Zobrazeno 1 - 10
of 722
pro vyhledávání: '"Grijs, R."'
Autor:
Buder, S., Kos, J., Wang, E. X., McKenzie, M., Howell, M., Martell, S. L., Hayden, M. R., Zucker, D. B., Nordlander, T., Montet, B. T., Traven, G., Bland-Hawthorn, J., De Silva, G. M., Freeman, K. C., Lewis, G. F., Lind, K., Sharma, S., Simpson, J. D., Stello, D., Zwitter, T., Amarsi, A. M., Armstrong, J. J., Banks, K., Beavis, M. A., Beeson, K., Chen, B., Ciucă, I., Da Costa, G. S., de Grijs, R., Martin, B., Nataf, D. M., Ness, M. K., Rains, A. D., Scarr, T., Vogrinčič, R., Wang, Z., Wittenmyer, R. A., Xie, Y., Collaboration, The GALAH
The stars of the Milky Way carry the chemical history of our Galaxy in their atmospheres as they journey through its vast expanse. Like barcodes, we can extract the chemical fingerprints of stars from high-resolution spectroscopy. The fourth data rel
Externí odkaz:
http://arxiv.org/abs/2409.19858
Autor:
Milone, A. P., Cordoni, G., Marino, A. F., D'Antona, F., Bellini, A., Di Criscienzo, M., Dondoglio, E., Lagioia, E. P., Langer, N., Legnardi, M. V., Libralato, M., Baumgardt, H., Bettinelli, M., Cavecchi, Y., de Grijs, R., Deng, L., Hastings, B., Li, C., Mohandasan, A., Renzini, A., Vesperini, E., Wang, C., Ziliotto, T., Carlos, M., Costa, G., Dell'Agli, F., Di Stefano, S., Jang, S., Martorano, M., Simioni, M., Tailo, M., Ventura, P.
Publikováno v:
A&A 672, A161 (2023)
In the past years, we have undertaken an extensive investigation of LMC and SMC star clusters based on HST data. We present photometry and astrometry of stars in 101 fields observed with the WFC/ACS, UVIS/WFC3 and NIR/WFC3 cameras. These fields compr
Externí odkaz:
http://arxiv.org/abs/2212.07978
Autor:
Niederhofer, F., Cioni, M. -R. L., Schmidt, T., Bekki, K., de Grijs, R., Ivanov, V. D., Oliveira, J. M., Ripepi, V., Subramanian, S., van Loon, J. Th.
We present proper motion (PM) measurements within the central region of the Large Magellanic Cloud (LMC) using near-infrared data from the VISTA survey of the Magellanic Cloud system (VMC). This work encompasses 18 VMC tiles covering a total sky area
Externí odkaz:
http://arxiv.org/abs/2203.14369
Autor:
Ripepi, V., Chemin, L., Molinaro, R., Cioni, M. R. L., Bekki, K., Clementini, G., de Grijs, R., De Somma, G., Youssoufi, D. El, Girardi, L., Groenewegen, M. A. T., Ivanov, V., Marconi, M., McMillan, P. J., van Loon, J. Th.
We employed the {\it VISTA near-infrared $YJK_\mathrm{s}$ survey of the Magellanic System} (VMC), to analyse the $Y,\,J,\,K_\mathrm{s}$ light curves of $\delta$ Cepheid stars (DCEPs) in the Large Magellanic Cloud (LMC). Our sample consists of 4408 ob
Externí odkaz:
http://arxiv.org/abs/2203.01780
Autor:
Cusano, F., Moretti, M. I., Clementini, G., Ripepi, V., Marconi, M., Cioni, M. -R. L., Rubele, S., Garofalo, A., de Grijs, R., Groenewegen, M. A. T., Oliveira, J. M., Subramanian, S., Sun, N. -C., van Loon, J. Th.
We present results from an analysis of $\sim$ 29,000 RR Lyrae stars located in the Large Magellanic Cloud (LMC). For these objects, near-infrared time-series photometry from the VISTA survey of the Magellanic Clouds system (VMC) and optical data from
Externí odkaz:
http://arxiv.org/abs/2103.15492
Autor:
Niederhofer, F., Cioni, M. -R. L., Rubele, S., Schmidt, T., Diaz, J. D., Matijevic, G., Bekki, K., Bell, C. P. M., de Grijs, R., Youssoufi, D. El, Ivanov, V. D., Oliveira, J. M., Ripepi, V., Subramanian, S., Sun, N. -C., van Loon, J. Th.
We used data from the near-infrared VISTA survey of the Magellanic Cloud system (VMC) to measure proper motions (PMs) of stars within the Small Magellanic Cloud (SMC). The data analysed in this study comprise 26 VMC tiles, covering a total contiguous
Externí odkaz:
http://arxiv.org/abs/2101.09099
Autor:
Tatton, B. L., van Loon, J. Th., Cioni, M. -R. L., Bekki, K., Bell, C. P. M., Choudhury, S., de Grijs, R., Groenewegen, M. A. T., Ivanov, V. D., Marconi, M., Oliveira, J. M., Ripepi, V., Rubele, S., Subramanian, S., Sun, N. -C.
Galaxy interactions distort the distribution of baryonic matter and can affect star formation. The nearby Magellanic Clouds are a prime example of an ongoing galaxy interaction process. Here we use the intermediate-age ($\sim1$-$10$ Gyr) red clump st
Externí odkaz:
http://arxiv.org/abs/2012.12288
Autor:
Groenewegen, M. A. T., Nanni, A., Cioni, M. -R. L., Girardi, L., de Grijs, R., Ivanov, V. D., Marconi, M., Moretti, M. -I., Oliveira, J. M., Petr-Gotzens, M. G., Ripepi, V., van Loon, J. Th.
Publikováno v:
A&A 636, A48 (2020)
(abridged)Variability is a key property of stars on the asymptotic giant branch (AGB). Their pulsation period is related to the luminosity and mass-loss rate of the star. The long-period variables (LPVs) and Mira variables are the most prominent of a
Externí odkaz:
http://arxiv.org/abs/2003.04025
Autor:
Groenewegen, M. A. T., Cioni, M. -R. L., Girardi, L., de Grijs, R., Ivanov, V. D., Marconi, M., Muraveva, T., Ripepi, V., van Loon, J. Th.
Publikováno v:
A&A 622, A63 (2019)
In this paper JK_s data from the VISTA Magellanic Cloud (VMC) survey are used to investigate the tip of the red giant branch (TRGB) as a distance indicator. A linear fit to recent theoretical models is used which reads M_{K_s} = -4.196 -2.013 (J-K_s)
Externí odkaz:
http://arxiv.org/abs/1812.02581
Autor:
Braga, V. F., Bhardwaj, A., Ramos, R. Contreras, Minniti, D., Bono, G., de Grijs, R., Minniti, J. H., Rejkuba, M.
Publikováno v:
A&A 619, A51 (2018)
Type II Cepheids (T2Cs) are radially pulsating variables that trace old stellar populations and provide distance estimates through their period-luminosity (PL) relation. We trace the structure of old stars in the Bulge using new distance estimates an
Externí odkaz:
http://arxiv.org/abs/1808.10838