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First Light Science with the GTC
Program and Abstracts
Organizing Committees

LOC – Local Organizing Committee

Chris Packham (co-Chair), University of Florida Rafael Guzman (co-Chair), University of Florida Anthony Gonzalez, University of Florida Vicki Sarajedini, University of Florida Stanley Dermott, University of Florida

SOC – Scientific Organizing Committee

Rafael Guzman (Chair), UF, USA Jose Alberto Lopez, IAUNAM, Mexico Charles Telesco, UF, USA Elizabeth Lada, UF, USA Francisco Garzon, IAC, Spain Francisco Sanchez, IAC, Spain Itziar Aretxaga, INAOE, Mexico Jesus Gallego, UCM, Spain Jesus Gonzalez, IA-UNAM, Mexico Jian Ge, UF, USA Jordi Cepa, IAC, Spain Jose Franco, IA-UNAM, Mexico Jose Guichard, INAOE, Mexico Jose M. R. Espinosa, GTC project office, Spain Luis Colina. IEM-CSIC, Spain Marc Balcells, IAC, Spain Mariano Moles, IAA, Spain Marisa Garcia, GTC project office, Spain Stanley Dermott, UF, USA Steve Eikenberry, UF, USA Xavier Barcons, CSIC, Spain

First Light Science with the GTC

Sponsors

First Light Science with the GTC would like to thank these organizations for their support of this meeting.

Research & Graduate Programs

First Light Science with the GTC

General Information

Date:

Main Conference: Wednesday, June 28 - Friday, June 30, 2006 Post Conference Workshops: Saturday, July 1 - Tuesday, July 4, 2006

Site of the Meeting:

The Biltmore Hotel 1200 Anastasia Avenue Coral Gables, FL 33134 Tel: (305) 445-1926 FAX: (305) 913-3159 Web Site: http://www.biltmorehotel.com

Oral Presentations: Merrick & Stoneman Douglas (simulcast) Poster Presentations: Tuttle, Flagler & Deering Lunch: Alhambra

Notice to Speakers:

The speakers are requested to bring their Power Point presentation to the session room 30 minutes before their sessions. A speaker-ready computer will be available for speakers to check their media prior to their presentations. Please check with the registration desk for details.

Notice to Poster Presenters:

Pins will be provided and placed in the poster area. Each poster board is marked with a number referring to the poster number in the program. Posters should be mounted by 8:00am on Wednesday, June 28 and removed by 6:00pm on Friday, June 30. Presenters are requested to be present at their posters during the coffee breaks.

Social Program:

All registered participants and paid companions are invited. Tuesday, June 27, 2006 at 7:00pm Welcome Reception — Alhambra Terrace

Thursday, June 29, 2006 at 6:00pm Alumni Night Reception — Alhambra

Friday, June 30, 2006 at 7:30pm Conference Banquet & Fiesta — Country Club Ballroom

First Light Science with the GTC

General Information

Registration:

Registration includes admission to scientific sessions (oral and posters). It also includes morning and afternoon coffee breaks, the Welcome Reception (Tuesday evening), three complimentary lunches (Wednesday to Friday), the Alumni Night Reception (Thursday evening), and the Conference Banquet & Fiesta (Friday evening).

Registrants will receive a folder containing conference materials, the abstract book and a list of registered participants. .

Late registrations fees:
Regular — $450.00 (US) Accompanying person — $80.00 (US)

Mode of Payment:

Credit Card (Visa, Master Card and American Express): Please specify card number, expiration date, and the name of the card holder.

Personal Check: Must be drawn on a U.S. bank. Cash

Local Information:

For more information about the Coral Gables, Florida area please visit the official travel site for the area at: http://www.citybeautiful.net/CGWeb/visitors.aspx

Internet Access

Internet access will be available for all conference participants at the conference information table.

Hotel Restaurants & Hours:

Palme d’Or: Tuesday - Thursday 6:0 0-10:30pm; Friday & Saturday 6:00-11:30pm 1200 Courtyard Grill: Breakfast 6:30-11:30am; Lunch 11:30am-5:00pm; Dinner 5:00-10:30pm Cascade (poolside): Lunch 11:30am-3:00pm; Light Snack Menu 3:00-5:30pm 19th Hole Sports Bar & Grill: Daily 6:30am-6:00pm

First Light Science with the GTC

The Biltmore Hotel Conference Area Map

Main Hotel

~ Lunch ~ Welcome Reception ~ Alumni Night Reception

~ Simulcast Room ~ Hispanic Alumni
~ General Session
Association Talk

Conference Center

~ Posters
~ Breaks

First Light Science with the GTC

Coral Gables Area Map

First Light Science with the GTC

Scientific Program — Agenda

SCIENTIFIC SESSIONS

Tuesday, June 27, 2006

  • 5:00-7:00pm
  • Check-in/Registration/Information Booth Open

  • 7:00-9:00pm
  • Welcome Reception — Alhambra Terrace

Wednesday, June 28, 2006

  • 7:30am-6:30pm
  • Check-in/Registration/Information Booth Open

  • 8:30-9:00am
  • Welcome – Merrick & Stoneman Douglas (simulcast)

Session I – Merrick & Stoneman Douglas (simulcast) Coffee Break and Poster Viewing – Tuttle/Flagler/Deering/Bowman
9:00-10:30am 10:30-11:00am 11:00am-12:30pm Session II – Merrick & Stoneman Douglas (simulcast) 12:30-2:30pm 2:30-4:00pm 4:00-4:30pm 4:30-6:00pm
Lunch – Alhambra Session III – Merrick & Stoneman Douglas (simulcast) Coffee Break and Poster Viewing – Tuttle/Flagler/Deering/Bowman Session IV – Merrick & Stoneman Douglas (simulcast)

Thursday, June 29, 2006

8:00am-6:30pm 8:30-10:20am 10:20-11:00am
Check-in/Registration/Information Booth Open Session V – Merrick & Stoneman Douglas (simulcast) Coffee Break and Poster Viewing – Tuttle/Flagler/Deering/Bowman
11:00am-12:30pm Session VI – Merrick & Stoneman Douglas (simulcast) 12:30-2:30pm 2:30-4:30pm 4:30-6:00pm 6:00-8:00pm
Lunch – Alhambra Session VII – Merrick Hispanic Alumni Association Talk – Members Only – Stoneman Douglas “Gran Telescopio Canarias: A Partnership for Discovery” Reception with high dignitaries from Spain, Mexico and the United States – Alhambra

First Light Science with the GTC

Scientific Program — Agenda

Friday, June 30, 2006

8:00am-6:30pm 8:30-10:20am 10:20-11:00am
Check-in/Registration/Information Booth Open Session VIII – Merrick & Stoneman Douglas (simulcast) Coffee Break and Poster Viewing – Tuttle/Flagler/Deering/Bowman
11:00am-12:30pm Session IX – Merrick & Stoneman Douglas (simulcast) 12:30-2:30pm 2:30-4:00pm 4:00-4:30pm 4:30-6:00pm 6:00-6:10pm 8:30pm-Late
Lunch – Alhambra Session X – Merrick & Stoneman Douglas (simulcast) Coffee Break and Poster Viewing – Tuttle/Flagler/Deering/Bowman Session XI – Merrick & Stoneman Douglas (simulcast) Closing Remarks – Merrick & Stoneman Douglas (simulcast) Conference Dinner/Fiesta – Country Club Ballroom

Saturday, July 1, 2006 – Post Conference Workshops

FRIDA Workshop – Alberto Lopez CANARICAM Workshop 1 – Chris Packham CANARICAM Workshop 2 – Charlie Telesco OSIRIS Workshop – Jordi Cepa

Sunday, July 2, 2006 – Post Conference Workshops

EMIR Workshop – Francisco Garzon ELMER Workshop – Marisa Garcia NAHUAL Workshop – Eduardo Martin

Monday & Tuesday, July 3 & 4, 2006 – Post Conference Workshops

  • 9:00am-6:00pm
  • GOYA Workshop – Marc Balcells

First Light Science with the GTC

Scientific Program — Oral Sessions

SCIENTIFIC SESSIONS

Wednesday, June 29

  • 8:30 - 8:40am
  • Rafael Guzman

Welcome

  • 8:40 - 9:00am
  • Jose Miguel Rodriguez

The GTC: getting ready for First Light

SESSION I

  • 9:00 - 9:30am
  • Charles Telesco

Invited Talk

  • 9:30 - 9:50am
  • Marisa Garcia

Elmer performance: results of laboratory tests

9:50 - 10:10am 10:10 - 10:30am 10:30 - 11:00am
Jordi Cepa

OSIRIS assembly and integration

Chris Packham

CanariCam: status and science prospects

Coffee Break and Poster Viewing
SESSION II

  • 11:00 - 11:30am
  • Artemio Herrero

Invited Talk

  • 11:30 - 11:50am
  • Francisco Garzon

EMIR, the GTC NIR imager spectrograph

11:50am - 12:10pm Alberto Lopez

FRIDA: the science instrument for the GTC adaptive optics system

  • 12:10 - 12:30pm
  • Michelle Edwards

CIRCE: the Canarias infrared camera experiment

  • 12:30 - 2:30pm
  • Lunch (Alhambra)

SESSION III

  • 2:30 - 3:00pm
  • Jesus Gonzalez

Invited Talk

3:00 - 3:20pm 3:20 - 3:40pm 3:40 - 4:00pm 4:00 - 4:30pm
Charo Villamariz

How to observe with GTC

Antonio Cabrera

The GCS data processing kit

James Hough

New opportunities for polarization with CanariCam

Coffee Break and Poster Viewing

Scientific Program — Oral Sessions

SESSION IV

  • 4:30 - 5:00pm
  • Jian Ge

Invited Talk

5:00 - 5:20pm 5:20 - 5:40pm 5:40 - 6:00pm
David Barrado

The Lambda Orions star forming region: the Spitzer perspective

Eduardo Martin

Brown dwarf candidates ready for GTC follow-up

Maria Morales

A sensitive search for variability in late L dwarfs

Thursday, June 29

SESSION V

  • 8:30 - 9:00am
  • Elizabeth Lada

Invited Talk

9:00 - 9:20am 9:20 - 9:40am 9:40 - 10:00am 10:00 - 10:20am 10:20 - 11:00am
Rafael Rebolo

Chemical composition of black hole and neutron star companions

Ata Sarajedini

Local group stellar populations with the GTC

Antonio Marin-Franch

Surface-brightness fluctuations in stellar populations

Reba Bandyopadhyay

Determining the nature of the faint X-ray source population near GC

Coffee Break and Poster Viewing
SESSION VI

  • 11:00 - 11:30am
  • Emilio Alfaro

Invited Talk

  • 11:30 - 11:50am
  • Peter Hammersley

EMIR spectroscopic survey of the inner galaxy

11:50am - 12:10pm Jonathan C. Tan

Star formation near supermassive black holes

  • 12:10 - 12:30pm
  • Elizabeth Tasker

Building a virtual Milky Way

  • 12:30 - 2:30pm
  • Lunch and Poster Viewing (Alhambra)

SESSION VII

  • 2:30 - 3:00pm
  • Manuel Peimbert

Invited Talk

  • 3:00 - 3:20pm
  • Rosa Gonzalez

The warm interstellar gas in starbursts and AGNs

Scientific Program — Oral Sessions

3:20 - 3:40pm 3:40 - 4:10pm 4:10 - 4:30pm
Miriam Pena

Deep spectroscopy of planetary nebulae and compact HII regions

Almudena Alonso

Invited Talk

Tanio Diaz-Santos

T-ReCS mid-infrared observations of local LIRGs

Friday, June 30

SESSION VIII

  • 8:30 - 9:00am
  • Meg Urry

Invited Talk

9:00 - 9:20am 9:20 - 9:40am 9:40 - 10:00am 10:00 - 10:20am 10:20 - 11:00am
Jorge P. Gallego

3D spectroscopy of luminous blue compact galaxies

Juha Reunanen

VLT/SINFONI spectroscopy of nearby galaxies

Ana Matkovic

Faber-Jackson relation for dE/ds0 galaxies

David Clark

X-ray source environments in the dwarf starburst galaxy NGC1569

Coffee Break and Poster Viewing
SESSION IX

  • 11:00 - 11:30am
  • Stephen Eikenberry

Invited Talk

  • 11:30 - 11:50am
  • Xavier Barcons

Obscured and unobscured growth of supermassive black holes

11:50am - 12:10pm Patrick Roche

Spatially-resolved mid-IR spectroscopy of nearby galaxy nuclei

  • 12:10 - 12:30pm
  • Nicolas Gruel

Simulations of GTC/FRIDA observations of high-redshift galaxies

  • 12:30 - 2:30pm
  • Lunch (Alhambra)

Scientific Program — Oral Sessions

SESSION X

  • 2:30 - 3:00pm
  • David Koo

Invited Talk

3:00 - 3:20pm 3:20 - 3:40pm 3:40 - 4:00pm 4:00 - 4:30pm
Anthony Gonzalez

Galaxy evolution during the epoch of cluster assembly

Marc Balcells

The formation epoch of ellipticals and red-sequence galaxies

Luc Binette

Large scale absorbers in the environment of high-z RGs

Coffee Break and Poster Viewing
SESSION XI

  • 4:30 - 5:00pm
  • Roberto Terlevich

Invited Talk

5:00 - 5:20pm 5:20 - 5:40pm 5:40 - 6:00pm 6:00 - 6:10pm
Roser Pello

Galaxies at z>7: probing galaxy formation with new NIRMOS

Hsiao-Wen Chen

Chemical enrichment of the IGM and ISM in the distant universe

Mike Gladders

Galaxy clusters, cosmology, and magellan instrumentation

Stan Dermott

Closing Remarks

Scientific Program — Posters

SCIENTIFIC SESSIONS Poster Board #

(1)

(2) (3) (4) (5) (6) (7) (8) (9)
Abel Bernal

A high resolution scanning Fabry-Perot for OSIRIS

Beatriz Sanchez

FRIDA management plan

Esperanza Carrasco

Manufacturing of FRODOSPEC red arm optics and mounts

Francisco Cobos D.

Expected OSIRIS efficiency

Francisco Reyes

Faculty support

Javier Fuentes

FRIDA system architecture

Jesus Gonzalez

OSIRIS camera barrel

Luis J. Corral

Elmer’s web pages

Mamadou N’Diaye

Exploring high contrast resolution imaging for FRIDA

(10) Marc Vallbe Mumbru

The commissioning of EMIR

(11) Maria Alejandra Di Cesare

Alteration in hypothalamic NPY in CCK2 receptor knockout mice

(12) S. Nicholas Raines

FISICA: the Florida image slicer for infrared astrophysics and cosmology

(13) Salvador Carlos Cuevas Cardona

FRIDA optical design

(14) Sergio Pascual

Data reduction pipeline for EMIR, the Near-IR multi-object spectrograph for GTC

(15) Amelia Bayo

Dust settling: the luminosity function gap at M7-M8

(16) Ashley Expy

Origin of the particles of the Zodiacal cloud

(17) Audra K. Hernandez

H-band spectral classification of intermediate-type stars

(18) Benjamin Montesinos

Metal abundances of stars with protoplanetary disks

Scientific Program — Poster Presentations

(19) Bruno Ferreira

Probing the structure of nearby embedded clusters

(20) Curtis DeWitt

Simulating the Doppler velocity precision of high resolution near infrared spectrographs

(21) Cynthia Gomez Martin

Low-mass stars and Brown dwarfs in NGC1333

(22) Herve Bouy

VLT/VISIR mid-IR observations of Brown dwarfs, future prospects with GTC/Canaricam

(23) James De Buizer

New results from observations of massive star formation in th emid-infrared with the large aperture telescopes

(24) Julian van Eyken

New results from the multi-object Keck Exoplanet Tracker

(25) Justin Crepp

High-contrast imaging with the Hale 200” telescope at Palomar

(26) Margaret Moerchen

Self-regulation of agonist activity at the Y receptors

(27) Mari Cruz Galvez

High resolution spectroscopy of planet bearing stars

(28) Naibi Marinas

High-resolution mid-IR imaging of herbig Ae/Be stars: morphology of the circumstellar dust

(29) Noah Rashking

FLAMINGOS spectroscopy of low mass stars and Brown dwarfs in Orion

(30) Nuria Huelamo

Differential imaging adaptive optics observations of the protostar Elias 2-29

(31) Thomas J. J. Kehoe

Stochastic collisional events in debris disks: what can be learned from the Zodiacal cloud?

(32) David Martinez-Delgado

Tracing tidal streams with GTC: testing the hierarchical formation of the Milky Way

(33) Jordi Cepa

The OTELO project: stellar component in the Groth field

(34) Miriam Garcia Garcia

VLT spectroscopy of massive stars in NGC5

(35) Norberto Castro Rodriguez

VLT spectroscopy of massive stars in NGC5

(36) R. Scott Fisher

Studying the wake of the galactic center source IRS8

Scientific Program — Poster Presentations

(37) Susana Iglesias-Groth

Searching with GTC for the carrier of the Anomalous Microwave Emission

(38) Valerie Mikles

First infrared spectroscopic identification of a chandra low-luminosity X-ray source in the galactic center

(39) Aaron Grocholski

Calcium II triplet abundances for a sample of LMC clusters

(40) Eric Perlman

The mid-infrared emission of M87

(41) Igor Drozdovsky

The stellar structures around disk galaxies

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  • An ALMA Survey of $\Lambda $ Orionis Disks: from Supernovae to Planet

    An ALMA Survey of $\Lambda $ Orionis Disks: from Supernovae to Planet

    Draft version October 2, 2020 Typeset using LATEX twocolumn style in AASTeX63 An ALMA survey of λ Orionis disks: from supernovae to planet formation Megan Ansdell,1, 2 Thomas J. Haworth,3 Jonathan P. Williams,4 Stefano Facchini,5 Andrew Winter,6 Carlo F. Manara,5 Alvaro Hacar,7 Eugene Chiang,8 Sierk van Terwisga,9 Nienke van der Marel,10 and Ewine F. van Dishoeck7 1Flatiron Institute, Simons Foundation, 162 Fifth Ave, New York, NY 10010, USA 2NASA Headquarters, 300 E Street SW, Washington, DC 20546, USA 3Astronomy Unit, School of Physics and Astronomy, Queen Mary University of London, London E1 4NS, United Kingdom 4Institute for Astronomy, University of Hawai`i at M¯anoa, Honolulu, HI, USA 5European Southern Observatory, Karl-Schwarzschild-Str. 2, D-85748 Garching bei M¨unchen,Germany 6Astronomisches Rechen-Institut, Zentrum f¨urAstronomie der Universit¨atHeidelberg, M¨onchhofstraße 12-14, 69120 Heidelberg, Germany 7Leiden Observatory, Leiden University, P.O. Box 9513, 2300-RA Leiden, The Netherlands 8Department of Astronomy, University of California at Berkeley, Berkeley, CA 94720, USA 9Max-Planck-Institute for Astronomy, K¨onigstuhl17, 69117 Heidelberg, Germany 10Department of Physics & Astronomy, University of Victoria, Victoria, BC, V8P 1A1, Canada (Accepted 18 Sept. 2020) Submitted to AAS Journals ABSTRACT Protoplanetary disk surveys by the Atacama Large Millimeter/sub-millimeter Array (ALMA) are now probing a range of environmental conditions, from low-mass star-forming regions like Lupus to massive OB clusters like σ Orionis. Here we conduct an ALMA survey of protoplanetary disks in λ Orionis, a ∼5 Myr old OB cluster in Orion, with dust mass sensitivities comparable to the surveys of nearby regions (∼0.4 M⊕).
  • Download This Article in PDF Format

    Download This Article in PDF Format

    A&A 612, A79 (2018) Astronomy https://doi.org/10.1051/0004-6361/201527938 & © ESO 2018 Astrophysics Early phases in the stellar and substellar formation and evolution Infrared and submillimeter data in the Barnard 30 dark cloud? D. Barrado1, I. de Gregorio Monsalvo2,3, N. Huélamo1, M. Morales-Calderón1, A. Bayo4,5, A. Palau6, M. T. Ruiz7, P. Rivière-Marichalar8, H. Bouy1, Ó. Morata9, J. R. Stauffer10, C. Eiroa11,12, and A. Noriega-Crespo13 1 Depto. Astrofísica, Centro de Astrobiología (INTA-CSIC), ESAC Campus, Camino Bajo del Castillo s/n, 28692 Villanueva de la Cañada, Spain e-mail: [email protected] 2 European Southern Observatory, Alonso de Córdova 3107, Vitacura, Santiago, Chile 3 Joint ALMA Observatory, Alonso de Córdova 3107, Vitacura, Santiago, Chile 4 Instituto de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Av. Gran Bretaña 1111, Valparaíso, Chile 5 Millennium Nucleus “Núcleo Planet Formation”, Universidad de Valparaíso, Chile 6 Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, P.O. Box 3-72, 58090 Morelia, Michoacán, Mexico 7 Depto. de Astronomía, Universidad de Chile, Camino del Observatorio 1515, Santiago, Chile 8 European Space Astronomy Centre (ESA), Camino Bajo del Castillo s/n, 28692 Villanueva de la Cañada, Madrid, Spain 9 Institute of Astronomy and Astrophysics, Academia Sinica, 11F of AS/NTU Astronomy-Mathematics Building, No. 1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan 10 Spitzer Science Center, California Institute of Technology, Pasadena, CA 91125, USA 11 Depto. Física Teórica, Fac. de Ciencias, Universidad Autónoma de Madrid, Campus Cantoblanco, 28049 Madrid, Spain 12 Unidad Asociada UAM-CAB/CSIC, Madrid, Spain 13 Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218, USA Received 9 December 2015 / Accepted 11 November 2017 ABSTRACT Aims.
  • ALMA Observations of the Early Stages of Substellar Formation in the Lupus 1 and 3 Molecular Clouds

    ALMA Observations of the Early Stages of Substellar Formation in the Lupus 1 and 3 Molecular Clouds

    Astronomy & Astrophysics manuscript no. protolupus_v4 ©ESO 2020 December 9, 2020 ALMA observations of the early stages of substellar formation in the Lupus 1 and 3 molecular clouds A. Santamaría-Miranda1; 2; 3, I. de Gregorio-Monsalvo1, A.L. Plunkett4, N. Huélamo5, C. López6, Á. Ribas1, M.R. Schreiber7; 3, K. Mužic´8, A. Palau9, L.B.G. Knee10, A. Bayo2; 3, F. Comerón11, and A. Hales6 1 European Southern Observatory, Av. Alonso de Córdova 3107, Casilla 19001, Santiago, Chile e-mail: [email protected] 2 Instituto de Física y Astronomía, Universidad de Valparaíso, Av. Gran Bretaña 1111, Casilla 5030, Valparaíso, Chile 3 Núcleo Milenio Formación Planetaria - NPF, Valparaíso, Chile 4 National Radio Astronomy Observatory, 520 Edgemont Rd., Charlottesville, VA 22903, U.S.A. 5 Dpto. Astrofísica, Centro de Astrobiología (INTA-CSIC), ESAC Campus, Camino Bajo del Castillo s/n, Urb. Villafranca del Castillo, 28692 Villanueva de la Cañada, Spain 6 Joint ALMA Observatory, Av. Alonso de Córdova 3107, Casilla 19001, Santiago, Chile 7 Departamento de Física, Universidad Técnica Federico Santa María, Av. España 1680, Valparaíso, Chile 8 CENTRA, Faculdade de Ciências, Universidade de Lisboa, Ed. C8, Campo Grande, 1749-016 Lisboa, Portugal 9 Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, P.O. Box 3-72, 58090, Morelia, Mi- choacán, México 10 Herzberg Astronomy and Astrophysics Research Centre, 5071 West Saanich Rd., Victoria, BC, V9E 2E7, Canada 11 European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany Received 14/09/2020 ; accepted 17/11/2020 ABSTRACT Context. The dominant mechanism leading to the formation of brown dwarfs (BDs) remains uncertain.
  • Divisions and Other Regions

    Divisions and Other Regions

    Divisions and Other Regions Regions within the Division One series that are larger than a star system but smaller than a galaxy. Image source: Stephanie Osborn Norma Arm Milky Way Arms, Illustrated Outer Rim Milky Way Arms, Illustrated Orion Molecular Cloud Complex Orion Molecular Cloud Complex, Labeled Orion with the Cloud Complex Galactic Divisions Division One Division Two Division Three Division Four Division Five Division Six Division Seven Division Eight Division Nine Division Ten Division Eleven Division Twelve Division Thirteen Division Fourteen Orion Nebula Norma Arm A minor spiral arm of the Milky Way extending from and around its central hub region. Home of the Ganotians. See https://en.wikipedia.org/wiki/Norma_Arm for more information. Norma Arm Milky Way Arms, Illustrated This artist's concept illustrates the new view of the Milky Way, along with other findings presented at the 212th American Astronomical Society meeting in St. Louis, Mo. The galaxy's two major arms (Scutum-Centaurus and Perseus) can be seen attached to the ends of a thick central bar, while the two now-demoted minor arms (Norma and Sagittarius) are less distinct and located between the major arms. The major arms consist of the highest densities of both young and old stars; the minor arms are primarily filled with gas and pockets of star-forming activity. The artist's concept also includes a new spiral arm, called the "Far-3 kiloparsec arm," discovered via a radio-telescope survey of gas in the Milky Way. This arm is shorter than the two major arms and lies along the bar of the galaxy.
  • The Collinder 69 Cluster in the Context of the Lambda Orionis SFR 3 1

    The Collinder 69 Cluster in the Context of the Lambda Orionis SFR 3 1

    THE COLLINDER 69 CLUSTER IN THE CONTEXT OF THE LAMBDA ORIONIS SFR An Initial Mass Function Down to the Substellar Do- main David Barrado y Navascu´es LAEFF-INTA, Madrid (SPAIN) barrado@laeff.esa.es John R. Stauffer IPAC, California Institute of Technology (USA) stauff[email protected] Jerome Bouvier Laboratoire d’Astrophysique, Observatoire de Grenoble (FRANCE) [email protected] Ray Jayawardhana University of Toronto (CANADA) [email protected] arXiv:astro-ph/0411438v1 16 Nov 2004 Abstract The Lambda Orionis Star Forming Region is a complex structure which includes the Col 69 (Lambda Orionis) cluster and the B30 & B35 dark clouds. We have collected deep optical photometry and spectroscopy in the central cluster of the SFR (Col 69), and combined with 2MASS IR data, in order to derive the Initial Mass Function of the cluster, in the range 50-0.02 M⊙. In addition, we have studied the Hα and lithium equivalent widths, and the optical-infrared photometry, to derive an age (5±2 Myr) for Col 69, and to compare these properties to those of B30 & B35 members. Keywords: The Initial Mas Function – Low Mass Stars and Brown Dwarfs – Lambda Orionis cluster 2 Figure 1. IRAS map at 100 µ of the Lambda Orionis Star Forming Region (contour levels in purple). B stars are displayed as blue four points stars (size related to brightness). Red crosses and green, solid circles represent stars listed in D&M. In the case of the green circles, they have an excess in the Hα emission (see Figure 11). We have labeled the location of several stellar associations and dark clouds.

  • X-Rays and Stellar Populations

    X-rays and stellar populations Francesco Damiani Istituto Nazionale di Astrofisica Osservatorio Astronomico di Palermo X-Rays from Star Forming Regions Palermo, May 19, 2009 Outline Early X-ray observations of clusters: the Einstein Observatory X-ray images of star-forming regions and serendipitous discovery of pre-main-sequence stars with no strong emission lines (WTTS). Emerging trends: younger clusters are X-ray brighter; younger stars are strongly variable in X-rays. ROSAT and the first All-Sky X-ray survey (RASS) in soft X-rays Bright X-ray sources far from star-forming regions as post-T Tauri or runaway T Tauri star candidates? More WTTS candidates in other regions, all nearby. XMM and Chandra: reaching farther away ...and probing a much larger cluster “parameter space”, up to massive SFRs with Chandra. Identifications and follow-ups; X-ray selection efficiency compared to other selection methods. Detection of cluster members over a factor ~ 100 in mass. Some results Cluster morphologies; age spreads and sequences; mass segregation; cluster stellar initial mass function; disk frequency vs. age and environment. Palermo, May 19, 2009 Francesco Damiani Einstein observations of SFR: X-ray images of Tau-Aur, Oph, CrA, Cha I fields (all within 160 pc) yielded detection of tens of known T Tauri stars. A higher-than-elsewhere density of X-ray sources was noted, often identified with uncatalogued stars. Optical follow-ups resulted in finding many tens new PMS stars in each region, showing the same high X-ray activity level as already known “classical” T Tauri Stars (CTTS), but much less (or absent) optical emission lines and IR/UV excesses: these were called weak-line T Tauri stars (WTTS).