A Census of Symbiotic Stars in the 2MASS,
                    <i>WISE</i>
                    , and
                    <i>Gaia</i>
                    Surveys

Akras, S.; Guzmán-Ramírez, L.; Leal-Ferreira, M. L.; Ramos-Larios, G.

doi:10.3847/1538-4365/aaf88c

Cited by 84 publications

(101 citation statements)

References 172 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, Akras et al () published the census of SySts in the 2MASS , WISE , and Gaia Surveys. They presented the list of known and candidate SySts with temperatures and infrared (IR) types of these objects that were obtained by modeling of their IR spectra.…”

Section: New Online Database Of Symbiotic Variablesmentioning

confidence: 99%

“…Akras et al () discussed the relationship between the presence of Raman‐scattered O vi lines in the optical spectra of ≈55% of SySts and their X‐ray type. They listed 46 SySts detected in X‐rays and found that only α and β types exhibit these particular emission lines in their spectra.…”

Section: X‐ray Emission Of Symbiotic Variable Starsmentioning

confidence: 99%

“…We reviewed the database of Swift /XRT observations for objects that have not been discussed in the papers of Luna et al () and Nuñez et al (, ) and for which no information on X‐ray emission have been listed in Akras et al ().…”

Section: X‐ray Emission Of Symbiotic Variable Starsmentioning

confidence: 99%

See 2 more Smart Citations

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

2019

View full text Add to dashboard Cite

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.

show abstract

Section: New Online Database Of Symbiotic Variablesmentioning

confidence: 99%

Section: X‐ray Emission Of Symbiotic Variable Starsmentioning

confidence: 99%

See 1 more Smart Citation

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

2019

View full text Add to dashboard Cite

show abstract

“…In order to monitor the filter performance under possible cases of false positives, we also included two well-characterized SySts known not to show Raman emission (i.e., CM Aql and LMC 1). A very helpful visual guide was offered by the MZ02 spectrophotometric atlas, complemented with the Belczyński et al (2000) and Akras et al (2019a) catalogs. It is worth noting that the MZ02 atlas, which also guided the conceptual design of RAMSES II in the early stages of the project (Sect.…”

Section: Target Selectionmentioning

confidence: 99%

“…Luna et al 2013), and for them the WD temperature is a function of its mass. It is therefore understandable that 100% of the hottest shell burning SySts, detected as super-soft X-ray sources (α-types), display Raman-scattered OVI bands in their optical spectra, while all the unambiguously non-burning sources (δ-types) do not (Luna et al 2013;Akras et al 2019a). Interestingly, the presence of such a hot and luminous WD implies a tight relation between the HeII 4686 line and the Raman OVI 6830 band.…”

Section: Introductionmentioning

confidence: 99%

RAMSES II: RAMan Search for Extragalactic Symbiotic Stars Project Concept, Commissioning, and Early Results from the Science Verification Phase

Angeloni

Gonçalves

Akras

et al. 2019

Self Cite

View full text Add to dashboard Cite

Symbiotic stars (SySts) are long-period interacting binaries composed of a hot compact star, an evolved giant star, and a tangled network of gas and dust nebulae. They represent unique laboratories for studying a variety of important astrophysical problems, and have also been proposed as possible progenitors of SNIa. Presently, we know 257 SySts in the Milky Way and 69 in external galaxies. However, these numbers are still in striking contrast with the predicted population of SySts in our Galaxy. Because of other astrophysical sources that mimic SySt colors, no photometric diagnostic tool has so far demonstrated the power to unambiguously identify a SySt, thus making the recourse to costly spectroscopic follow-up still inescapable. In this paper we present the concept, commissioning, and science verification phases, as well as the first scientific results, of RAMSES II -a Gemini Observatory Instrument Upgrade Project that has provided each GMOS instrument at both Gemini telescopes with a set of narrow-band filters centered on the Raman OVI 6830Å band. Continuum-subtracted images using these new filters clearly revealed known SySts with a range of Raman OVI line strengths, even in crowded fields. RAMSES II observations also produced the first detection of Raman OVI emission from the SySt LMC 1 and confirmed Hen 3-1768 as a new SySt -the first photometric confirmation of a SySt. Via Raman OVI narrow-band imaging, RAMSES II provides the astronomical community with the first purely photometric tool for hunting SySts in the local Universe.

show abstract

The symbiotic binary ZZ CMi: Intranight variability and suggested outbursting nature

et al. 2021

View full text Add to dashboard Cite

We present photometric and spectral observations of the symbiotic star ZZ CMi.We detect intranight variability-flickering and smooth variations in U band.The amplitude of the flickering is about 0.10 − 0.20 mag in U band. In the B band, the variability is lower, with amplitude ≤ 0.03 mag. We also detect variability in the H𝛼 and H𝛽 emission lines, and find an indication for outflow with velocity of about 120-150 km/s. The results indicate that ZZ CMi is an accretion-powered symbiotic containing an M4-M6 III cool component with a white dwarf resembling recurrent novae and jet-ejecting symbiotic stars.

show abstract

A Census of Symbiotic Stars in the 2MASS, WISE , and Gaia Surveys

Cited by 84 publications

References 172 publications

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

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

RAMSES II: RAMan Search for Extragalactic Symbiotic Stars Project Concept, Commissioning, and Early Results from the Science Verification Phase

The symbiotic binary ZZ CMi: Intranight variability and suggested outbursting nature

Contact Info

Product

Resources

About