Publications (26)
The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds. XI. Lupus Observed With IRAC and MIPS
Bruno Merin, Jes Jorgensen, Loredana Spezzi +7
We present c2d Spitzer/IRAC observations of the Lupus I, III and IV dark clouds and discuss them in combination with optical and near-infrared and c2d MIPS data. With the Spitzer d…
The Nature of Transition Circumstellar Disks III. Perseus, Taurus, and Auriga
Lucas A. Cieza, Matthias R. Schreiber, Gisela A. Romero +3
As part of an ongoing program aiming to characterize a large number of Spitzer-selected transition disks (disks with reduced levels of near-IR and/or mid- IR excess emission), we h…
A Herschel view of IC 1396 A: Unveiling the different sequences of star formation
Aurora Sicilia-Aguilar, Veronica Roccatagliata, Konstantin Getman +5
The IC1396A globule in the young cluster Tr37, hosting many young stars and protostars, is assumed to be a site of triggered star formation. We mapped IC1396A with Herschel/PACS at…
The Spitzer c2d Survey of Large, Nearby, Interstellar Clouds.X. The Chamaeleon II Pre-Main Sequence Population as Observed With IRAC and MIPS
Juan M. Alcala', Loredana Spezzi, Nicholas Chapman +9
We discuss the results from the combined IRAC and MIPS c2d Spitzer Legacy survey observations and complementary optical and near infrared data of the Chamaeleon II (Cha II) dark cl…
ESASky : A Science-Driven Discovery Portal for Space-Based Astronomy Missions
Fabrizio Giordano, Elena Racero, Henrik Norman +16
In the era of "big data" and with the advent of web 2.0 technologies, ESASky (http://sky.esa.int) aims at providing a modern and visual way to access astronomical science-ready dat…
The Luminosities of Protostars in the Spitzer c2d and Gould Belt Legacy Clouds
Michael M. Dunham, Hector G. Arce, Lori E. Allen +14
Motivated by the long-standing "luminosity problem" in low-mass star formation whereby protostars are underluminous compared to theoretical expectations, we identify 230 protostars…
Coordinating observations among ground and space-based telescopes in the multi-messenger era
Erik Kuulkers, Matthias Ehle, Carlos Gabriel +9
The emergence of time-domain multi-messenger (astro)physics requires for new, improved ways of interchanging scheduling information, in order to allow more efficient collaborations…
The Spitzer c2d Survey of Large, Nearby, Insterstellar Clouds. IX. The Serpens YSO Population As Observed With IRAC and MIPS
Paul Harvey, Bruno Merin, Tracy L. Huard +4
We discuss the results from the combined IRAC and MIPS c2d Spitzer Legacy observations of the Serpens star-forming region. In particular we present a set of criteria for isolating…
The Spitzer Survey of Interstellar Clouds in the Gould Belt. III. A Multi-Wavelength View of Corona Australis
Dawn E. Peterson, Alessio Caratti o Garatti, Tyler L. Bourke +14
We present Spitzer Space Telescope IRAC and MIPS observations of a 0.85 deg^2 field including the Corona Australis (CrA) star-forming region. At a distance of 130 pc, CrA is one of…
The Spitzer c2d Survey of Weak-line T Tauri Stars II: New Constraints on the Timescale for Planet Building
Lucas Cieza, Deborah L. Padgett, Karl R. Stapelfeldt +18
One of the central goals of the Spitzer Legacy Project ``From Molecular Cores to Planet-forming Disks'' (c2d) is to determine the frequency of remnant circumstellar disks around we…
A Spitzer Survey of Protoplanetary Disk Dust in the Young Serpens Cloud: How do Dust Characteristics Evolve with Time?
Isa Oliveira, Klaus M. Pontoppidan, Bruno Merin +7
We present Spitzer IRS mid-infrared (5-35 micron) spectra of a complete flux-limited sample (> 3 mJy at 8 micron) of young stellar object (YSO) candidates selected on the basis of…
The Physical Structure of Protoplanetary Disks: the Serpens Cluster Compared with Other Regions
Isa Oliveira, Bruno Merin, Klaus M. Pontoppidan +1
Spectral energy distributions are presented for 94 young stars surrounded by disks in the Serpens Molecular Cloud, based on photometry and Spitzer IRS spectra. Taking a distance to…
IRAC Colors of Young Stellar Objects
Lori E. Allen, Nuria Calvet, Paola D'Alessio +8
We compare the infrared colors predicted by theoretical models of protostellar envelopes and protoplanetary disks with initial observations of young stellar objects made with the I…
WWW Database of Models of Accretion Disks Irradiated by The Central Star
Paola D'Alessio, Bruno Merin, Nuria Calvet +2
We announce the release of a catalog of physical models of irradiated accretion disks around young stars based on the modelling techniques by D'Alessio et al. The WWW catalog inclu…
Ejecta Evolution Following a Planned Impact into an Asteroid: The First Five Weeks
Theodore Kareta, Cristina Thomas, Jian-Yang Li +85
The impact of the DART spacecraft into Dimorphos, moon of the asteroid Didymos, changed Dimorphos' orbit substantially, largely from the ejection of material. We present results fr…
The International Virtual Observatory Alliance in 2019
Mark A. Allen, Patrick Dowler, Janet D. Evans +5
The International Virtual Observatory Alliance (IVOA) held its bi-annual Interoperability Meetings in May 2019, and in October 2019 following the ADASS XXIX conference. We provide…
The (w)hole survey: an unbiased sample study of transition disk candidates based on Spitzer catalogs
Nienke van der Marel, Bart W. Verhaar, Sierk van Terwisga +4
Understanding disk evolution and dissipation is essential for studies of planet formation. Transition disks, i.e., disks with large dust cavities and gaps, are promising candidates…
The Nature of Transition Circumstellar Disks I. The Ophiuchus Molecular Cloud
Lucas A. Cieza, Matthias R. Schreiber, Gisela A. Romero +7
We have obtained millimeter wavelength photometry, high-resolution optical spectroscopy and adaptive optics near-infrared imaging for a sample of 26 Spitzer-selected transition cir…
Optical Characterization of a New Young Stellar Population in the Serpens Molecular Cloud
Isa Oliveira, Bruno Merin, Klaus M. Pontoppidan +6
We report on the results of an optical spectroscopic survey designed to confirm the youth and determine the spectral types among a sample of young stellar object (YSO) candidates i…
Parameters of Herbig Ae/Be and Vega-type stars
Benjamin Montesinos, Carlos Eiroa, Alcione Mora +1
This work presents the determination of the effective temperature, gravity, metallicity, mass, luminosity and age of 27 young early-type stars, most of them in the age range 1-10 M…
A Herschel Search For Cold Dust in Brown Dwarf Disks: First Results
Paul M. Harvey, Thomas Henning, Francois Menard +7
We report initial results from a {\it Herschel} program to search for far-infrared emission from cold dust around a statistically significant sample of young brown dwarfs. The firs…
On the Evolution of Dust Mineralogy, From Protoplanetary Disks to Planetary Systems
Isa Oliveira, Johan Olofsson, Klaus M. Pontoppidan +3
Mineralogical studies of silicate features emitted by dust grains in protoplanetary disks and Solar System bodies can shed light on the progress of planet formation. The significan…
The Spitzer Survey of Interstellar Clouds in the Gould Belt. V. Ophiuchus North Observed with IRAC and MIPS
Jennifer Hatchell, Susan Terebey, Tracy Huard +10
We present Spitzer IRAC (2.1 sq. deg.) and MIPS (6.5 sq. deg.) observations of star formation in the Ophiuchus North molecular clouds. This fragmentary cloud complex lies on the ed…
The Rapid Outbursting Star GM Cep: An EX-or in Tr 37?
Aurora Sicilia-Aguilar, Bruno Merin, Felix Hormuth +9
We present optical, IR and millimeter observations of the solar-type star 13-277, also known as GM Cep, in the 4 Myr-old cluster Tr 37. GM Cep experiences rapid magnitude variation…
The Herschel DIGIT Survey of Weak-line T Tauri Stars: implications for disk evolution and dissipation
Lucas A. Cieza, Johan Olofsson, Paul M. Harvey +8
As part of the "Dust, Ice, and Gas In Time (DIGIT)" Herschel Open Time Key Program, we present Herschel photometry (at 70, 160, 250, 350 and 500 micron) of 31 Weak-Line T Tauri sta…
Herschel Observations of the T Cha Transition Disk: Constraining the Outer Disk Properties
Lucas A. Cieza, Johan Olofsson, Paul M. Harvey +7
T Cha is a nearby (d = 100 pc) transition disk known to have an optically thin gap separating optically thick inner and outer disk components. Huelamo et al. (2011) recently report…