Results 1 to 10 of about 774,992 (308)

Masers in star forming regions [PDF]

Proceedings of the International Astronomical Union, 2012
Maser emission plays an important role as a tool in star formation studies. It is widely used for deriving kinematics, as well as the physical conditions of different structures, hidden in the dense environment very close to the young stars, for example ...
Anna Bartkiewicz, Bartkiewicz, Bartkiewicz, Breen, Castangia, De Buizer, Fontani, Furuya, Goddi, Huib Jan van Langevelde, Kalenskii, Kalenskii, Lekht, Marseille, Moscadelli, Moscadelli, Moscadelli, Palau, Pandian, Purcell, Surcis, Surcis, Szymczak, Szymczak, Torstensson, Torstensson, Urquhart, Vlemmings, Vlemmings, Voronkov, Wu   +30 more
core   +4 more sources

The Lifetimes of Phases in High-Mass Star-Forming Regions [PDF]

2017ApJ, 835, 263B, 2017
High-mass stars form within star clusters from dense, molecular regions, but is the process of cluster formation slow and hydrostatic or quick and dynamic? We link the physical properties of high-mass star-forming regions with their evolutionary stage in a systematic way, using Herschel and Spitzer data.
Bally, John, Battersby, Cara, Svoboda, Brian   +2 more
arxiv   +3 more sources

Dynamical evolution of star forming regions [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
We model the dynamical evolution of star forming regions with a wide range of initial properties. We follow the evolution of the regions' substructure using the Q-parameter, we search for dynamical mass segregation using the Lambda_MSR technique, and we also quantify the evolution of local density around stars as a function of mass using the Sigma_LDR ...
Richard J. Parker, Nicholas J. Wright, Michael Meyer, Simon P. Goodwin   +3 more
arxiv   +7 more sources

Origin of optically passive spiral galaxies with dusty star-forming regions: Outside-in truncation of star formation? [PDF]

, 2010
Recent observations have revealed that red, optically--passive spiral galaxies with little or no optical emission lines, harbour significant amounts of dust-obscured star formation. We propose that these observational results can be explained if the spatial distributions of the cold gas and star-forming regions in these spiral galaxies are ...
Abadi, Bekki, Bekki, Bekki, Bekki, Bekki, Couch, Couch, Dressler, Dwek, Evans, Friel, Gallazzi, Goto, Kenji Bekki, Koopmann, Kronberger, Masters, Meurer, Moran, Navarro, Noguchi, Poggianti, Schmidt, Shioya, Shioya, Spitzer, Sugimoto, Warrick J. Couch, Wilman, Wolf, Wolf, Yamauchi   +32 more
arxiv   +3 more sources

Seeing Star Formation Regions with Gravitational Microlensing [PDF]

Astrophys.J. 643 (2006) 260-265, 2006
We qualitatively study the effects of gravitational microlensing on our view of unresolved extragalactic star formation regions. Using a general gravitational microlensing configuration, we perform a number of simulations that reveal that specific imprints of the star forming region are imprinted, both photometrically and spectroscopically, upon ...
Geraint F. Lewis, Kayser R., Lewis G. F., Rodrigo Gil‐Merino, Schneider P., Warren S. J.   +5 more
arxiv   +4 more sources

Age spreads in star forming regions? [PDF]

Proceedings of the International Astronomical Union, 2008
Rotation periods and projected equatorial velocities of pre-main-sequence (PMS) stars in star forming regions can be combined to give projected stellar radii. Assuming random axial orientation, a Monte-Carlo model is used to illustrate that distributions
D'Antona, Herbst, Hillenbrand, Lamm, R. D. Jeffries, Siess   +5 more
core   +4 more sources

Different Influence of Gas Accretion on the Evolution of Star-forming and Non-star-forming Galaxies [PDF]

The Astrophysical Journal
Using integral field spectroscopic data from the Mapping Nearby Galaxies at Apache Point Observatory survey, we investigate the spatially resolved properties and empirical relations of a star-forming galaxy and a non-star-forming galaxy hosting ...
Min Bao, Wenlong Zhao, Qirong Yuan
doaj   +2 more sources

Star Forming Regions in Cepheus [PDF]

arXiv, 2008
The northern Milky Way in the constellation of Cepheus (100 deg < l < 120 deg; 0 deg < b < 20 deg) contains several star forming regions. The molecular clouds of the Cepheus Flare region at b > 10 deg, are sites of low and intermediate mass star formation located between 200 and 450 pc from the Sun.
Kun, M., Kiss, Z. T., Balog, Z.
arxiv   +3 more sources

Are There Age Spreads in Star Forming Regions? [PDF]

, 2011
A luminosity spread at a given effective temperature is ubiquitously seen in the Hertzsprung-Russell (HR) diagrams of young star forming regions and often interpreted in terms of a prolonged period (>=10 Myr) of star formation. I review the evidence that
B Burningham, BG Elmegreen, C Bertout, CA Tout, CL Slesnick, EI Vorobyov, F Palla, F Palla, F Palla, G Beccari, G Sacco, I Baraffe, I Baraffe, J Hernández, J Pflamm-Altenburg, JA Mercer-Smith, K Haisch Jr, K Tassis, L Cieza, L Hartmann, L Siess, LA Hillenbrand, LM Rebull, LM Rebull, LW Hartmann, ML Enoch, N Calvet, N Rio Da, N Rio Da, RD Jeffries, RD Jeffries, SP Littlefair, T Naylor   +32 more
core   +4 more sources

Investigating the Impact of Metallicity on Star Formation in the Outer Galaxy. I. VLT/KMOS Survey of Young Stellar Objects in Canis Major

The Astrophysical Journal Supplement Series, 2023
The effects of metallicity on the evolution of protoplanetary disks may be studied in the outer Galaxy where the metallicity is lower than in the solar neighborhood.
Dominika Itrich, Agata Karska, Marta Sewiło, Lars E. Kristensen, Gregory J. Herczeg, Suzanne Ramsay, William J. Fischer, Benoît Tabone, Will R. M. Rocha, Maciej Koprowski, Ngân Lê, Beata Deka-Szymankiewicz   +11 more
doaj   +1 more source