cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57780/esa-0sp285u
title: 17069

description: The Low-Redshift Lyman Continuum Survey (LzLCS) is a HST Large program using the Cosmic Origins Spectrograph to provide direct measurements of the ionizing radiation (Lyman continuum  LyC) of 66 star-forming galaxies. The completed survey showed that virgul50% of LzLCS galaxies are LyC emitters. Most of these objects are analogous to the high-z galaxies responsible for initiating and sustaining the epoch of reionization (EoR) comma  and virgul70% have Lyman-alpha EW>25 Angstrom.  However the COS observations are spatially unresolved and capture only light emitted from a vignetted 2.5 arcsec region comma  centered upon the galaxies.  Here we propose a 119-orbit program to obtain spatially resolved panchromatic imaging of 41 of these galaxies to closely examine the physical properties and geometry of their central and outer regions. We will obtain images in five filters (far-UV to visible) and produce maps of the stellar population and Lyman-alpha emission comma  and facilitate numerous investigations relevant for calibrating proxies of LyC output. The program will map the dust obscuration comma  star-formation rate and history comma  and ionizing stellar properties. These Ly-alpha images will provide essential information regarding the physical state of the ISM and its intimate role in regulating LyC transmission comma  by contrasting line and continuum images to test resonance scattering. The combined dataset will provide many unique measurements that are well-aligned with the UV initiative comma  have enormous archival utility comma  and will produce a dataset that can be applied directly to JWST studies of the EoR.
DOI: 10.57780/esa-0st0gnf
title: 16686

description: Faint M31 satellites are among the few systems that allow us to study low-mass galaxy formation physics in detail outside of the Milky Way (MW) halo. Though HST is systematically measuring the star formation histories (SFHs) and proper motions of all M31 satellites comma  very few faint M31 satellites have measured resolved star metallicities comma  due to a paucity of bright comma  spectroscopically accessible stars.   We propose deep WFC3-UVIS F395N (Ca H  and  K) imaging to measure metallicities (to a precision of virgul0.1-0.2 dex) for virgul100 individual red giants comma  a number comparable to typically MW satellites comma  in 3 faint M31 satellites. This order-of-magnitude improvement enables the first detailed study of metallicity distribution functions (MDFs) in faint M31 satellites.  As shown in MW satellites comma  MDFs uniquely encode the signature of baryonic processes that shape a galaxy.s evolution (e.g. comma  inflows comma  outflows comma  stripping). We will (1) characterize the MDFs for each system and compare them to each other and to MW satellites  (2) combine our MDFs with HST-based SFHs and orbital histories to constrain the baryonic processes and environmental mechanisms that shaped their evolution  and (3) publish stellar metallicity catalogs for community spectroscopic followup now (brightest stars) or with ELTs.  This program will provide new insight into the formation of faint satellites galaxies outside the MW halo. Measuring high-fidelity MDFs is only possible due to the excellent blue-sensitivity and angular resolution of HST -- no other ground- or space-based facility can acquire this data. This program will demonstrate how HST can provide MDFs for faint galaxies throughout the M31 ecosystem.
DOI: 10.15156/bio/sh1283861.09fu
title: SH1283861.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-0szp44f
title: 16406

description: We monitor the WFC3 UVIS shutter performance. The exposures need to be identical to previous cycles. Images with exposure times ranging from 0.5 to 17 seconds will be used to compare the photometric behavior of each shutter blade comma  for short vs long exposures and check for shutter shading effects. Internal flats in each of the 4 amps will be used to monitor the repeatability and shutter shading effects. We will continue to monitor the photometric behavior of blades A and B separately.
DOI: 10.15156/bio/sh1283862.09fu
title: SH1283862.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-0tnjaoq
title: 15966

description: It is a remarkable fact that the shape and strength of the ionizing continuum of the most massive stars has NEVER been spectroscopically mapped comma  at ANY redshift. Locally comma  the sparsity of such stars and the Hydrogen opacity precludes observations comma  and by the time redshift gives us access to these rest wavelengths in distant galaxies they are normally too faint comma  even for HST. Here we propose to acquire comma  for the first time comma  spectroscopy of the ionizing continuum in a star-forming galaxy down to a restframe of 560A (or photon energies of 24 eV) by observing THE brightest known gravitationally lensed galaxy comma  the Sunburst Arc. Our proposed observations - WFC3 grism spectroscopy - will directly probe the strength and spectral shape of the ionizing continuum in this galaxy. This will be the first-ever opportunity to directly compare the measured ionizing continuum against that inferred by the non-ionizing continuum and nebular emission lines. With this unprecedented observation comma  we will directly observe the strength and shape of the ionizing continuum comma  test whether the observed ionizing continuum is capable of producing the previously observed nebular emission lines comma  inform the next generation of theoretical models of stellar populations comma  and determine the impact of binary evolution on the production of ionizing photons. These observations will leave a lasting legacy for Hubble by mapping the unseen source of most extragalactic observationsdoublePoint the ionizing continuum of massive stars.
DOI: 10.57780/esa-0tx2j95
title: 17110

description: Studies of post-starburst galaxies that combine deep imaging and high-quality spectroscopy have led to an increased understanding of the relationship between merging comma  structural transformation comma  and quenching.  Imaging allows for detailed structural studies of galaxies comma  while optical spectra enable precise timing of the cessation of star formation  the combination can distinguish between quenching mechanisms. However comma  at z>1 comma  when quenching of massive galaxies was much more common comma  we still lack comprehensive datasets that provide both for the rare but crucial PSB population. We propose to create that data set with a WFC3-F110W SNAPSHOT program targeting virgul100 z>1 PSBs selected from the DESI Survey Validation sample of Luminous Red Galaxies. We will measure sizes comma  identify merger rates comma  and ultimately study the evolution of the population of recently quenched galaxies as a function of the time since quenching comma  as derived from the spectra. Only by combining the resolution of HST with the deep spectra we have in hand can we reveal the conditions that led to quenching in these massive galaxies.
DOI: 10.15156/bio/sh1283863.09fu
title: SH1283863.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-0udt93x
title: 16371

description: The Space Telescope Science Institute (STScI) Director has decided to devote up to 1000 orbits of Director.s Discretionary time in observing Cycles 27-29 to a new Hubble Ultraviolet Legacy program focused on star formation and associated stellar physics. This new program comma  ULLYSES (UV Legacy Library of Young Stars as Essential Standards) comma  will provide a UV spectroscopic reference sample of young (< 10 Myr) high- and low-mass stars. It will target over virgul150 OB stars in the Magellanic Clouds and lower metallicity galaxies in the Local Group comma  and virgul40 T Tauri stars and brown dwarfs in the Milky Way. In addition comma  ULLYSES will monitor 4 typical T Tauri stars over different rotational phases through at least three rotation periods comma  and over timescales of months to years. The resulting library will provide template spectra of massive stars at metallicities substantially below the well studied comma  while the low mass sample will cover a wide range of ages comma  accretion rates comma  and masses comma  including objects down to well below 0.5 M_sun. The legacy of this large UV dataset on the first 10 Myr of stellar evolution will be enhanced by complementary datasets obtained by the scientific community. In addition to the core goals of the program related to stellar astrophysics of low and high mass stars comma  this data will also enable exciting science in the fields of ISM comma  CGM comma  jets comma  and exoplanets. ULLYSES will be modeled after the Frontier Fields programdoublePoint all data obtained will be non-proprietary. The implementation team at STScI is developing high-level science data products and a sophisticated database and website for disseminating data from the ULLYSES program and ancillary datasets for the ULLYSES target sample from space and ground-based facilities.
DOI: 10.15156/bio/sh1283864.09fu
title: SH1283864.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-0uj6rar
title: 16457

description: We propose to use the G102 (0.8 - 1.1 microns) and G141 (1.1 - 1.65 microns) grisms of Hubble.s Wide Field Camera 3 (WFC3) to study an ultra-hot Neptune. Given its size and orbital period comma  it is an intriguing target for atmospheric characterisation as it is unclear how the planet has managed to maintain its H-He envelope. These Hubble observations will have the capability to unveil the composition of this atmosphere comma  constraining the metallicity and thus providing insights into its formation history comma  as well as being able provide initial measurements of the mass loss for this planet via the helium triplet at 1.083 microns.
DOI: 10.57780/esa-0vmprtb
title: 16262

description: Surface brightness fluctuations in E-S0 galaxies are sufficiently bright in the infrared that they can be recorded with high signal-to-noise in galaxies within 80 Mpc in a single HST orbit.  The SBF luminosity dependence on metallicity and age tracked by color is well established comma  permitting measurements of individual distances accurate to 5%.  This outstanding capability will be used to determine distances for SNAP targets drawn from every massive cluster and the most important E-S0 galaxies outside of massive clusters within 80 Mpc.  Galaxy-galaxy and galaxy-cluster comparisons with elliptical fundamental plane comma  spiral luminosity-linewidth and comma  especially comma  supernova distances will be made whereever possible in order to evaluate random and systematic uncertainties.  SBF can provide distance measures for the cosmological measurement of H0 comparable in accuracy to those of SNIa.  SBF anchored by the tip of the red giant branch zero point offers a competitive and independent alternative to the Cepheid-SNIa route to H0.  The most massive clusters at 40-80 Mpc lie within either the so-called Great Attractor region or the Perseus-Pisces filament.  This range is the sweet spot for HST IR SBF studies - distances too great to be reliably measured from the ground but comfortably accessable with HST in single orbits.  The dynamics in these two complexes are in the strongly non-linear regime with clusters collapsing toward each other.  Numerical action methods will permit the recovery of physical orbits and the determination of masses.  The 3D information on positions and motions affords a unique window into the construction of rich clusters.
DOI: 10.15156/bio/sh1283865.09fu
title: SH1283865.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-0y8cjb7
title: 17089

description: Primitive classes of asteroids comma  namely those of the B comma  P comma  D and C-complex types comma  are not well characterized in terms of surface composition due to a lack of diagnostic spectral features at visible-near infrared (VNIR) wavelengths. This presents a critical problem because these are important objects due to their primitive nature and their links to early solar system processes. Indeed comma   the upcoming Lucy mission will visit C-type asteroid Donaldjohanson and several Trojan asteroids (P and D type asteroids). However comma  despite a lack of spectral features at VNIR wavelengths comma  these objects do exhibit varying strengths of UV absorption comma  as observed by the International Ultraviolet Explorer (IUE) comma  which may be related to volatile abundance and thermal history. We propose to observe 6 low-albedo class main belt asteroids to characterize them in terms of their UV spectral shape. We will test the hypothesis that a spectral trend with heliocentric distance should be present comma  based on the changing thermal and compositional environment.
DOI: 10.15156/bio/sh1283866.09fu
title: SH1283866.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-0zgbyxu
title: 16754

description: We propose HST time-resolved spectroscopy of a rare comma  eclipsing white dwarf-brown dwarf binary. The brown dwarf in the binary is a mid-L dwarf and is irradiated by its 10 comma 000 K white dwarf companion. The brown dwarf totally eclipses the white dwarf and the white dwarf parameters are well defined comma  meaning there is a directly measured radius of the brown dwarf comma  which is inflated compared to models of field dwarfs at the same age.  As such this is the only inflated comma  irradiated cloudy L dwarf where atmospheric characterisation is possible comma  leading to insights into the processes occurring in the atmosphere.  We will obtain phase resolved spectra between 1.1 and 1.7 microns using WFC3 with the G141 set up in time-series mode. We will combine our spectra with global circulation models and atmospheric models todoublePoint 1) Determine the effective temperature of the brown dwarf comma  2) Study day-night heat redistribution in unprecedented detail 3) Determine if there are significant nightside clouds.  HST can uniquely obtain the high-precision comma  time-resolved comma  near-infrared spectroscopy required by our science goals.
DOI: 10.57780/esa-102hww5
title: 16248

description: We have discovered spectacular vast molecular gas reservoirs reaching tens of kpc outside of two high-redshift post-starburst galaxies as part of an ongoing ALMA survey of such objects. While the host galaxies are only 3-5kpc in size comma  nearly half the total molecular gas in each system extends 25-45kpc from the hosts. This discovery was unexpected and both the scale and magnitude of the extended gas features are unprecedented at any redshift.  The origin of the highly extended molecular gas we have discovered is unclear comma  but may be related to AGN outflows comma  stripped tidal tails comma  and-or material cooled from hotter circumgalactic gas - the spatial resolution and sensitivity of HST are needed to distinguish which. We propose an efficient comma  high-impact program using WFC3 G102 slitless spectroscopy and F105W direct imaging to determine the origins of the remarkable gas features and their broader implications for galaxy evolution comma  including galactic feedback comma  the formation of extended stellar halos comma  and circumgalactic metal enrichment. These observations are designed to detect and resolve in-situ star formation within the extended gas features comma  identify stellar tidal debris and close-in merging companions comma  and spectroscopically map out the local environment on 1Mpc scales. Together comma  the combination of direct imaging and slitless spectroscopy can uniquely determine the origin of the incredible molecular gas structures we have found and place this unexpected discovery in broader context.
DOI: 10.15156/bio/sh1283867.09fu
title: SH1283867.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.