MEGARA, the R=6000-20000 IFU and MOS of GTC

Carrasco, E.; Paz, A. Gil de; Gallego, J.; Iglésias-Páramo, J.; Cedazo, R.; Vargas, M.; Arrillaga, X.; Avilés, J. L.; Bouquin, Alexandre Y. K.; Carbajo, José Manuel; Cardiel, N.; Carrera, M. A.; Castillo-Morales, A.; Castillo‐Domínguez, E.; Román, Segundo Esteban San; Ferrusca, D.; Gómez-Álvarez, P.; Izazaga-Pérez, Rafael; Lefort, Bertrand; Orozco, J.; Maldonado, Manuel; Delgado, Ismael Martínez; Durán, I.; Mujica, E.; Ortíz, Ricardo; Паез, Гонзало; Pascual, S.; Pérez-Calpena, A.; Picazo-Sanchez, Pablo; Sánchez-Penim, A.; Sánchez-Blanco, E.; Tulloch, Simon; Velázquez, Miguel; Vı́lchez, J. M.; Zamorano, J.; Aguerri, Alfonso L.; Barrado, D.; Bertone, E.; Cava, A.; Catalán-Torrecilla, C.; Cenarro, J.; Chávez, M.; Dullo, Bililign T.; Eliche, C.; García, M. A.; García‐Rojas, J.; Guichard, J.; Delgado, R. M. González; Guzmán, R.; Herrero, A.; Huélamo, N.; Hughes, D. H.; Jiménez-Vicente, J.; Kehrig, C.; Marino, R. A.; Márquez, I.; Masegosa, J.; Mayya, Y. D.; Méndez-Abreu, J.; Mollá, M.; Muñoz–Tuñón, C.; Peimbert, M.; Pérez‐González, Pablo G.; Pérez-Montero, E.; Roca-Fàbrega, S.; Rodriguez, Mario; Rodríguez-Espinosa, J. M.; Rodríguez-Merino, L. H.; Rodríguez-Muñoz, L.; Rosa-González, D.; Sánchez-Almeida, J.; Contreras, C. Sánchez; Sánchez‐Blázquez, P.; Sanchez, S. F.; Sarajedini, Ata; Silich, Sergiy; Tenorio-Tagle, G.; Terlevich, Elena; Terlevich, R.; Torres-Peimbert, S.; Trujillo, Ignacio; Tsamis, Y. G.; Vega, O.

doi:10.1117/12.2313040

Cited by 9 publications

(3 citation statements)

References 15 publications

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“…Observations of SDSS J015800.28+654253.0 were performed with the MEGARA instrument (Gil de Paz et al 2018;Carrasco et al 2018) at the 10.4-m GTC in 2019 September (see Table 1 for details). We used the Large Compact Bundle Integral Field Unit mode (LCB IFU), which provides a field of view (FoV) of 12.…”

Section: Megaramentioning

confidence: 99%

The 60 pc Environment of FRB 20180916B

Tendulkar

Paz

Kirichenko

et al. 2021

ApJL

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Fast Radio Burst FRB 20180916B in its host galaxy SDSS J015800.28+654253.0 at 149 Mpc is by far the closest-known FRB with a robust host galaxy association. The source also exhibits a 16.35day period in its bursting. Here we present optical and infrared imaging as well as integral field spectroscopy observations of FRB 20180916B with the WFC3 camera on the Hubble Space Telescope and the MEGARA spectrograph on the 10.4-m Gran Telescopio Canarias. The 60-90 milliarcsecond (mas) resolution of the Hubble imaging, along with the previous 2.3-mas localization of FRB 20180916B, allow us to probe its environment with a 30-60 pc resolution. We constrain any point-like star-formation or H II region at the location of FRB 20180916B to have an Hα luminosity L Hα 10 37 erg s −1 and, correspondingly, constrain the local star-formation rate to be 10 −4 M yr −1 . The constraint on

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Section: Megaramentioning

confidence: 99%

The 60 pc Environment of FRB 20180916B

Tendulkar

Paz

Kirichenko

et al. 2021

ApJL

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“…For a detailed description of the instrument and its scientific validation see Carrasco et al (2018) Here, we present a sum- Figure 1. Properties of the release stars compared with the whole MEGASTAR library.…”

Section: Introductionmentioning

confidence: 99%

MEGARA-GTC stellar spectral library – II. MEGASTAR first release

Carrasco

Mollá

García-Vargas

et al. 2020

Monthly Notices of the Royal Astronomical Society

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MEGARA is an optical integral field and multi-object fibre-based spectrograph for the 10.4m Gran Telescopio CANARIAS that offers medium to high spectral resolutions (FWHM) of R ≃ 6000, 12000, 20000. Commissioned at the telescope in 2017, it started operation as a common-user instrument in 2018. We are creating an instrument-oriented empirical spectral library from MEGARA-GTC stars observations, MEGASTAR, crucial for the correct interpretation of MEGARA data. This piece of work describes the content of the first release of MEGASTAR, formed by the spectra of 414 stars observed with R ≃ 20000 in the spectral intervals 6420 – 6790 Å and 8370 – 8885 Å, and obtained with a continuum average signal to noise ratio around 260. We describe the release sample, the observations, the data reduction procedure and the MEGASTAR database. Additionally, we include in Appendix A, an atlas with the complete set of 838 spectra of this first release of the MEGASTAR catalogue.

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“…MEGARA is completed with the instrument control, fully integrated in the GTC Control System (GCS), and a set of stand-alone software tools to allow the user to prepare, visualise and fully-reduce the observations. A complete information and final instrument performance on the GTC based on commissioning results can be found in Carrasco et al (2018), , Dullo et al (2019) and Gil de Paz et al (in prep. ).…”

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confidence: 99%

MEGARA-GTC stellar spectral library: I

García-Vargas

Carrasco

Mollá

et al. 2020

Monthly Notices of the Royal Astronomical Society

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MEGARA (Multi Espectrógrafo en GTC de Alta Resolución para Astronomía) is an optical (3650 -9750Å), fibre-fed, medium-high spectral resolution (R = 6000, 12000, 20000) instrument for the GTC 10.4m telescope, commissioned in the summer of 2017, and currently in operation. The scientific exploitation of MEGARA demands a stellar-spectra library to interpret galaxy data and to estimate the contribution of the stellar populations. This paper introduces the MEGARA-GTC spectral library, detailing the rationale behind the catalogue building. We present the spectra of 97 stars (21 individual stars and 56 members of the globular cluster M15, being both sub-samples taken during the commissioning runs; and 20 stars from our on-going GTC Open-Time program). The spectra have R = 20000 in the HR-R and HR-I setups, centred at 6563 and 8633 Å respectively. We describe the procedures to reduce and analyse the data. Then, we determine the best-fitting theoretical models to each spectrum through a χ 2 minimisation technique to derive the stellar physical parameters and discuss the results. We have also measured some absorption lines and indices. Finally, this article introduces our project to complete the library and the database to make the spectra available to the community.

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MEGARA, the R=6000-20000 IFU and MOS of GTC

Cited by 9 publications

References 15 publications

The 60 pc Environment of FRB 20180916B

The 60 pc Environment of FRB 20180916B

MEGARA-GTC stellar spectral library – II. MEGASTAR first release

MEGARA-GTC stellar spectral library: I

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