Search Publications
A database of synthetic photometry in the GALEX ultraviolet bands for the stellar sources observed with the International Ultraviolet Explorer
Beitia-Antero, Leire; Gómez de Castro, Ana I.
Context. The Galaxy Evolution Explorer (GALEX) has produced the largest photometric catalogue of ultraviolet (UV) sources. As such, it has defined the new standard bands for UV photometry: the near UV band (NUV) and the far UV band (FUV). However, due to brightness limits, the GALEX mission has avoided the Galactic plane which is crucial for astro…
No evidence for large-scale outflows in the extended ionized halo of ULIRG Mrk273
Tadhunter, C. N.; Rose, M.; Spoon, H. +4 more
We present deep new Gran Telescopio Canarias (GTC) narrow-band images and William Herschel Telescope (WHT) long-slit spectroscopy of the merging system Mrk273 that show a spectacular extended halo of warm ionized gas out to a radius of ∼45 kpc from the system nucleus. Outside of the immediate nuclear regions (r > 6 kpc), there is no evidence fo…
HELP*: star formation as a function of galaxy environment with Herschel†
Scott, D.; Sargent, M. T.; Buat, V. +15 more
The Herschel Extragalactic Legacy Project (HELP) brings together a vast range of data from many astronomical observatories. Its main focus is on the Herschel data, which maps dust-obscured star formation over 1300 deg2. With this unprecedented combination of data sets, it is possible to investigate how the star formation versus stellar …
Multi-wavelength Observations of a Subarcsecond Penumbral Transient Brightening Event
Su, J. T.; Cao, W. D.; Deng, Y. Y. +3 more
We report a subarcsecond penumbral transient brightening event with the high-spatial resolution observations from the 1.6 m New Solar Telescope (NST), Interface Region Imaging Spectrograph (IRIS), and the Solar Dynamics Observatory. The transient brightening, whose thermal energy is in the range of nanoflares, has signatures in the chromosphere, t…
Slipping reconnection in a solar flare observed in high resolution with the GREGOR solar telescope
Strassmeier, K. G.; Schmidt, W.; Solanki, S. K. +23 more
A small flare ribbon above a sunspot umbra in active region 12205 was observed on November 7, 2014, at 12:00 UT in the blue imaging channel of the 1.5 m GREGOR telescope, using a 1 Å Ca II H interference filter. Context observations from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO), the Solar Optical Telescop…
Analysis of the WN star WR 102c, its WR nebula, and the associated cluster of massive stars in the Sickle Nebula
Sander, A.; Hamann, W. -R.; Oskinova, L. M. +3 more
Context. The massive Wolf-Rayet type star WR 102c is located near the
Strong-lensing Analysis of the Powerful Lensing Cluster MACS J2135.2-0102 (z = 0.33)
Broadhurst, Tom; Zitrin, Adi
We present a light-traces-mass (LTM) strong-lensing model of the massive lensing cluster MACS J2135.2-0102 (z = 0.33 hereafter MACS2135), known in part for hosting the cosmic eye galaxy lens. MACS2135 is also known to multiply lens a z = 2.3 sub-millimeter galaxy near the brightest cluster galaxy (BCG), as well as a prominent, triply imaged system…
Comparative aeronomy: Molecular ionospheres at Earth and Mars
Withers, Paul; Moore, Luke; Vogt, Marissa F. +6 more
The ionospheres in our solar system vary not only in their electron densities but also in the dominance of atomic versus molecular ions at their altitudes of peak plasma density. With the exception of Earth's F layer composed of atomic oxygen ions and electrons, all other planets have their peak ionospheric layers composed of molecular ions and el…
Redefining the Boundaries of Interplanetary Coronal Mass Ejections from Observations at the Ecliptic Plane
Guerrero, A.; Cid, C.; Saiz, E. +1 more
On 2015 January 6-7, an interplanetary coronal mass ejection (ICME) was observed at L1. This event, which can be associated with a weak and slow coronal mass ejection, allows us to discuss the differences between the boundaries of the magnetic cloud and the compositional boundaries. A fast stream from a solar coronal hole surrounding this ICME off…
Breakout Reconnection Observed by the TESIS EUV Telescope
Reva, A. A.; Ulyanov, A. S.; Kuzin, S. V. +1 more
We present experimental evidence of the coronal mass ejection (CME) breakout reconnection, observed by the TESIS EUV telescope. The telescope could observe solar corona up to 2 R⊙ from the Sun center in the Fe 171 Å line. Starting from 2009 April 8, TESIS observed an active region (AR) that had a quadrupolar structure with an X-point 0.…