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HD 219134 Revisited: Planet d Transit Upper Limit and Planet f Transit Nondetection with ASTERIA and TESS
Vanderburg, Andrew; Latham, David W.; Schlieder, Joshua E. +38 more
HD 219134 is a K3V dwarf star with six reported radial-velocity discovered planets. The two innermost planets b and c show transits, raising the possibility of this system to be the nearest (6.53 pc), brightest (V = 5.57) example of a star with a compact multiple transiting planet system. Ground-based searches for transits of planets beyond b and …
Reconstruction of Magnetospheric Storm Time Dynamics Using Cylindrical Basis Functions and Multi Mission Data Mining
Sitnov, M. I.; Tsyganenko, N. A.; Andreeva, V. A.
First results are presented of the modeling of magnetospheric storm events, based on: (i) a new method to represent the magnetic field by means of the so called cylindrical basis functions, (ii) the data mining approach by Sitnov et al. (2008); https://doi.org/10.1029/2007ja013003, and (iii) upgra…
The role of SPICA-like missions and the Origins Space Telescope in the quest for heavily obscured AGN and synergies with Athena
Pozzi, F.; Rodighiero, G.; Feltre, A. +21 more
In the black hole (BH)-galaxy co-evolution framework, most of the star formation (SF) and the BH accretion are expected to take place in highly obscured conditions. The large amount of gas and dust absorbs most of the UV-to-soft-X radiation and re-emits it at longer wavelengths, mostly in the IR. Thus, obscured active galactic nuclei (AGN) are ver…
Constraining Progenitors of Observed Low-mass X-ray Binaries Using Convection and Rotation-Boosted Magnetic Braking
Van, Kenny X.; Ivanova, Natalia
We present a new method for constraining the mass transfer evolution of low-mass X-ray binaries (LMXBs)-a reverse population synthesis technique. This is done using the detailed 1D stellar evolution code MESA (Modules for Experiments in Stellar Astrophysics) to evolve a high-resolution grid of binary systems spanning a comprehensive range of initi…
Revisiting Newly Large Magellanic Cloud Age-gap Star Clusters
Piatti, Andrés E.
Recently, a noticeable number of new star clusters was identified in the outskirts of the Large Magellanic Cloud (LMC) populating the so-called star-cluster age gap, a space of time (∼4-12 Gyr) where the only known star cluster is up-to-date ESO 121-SC 03. We used Survey of the Magellanic Stellar History DR2 data sets, as well as those employed to…
Evolution of galaxy scaling relations in clusters at 0.5 < z < 1.5
Böhm, A.; Dannerbauer, H.; Hoyos, C. +4 more
Aims: We present new gas kinematic observations with the OSIRIS instrument at the GTC for galaxies in the Cl1604 cluster system at z ∼ 0.9. These observations together with a collection of other cluster samples at different epochs analyzed by our group are used to study the evolution of the Tully-Fisher, velocity-size, and specific angular mo…
The precessing jets of classical nova YZ Reticuli
Blundell, Katherine M.; Lee, Steven; McLoughlin, Dominic +1 more
The classical nova YZ Reticuli was discovered in 2020 July. Shortly after this, we commenced a sustained, highly time-sampled coverage of its subsequent rapid evolution with time-resolved spectroscopy from the Global Jet Watch observatories. Its H-alpha complex exhibited qualitatively different spectral signatures in the following weeks and months…
Elemental Abundances of the Hot Atmosphere of Luminous Infrared Galaxy Arp 299
Fukazawa, Yasushi; Gu, Liyi; Zhou, Ping +8 more
Hot atmospheres of massive galaxies are enriched with metals. Elemental abundances measured in the X-ray band have been used to study the chemical enrichment of supernova remnants, elliptical galaxies, groups, and clusters of galaxies. Here we measure the elemental abundances of the hot atmosphere of luminous infrared galaxy Arp 299 observed with …
The mid-infrared Leavitt law for classical Cepheids in the Magellanic Clouds
Wuyts, Stijn; Scowcroft, Victoria; Chown, Abigail H.
The Cepheid Leavitt Law (LL), also known as the Period-Luminosity relation, is a crucial tool for assembling the cosmic distance ladder. By combining data from the OGLE-IV catalogue with mid-infrared photometry from the Spitzer Space Telescope, we have determined the 3.6 and 4.5 $\mu$m LLs for the Magellanic Clouds using ~5000 fundamental-mode cla…
2MASX J00423991 + 3017515: an offset active galactic nucleus in an interacting system
Reynolds, Christopher S.; Blecha, Laura; Smith, Krista Lynne +2 more
We present a spectroscopic and imaging study of an abnormal active galactic nucleus (AGN), 2MASX J00423991 + 3017515. This AGN is newly identified in the hard X-rays by the Swift BAT All-Sky survey and found in an edge-on disc galaxy interacting with a nearby companion. Here, we analyse the first optical spectra obtained for this system (taken in …