A Far-ultraviolet Atlas of Low-resolution Hubble Space Telescope Spectra of T Tauri Stars

Abstract

We present a far-ultraviolet (FUV) spectral atlas consisting of spectra of 91 pre-main sequence stars. Most stars in this sample were observed with the Space Telescope Imaging Spectrograph (STIS) and Advanced Camera for Surveys (ACS) on the \emph{Hubble Space Telescope} (\emph{HST}). We find strong correlations among the \ion{O}{1} $\lambda$1304 triplet, %\ion{C}{2} $\lambda$1335, the \ion{Si}{4} $\lambda \lambda$1394/1403 doublet, the \ion{C}{4} $\lambda$1549 doublet, and the \ion{He}{2} $\lambda$1640 line luminosities. For classical T Tauri stars (CTTSs), we also find strong correlations between these lines and the accretion luminosity, suggesting that these lines form in processes related to accretion. These FUV line fluxes and X-ray luminosity correlate loosely with large scatters. The FUV emission also correlates well with H$\alpha$, H$\beta$, and \ion{Ca}{2} K line luminosities. These correlations between FUV and optical diagostics can be used to obtain rough estimates of FUV line fluxes from optical observations. Molecular hydrogen (H${}_2$) emission is generally present in the spectra of actively accreting CTTSs but not the weak-lined T Tauri stars (WTTSs) that are not accreting. The presence of H${}_2$ emission in the spectrum of HD 98800 N suggests that the disk should be classified as actively accreting rather than a debris disk. The spectra in the atlas are available at http://archive.stsci.edu/prepds/ttauriatlas.

89 pages, 30 figures, published in ApJ

References in corpus (21)

• Atmospheric Escape from Hot Jupiters
• Protoplanetary Disk Structures in Ophiuchus
• UV excess measures of accretion onto young very low-mass stars and brown dwarfs
• The XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST)
• Photoevaporation of protoplanetary discs I: hydrodynamic models
• Using Stellar Limb-Darkening to Refine the Properties of HD 209458b
• A Spitzer view of protoplanetary disks in the gamma Velorum cluster
• The Palomar/Keck Adaptive Optics Survey of Young Solar Analogs: Evidence for a Universal Companion Mass Function
• The Disk Population of the Chamaeleon I Star-Forming Region
• Magnetic fields and accretion flows on the classical T Tauri star V2129 Oph
• VLBA determination of the distance to nearby star-forming regions I. The distance to T Tauri with 0.4% accuracy
• High-Dispersion Optical Spectra of Nearby Stars Younger Than The Sun
• Hipparcos distances of Ophiuchus and Lupus cloud complexes
• The Origins of Fluorescent H2 Emission From T Tauri~Stars
• X-ray emission from classical T Tauri stars: Accretion shocks and coronae?
• Measuring tiny mass accretion rates onto young brown dwarfs
• HD 98800: A 10-Myr-Old Transition Disk
• How Hot is the Wind from TW Hydrae?
• A Low-Mass H2 Component to the AU Microscopii Circumstellar Disk
• The circumbinary disk of HD 98800 B: Evidence for disk warping
• Trigonometric parallaxes of high velocity halo white dwarf candidates

Cited by in corpus (82)

• Photodissociation and photoionisation of atoms and molecules of astrophysical interest
• X-Shooter spectroscopy of young stellar objects: IV -- Accretion in low-mass stars and sub-stellar objects in Lupus
• Hydrocarbon emission rings in protoplanetary disks induced by dust evolution
• Mass measurements in protoplanetary disks from hydrogen deuteride
• X-shooter spectroscopy of young stellar objects: I - Mass accretion rates of low-mass T Tauri stars in σOrionis
• Measuring turbulent motion in planet-forming disks with ALMA: A detection around DM Tau and non-detections around MWC 480 and V4046 Sgr
• Structure of Herbig AeBe disks at the milliarcsecond scale A statistical survey in the H band using PIONIER-VLTI
• The Impact of Dust Evolution and Photoevaporation on Disk Dispersal
• Planetesimal formation by the streaming instability in a photoevaporating disk
• Mass loss in pre-main sequence stars via coronal mass ejections and implications for angular momentum loss
• VLT-CRIRES Survey of Rovibrational CO Emission from Protoplanetary Disks
• Understanding the origin of the [OI] low-velocity component from T Tauri stars
• A Hubble Space Telescope Survey of H2 Emission in the Circumstellar Environments of Young Stars
• The Atomic and Molecular Content of Disks Around Very Low-mass Stars and Brown Dwarfs
• The bright end of the exo-Zodi luminosity function: Disk evolution and implications for exo-Earth detectability
• A survey of C2H, HCN, and C18O in protoplanetary disks
• Hot Gas Lines in T Tauri Stars
• A circumbinary protoplanetary disc in a polar configuration
• High-resolution Ultraviolet Radiation Fields of Classical T Tauri Stars
• Radiation hydrodynamics simulations of photoevaporation of protoplanetary disks II: Metallicity dependence of UV and X-ray photoevaporation
• Coplanar Circumbinary Debris Disks
• The VLTI / PIONIER near-infrared interferometric survey of southern T Tauri stars. I. First results
• Lyman alpha dominance of the Classical T Tauri FUV Radiation Field
• Low EUV Luminosities Impinging on Protoplanetary Disks
• OH mid-infrared emission as a diagnostic of H${}_2$O UV photodissociation. I. Model and application to the HH 211 shock
• DIGIT survey of far-infrared lines from protoplanetary discs: II. CO
• Multi-epoch Ultraviolet HST Observations of Accreting Low-mass Stars
• X-Shooter spectroscopy of young stellar objects III. Photospheric and chromospheric properties of Class III objects
• HST spectra reveal accretion in MY Lupi
• ALMA Observations of the T Tauri Binary System AS 205: Evidence for Molecular Winds and/or Binary Interactions
• On the Ubiquity and Stellar Luminosity Dependence of Exocometary CO Gas: Detection around M Dwarf TWA 7
• Shockingly low water abundances in Herschel / PACS observations of low-mass protostars in Perseus
• Detections of trans-Neptunian ice in protoplanetary disks
• Shielding by Water and OH in FUV and X-ray Irradiated Protoplanetary Disks
• Radiation hydrodynamics simulations of protoplanetary disks: Stellar mass dependence of the disk photoevaporation rate
• The ODYSSEUS Survey. Motivation and First Results: Accretion, Ejection, and Disk Irradiation of CVSO 109
• Herschel evidence for disk flattening or gas depletion in transitional disks
• Consistent dust and gas models for protoplanetary disks IV. A panchromatic view of protoplanetary disks
• Tracing pebble drift and trapping using radial carbon depletion profiles in protoplanetary disks
• On the Mass Accretion Rates of Herbig Ae/Be Stars. Magnetospheric Accretion or Boundary Layer?
• The GALAH Survey and Symbiotic Stars. I. Discovery and follow-up of 33 candidate accreting-only systems
• A Layered Debris Disk around M Star TWA 7 in Scattered Light
• The TWA 3 Young Triple System: Orbits, Disks, Evolution
• X-ray to NIR emission from AA Tauri during the dim state - Occultation of the inner disk and gas-to-dust ratio of the absorber
• Using Multiwavelength Variability to Explore the Connection between X-ray Emission, the Far-Ultraviolet H2 Bump, and Accretion in T Tauri Stars
• Constraining the gas distribution in the PDS 70 disk as a method to assess the effect of planet-disk interactions
• Structure and Dynamics of the Accretion Process and Wind in TW Hya
• A GALEX based search for the sparse young stellar population in the Taurus-Aurigae star forming region
• FUV Irradiated Disk Atmospheres: Ly$\alpha$ and the Origin of Hot H${}_2$ Emission
• Physics of Planet Trapping with Applications to HL Tau
• Evolution from protoplanetary to debris discs: The transition disc around HD 166191
• Long-lived protoplanetary disks in multiple systems: the VLA view of HD 98800
• FUV Irradiation and the Heat Signature of Accretion in Protoplanetary Disk Atmospheres
• The UV Perspective of Low-Mass Star Formation
• EXORCISM: a spectroscopic survey of young eruptive variables (EXor and candidates)
• [OI] disk emission in the Taurus star forming region
• Photochemical Heating of Dense Molecular Gas
• Probing Protoplanetary Disk Winds with C II Absorption
• Constraints to the magnetospheric properties of T Tauri stars. I. The C II], Fe II] and Si II] ultraviolet features
• Probing UV-Sensitive Pathways for CN and HCN Formation in Protoplanetary Disks with the Hubble Space Telescope
• The warm CO gas along the UV-heated outflow cavity walls: a possible interpretation for the Herschel/PACS CO spectra of embedded YSOs
• HST UV Spectroscopy of the Planet-Hosting T Tauri Star PDS 70
• Constraints to the magnetospheric properties of T Tauri stars - II. The Mg II ultraviolet feature
• Multi-epoch, high spatial resolution observations of multiple T Tauri systems
• The Evolution of Protoplanetary Disks: Probing the Inner Disk of Very Low Accretors
• Observations of PAHs in the atmospheres of discs and exoplanets
• UV Fluorescence Traces Gas and LyA Evolution in Protoplanetary Disks
• Photoevaporation of the Jovian circumplanetary disk I. Explaining the orbit of Callisto and the lack of outer regular satellites
• A PDR model for the FIR mid-$J$ CO ladder with universal rotational temperature in star forming region
• Chemistry During the Gas-rich Stage of Planet Formation
• Nature or nurture of coplanar Tatooines: the aligned circumbinary Kuiper belt analogue around HD 131511
• Evidence of hot high velocity photoionized plasma falling on actively accreting T-Tauri Stars
• MINDS. Strong oxygen depletion in the inner regions of a very low-mass star disk?
• Investigating the origin of hot gas lines in Herbig Ae/Be Stars
• Possible progression of mass flow processes around young intermediate-mass stars based on high-resolution near-infrared spectroscopy. I. Taurus
• Chandra Observations of Six Peter Pan Disks: Diversity of X-ray-driven Internal Photoevaporation Rates Doesn't Explain Their Rare Longevity
• Detection of coherent low-frequency radio bursts from weak-line TTauri stars
• The Mysterious Affair of the H${}_2$ in AU Mic
• Accretion and inter-cycle variations in the PMS interacting binary AK Sco
• Detection of H${}_2$ in the TWA 7 System: A Probable Circumstellar Origin
• Improving Accretion Diagnostics for Young Stellar Objects with Mid-infrared Hydrogen lines from JWST/MIRI
• Chromospheric Mg I Emission Lines of Pre-Main-Sequence Stars