with period P=234.66 days and amplitude ∆m≈4.0 mag. For this object high-resolution spectra in H-band (from 1.51 to 1.69 µm) was obtained by the APOGEE instrument. LAMOST telescope moderate-resolution CCD spectra is available for object 2MASS J04300424+3522238 only. The spectra shows clear features of M dwarfs.

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Investigations of the Periodic Variables in the Catalina and Linear Databases

Cited by 2 publications

References 25 publications

New results for FBS late-type stars using Gaia EDR3 data

New results for FBS late-type stars using Gaia EDR3 data

Gaia EDR3 Data For Three Young Stellar Objects

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