Results 81 to 90 of about 12,408 (264)
A JWST/MIRI and NIRCam Analysis of the Young Stellar Object Population in the Spitzer I Region of NGC 6822
The Astrophysical JournalWe present an imaging survey of the Spitzer I star-forming region in NGC 6822 conducted with the NIRCam and MIRI instruments on board JWST. Located at a distance of 490 kpc, NGC 6822 is the nearest non-interacting low-metallicity (∼0.2 Z _⊙ ) dwarf ...Laura Lenkić, Conor Nally, Olivia C. Jones, Martha L. Boyer, Patrick J. Kavanagh, Nolan Habel, Omnarayani Nayak, Alec S. Hirschauer, Margaret Meixner, B. A. Sargent, Tea Temim +10 moredoaj +1 more sourceThe Sagittarius dwarf irregular galaxy: Metallicity and stellar populations [PDF]
Astronomy & Astrophysics, 2002 10 pages, 7 figures, accepted A& ...Momany, Y., Held, E. V., Saviane, I., Rizzi, L. +3 moreopenaire +2 more sourcesBVR photometry of the resolved dwarf galaxy Ho IX
, 2004 We present BVR CCD photometry down to limiting magnitude B=23.5 mag for 232
starlike objects and 11 diffuse objects in a 5.4' x 5.4' field of Ho IX. The
galaxy is a gas-rich irregular dwarf galaxy possibly very close to M 81, which
makes it especially ...Aparicio, Bertelli, Bomans, Christian, D. J. Bomans, Davidge, Fernie, Fitzpatrick, Flower, Freedman, Georgiev, Georgiev, Georgiev, Georgiev, Georgiev, Georgiev, Georgiev, Georgiev, Georgiev, Heydari-Malayeri, Hill, Hopp, Hopp, Humphreys, Karachentsev, Karachentsev, Makarova, Makarova, Metcalfe, Miller, Notni, Perelmuter, Roberts, Sandage, Sandage, Stetson, Straizys, T. B. Georgiev, Treffers, Vallenari, Yun +40 morecore +1 more sourceA GALEX Ultraviolet Imaging Survey of Galaxies in the Local Volume [PDF]
, 2010 We present results from a GALEX ultraviolet (UV) survey of a complete sample
of 390 galaxies within ~11 Mpc of the Milky Way. The UV data are a key
component of the composite Local Volume Legacy (LVL), an
ultraviolet-to-infrared imaging program designed ...Adelman-McCarthy, Armando Gil de Paz, Benjamin D. Johnson, Bigiel, Blanton, Boselli, Cairós, Christy Tremonti, Côté, Dalcanton, Dale, de Jong, de Vaucouleurs, Eldridge, Evan Skillman, Fumagalli, Gallagher, Gil de Paz, Gil de Paz, Gil de Paz, Gil de Paz, Grebel, Hunter, Hunter, Janice C. Lee, José G. Funes S. J., Julianne Dalcanton, Karachentsev, Karachentsev, Kennicutt, Kennicutt, Knapen, Kroupa, Lee, Lee, Lee, Lee, Liese van Zee, Martin, Matthew Bothwell, Melena, Meurer, Meurer, Meurer, Miller, Morrissey, Morrissey, Pflamm-Altenburg, Popescu, Robert C. Kennicutt, Schiminovich, Schlegel, Shoko Sakai, Skillman, Springob, Thilker, Thilker, Tremonti, Tully, van Zee, Weidner, Weisz, Zaritsky +62 morecore +4 more sourcesThe Karl G. Jansky Very Large Array Local Group L-Band Survey (LGLBS)
The Astrophysical Journal Supplement SeriesWe present the Local Group L -Band Survey, a Karl G. Jansky Very Large Array (VLA) survey producing the highest-quality 21 cm and 1–2 GHz radio continuum images to date, for the six VLA-accessible, star-forming, Local Group galaxies. Leveraging the VLA’s Eric W. Koch, Adam K. Leroy, Erik W. Rosolowsky, Laura Chomiuk, Julianne J. Dalcanton, Nickolas M. Pingel, Sumit K. Sarbadhicary, Snežana Stanimirović, Fabian Walter, Haylee N. Archer, Alberto D. Bolatto, Michael P. Busch, Hongxing Chen, Ryan Chown, Harrisen Corbould, Serena A. Cronin, Jeremy Darling, Thomas Do, Jennifer Donovan Meyer, Cosima Eibensteiner, Deidre Hunter, Rémy Indebetouw, Preshanth Jagannathan, Amanda A. Kepley, Chang-Goo Kim, Shin-Jeong Kim, Timea O. Kovacs, Joshua Marvil, Eric J. Murphy, Claire E. Murray, Jürgen Ott, D.J. Pisano, Mary Putman, Daniel R. Rybarczyk, Julia Roman-Duval, Karin Sandstrom, Eva Schinnerer, Evan D. Skillman, Adam Smercina, Ioana Stelea, Jay Strader, Jiayi Sun, Devisree Tallapaneni, Elizabeth Tarantino, Vicente Villanueva, Daniel R. Weisz, Thomas G. Williams, Tony Wong +47 moredoaj +1 more sourceOxygen abundances in nearby dwarf irregular galaxies
The Astrophysical Journal, 1989 Oxygen abundances are obtained by optical spectrophotometry of H II regions in seven nearby dwarf irregular galaxies. All of these yield oxygen abundances of less than 1/10 of the solar value, and most are in the range of 3-5 percent of the solar value. This suggests that observations of nearby dwarf galaxies may provide an effective means for studying Evan D. Skillman, R. C. Kennicutt, P. W. Hodge +2 moreopenaire +1 more sourceWhat is the (Dark) Matter with Dwarf Galaxies?
, 2010 We present cosmological hydrodynamical simulations of the formation of dwarf
galaxies in a representative sample of haloes extracted from the Millennium-II
Simulation.Aarseth, Adrian Jenkins, Baldry, Belokurov, Benson, Blanton, Bower, Boylan-Kolchin, Bruzual, Bush, Cantalupo, Carrasco, Cecilia Scannapieco, Chapman, Christlein, Cole, Cole, Cole, Conroy, Croton, de Blok, Dejonghe, Dekel, Dekel, Diemand, Dolphin, Efstathiou, Ferrara, Geha, Gnedin, Governato, Guo, Guo, Haardt, Hoeft, Hunter, Jenkins, Katz, Kauffmann, Kennicutt, Kennicutt, Khochfar, Klypin, Koch, Komatsu, Koposov, Koyama, Larson, Li, Mandelbaum, Martin, Mashchenko, McConnachie, McQuinn, Monelli, Moore, Moster, Navarro, Pelupessy, Power, Qi Guo, Quirk, Revaz, Ricotti, Salpeter, Sawala, Scannapieco, Scannapieco, Scannapieco, Scannapieco, Simon, Simon White, Skillman, Somerville, Springel, Springel, Springel, Springel, Staveley-Smith, Stinson, Stinson, Sutherland, Sánchez-Janssen, Thielemann, Till Sawala, Tollerud, Trentham, Valcke, Vale, Viel, Woosley, Yang, Zavala +92 morecore +1 more sourceThe Interstellar Medium in I Zw 18 Seen with JWST/MIRI. II. Warm Molecular Hydrogen and Warm Dust
The Astrophysical JournalWe present JWST/MIRI spectra from the Medium-resolution Spectrometer of I Zw 18, a nearby dwarf galaxy with a metallicity of ∼3% Solar. Here, we investigate warm molecular hydrogen, H _2 , observed in spectra extracted in ∼120 pc apertures centered on ...L. K. Hunt, B. T. Draine, M. G. Navarro, A. Aloisi, R. J. Rickards Vaught, A. Adamo, F. Annibali, D. Calzetti, S. Hernandez, B. L. James, M. Mingozzi, R. Schneider, M. Tosi, B. Brandl, M. G. del Valle-Espinosa, F. Donnan, A. S. Hirschauer, M. Meixner, D. Rigopoulou +18 moredoaj +1 more sourceThick gas discs in faint dwarf galaxies
, 2010 We determine the intrinsic axial ratio distribution of the 'gas' disks of
extremely faint M_B > -14.5 dwarf irregular galaxies. We start with the
measured (beam corrected) distribution of apparent axial ratios in the HI 21cm
images of dwarf irregular ...Ayesha Begum, Begum, Begum, Begum, Begum, Begum, Begum, Begum, Begum, Binggeli, Binney, Binney, Dutta, Fall, Galametz, Haynes, Heidmann, Hubble, Igor D. Karachentsev, Jayaram N. Chengalur, Kaufmann, Lambas, Lucy, Noerdlinger, Roychowdhury, Ryden, Sambit Roychowdhury, Sandage, Shu, Staveley-Smith, Verheijen, Walter +31 morecore +1 more sourceThe Interstellar Medium in I Zw 18 Seen with JWST/MIRI. I. Highly Ionized Gas
The Astrophysical JournalWe present JWST/MIRI spectra from the Medium-Resolution Spectrometer of I Zw 18, a nearby dwarf galaxy with a metallicity of ∼3% solar. Its proximity enables a detailed study of highly ionized gas that can be interpreted in the context of newly ...L. K. Hunt, A. Aloisi, M. G. Navarro, R. J. Rickards Vaught, B. T. Draine, A. Adamo, F. Annibali, D. Calzetti, S. Hernandez, B. L. James, M. Mingozzi, R. Schneider, M. Tosi, B. Brandl, M. G. del Valle-Espinosa, F. Donnan, A. S. Hirschauer, M. Meixner, D. Rigopoulou, C. T. Richardson, J. M. Levanti, A. R. Basu-Zych +21 moredoaj +1 more source
