Zobrazeno 1 - 10
of 689
pro vyhledávání: '"Calvet, N."'
Autor:
Espaillat, C. C., Thanathibodee, T., Pittman, C. V., Sturm, J. A., McClure, M. K., Calvet, N., Walter, F. M., Franco-Hernandez, R., Page, J. Muzerolle
We report the first detection of variability in the mid-infrared neon line emission of a protoplanetary disk by comparing a JWST MIRI MRS spectrum of SZ Cha taken in 2023 with a Spitzer IRS SH spectrum of this object from 2008. We measure the [Ne III
Externí odkaz:
http://arxiv.org/abs/2311.07739
Autor:
Oey, M. S., Castro, N., Renzo, M., Vargas-Salazar, I., Suffak, M. W., Ratajczak, M., Monnier, J. D., Szymanski, M. K., Phillips, G. D., Calvet, N., Chiti, A., Micheva, G., Rasmussen, K. C., Townsend, R. H. D.
We present 18 years of OGLE photometry together with spectra obtained over 12 years, revealing that the early Oe star AzV 493 shows strong photometric (Delta I < 1.2 mag) and spectroscopic variability with a dominant, 14.6-year pattern and ~40-day os
Externí odkaz:
http://arxiv.org/abs/2301.11433
Autor:
Espaillat, C. C., Herczeg, G. J., Thanathibodee, T., Pittman, C., Calvet, N., Arulanantham, N., France, K., Serna, Javier, Hernandez, J., Kospal, A., Walter, F. M., Frasca, A., Fischer, W. J., Johns-Krull, C. M., Schneider, P. C., Robinson, C., Edwards, Suzan, Abraham, P., Fang, Min, Erkal, J., Manara, C. F., Alcala, J. M., Alecian, E., Alexander, R. D., Alonso-Santiago, J., Antoniucci, Simone, Ardila, David R., Banzatti, Andrea, Benisty, M., Bergin, Edwin A., Biazzo, Katia, Briceno, Cesar, Campbell-White, Justyn, Cleeves, L. Ilsedore, Coffey, Deirdre, Eisloffel, Jochen, Facchini, Stefano, Fedele, D., Fiorellino, Eleonora, Froebrich, Dirk, Gangi, Manuele, Giannini, Teresa, Grankin, K., Gunther, Hans Moritz, Guo, Zhen, Hartmann, Lee, Hillenbrand, Lynne A., Hinton, P. C., Kastner, Joel H., Koen, Chris, Mauco, K., Mendigutia, I., Nisini, B., Panwar, Neelam, Principe, D. A., Robberto, Massimo, Sicilia-Aguilar, A., Valenti, Jeff A., Wendeborn, J., Williams, Jonathan P., Xu, Ziyan, Yadav, R. K.
The Hubble UV Legacy Library of Young Stars as Essential Standards (ULLYSES) Director's Discretionary Program of low-mass pre-main-sequence stars, coupled with forthcoming data from ALMA and JWST, will provide the foundation to revolutionize our unde
Externí odkaz:
http://arxiv.org/abs/2201.06502
Autor:
Espaillat, C. C., Macias, E., Wendeborn, J., Franco-Hernandez, R., Calvet, N., Rilinger, A., Cleeves, L. I., D'Alessio, P.
A multiwavelength observing campaign of the T Tauri star (TTS) GM Aur was undertaken in 2019 December that obtained Swift X-ray and NUV fluxes, HST NUV spectra, LCOGT ugri and TESS photometry, CHIRON Halpha spectra, ALMA 13CO and C18O line fluxes, an
Externí odkaz:
http://arxiv.org/abs/2111.02454
Autor:
Espaillat, C. C., Robinson, C. E., Romanova, M. M., Thanathibodee, T., Wendeborn, J., Calvet, N., Reynolds, M., Muzerolle, J.
Publikováno v:
Nature volume 597, pages 41-44 (2021)
Magnetospheric accretion models predict that matter from protoplanetary disks accretes onto the star via funnel flows which follow the stellar field lines and shock on the stellar surface leaving a hot spot with a density gradient. Previous work has
Externí odkaz:
http://arxiv.org/abs/2109.00510
Autor:
Manara, C. F., Frasca, A., Venuti, L., Siwak, M., Herczeg, G. J., Calvet, N., Hernandez, J., Tychoniec, Ł., Gangi, M., Alcalá, J. M., Boffin, H. M. J., Nisini, B., Robberto, M., Briceno, C., Campbell-White, J., Sicilia-Aguilar, A., McGinnis, P., Fedele, D., Kóspál, Á., Ábrahám, P., Alonso-Santiago, J., Antoniucci, S., Arulanantham, N., Bacciotti, F., Banzatti, A., Beccari, G., Benisty, M., Biazzo, K., Bouvier, J., Cabrit, S., Garatti, A. Caratti o, Coffey, D., Covino, E., Dougados, C., Eislöffel, J., Ercolano, B., Espaillat, C. C., Erkal, J., Facchini, S., Fang, M., Fiorellino, E., Fischer, W. J., France, K., Gameiro, J. F., Lopez, R. Garcia, Giannini, T., Ginski, C., Grankin, K., Günther, H. M., Hartmann, L., Hillenbrand, L. A., Hussain, G. A. J., James, M. M., Koutoulaki, M., Lodato, G., Maucó, K., Mendigutía, I., Mentel, R., Miotello, A., Oudmaijer, R. D., Rigliaco, E., Rosotti, G. P., Sanchis, E., Schneider, P. C., Spina, L., Stelzer, B., Testi, L., Thanathibodee, T., Vink, J. S., Walter, F. M., Williams, J. P., Zsidi, G.
Publikováno v:
A&A 650, A196 (2021)
The evolution of young stars and disks is driven by the interplay of several processes, notably accretion and ejection of material. Critical to correctly describe the conditions of planet formation, these processes are best probed spectroscopically.
Externí odkaz:
http://arxiv.org/abs/2103.12446
Autor:
Espaillat, C. C., Ribas, Á., McClure, M. K., Hernández, J., Owen, J. E., Avish, N., Calvet, N., Franco-Hernández, R.
The point at which a protoplanetary disk becomes a debris disk is difficult to identify. To better understand this, here we study the $\sim$40~AU separation binary T~54 in the Chamaeleon I cloud. We derive a K5 spectral type for T~54~A (which dominat
Externí odkaz:
http://arxiv.org/abs/1706.05032
Autor:
Monnier, John D., Harries, T. J., Aarnio, A., Adams, F., Andrews, S., Calvet, N., Espaillat, C., Hartmann, L., Hinkley, S., Kraus, S., McClure, M., Oppenheimer, R., Perrin, M., Wilner, D.
In order to look for signs of on-going planet formation in young disks, we carried out the first J-band polarized emission imaging of the Herbig Ae/Be stars HD 150193, HD 163296, and HD 169142 using the Gemini Planet Imager (GPI), along with new H ba
Externí odkaz:
http://arxiv.org/abs/1702.04780
Autor:
Willson, M., Kraus, S., Kluska, J., Monnier, J. D., Ireland, M., Aarnio, A., Sitko, M. L., Calvet, N., Espaillat, C., Wilner, D. J.
Publikováno v:
A&A 595, A9 (2016)
Transitional discs are a class of circumstellar discs around young stars with extensive clearing of dusty material within their inner regions on 10s of au scales. One of the primary candidates for this kind of clearing is the formation of planet(s) w
Externí odkaz:
http://arxiv.org/abs/1608.03629
Autor:
Furlan, E., Fischer, W. J., Ali, B., Stutz, A. M., Stanke, T., Tobin, J. J., Megeath, S. T., Osorio, M., Hartmann, L., Calvet, N., Poteet, C. A., Booker, J., Manoj, P., Watson, D. M., Allen, L.
We present key results from the Herschel Orion Protostar Survey (HOPS): spectral energy distributions (SEDs) and model fits of 330 young stellar objects, predominantly protostars, in the Orion molecular clouds. This is the largest sample of protostar
Externí odkaz:
http://arxiv.org/abs/1602.07314