Fernando Cruz Aguirre
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View article: Double-offset Cassegrain telescopes for the Ultraviolet Type Ia mission concept
Double-offset Cassegrain telescopes for the Ultraviolet Type Ia mission concept Open
Our understanding of cosmology is shaped by Type Ia supernovae (SNe Ia), the runaway thermonuclear detonations of white dwarfs via accretion from a companion star. The nature of this companion star is highly debated, with disparate models …
View article: The 2023 Flight of the Faint Intergalactic-medium Redshifted Emission Balloon
The 2023 Flight of the Faint Intergalactic-medium Redshifted Emission Balloon Open
The second iteration of the Faint Intergalactic-medium Redshifted Emission Balloon (FIREBall-2) is a UV multiobject spectrograph designed to detect emission from the circumgalactic and circumquasar medium at low redshifts ( z < 1). The FIR…
View article: A Nearby Dark Molecular Cloud in the Local Bubble Revealed via H$_2$ Fluorescence
A Nearby Dark Molecular Cloud in the Local Bubble Revealed via H$_2$ Fluorescence Open
A longstanding prediction in interstellar theory posits that significant quantities of molecular gas, crucial for star formation, may be undetected due to being ``dark" in commonly used molecular gas tracers, such as carbon monoxide. We re…
View article: The Ultraviolet Type Ia Supernova CubeSat (UVIa): Science Motivation & Mission Concept
The Ultraviolet Type Ia Supernova CubeSat (UVIa): Science Motivation & Mission Concept Open
The Ultraviolet (UV) Type Ia Supernova Mission (UVIa) is a CubeSat/SmallSat concept that stands to test critical space-borne UV technology for future missions like the Habitable Worlds Observatory (HWO) while elucidating long-standing ques…
View article: MAUVE: An Ultraviolet Astrophysics Probe Mission Concept
MAUVE: An Ultraviolet Astrophysics Probe Mission Concept Open
We present the mission concept “Mission to Analyze the UltraViolet universE” (MAUVE), a wide-field spectrometer and imager conceived during the inaugural NASA Astrophysics Mission Design School. MAUVE responds to the 2023 Announcement of O…
View article: MAUVE: An Ultraviolet Astrophysics Probe Mission Concept
MAUVE: An Ultraviolet Astrophysics Probe Mission Concept Open
We present the mission concept “Mission to Analyze the UltraViolet universE” (MAUVE), a wide-field spectrometer and imager conceived during the inaugural NASA Astrophysics Mission Design School. MAUVE responds to the 2023 Announcement of O…
View article: FIREBall-2 UV balloon telescope in-flight calibration system
FIREBall-2 UV balloon telescope in-flight calibration system Open
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View article: The High-energy Spectrum of the Young Planet Host V1298 Tau
The High-energy Spectrum of the Young Planet Host V1298 Tau Open
V1298 Tau is a young pre-main-sequence star hosting four known exoplanets that are prime targets for transmission spectroscopy with current-generation instruments. This work pieces together observations from the NICER X-ray telescope, the …
View article: The Radiation Environments of Middle-aged F-type Stars
The Radiation Environments of Middle-aged F-type Stars Open
Far-ultraviolet (FUV) emission lines from dwarf stars are important driving sources of photochemistry in planetary atmospheres. Properly interpreting spectral features of planetary atmospheres critically depends on the emission of its host…
View article: The High-Energy Spectrum of the Young Planet Host V1298 Tau
The High-Energy Spectrum of the Young Planet Host V1298 Tau Open
V1298 Tau is a young pre-main sequence star hosting four known exoplanets that are prime targets for transmission spectroscopy with current-generation instruments. This work pieces together observations from the NICER X-ray telescope, the …
View article: Disentangling Stellar and Airglow Emission Lines from Hubble Space Telescope (HST) Cosmic Origins Spectrograph (COS) Spectra
Disentangling Stellar and Airglow Emission Lines from Hubble Space Telescope (HST) Cosmic Origins Spectrograph (COS) Spectra Open
H i Ly α (1215.67 Å) and the O i triplet (1302.17, 1304.86, and 1306.03 Å) are bright far-ultraviolet (FUV) emission lines that trace the stellar chromosphere. Observations of stellar Ly α and O i using the Hubble Space Telescope's (HST) m…
View article: Disentangling Stellar and Airglow Emission Lines from HST-COS Spectra
Disentangling Stellar and Airglow Emission Lines from HST-COS Spectra Open
H I Ly$α$ (1215.67 Å) and the O I triplet (1302.17, 1304.86, and 1306.03 Å) are bright far-ultraviolet (FUV) emission lines that trace the stellar chromosphere. Observations of stellar Ly$α$ and O I using the Hubble Space Telescope's (HST)…