WTTS Research at UCM

The chromospheric activity of weak-lined T Tauri stars: simultaneous H and Ca II H & K observations
Poncet A., Montes D., Fernández-Figueroa M.J., Miranda L.F.,
1998, Cool Stars, Stellar Systems, and the Sun, 10th Cambridge Workshop , J.A. Bookbinder & R.A. Donahue (eds.), ASP Conference Series 154, CD-1772
PS_file (full paper) -- Abstract

Simultaneous H, Li I and Ca II H & K observations of bona-fide weak-lined T Tauri stars in Taurus with known rotational period
Montes D., Miranda L.F.
2004, Astronomy & Astrophysics (in preparation)

Chromospheric activity of ROSAT discovered weak-lined T Tauri stars
Montes D., Ramsey L.W.,
1999, in ASP Conf. Ser., 158, p. 302 Solar and Stellar Activity: Similarities and Differences
(meeting dedicated to Brendan Byrne, Armagh 2-4th September 1998) J. Butler and G. Doyle, eds.
PS_file (text & Fig's)

WTTS Links

World of T Tauri Stars (Lee Carkner, Penn State Univ.)

A Star is Born (virtual tour though the life of a young star) (Lee Carkner, Penn State Univ.)

Pre-Main Sequence Stars (Penn State Univ.)

T Tauri Stars "Young Suns" (Eric Mamajek, Univ. Arizona, Astronomy Dept)

Star Formation and Young Stars (Landessternwarte Heidelberg-Königstuhl)

Star Formation Research Group at MPIA

Young Stars (CfA)

Young Stars (P. Hartigan, Rice Univ.)

Young Solar Analogs (E. Gaidos, Caltech)

The detection of extremely strong magnetic fields in young stars (Thüringer Landessternwarte Tautenburg)

European Star Formation Network (ESFON)

The formation and evolution of young stellar clusters European Commission Research Training Network

Catálogos

HBC, Third Catalog of Emission-Line Stars of the Orion Population

(Herbig G.H., Bell K.R.: 1988, Lick Obs. Bull. 1111, 1)

HBC, The Herbig-Bell Catalog (HTML version by Karen Strom) -- Catalog Search Form

HBC, The Herbig-Bell Catalog (HTML version Alan D. Welty)

HBC, The Herbig-Bell Catalog (ftp at CDS) --- Main catalog

PMS Database Pre-Main Sequence (PMS) stars observed near Star Forming Regions (SFRs) -- (Alfredo Tripicchio)

Catalog of Photometry of T Tauri Stars (Wesleyan University Astronomy Dpto.)

Photometric observations of PMS objects, Fernández M., 1995 A&AS..113..473 -- Catalog at CDS

Bolometric temperature and young stars (H. Chen) -- Taurus

Pre-Main Sequence tracks and isochrones

The D'Antona and Mazzitelli Pre-Main Sequence tracks and isochrones (1994, ApJS 90, 861)

• (1997 release and 1998 update)

The Stellar Evolution Group at Grenoble Observatory

• An internet server for pre-main sequence tracks of low- and intermediate-mass stars (Siess, et al. 2000 A&A 358, 593)

Publicaciones

Star Formation Newsletter (Editor: Bo Reipurth)

New weak-line T Tauri stars (X-ray detected)

South of Taurus

• Weak-line T Tauri stars south of Taurus
  Neuhäuser et al. (1995) A&A 299, L13
• Search for young low-mass stars in a ROSAT selected sample south of the Taurus-Auriga molecular clouds
  Magazzu et al. (1997) A&AS 124, 449 -- Tables at CDS
• New proper motions of pre-main sequence stars in Taurus-Auriga
  Frink et al. (1997) A&A 325, 613
• Optical High-Resolution Spectroscopy of ROSAT Detected Late-type Stars South of the Taurus Molecular Clouds
  Neuhäuser et al. (1997) A&A 325, 647
• Binary Search among X-ray Active Stars South of the Taurus Molecular Cloud
  Sterzik et al. (1997) ApJ 114, 1673
• Identification of a complete sample of northern ROSAT All-Sky Survey X-ray sources. VI. K to M-type stars south of Taurus-Auriga
  Zickgraf F.-J. et al. (1998) A&A 339, 457
• Radio emission from RASS sources south of Taurus-Auriga
  A. Magazzù, G. Umana, E.L. Martín (1999) A&A 346, 878
• Spectroscopic binaries in a sample of ROSAT X-ray sources south of the Taurus molecular clouds
  Torres G., Neuhäuser R., Guenther E.W. (2002) AJ 123, 1701

  Taurus

• New weak-line T Tauri stars in Taurus-Auriga
  Wichmann et al. (1996) A&A 312, 439
• Radio Emission from ROSAT Discovered Young Stars in and Around Taurus-Auriga"
  Carkner et al. (1997) ApJ 490, 735
• Newly discovered candidate weak-line T Tauri stars in the surrounding area of the Taurus-Aurigae region
  Li J.Z., Hu J.Y. (1998) A&AS 132, 173
• A study of Li-rich stars discovered by ROSAT in Taurus-Auriga
  Wichmann et al. (2000) A&A 359, 181
• Photometric observations of weak-line T Tauri stars II. WTTS in Taurus-Auriga, Orion and Scorpius OB2-2
  C. Chavarría-K et al. (2000) A&AS 145, 187
• X-ray emission from young stars in Taurus-Auriga-Perseus: Luminosity functions and the rotation-activity-age relation
  B. Stelzer, R. Neuhäuser (2001) A&A 377, 538
• New Low-Mass Members of the Taurus Star-Forming Region
  Luhman K.L., (2003) ApJ, 590, 348
• Proper motion study of the ROSAT selected WTTS candidates around Taurus-Auriga
  Li J.Z., (2005) Ap&SS, 298, 525
• Photometric monitoring of the ROSAT selected weak-line T Tauri stars in the Taurus-Auriga field
  Xing, (2006) ChJAA
• XMM-Newton extended survey of the Taurus molecular cloud (A&A, volume 468-2, June III 2007)
  • New pre-main sequence candidates in the Taurus-Auriga star forming region
    Scelsi, et al., (2007), A&A 468, 405

  L1551 cloud in Taurus

• X-Ray--emitting T Tauri Stars in the L1551 Cloud
  Carkner et al. (1996) ApJ 464, 28

  Orion

• New weak-line T Tauri stars in Orion from the ROSAT all-sky survey
  Alcalá et al. (1996) A&AS 119, 7
• On the nature of the ROSAT X-ray selected weak-line T Tauri stars in Orion
  Alcalá et al. (1998) A&A 330, 1005
• High-resolution spectroscopy of ROSAT low-mass pre-main sequence stars in Orion
  Alcalá et al. (2000) A&A 353, 186
• Photometric observations of weak-line T Tauri stars II. WTTS in Taurus-Auriga, Orion and Scorpius OB2-2
  C. Chavarría-K et al. (2000) A&AS 145, 187
• New low-mass pre-main sequence spectroscopic binaries in Orion
  Covino, et al., (2001), A&A 375, 130

  Lupus

• New weak-line T Tauri stars in Lupus
  Krautter et al. (1997) A&AS 123, 329
• The T Tauri star population in the Lupus star forming region
  Wichmann et al. (1997) A&A 320, 185
• T Tauri stars and the Gould Belt near Lupus
  Wichmann et al. (1997) A&A 326, 211
• High-resolution spectroscopy of ROSAT-discovered WTTSs near Lupus
  Wichmann et al. (1999) MNRAS 307, 909
• 12CO Molecular Cloud Survey and Global Star Formation in Lupus
  Tachihara et al. (2001) PASJ, 53, 1081
• The Lupus Association of Pre-Main-Sequence Stars: Clues to a Star Formation Scattered in Space and in Time
  Makarov (2007) ApJ, 658, 480

  Chamaeleon

• A study of the Chamaeleon star-forming region from the ROSAT All-Sky Survey. I. X-ray observations and optical identifications.
  Alcalá et. al. (1995) A&AS 114, 109
• A study of the Chamaeleon star-forming region from the ROSAT All-Sky Survey. II. The pre-main sequence population.
  Alcalá et. al. (1997) A&A 319, 184
• A study of the Chamaeleon star-forming region from the ROSAT All-Sky Survey. III. High resolution spectroscopic study
  Covino et al. (1997) A&A 328, 187
• A ^13CO (J = 1-0) Search for Small Molecular Clouds toward the Chamaeleon-Musca Dark Cloud Complex
  Mizuno et al. (1998) ApJ, 507, L83
• Medium-resolution optical spectroscopy of young stellar and sub-stellar M-dwarfs in the Cha I dark cloud
  Neuhaeuser & Comeron (1999) A&A 350, 612

  rho Ophiuchi

• Spectroscopic classification of X-ray selected stars in the rho Ophiuchi star-forming region and vicinity
  Martín E.L., et al. (1998) MNRAS 300, 733

  Scorpius Centaurus OB Association (Upper Scorpius subgroup)

• X-ray sources in regions of star formation. 5: The low mass stars of the Upper Scorpius association
  Walter et al. (1994) AJ 107, 692
• Multiplicity among T Tauri stars in OB and T associations. Implications for binary star formation.
  Brandner et al. (1996) A&A 307, 121
• Kunkel et al. (1998)
• Weak and post-T Tauri stars around B-type members of the Scorpius-Centaurus OB association
  Martín E.L., (1998) AJ 115, 351
• An X-ray Study of the PMS Population of the Upper Sco-Cen Association
  Sciortino et al. (1998) A&A 332, 825
• A lithium-survey for pre-main sequence stars in the Upper Scorpius OB association
  Preibisch T., et al. (1998) A&A 333, 619
• Multiplicity of X-ray selected T Tauri Stars in the Scorpius-Centaurus OB Association.
  Köhler et al., (2000) A&A in press
• A Survey for Low-mass Stars and Brown Dwarfs in the Upper-Scorpius OB Association,
  Ardila, Martín, & Basri, 2000, AJ, in press
• Photometric observations of weak-line T Tauri stars II. WTTS in Taurus-Auriga, Orion and Scorpius OB2-2
  C. Chavarría-K et al. (2000) A&AS 145, 187
• Post-T Tauri Stars in the Nearest OB Association
  E.E. Mamajek, M.R. Meyer, J. Liebert, (2002, AJ, 124, 1670)
• Solar-Type Post-T Tauri Stars in the Nearest OB Subgroups
  E.E. Mamajek, (2003, "Open Issues in Local Star Formation and Early Stellar Evolution")

  R CrA dark cloud (Corona Australis)

• Search for young stars among ROSAT All-Sky Survey X-ray sources in and around the R CrA dark cloud
  Neuhäuser et al. (2000) A&A Suppl. 146, 323

  IC 348

• The Young Cluster IC 348
  Herbig G.H. (1998) ApJ 497, 736
• A Variability Study of Pre-Main Sequence Stars in the Extremely Young Cluster IC 348
  Herbst W., et al., 2000, AJ, 120, 349

  Cepheus-Cassiopeia region (Cepheus Flare)

• Search for new T Tauri stars in the Cepheus-Cassiopeia region
  Tachihara, et al., 2005, A&A, 437, 919
• Pre-main sequence stars in the Cepheus flare region
  Kun, et al., 2009, ApJS, 185, 451

  High-Galactic latitude molecular clouds

• New discovery of weak-line T Tauri stars in high-Galactic latitude molecular clouds
  J.Z. Li, J.Y. Hu, and W.P. Chen, 2000, A&A 356, 157
• The IC2118 association: new T Tauri stars in high-latitude molecular clouds
  Kun, et al. 2004, A&A, 418, 89

Weak-line T Tauri stars observed with Spitzer

c2d, "From Molecular Cores to Planet Forming Disks" (Spitzer Legacy Program)

• Legacy observations of wTTs
• The Spitzer c2d Survey of Weak-line T Tauri Stars
  • I: Initial Results (Padgett, et al., 2006, ApJ 645, 1283)
  • II: New Constraints on the Timescale for Planet Building (Cieza, et al.,2007, ApJ in press)

FEPS, "The Formation and Evolution of Planetary Systems" (Spitzer Legacy Program)

• High-Dispersion Optical Spectra of Nearby Stars Younger Than The Sun (White, R.J., Gabor, J M. & Hillenbrand, L.A. 2007, AJ, 133, 2524)

Widespread WTTS, PTTS, ZAMS?

• Dispersed T Tauri Stars and Galactic Star Formation
  Feigelson (1996) ApJ 468, 306
• X-rays Surveys and the Post-T Tauri Problem
  Briceño et al. (1997) AJ 113, 740
• Post--T Tauri Stars: A False Problem
  Palla & Galli (1997) ApJ 476, L35
• On the widespread Weak-Line T-Tauri population detected in the ROSAT All-Sky Survey.
  Favata et al. (1997) A&A 326, 647
• HIPPARCOS results for ROSAT-discovered young stars
  Neuhäuser and Brandner (1998), A&A Letter, 330, L29
• The Evolutionary Status of Activity-selected Solar-type Stars and of T-Tauri stars as Derived from Hipparcos Parallaxes: Evidence for Long-lived T-Tauri Disks?
  Favata et al. (1998) A&A 335, 218
• Hipparcos observations of pre-main-sequence stars
  R. Wichmann, U. Bastian, J. Krautter, I. Jankovics and S. M. Rucinski, (1998) MNRAS 301, L39
• On the evolutionary status of X-ray selected weak-line T Tauri star candidates in Taurus-Auriga
  Martín E.L., Magazzu A., (1999) A&A 342, 173
• Evidence for Turbulent Flow-Driven Star Formation: A Solution to the Post-T Tauri Problem?
  Hartmann L., et al., 1999 AAS Meeting #193 - Austin, Texas, January 1999
• Rapid Formation of Molecular Clouds and Stars in the Solar Neighborhood
  Hartmann L., et al., 2001, ApJ, 562, 852
• A Distributed Population of Low Mass Pre-Main Sequence Stars near the Taurus Molecular Clouds
  Slesnick, et al., 2006, AJ, in press

H emission

• H emission from pre-main sequence stars
  FERNANDEZ, M.; ORTIZ, E.; EIROA, C.; MIRANDA, L.F.
  1995A&AS..114..439
• H emission in pre-main sequence stars. I. An atlas of line profiles
  Bo Reipurth, A. Pedrosa, M.T.V.T. Lago,
  1996A&AS..120..229

Rotation in T Tauri stars

• Rotation in T Tauri stars. I - Observations and immediate analysis
  BOUVIER, J.; BERTOUT, C.; BENZ, W.; MAYOR, M.
  1986A&A...165..110
• Rotation in T Tauri stars. II - Clues for magnetic activity
  BOUVIER, J.
  1990AJ.....99..946
• On Disk Braking of T Tauri Rotation,
  Hartmann L.,
  2002, ApJ 566, L29
• Rotation in Young Stars
  "Stellar Rotation in Young Clusters: The First 4 Million Years",
  Rebull et al. 2004, AJ, 127, 1029

COYOTES (Coordinated Observations of Young ObjecTs from Earthbound Sites)

• COYOTES I : the photometric variability and rotational evolution of T Tauri stars.
  BOUVIER, J.; CABRIT, S.; FERNANDEZ, M.; et al.
  1993A&A...272..176
• COYOTES I. Multisite UBVRI photometry of 24 pre-main-sequence stars of the Taurus-Auriga cloud.
  BOUVIER, J.; CABRIT, S.; FERNANDEZ, M.; et al.
  1993A&AS..101..485 ... Catalog at CDS
• COYOTES II: spot properties and the origin of photometric period variations in T Tauri stars.
  BOUVIER, J.; COVINO, E.; KOVO, O.; et al.
  1995A&A...299...89
• COYOTES III: Observational evidence for a lower limit to the rotational velocities of ZAMS G and K dwarfs
  S. Allain, M. Fernández, E.L. Martín, J. Bouvier
  1996A&A...314..173
• COYOTES IV: the rotational periods of low-mass Post-T Tauri stars in Taurus
  J. Bouvier, Wichmann R., Grankin K. et al.
  1997 A&A 318, 495
• Rotational evolution of pre-main sequence stars in Lupus
  R. Wichmann, J. Bouvier, S. Allain, and J. Krautter
  1998 A&A 330, 521

Quantitative spectroscopic criteria for the classification of pre-main sequence low-mass stars. MARTIN, E.L., 1997A&A...321..492

Pre-main sequence Lithium burning: the quest for a new structural parameter Ventura et al., 1998, A&A 331, 1011

A Search for Very low-mass Pre-Main Sequence stars in Taurus Briceño et al., 1998, AJ 115, 2074

Magnetic braking of T Tauri stars P.J. Armitage and C.J. Clarke (MNRAS, 280, 458, 1996)

Spectroscopic Evidence for Magnetospheric Accretion in Classical T Tauri Stars S. Edwards, P. Hartigan, L. Ghandour and C. Andrulis

The ejection of T Tauri stars from molecular clouds and the fate of circumstellar discs Phil Armitage and Cathie Clarke, 1997, MNRAS 285, 540

Low Mass Star Formation, - from Infall to Outflow - "Herbig-Haro Flows and the Birth of Low Mass Stars", (IAU Symposium No. 182)

Multiplicity of T Tauri Stars

Multiplicity of T Tauri Stars (Rainer Köhler)

Binaries among T Tauri Stars in Taurus-Auriga (Köhler 1996)

Multiplicity of X-ray-selected weak-line T Tauri Stars (Köhler 1996)

Multiplicity of T Tauri Stars in Taurus after ROSAT. (Köhler & Leinert, 1998, A&A 331, 977)

Binary T Tauri stars (Wolfgang Brandner)

Multiplicity among T Tauri stars in OB and T associations. Implications for binary star formation.
(Brandner et al. (1996) A&A 307, 121)

Binary Search among X-ray Active Stars South of the Taurus Molecular Cloud
(Sterzik et al. (1997) ApJ 114, 1673)

Substellar Companions to weak-line T Tauri Stars (Brandner et al.)

The Multiplicity of Pre--Main-Sequence Stars in Southern Star-forming Regions
(Ghez et al. 1997, ApJ 481, 378)

Speckle Imaging Measurements of the Relative Tangential Velocities of the Components of T Tauri Binary Stars
(Ghez et al. 1995 AJ, 110, 753)

High Spatial Resolution Imaging of Pre-Main Sequence Binary Stars: Resolving the Relationship Between Disks and Close Companions
(Ghez et al. 1997, ApJ 490, 353)

RXJ 0529.4+0041: a low mass pre-main sequence eclipsing-spectroscopic binary
(Covino et al., 2000, A&A 361, L49)

HD 34700: A new T Tauri double-lined spectroscopic binary
(A.A. Ferro & S. Giridhar, 2003, A&A, 408, L29)

A double-lined spectroscopic orbit for the young star HD 34700
(Torres G., 2004, AJ, 127, 1187)

No Fossil Disk in the T Tauri Multiple System V773 Tau
(G. Duchene, A. M. Ghez, C. McCabe, A. J. Weinberger, 2003, ApJ, 592, 288)

A fourth component in the young multiple system V773 Tau
(Woitas J., 2003, A&A, 406, 685)

Investigadores

• Lee Carkner (Pennsylvania State University)
• Eric D. Feigelson (Pennsylvania State University)
• Larry Ramsey (Pennsylvania State University)
• Alan Welty (Pennsylvania State University)

• Eric Mamajek (Univ. Arizona Astronomy Dept, Steward Observatory)

• William Herbst (Astronomy Department of Wesleyan University)

• Jérôme Bouvier (CHF) (Obs. Univ. Grenoble) (bouvier@cfht.hawaii.edu)

• Matilde Fernández (MPIA, Max-Planck-Institut fu"r Astronomie) (matilde@mpia-hd.mpg.de)

• R. Wichmann (Landessternwarte Heidelberg-Königstuhl)

• Ralph Neuhäuser (MPI Extraterr. Physik) (rne@hpth03.mpe-garching.mpg.de)

• Wolfgang Brandner (University of Illinois at Urbana-Champaign)

• Andrea Ghez (UCLA)

• Walter Frederick M. (SUNY Stony Brook NY) (fwalter@astro.sunysb.edu)

• Patrick Hartigan (Rice Univ.)

• Natalie Stout-Batalha (Lick Obs, CA)

• Rich Webb (UCLA Div. of Astronomy & Astrophysics)

• Lionel Siess (Laboratoire d'Astrophysique de l'Observatoire de Grenoble (LAOG) and GRAAL)

Ph.D. Theses

• Watching the Stars go `Round and `Round (Scott J. Wolk, 1996, SUNY Stony Brook NY)

• UMASS / Five College, Departmental Ph.D. Theses

• Accretion discs in T Tauri stars and interacting binaries (Philip Armitage, Institute of Astronomy and St John's College, University of Cambridge, 1996)

• Near Infrared Hydrogen Lines as Diagnostic of Accretion and Winds in Young Stellar Objects (Daniel Folha, 1998)

• Kinematics of T Tauri Stars in nearby Star Forming Regions (Sabine Frink, 1999) - Sabine Reffert

Books

• The Origins of Stars and Planetary Systems (Editors C.J. Lada and N.D. Kylafis) Kluwer Academic Press

• Star Formation and the Physics of Young Stars (10th Aussois School on Stellar Physics, 2000, Edited by J. Bouvier & J.-P. Zahn)

Actividad estelar Grupos cinemáticos estelares

David Montes, dmgastrax.fis.ucm.es