The VISTA Variables in the V\'ia L\'actea eXtended (VVVX) ESO public survey: Completion of the observations and legacy

Autor: Saito, R. K., Hempel, M., Alonso-García, J., Lucas, P. W., Minniti, D., Alonso, S., Baravalle, L., Borissova, J., Caceres, C., Chené, A. N., Cross, N. J. G., Duplancic, F., Garro, E. R., Gómez, M., Ivanov, V. D., Kurtev, R., Luna, A., Majaess, D., Navarro, M. G., Pullen, J. B., Rejkuba, M., Sanders, J. L., Smith, L. C., Albino, P. H. C., Alonso, M. V., Amôres, E. B., Angeloni, R., Arias, J. I., Arnaboldi, M., Barbuy, B., Bayo, A., Beamin, J. C., Bedin, L. R., Bellini, A., Benjamin, R. A., Bica, E., Bonatto, C. J., Botan, E., Braga, V. F., Brown, D. A., Cabral, J. B., Camargo, D., Garatti, A. Caratti o, Carballo-Bello, J. A., Catelan, M., Chavero, C., Chijani, M. A., Clariá, J. J., Coldwell, G. V., Peña, C. Contreras, Ramos, R. Contreras, Corral-Santana, J. M., Cortés, C. C., Cortés-Contreras, M., Cruz, P., Daza-Perilla, I. V., Debattista, V. P., Dias, B., Donoso, L., D'Souza, R., Emerson, J. P., Federle, S., Fermiano, V., Fernandez, J., Fernández-Trincado, J. G., Ferreira, T., Lopes, C. E. Ferreira, Firpo, V., Flores-Quintana, C., Fraga, L., Froebrich, D., Galdeano, D., Gavignaud, I., Geisler, D., Gerhard, O. E., Gieren, W., Gonzalez, O. A., Gramajo, L. V., Gran, F., Granitto, P. M., Griggio, M., Guo, Z., Gurovich, S., Hilker, M., Jones, H. R. A., Kammers, R., Kuhn, M. A., Kumar, M. S . N., Kundu, R., Lares, M., Libralato, M., Lima, E., Maccarone, T. J., Cortés, P. Marchant, Martin, E. L., Masetti, N., Matsunaga, N., Mauro, F., McDonald, I., Mejías, A., Mesa, V., Milla-Castro, F. P., Minniti, J. H., Bidin, C. Moni, Montenegro, K., Morris, C., Motta, V., Navarete, F., Molina, C. Navarro, Nikzat, F., Castellón, J. L. Nilo, Obasi, C., Ortigoza-Urdaneta, M., Palma, T., Parisi, C., Ramírez, K. Pena, Pereyra, L., Perez, N., Petralia, I., Pichel, A., Pignata, G., Alegría, S. Ramírez, Rojas, A. F., Rojas, D., Roman-Lopes, A., Rovero, A. C., Saroon, S., Schmidt, E. O., Schröder, A. C., Schultheis, M., Sgró, M. A., Solano, E., Soto, M., Stecklum, B., Steeghs, D., Tamura, M., Tissera, P., Valcarce, A. A. R., Valotto, C. A., Vasquez, S., Villalon, C., Villanova, S., Cádiz, F. Vivanco, Bacigalupo, R. Zelada, Zijlstra, A., Zoccali, M.

Publikováno v: A&A 689, A148 (2024)

The ESO public survey VISTA Variables in the V\'ia L\'actea (VVV) surveyed the inner Galactic bulge and the adjacent southern Galactic disk from $2009-2015$. Upon its conclusion, the complementary VVV eXtended (VVVX) survey has expanded both the temp

Externí odkaz: http://arxiv.org/abs/2406.16646

The most variable VVV sources: eruptive protostars, dipping giants in the Nuclear Disc and others

Autor: Lucas, P. W., Smith, L. C., Guo, Z., Peña, C. Contreras, Minniti, D., Miller, N., Alonso-García, J., Catelan, M., Borissova, J., Saito, R. K., Kurtev, R., Navarro, M. G., Morris, C., Muthu, H., Froebrich, D., Ivanov, V. D., Bayo, A., Garatti, A. Caratti o, Sanders, J. L.

We have performed a comprehensive search of a VISTA Variables in the Via Lactea (VVV) database of 9.5 yr light curves for variable sources with $\Delta K_s \ge 4$ mag, aiming to provide a large sample of high amplitude eruptive young stellar objects

Externí odkaz: http://arxiv.org/abs/2401.14471

Spectroscopic confirmation of high-amplitude eruptive YSOs and dipping giants from the VVV survey

Autor: Guo, Zhen, Lucas, P. W., Kurtev, R., Borissova, J., Peña, C. Contreras, Yurchenko, S. N., Smith, L. C., Minniti, D., Saito, R. K., Bayo, A., Catelan, M., Alonso-García, J., Garatti, A. Caratti o, Morris, C., Froebrich, D., Tennyson, J., Maucó, K., Aguayo, A., Miller, N., Muthu, H. D. S.

During the pre-main-sequence (pre-MS) evolution stage of a star, significant amounts of stellar mass are accreted during episodic accretion events, such as multi-decade FUor-type outbursts. Here, we present a near-infrared spectroscopic follow-up stu

Externí odkaz: http://arxiv.org/abs/2401.14464

The globular cluster VVV CL002 falling down to the hazardous Galactic centre

Autor: Minniti, D., Matsunaga, N., Fernandez-Trincado, J. G., Otsubo, S., Sarugaku, Y., Takeuchi, T., Katoh, H., Hamano, S., Ikeda, Y., Kawakita, H., Lucas, P. W., Smith, L. C., Petralia, I., Garro, E. R., Saito, R. K., Alonso-Garcia, J., Gomez, M., Navarro, M. G.

Context. The Galactic centre is hazardous for stellar clusters because of the strong tidal force. Supposedly, many clusters were destroyed and contributed stars to the crowded stellar field of the bulge and the nuclear stellar cluster. However, it is

Externí odkaz: http://arxiv.org/abs/2312.16028

VVV-WIT-12 and its fashionable nebula: a four year long period Young Stellar Object with a light echo?

Autor: Saito, Roberto K., Stecklum, Bringfried, Minniti, Dante, Lucas, Philip W., Guo, Zhen, Smith, Leigh C., Fraga, Luciano, Navarete, Felipe, Beamín, Juan Carlos, Morris, Calum

We report the serendipitous discovery of VVV-WIT-12, an unusual variable source that seems to induce variability in its surrounding nebula. The source belongs to the rare objects that we call WITs (short for What Is This?) discovered within the VISTA

Externí odkaz: http://arxiv.org/abs/2311.01593