The peculiar circumstellar environment of NGC 2024 IRS2
نویسندگان
چکیده
منابع مشابه
The peculiar circumstellar environment of NGC 2024 - IRS 2
We re-examine the nature of NGC 2024 IRS2 in light of the recent discovery of the late O-type star, IRS2b, located 5′′ from IRS2. Using L-band spectroscopy, we set a lower limit of AV = 27.0 mag on the visual extinction towards IRS2. Arguments based on the nature of the circumstellar material, favor an AV of 31.5 mag. IRS2 is associated with the UCH region G206.543–16.347 and the infrared sou...
متن کاملThe Peculiar Galaxy NGC 7332
We present a detailed study of the edge-on S0 galaxy NGC 7332. We show that this object lies significantly below the fundamental plane of early-type galaxies. To understand this behaviour, we have carried out observations with the Integral Field Spectrograph SAURON, which give us a detailed view of the internal kinematics and gas and stars in this galaxy.
متن کاملProtoplanetary Disk Masses in the Young Ngc 2024 Cluster
We present the results from a Submillimeter Array survey of the 887 μm continuum emission from the protoplanetary disks around 95 young stars in the young cluster NGC 2024. Emission was detected from 22 infrared sources, with flux densities from ∼5 to 330 mJy; upper limits (at 3σ) for the other 73 sources range from 3 to 24 mJy. For standard assumptions, the corresponding disk masses range from...
متن کاملThe absolute motion of the peculiar cluster NGC 6791 . ⋆
We present improved values of the three components of the absolute space velocity of the open cluster NGC 6791. One HST ACS/WFC field with two-epoch observations provides astrometric measurements of objects in a field containing the cluster center. Identification of 60 background galaxies with sharp nuclei allows us to determine an absolute reference point, and measure the absolute proper motio...
متن کاملThe Nature of the Peculiar Virgo Cluster Galaxies Ngc 4064 and Ngc 4424
Using extensive kinematical and morphological data on two Virgo cluster galaxies undergoing strong nuclear star formation, we show that ram pressure stripping and gravitational interactions can act together on galaxies that have recently fallen into clusters. We present a detailed study of the peculiar HI-deficient Virgo cluster spiral galaxies NGC 4064 and NGC 4424, using CO 1-0 interferometry...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2004
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20031580