First Release of the New Online Database of Symbiotic Variables

Merc, Jaroslav; Gális, R.; Wolf, M.

doi:10.3847/2515-5172/ab0429

Cited by 37 publications

(32 citation statements)

References 11 publications

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“…SySt were also hunted toward the bulge by Miszalski, Mikołajewska & Udalski (2013) and Miszalski & Mikołajewska (2014). The current total of confirmed Galactic SySt is about 250 (Akras et al 2019;Merc et al 2019b).…”

Section: The New Syst Probed By Galahmentioning

confidence: 92%

“…The same objective-prism technique was applied also to the Magellanic Clouds and several SySt were discovered there too (Walker 1983;Morgan 1992). Searches for SySt in external galaxies have steadily progressed over the years (Gonc ¸alves et al 2008(Gonc ¸alves et al , 2012(Gonc ¸alves et al , 2015Kniazev et al 2009;Angeloni et al 2014;Mikołajewska, Caldwell & Shara 2014;Mikołajewska et al 2017;Roth et al 2018;Drozd et al 2019), and the current total of known extragalactic SySt amounts to ∼70 systems (Akras et al 2019;Chen, Liu & Shan 2019;Merc, Gális & Wolf 2019b). New surveys aiming to SySt within the Local Group (Angeloni et al 2019) promise to increase such numbers, especially for the burn-SySt type.…”

Section: The New Syst Probed By Galahmentioning

confidence: 99%

“…Our search for acc-SySt among GALAH targets started with isolating the cool giants from the rest. In this paper, we focus on giants of the M spectral types, those most abundant (∼70 per cent) among the known SySt (see the catalogues by Allen 1984;Belczyński et al 2000;Akras et al 2019;Merc et al 2019b). SySt containing other types of cool giants will be explored in follow-up papers.…”

Section: S E L E C T I O N S T E P Smentioning

confidence: 99%

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The GALAH survey and symbiotic stars – I. Discovery and follow-up of 33 candidate accreting-only systems

Munari

Traven

Masetti

et al. 2021

Monthly Notices of the Royal Astronomical Society

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We have identified a first group of 33 new candidates for symbiotic stars (SySt) of the accreting-only variety among the 600 255 stars so far observed by the GALAH high-resolution spectroscopic survey of the Southern Hemisphere, more than doubling the number of those previously known. GALAH aims to high latitudes and this offers the possibility to sound the Galaxy for new SySt away from the usual Plane and Bulge hunting regions. In this paper we focus on SySt of the M spectral type, showing an Hα emission with a peak in excess of 0.5 above the adjacent continuum level, and not affected by coherent radial pulsations. These constraints will be relaxed in future studies. The 33 new candidate SySt were subjected to an array of follow-up confirmatory observations (X–ray/UV observations with the Swift satellite, search for optical flickering, presence of a near-UV upturn in ground-based photometric and spectroscopic data, radial velocity changes suggestive of orbital motion, variability of the emission line profiles). According to Gaia eDR3 parallaxes, the candidate new SySt are located at the tip of the Giant Branch, sharing the same distribution in M(KS) of the well established SySt. The accretion luminosities of the candidate new StSt are in the range 1−10 L⊙, corresponding to mass-accretion rates of 0.1-1 10−9 M⊙ yr−1 for WDs of 1 M⊙. The M giant of one of them presents a large Lithium over-abundance.

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Section: The New Syst Probed By Galahmentioning

confidence: 92%

Section: The New Syst Probed By Galahmentioning

confidence: 99%

Section: S E L E C T I O N S T E P Smentioning

confidence: 99%

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The GALAH survey and symbiotic stars – I. Discovery and follow-up of 33 candidate accreting-only systems

Munari

Traven

Masetti

et al. 2021

Monthly Notices of the Royal Astronomical Society

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“…The extra-galactic part of the database was presented by (Merc et al, 2019). We are continuing to prepare the Galactic part of the database.…”

Section: New Online Database Of Symbiotic Variablesmentioning

confidence: 99%

Galactic members in the New Online Database of Symbiotic Variables.

Merc¹,

Gális²,

Wolf³

2020

caosp

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Symbiotic variables belong to an interesting class of interacting binary stars. At the beginning of this century, a systematic search for these objects was begun and such surveys in the Milky Way and the Local Group have resulted in discoveries of many new symbiotics and dozens of candidates. Because the latest catalogue of symbiotic binaries has been outdated for almost two decades, we decided to prepare a new database of the Galactic and extra-Galactic symbiotic systems. We present it in this work. Our database is available online, allowing it to be up-to-date and available to the astronomical community at any time. The database also includes a web portal that allows easy data access without the necessity for any additional software or formatting of the data.

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“…In the same time, we prepared the New Online Database of Symbiotic Variables, which contains not only infrared data but also observational (e.g., position, brightness in different spectral bands and regions) and physical (e.g., orbital elements and parameters of binary components) parameters with consistent references for all known SySts. The part of the database consisting of the extragalactic SySts has already been released (Merc et al ); the galactic part will be published later this year.…”

Section: New Online Database Of Symbiotic Variablesmentioning

confidence: 99%

New online database of symbiotic variables: Symbiotics in X‐rays

2019

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Symbiotic variable stars belong to an interesting class of interacting binary systems.Since the beginning of this century, the systematic search for these objects has begun, and such surveys have led to discoveries of many new objects and dozens of candidates in the Milky Way and the Local Group. As the latest catalogue of symbiotic binaries is almost two decades old, we decided to prepare a new, online database of the galactic and extragalactic symbiotic systems. These objects are also known for their X-ray emission. For the purpose of this work, we have prepared a census of symbiotic binaries and their properties based on observations obtained by X-ray satellites in the previous decades. As our review has shown, the X-ray emission seems to be a common feature of symbiotic systems, preferentially detected from nearby sources.

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First Release of the New Online Database of Symbiotic Variables

Cited by 37 publications

References 11 publications

The GALAH survey and symbiotic stars – I. Discovery and follow-up of 33 candidate accreting-only systems

The GALAH survey and symbiotic stars – I. Discovery and follow-up of 33 candidate accreting-only systems

Galactic members in the New Online Database of Symbiotic Variables.

New online database of symbiotic variables: Symbiotics in X‐rays

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