scholarly journals Mid-infrared interferometry of massive young stellar objects

2008 ◽  
Vol 131 ◽  
pp. 012024 ◽  
Author(s):  
H Linz ◽  
B Stecklum ◽  
R Follert ◽  
Th Henning ◽  
R van Boekel ◽  
...  
Keyword(s):  
Young Stellar Objects ◽  
Stellar Objects ◽  
Mid Infrared ◽  
Infrared Interferometry

scholarly journals Atlas of low-mass young stellar object disks from mid-infrared interferometry

2015 ◽  
Vol 11 (S315) ◽  
Author(s):  
J. Varga ◽  
P. Ábrahám ◽  
Th. Ratzka ◽  
J. Menu ◽  
K. Gabányi ◽  
...  
Keyword(s):  
Circumstellar Disks ◽  
Stellar Object ◽  
Young Stellar Objects ◽  
Stellar Objects ◽  
Mid Infrared ◽  
Young Stellar Object ◽  
Low Mass ◽  
Infrared Interferometry

AbstractWe present our approach of visibility modeling of disks around low-mass (< 2 M⊙) young stellar objects (YSOs). We compiled an atlas based on mid-infrared interferometric observations from the MIDI instrument at the VLTI. We use three different models to fit the data. These models allow us to determine overall sizes (and the extent of the inner gaps) of the modeled circumstellar disks.

scholarly journals Mid-infrared interferometry of massive young stellar objects

2009 ◽  
Vol 505 (2) ◽  
pp. 655-661 ◽  
Author(s):  
H. Linz ◽  
Th. Henning ◽  
M. Feldt ◽  
I. Pascucci ◽  
R. van Boekel ◽  
...  
Keyword(s):  
Young Stellar Objects ◽  
Stellar Objects ◽  
Mid Infrared ◽  
Infrared Interferometry

scholarly journals Mid-infrared interferometry of massive young stellar objects

2010 ◽  
Vol 522 ◽  
pp. A17 ◽  
Author(s):  
R. Follert ◽  
H. Linz ◽  
B. Stecklum ◽  
R. van Boekel ◽  
Th. Henning ◽  
...  
Keyword(s):  
Young Stellar Objects ◽  
Stellar Objects ◽  
Mid Infrared ◽  
Infrared Interferometry

scholarly journals Identification of Class I Methanol Masers with Objects of Near and Mid-Infrared Bands and the Third Version of the Class I Methanol Maser (MMI) Catalog

2012 ◽  
Vol 8 (S287) ◽  
pp. 280-281
Author(s):  
Olga Bayandina ◽  
Irina Val'tts ◽  
Grigorii Larionov
Keyword(s):  
Galactic Plane ◽  
Short Wave ◽  
Class I ◽  
Young Stellar Objects ◽  
Bipolar Outflows ◽  
Stellar Objects ◽  
Mid Infrared ◽  
Dark Clouds ◽  
The Third ◽  
Methanol Masers

AbstractAn identification has been conducted of class I methanol masers with 1) short-wave infrared objects EGO (extended green objects) - tracer bipolar outflow of matter in young stellar objects, and 2) isolated pre-protostellar gas-dust cores of the interstellar medium which are observed in absorption in the mid-infrared in the Galactic plane. It is shown that more than 50% of class I methanol masers are identified with bipolar outflows, considering the EGO as bipolar outflows (as compared with the result of 22% in the first version of the MMI catalog that contains no information about EGO). 99 from 139 class I methanol masers (71%) are identified with SDC. Thus, it seems possible that the MMI can be formed in isolated self-gravitating condensations, which are the silhouette of dark clouds - IRDC and SDC.

Gemini Mid-Infrared Imaging of Massive Young Stellar Objects in NGC 3576

2003 ◽  
Vol 126 (5) ◽  
pp. 2411-2420 ◽  
Author(s):  
C. L. Barbosa ◽  
A. Damineli ◽  
R. D. Blum ◽  
P. S. Conti
Keyword(s):  
Infrared Imaging ◽  
Young Stellar Objects ◽  
Stellar Objects ◽  
Mid Infrared

scholarly journals MID-INFRARED SPECTRAL VARIABILITY ATLAS OF YOUNG STELLAR OBJECTS

2012 ◽  
Vol 201 (2) ◽  
pp. 11 ◽  
Author(s):  
Á. Kóspál ◽  
P. Ábrahám ◽  
J. A. Acosta-Pulido ◽  
C. P. Dullemond ◽  
Th. Henning ◽  
...  
Keyword(s):  
Young Stellar Objects ◽  
Spectral Variability ◽  
Stellar Objects ◽  
Mid Infrared ◽  
Infrared Spectral

scholarly journals Young Stellar Object Variability at IRAC Wavelengths: Clues to Star and Planet Formation

2009 ◽  
Vol 5 (H15) ◽  
pp. 734-734
Author(s):  
John R. Stauffer ◽  
Maria Morales ◽  
Luisa Rebull
Keyword(s):  
Light Curve ◽  
Density Profile ◽  
Hot Spot ◽  
Light Curves ◽  
Young Stellar Objects ◽  
Circumstellar Disk ◽  
Stellar Objects ◽  
Mid Infrared ◽  
Stellar Photosphere ◽  
Disk Plane

In Morales et al. (2009), we have recently investigated the mid-infrared (3.6 to 8.0 micron) variability of young-stellar objects (YSOs) using the IRAC camera on the Spitzer Space Telescope. Specifically, we obtained synoptic photometry of about 70 YSOs in the ~1 Myr old IC1396A globule over a 14 day period. More than half of the YSOs were detectably variable, with amplitudes up to about 0.2 magnitudes. About a third of these objects showed quasi-sinusoidal light curves with apparent periods of typically 5 to 12 days. At least two families of models can explain such light curves: (a) a Class II YSO with a photospheric hot spot which locally heats the inner circumstellar disk which is viewed from slightly above the disk plane, and (b) a YSO with a warped disk or with some other non-axisymmetric inner disk density profile, also seen with a view angle slightly above the disk plane. The two models can both yield light curve shapes and amplitudes similar to what we observe in the mid-infrared, but produce very different light curves at shorter wavelengths dominated by the stellar photosphere. Because we only had IRAC photometry for IC1396A, we were not able to discriminate between the two models for this set of data.

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