Browsing by Subject "H II regions"

Now showing items 1-19 of 19

    • A 50 pc scale view of star formation efficiency across NGC 628 
      Kreckel, K.; Faesi, C.; Kruijssen, J. M. D.; Schruba, A.; Groves, B.; Leroy, A. K.; Bigiel, F.; Blanc Mendiberri, Guillermo; Chevance, M.; Herrera C., Daniel; Hughes, A.; McElroy, R.; Pety, J.; Querejeta, M.; Rosolowsky, E.; Schinnerer, E.; Sun, J.; Usero, A.; Utomo, D. (IOP Publishing, 2018)
      Star formation is a multi-scale process that requires tracing cloud formation and stellar feedback within the local (less than or similar to kpc) and global galaxy environment. We present first results from two large ...
    • Attenuation modified by DIG and dust as seen in M31 
      Tomicic, Neven; Kreckel, Kathryn; Groves, Brent; Schinnerer, Eva; Sandstrom, Karin; Kapala, Maria; Blanc Mendiberri, Guillermo; Leroy, Adam (IOP Publishing Ltd, 2017)
      The spatial distribution of dust in galaxies affects the global attenuation, and hence inferred properties, of galaxies. We trace the spatial distribution of dust in five approximately kiloparsec fields of M31 by comparing ...
    • Characterizing spiral arm and interarm star formation 
      Kreckel, K.; Blanc Mendiberri, Guillermo; Schinnerer, E.; Groves, B.; Adamo, A.; Hughes, A.; Meidt, S. (2016)
      Interarm star formation contributes significantly to a galaxy's star formation budget and provides an opportunity to study stellar birthplaces unperturbed by spiral arm dynamics. Using optical integral field spectroscopy ...
    • A cluster of radio sources near GGD 14 
      Gómez, Y.; Rodríguez, L.F.; Garay Brignardello, Guido (The American Astronomical Society, 2000-03-10)
      We present sensitive Very Large Array (VLA) radio continuum observations at 3.6 cm toward the star-forming region GGD 14 (also known as GGD 12/13/14/15, G213.88-11.84, and AFGL 890). In addition to the previously known ...
    • Distributed star formation throughout the galactic center cloud sgr B2 
      Ginsburg, Adam; Garay Brignardello, Guido (IOP Publishing Ltd, 2018)
      We report ALMA observations with resolution approximate to 0 ''.5 at 3 mm of the extended Sgr B2 cloud in the Central Molecular Zone (CMZ). We detect 271 compact sources, most of which are smaller than 5000 au. By ruling ...
    • Dust Emission at 8 and 24 µm as Diagnostics of H II Region Radiative Transfer 
      Oey, M. S.; López Hernández, J.; Kellar, J. A.; Pellegrini, E. W.; Gordon, K. D.; Jameson, K. E.; Li, A.; Madden, S. C.; Meixner, M.; Roman Duval, Julia; Bot, C.; Rubio López, Mónica; Tielens, A. G. G. M. (IOP Publishing Ltd, 2017)
      We use the Spitzer Surveying the Agents of Galaxy Evolution (SAGE) survey of the Magellanic Clouds to evaluate the relationship between the 8 mu m polycyclic aromatic hydrocarbon (PAH) emission, 24 mu m hot dust emission, ...
    • Eeffect of feedback of massive stars in the fragmentation, distribution, and kinematics of the gas in two ... 
      Rebolledo, David; Guzmán, Andrés; Contreras, Yanett; Garay Brignardello, Guido; Medina, S. N. X.; Sanhueza, Patricio; Green, Anne; Castro, Camila; Guzmán, Viviana; Burton, Michael G. (IOP, 2020)
      We present ALMA high spatial resolution observations toward two star-forming regions located in one of the most extreme zones of star formation in the Galaxy, the Carina Nebula. One region is located at the center of the ...
    • Illuminating a tadpole's metamorphosis II: observing the ongoing transformation with ALMA 
      Reiter, Megan; Guzmán, Andrés E.; Haworth, Thomas J.; Klaassen, Pamela D.; McLeod, Anna F.; Garay Brignardello, Guido; Mottram, Joseph C. (Oxford University Press, 2020)
      We present new Atacama Large Millimeter/submillimeter Array observations of the tadpole, a small globule in the Carina Nebula that hosts the HH 900 jet+outflow system. Our data include (CO)-C-12, (CO)-C-13, (CO)-O-18 J=2-1, ...
    • Infall, outflow, and turbulence in massive star-forming cores in the G333 giant molecular cloud 
      Lo, N.; Wiles, B.; Redman, M.; Cunningham, M.; Bains, I.; Jones, P.; Burton, M.; Bronfman Aguiló, Leonardo (Royal Astronomical Society, 2015)
      We present molecular line imaging observations of three massive molecular outflow sources, G333.6–0.2, G333.1–0.4, and G332.8–0.5, all of which also show evidence for infall, within the G333 giant molecular cloud (GMC). ...
    • Linking stellar populations to H II regions across nearby galaxies I. Constraining pre-supernova feedback ... 
      Barnes, A. T.; Chandar, R.; Kreckel, K.; Glover, S. C. O.; Scheuermann, F.; Belfiore, F.; Bigie, F.; Blanc Mendiberri, Guillermo Alberto; Boquien, M.; Den Brok, J.; Congiu, E.; Chevance, M.; Dale, D. A.; Deger, S.; Kruijssen, J. M. D.; Egorov, O. V.; Eibensteiner, C.; Emsellem, E.; Grasha, K.; Groves, B.; Klessen, R. S.; Hannon, S.; Hassani, H.; Lee, J. C.; Leroy, A. K.; López, L. A.; McLeod, A. F.; Pan, H.; Sánchez Blázquez, P.; Schinnerer, E.; Sormani, M. C.; Thilker, D. A.; Ubeda, L.; Watkins, E. J.; Williams, T. G. (EDP Sciences, 2022)
      Context. Stellar feedback is one of the fundamental factors regulating the evolution of galaxies. However, we still do not have access to strong observational constraints on the relative importance of the di fferent feedback ...
    • Outer-disk reddening and gas-phase metallicities: The CALIFA connection 
      Marino, R.; Gil de Paz, A.; Sánchez, S.; Sánchez Blázquez, P.; Cardiel, N.; Castillo Morales, A.; Pascual, S.; Vilchez, J.; Kehrig, C.; Molla, M.; Méndez Abreu, J.; Catalán Torrecilla, C.; Florido, E.; Pérez, I.; Ruiz Lara, T.; Ellis, S.; López Sánchez, Ángel R.; González Delgado, R. M.; Lorenzo Cáceres, A. de; García Benito, R.; Galbany, Lluis; Zibett, S.; Cortijo, C.; Kalinova, V.; Mast, D.; Iglesias Paramo, J.; Papaderos, P.; Walcher, C.; Bland Hawthorn, J. (EDP SCIENCES, 2016)
      We study, for the first time in a statistically significant and well-defined sample, the relation between the outer-disk ionized-gas metallicity gradients and the presence of breaks in the surface brightness profiles of ...
    • A photodissociated region associated with the compact Hıı region near GGD 12-15 
      Gómez, Y.; Lebrón, M.; Rodríguez, L. F.; Garay Brignardello, Guido; Lizano, S.; Escalante, V.; Cantó, J. (The American Astronomical Society, 1998-08-10)
      We present Very Large Array (VLA) continuum (2, 3.6, and 20 cm) and line (H I 21 cm, C92a, and H92a) observations toward the obscured cometary-like H II region located near the optical nebulosities GGD 12È15. We Ðnd that ...
    • Photoevaporated flows from H II regions 
      Lizano, Susana; Cantó, Jorge; Garay Brignardello, Guido; Hollenbach, David (UNIV CHICAGO PRESS., 1996-09-10)
      We model the dynamics of a fast, isothermal ionized stellar wind loaded with mass injected from photoevaporated globules surrounding the massive star. The effect of the mass injection is to produce a density profile such ...
    • Pillars of creation among destruction: star formation in molecular clouds near R136 in 30 doradus 
      Kalari, Venu M.; Rubio López, Mónica; Elmegreen, Bruce G.; Guzman, Viviana V.; Zinnecker, Hans; Herrera, Cinthya N. (IOP Publishing Ltd, 2018)
      We present new sensitive CO(2-1) observations of the 30 Doradus region in the Large Magellanic Cloud. We identify a chain of three newly discovered molecular clouds that we name KN1, KN2, and KN3 lying within 2-14 pc in ...
    • The molecular environment of the pillar like features in the H II region G46.5–0.2 
      Paron, S.; Celis Peña, M.; Ortega, M. E.; Fariña, C.; Petriella, A.; Rubio López, Mónica; Ashley, R. P. (Oxford University Press, 2017)
      At the interface of H II regions and molecular gas, peculiar structures appear, some of them with pillar-like shapes. Understanding their origin is important for characterizing triggered star formation and the impact of ...
    • Unusual Galactic HiiRegions at the Intersection of the Central Molecular Zone and the Far Dust Lane 
      Anderson, L. D.; Sormani, M. C.; Ginsburg, Adam; Glover, Simon C.O.; Heywood, I.; Rammala, I.; Schuller, F.; Csengeri, T.; Urquhart, J. S.; Bronfman Aguiló, Leonardo (IOP Publishing, 2020)
      Sgr.E is a massive star formation complex found toward the Galactic center that consists of numerous discrete, compact H II regions. It is located at the intersection between the central molecular zone (CMZ) and the far ...
    • Using the local gas-phase oxygen abundances to explore a metallicity dependence in SNe Ia luminosities 
      Moreno Raya, M. E.; López Sánchez, Ángel R.; Molla, M.; Galbany, Lluis (2016)
      We present an analysis of the gas-phase oxygen abundances of a sample of 28 galaxies in the local Universe (z < 0.02) hosting Type Ia supernovae (SNe Ia). The data were obtained with the 4.2 m William Herschel Telescope. ...
    • A view of Large Magellanic Cloud H II regions N159, N132, and N166 through the 345-GHz window 
      Paron, S.; Ortega, M. E.; Fariña, C.; Cunningham, M.; Jones, P. A.; Rubio López, Mónica (Oxford University Press, 2016)
      We present results obtained towards the H II regions N159, N166, and N132 from the emission of several molecular lines in the 345 GHz window. Using Atacama Submillimetre Telescope Experiment, we mapped a 2.4 arcmin x 2.4 ...
    • Vla observations of carbon radio recombination lines toward the H II region complex S88B 
      Garay Brignardello, Guido; Gómez, Yolanda; Lizano, Susana; Brown, Robert L. (1998-07-10)
      We present high angular resolution VLA observations of the C92a, C110a, and C166a radio recombination lines of carbon from the region of massive star formation known as S88B. The observations reveal that the carbon ...