Rodolfo Angeloni
RAMSES II: RAMan Search for Extragalactic Symbiotic Stars Project Concept, Commissioning, and Early Results from the Science Verification Phase
Angeloni, Rodolfo; Gonçalves, Denise R.; Akras, Stavros; Gimeno, German; Diaz, Ruben; Scharwächter, Julia; Nuñez, Natalia E.; Luna, Gerardo Juan M.; Lee, Hee-Won; Heo, Jeong-Eun; Lucy, Adrian B.; Arancibia, Marcelo Jaque; Moreno, Cristian; Chirre, Emmanuel; Goodsell, Stephen J.; King, Piera Soto; Sokoloski, Jennifer L.; Choi, Bo-Eun; Ribeiro, Mateus Dias
Authors
Denise R. Gonçalves
Stavros Akras
German Gimeno
Ruben Diaz
Julia Scharwächter
Natalia E. Nuñez
Gerardo Juan M. Luna
Hee-Won Lee
Jeong-Eun Heo
Adrian B. Lucy
Marcelo Jaque Arancibia
Cristian Moreno
Emmanuel Chirre
Dr Stephen Goodsell stephen.goodsell@durham.ac.uk
Programme Manager
Piera Soto King
Jennifer L. Sokoloski
Bo-Eun Choi
Mateus Dias Ribeiro
Abstract
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 of 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 O vi 6830 Å band. Continuum-subtracted images using these new filters clearly revealed known SySts with a range of Raman O vi line strengths, even in crowed fields. RAMSES II observations also produced the first detection of Raman O vi emission from the SySt LMC 1 and confirmed Hen 3-1768 as a new SySt—the first photometric confirmation of a SySt. Via Raman O vi narrow-band imaging, RAMSES II provides the astronomical community with the first purely photometric tool for hunting SySts in the local universe.
Citation
Angeloni, R., Gonçalves, D. R., Akras, S., Gimeno, G., Diaz, R., Scharwächter, J., …Ribeiro, M. D. (2019). RAMSES II: RAMan Search for Extragalactic Symbiotic Stars Project Concept, Commissioning, and Early Results from the Science Verification Phase. Astronomical Journal, 157(4), Article 156. https://doi.org/10.3847/1538-3881/ab0cf7
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 4, 2019 |
Online Publication Date | Mar 27, 2019 |
Publication Date | Apr 30, 2019 |
Deposit Date | Apr 11, 2019 |
Publicly Available Date | Apr 11, 2019 |
Journal | Astronomical Journal |
Print ISSN | 0004-6256 |
Publisher | IOP Publishing |
Peer Reviewed | Peer Reviewed |
Volume | 157 |
Issue | 4 |
Article Number | 156 |
DOI | https://doi.org/10.3847/1538-3881/ab0cf7 |
Public URL | https://durham-repository.worktribe.com/output/1303895 |
Files
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