cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57780/esa-07zvdcj
title: 16459

description: We propose to obtain a color-magnitude diagram (CMD) of the globular cluster (GC) EXT8 in M31. With a metallicity of CORCHETE_OPENFe-HCORCHETE_CLOSE=-2.9 comma  EXT8 is by far the most metal-poor GC yet identified comma  and as such it provides us with unique information on CMD morphology at this low metallicity. At the same time comma  it challenges theories for the formation of GCs in the context of hierarchical galaxy formation. We will image the cluster with WFC3 in the F300X comma  F606W comma  and F814W filters and obtain a CMD that reaches below the horizontal branch.  The observations will thus provide the first empirical insight into horizontal branch morphology in a GC near CORCHETE_OPENFe-HCORCHETE_CLOSE=-3. Photometry of stars on the red giant branch will provide an independent verification of the spectroscopic metallicity determination and will constrain any metallicity spread present in the cluster (that might be suggestive of an origin as a stripped nucleus).
DOI: 10.15156/bio/sh1283853.09fu
title: SH1283853.09FU

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-0913svm
title: 16263

description: Two new comma  potentially causally correlated comma  observational phenomena have recently been discovered in spatially resolved imagery of debris disksdoublePoint outward moving features traveling at super-Keplerian velocities and changes in the color of the AU Mic debris disk. To date comma  these are the only moving structures and the only observed color change seen in spatially resolved debris disks. We propose to use the only observational facility capable of yielding high fidelity optical coronagraphic spectroscopy of AU Mic.s disk comma  HST-STIS comma  to obtain second epoch G750L and first epoch G430L spectroscopy. These data will enable us todoublePoint a) quantify color changes in the disk over a 2x greater time baseline (16 yrs) than previously achieved  b) determine whether the disk.s color between 30-45 au continues to change as additional fast moving features pass by  c) better quantify the size of dust grains whose spatial distribution has changed  and d) confirm and better quantify whether small grains populate small (10-30 au) stellocentric distances. Derived grain size distributions will be linked to dynamical models proposed for the origin of fast moving features in this system.
DOI: 10.15156/bio/sh1283854.09fu
title: SH1283854.09FU

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-09yhg5k
title: 16596

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: 10.57780/esa-0afnjoq
title: 17116

description: Less than one-third of the baryons in a galaxy are in the stars and gaseous disk comma  with the rest being in a gaseous halo region that may extend to or beyond R_200. According to models comma  this is because feedback from stars heats the halo gas comma  shaping galaxy evolution and regulating star formation today.  Most of the extended gaseous mass is near the virial temperature comma   virgul10elev6.3 K for L* galaxies comma  and this gas is measured by the O VII and O VIII lines in the X-rays.  The other essential halo gas property is the net cooling rate comma  measured from the O VI line comma  which carries the cooling as it passes through the virgul10elev5.5 K range.  These lines define the most important aspects of halo gas models -- a cooling flow with feedback.  The X-ray lines in external galaxies will be measured with future X-ray observatories comma  such as Athena or Arcus comma  while only HST-COS can measure the O VI line.  This proposed legacy program will nearly triple the redshift space for which all three lines will be observed along the same sightlines comma  producing about 30 absorption systems. This will provide enough statistical power to determine halo properties comma  including the feedback efficiency comma  metallicity comma  and departures from steady state.
DOI: 10.15156/bio/sh1283855.09fu
title: SH1283855.09FU

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-0b72q1n
title: 16755

description: Binary population synthesis models predict that virgul30% of massive stars will have their hydrogen envelopes removed via interaction with a binary companion. The resulting ''stripped.. helium cores are relatively long-lived comma  hot comma  compact comma  and emit extreme ultraviolet radiation. As a result comma  they represent a critical piece in our understanding of the ionizing radiation from stellar populations as well as the nature of supernova and gravitational wave progenitors. However comma  despite their importance and predicted ubiquity comma  observations have remained elusive. This is now changing. Using UV maps of the Magellanic Clouds comma  a sample of candidate systems has been identified. Optical spectroscopy reveals stars with temperatures in excess of 60 comma 000 K comma  but luminosities intermediate between Wolf-Rayet and subdwarf stars. A lack of strong emission line features indicates their mass loss rates must be more than an order of magnitude lower than previously assumed based on extrapolations from higher luminosity stars. Here comma  we propose to obtain HST-COS spectra of a sample of 7 of these helium stars in the Magellanic Clouds. UV observations are necessary to measure their mass loss and wind parameters comma  and this sample was chosen to allow the first observational constraints of these parameters as a function of both luminosity and metallicity. Precise mass loss parameters will have a large impact on the stellar radii comma  ionizing radiation comma  and final surface composition of stripped helium stars. These HST-COS observations will therefore provide vital constraints for models of binary evolution comma  impacting our understanding of supernova progenitors comma  gravitational wave sources comma  and ionizing radiation.
DOI: 10.15156/bio/sh1283856.09fu
title: SH1283856.09FU

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-0dq14rn
title: 16468

description: The goal of this program is to obtain external data to allow us to derive FUV dispersion solutions for COS-FUV G130M grating at LP5.  The G130M dispersion solutions are 1st order polynomials and the goal of this program is to         1) derive updated dispersion coefficients and          2) derive updated zero points.  The emission-line target epsilon Eridani is used. This program is split into two visits (3 orbits and 2 orbits) so that we avoid a single 4 orbit visit. It is instead designed such that Visit 01 will obtain G130M-FUVA 1291 comma  1300 comma  and 1327 data comma  and visit 02 will obtain G130M-FUVA 1318 and 1309 data. Wavelength solutions for G130M-FUVB (1291) will be derived using data of AV75 from the LP5 spectral resolution program comma  16467 comma  as was done at LP4. G130M cenwave 1222 will remain at LP4 comma  so we will not be calibrating it at LP5.  The exposure times comma  and the number of orbits requested comma  are driven by the number of counts needed to achieve good correlations. The Eps Eri spectrum contains many chromospheric emission lines across the FUV region comma  but Lyman alpha is too bright for G130M FUVB. The Eps Eri spectrum needs to achieve at least S-N virgul5 (virgul25 counts) in the peak of the weaker emission lines to allow good cross correlation for the primary cenwaves. Different weak features across the difference G130M cenwaves were used to calculate the exposure times needed and comma  it was determined that a full orbit exposure will give us the needed S-N needed.
DOI: 10.57780/esa-0evhky2
title: 16833

description: This program uses the deuterium lamp to illuminate the regions of the detector being used to collect spectra during Cycle 29. The data obtained will be used to create gain maps of the detector. Because of the strongly varying intensity of the lamp as a function of wavelength comma  G130M-1309 data will be obtained for Segment A comma  and G160M-1600 will be used for Segment B.  Gain map data will be obtained both before and after any change is made to any nominal high voltage value on either segment comma  and before and after any lifetime move. Obtaining a gain map at these times will help to improve the modeling of the modal gain as a function of time and extracted charge comma  since it will provide data that cover the full time span of each high voltage at each LP. Improving these models will allow better predictions of the future lifetime of the detector.
DOI: 10.15156/bio/sh1283857.09fu
title: SH1283857.09FU

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-0ey662w
title: 16881

description: Recently comma  LAMOST-J0240 was identified as a likely second propeller in a cataclysmic variable (CV) system with optical properties that are very similar to the original propellerdoublePoint AE Aqr. Only after the Cycle 29 proposal deadline was the white dwarf (WD) rotation in LAMOST-J0240 detected with a period of just 25s comma  making it the fastest spinning WD in a CV binary. We propose ultraviolet spectroscopy of this newly confirmed propeller to tests two theories of magnetic CV evolution. First comma  we will use the CIV and NV emission line ratio comma  observable only in the FUV comma  to test the thermal time-scale mass transfer model as the way to spin-up WDs. Peculiar CNO abundance ratios are a signature of unstable mass transfer that can reach down to the companion star.s core. Inverted NV-CIV ratios are seen in CV systems with WD spin periods between 30s and 40s. Second comma  we will test the crystallization theory for generating magnetic fields in WDs by precisely measuring the WD surface temperature. In an analogy with convective planetary magnetic field generation comma  only fast-spinning WDs that have cooled to the point of core crystallization form significant fields. Being a propeller comma  LAMOST-J0240 clearly has a fast rotating comma  magnetic WD comma  and the model predicts that its surface temperature should be half of the ground-based limit of 25000K.  Further comma  the data will establish a baseline for estimating the spin-down age of the WD to constrain the time since the unstable mass transfer event.
DOI: 10.15156/bio/sh1283858.09fu
title: SH1283858.09FU

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-0i4cl1b
title: 16407

description: This program will observe PN VY2-2 near the center of the field and at additional positons using the WFC3 IR G102 and G141 grisms. The data will be used to calculate wavelength solutions for the grisms comma  and will be compared with those derived from previous programsdoublePoint 15727 15586 14993 14543 14385 14023 13582  13580 13093 12703 12356  to monitor for potential time evolution of the calibration.
DOI: 10.57780/esa-0ickomn
title: 16869

description: This program will obtain spectropolarimetry observations of a second polarized source to better calibrate the wavelengths < 0.75 microns comma  and to rule out an ambiguity in the polarization angle zero point from the first polarized source. In addition comma  the existing observations of the polarized calibrator are not sufficient to calibrate at wavelengths shorter that virgul0.65 micronswith any fidelity comma  but do provide insight into the calibration at longer wavelengths.The main goal is to commission a new capability for HST-ACS-WFC by calibrating the combination of the G800L grism with the POLV polarizers to provide spectropolarimetry (R = 69 - 131) from 0.55 - 1.05 microns.
DOI: 10.15156/bio/sh1283859.09fu
title: SH1283859.09FU

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-0rorckx
title: 16890

description: We request D-configuration HI observations as well as HST data to image three ultra-diffuse galaxies (UDGs) which are in a group environment and plausibly influenced by tidal forces. These dwarfs provide evidence that UDGs can form through interactions comma  although it is not clear whether they are normal dwarf galaxies that have been 'puffed up. during an interaction or if they are tidal dwarf galaxies comma  the dark matter-free stellar aggregations that can result from gas-rich major galaxy encounters. Alternatively comma  these galaxies may have formed as UDGs through some other mechanism comma  and are now associated with a larger galaxy halo. The deep VLA observations are essential for pinpointing HI emission associated with each dwarf and any tidal material. The HST observations will allow for a detailed morphological analysis of each interacting dwarf and will measure their globular cluster content -- a powerful discriminant between formation scenarios. Our team has recently demonstrated the use of combined VLA HI and HST observations in two UDGs comma  showing that they likely formed via tidal heating of normal dwarf galaxies. This proposal will more than double the sample of objects studied in this way comma  with a focus on systems that show some evidence for recent star formation.
DOI: 10.15156/bio/sh1283860.09fu
title: SH1283860.09FU

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.