Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Carvalho, Adolfo"'
The accretion luminosity of an FU Ori disk is a fundamental system parameter, but a challenging one to estimate for all but the most well-studied systems. FU Ori objects are dynamically evolving accretion disks, especially close in time to the outbur
Externí odkaz:
http://arxiv.org/abs/2410.22270
Autor:
Carvalho, Adolfo S., Doppmann, Greg, Westfall, Kyle B., Pelliccia, Debora, Prochaska, J. Xavier, Hennawi, Joseph, Davies, Frederick B., Brodheim, Max, Wang, Feige, Cooke, Ryan
We present a data reduction pipeline (DRP) for Keck/NIRSPEC built as an addition to the PypeIt Python package. The DRP is capable of reducing multi-order echelle data taken both before and after the detector upgrade in 2018. As part of developing the
Externí odkaz:
http://arxiv.org/abs/2410.19991
The eruptive YSO FU Ori is the eponym of its variable class. FU Ori stars are known to undergo outbursts with amplitudes of $>4$ magnitudes in the $V$ band and durations of several decades. Interaction with a binary companion is one proposed outburst
Externí odkaz:
http://arxiv.org/abs/2409.10796
FU Ori objects are the most extreme eruptive young stars known. Their 4 to 5 magnitude photometric outbursts last for decades and are attributed to a factor of up to 10,000 increase in the stellar accretion rate. The nature of the accretion disk-to-s
Externí odkaz:
http://arxiv.org/abs/2408.11033
Autor:
Carvalho, Adolfo S., Perez, Laura M., Sierra, Anibal, Mellado, Maria Jesus, Hillenbrand, Lynne A., Andrews, Sean, Benisty, Myriam, Birnstiel, Tilman, Carpenter, John M., Guzman, Viviana V., Huang, Jane, Isella, Andrea, Kurtovic, Nicolas, Ricci, Luca, Wilner, David J.
Rings and gaps are among the most widely observed forms of substructure in protoplanetary disks. A gap-ring pair may be formed when a planet carves a gap in the disk, which produces a local pressure maximum following the gap that traps inwardly drift
Externí odkaz:
http://arxiv.org/abs/2406.12819
We present a comprehensive analysis of the post-outburst evolution of the FU Ori object HBC 722 in optical/near-infrared (NIR) photometry and spectroscopy. Using a modified viscous accretion disk model, we fit the outburst epoch SED to determine the
Externí odkaz:
http://arxiv.org/abs/2405.20251
We present evidence in support of the hypothesis that the young stellar object RNO 54 is a mature-stage FU Ori type source. The star was first cataloged as a ``red nebulous object" in the 1980s but appears to have undergone its outburst prior to the
Externí odkaz:
http://arxiv.org/abs/2310.17227
We follow up our photometric study of the post-outburst evolution of the FU Ori object V960 Mon with a complementary spectroscopic study at high dispersion that uses time series spectra from Keck/HIRES. Consistent with the photometric results reporte
Externí odkaz:
http://arxiv.org/abs/2310.02465
Autor:
Carvalho, Adolfo S., Hillenbrand, Lynne A., Hambsch, Franz-Josef, Dvorak, Shawn, Sitko, Michael, Russell, Ray W., Hammond, Victoria, Connelley, Michael, Ashley, Michael C. B., Hankins, Matthew J.
We study the evolution of the FU Ori object V960 Mon since its outburst, using available multi-wavelength photometric time series over 8 years, complemented by several epochs of moderate-dispersion spectrophotometry. We find that the source fading ca
Externí odkaz:
http://arxiv.org/abs/2306.15107
Autor:
Blunt, Sarah, Carvalho, Adolfo, David, Trevor J., Beichman, Charles, Zink, Jon K., Gaidos, Eric, Behmard, Aida, Bouma, Luke G., Cody, Devin, Dai, Fei, Foreman-Mackey, Daniel, Grunblatt, Sam, Howard, Andrew W., Kosiarek, Molly, Knutson, Heather A., Rubenzahl, Ryan A., Beard, Corey, Chontos, Ashley, Giacalone, Steven, Hirano, Teruyuki, Johnson, Marshall C., Lubin, Jack, Murphy, Joseph M. Akana, Petigura, Erik A, Van Zandt, Judah, Weiss, Lauren
Mass, radius, and age measurements of young (<100 Myr) planets have the power to shape our understanding of planet formation. However, young stars tend to be extremely variable in both photometry and radial velocity, which makes constraining these pr
Externí odkaz:
http://arxiv.org/abs/2306.08145