Professor Helmut Jerjen

Astronomer/Mathematician
Dipl Math (Univ Basel, 1991), Dr Phil II (Univ Basel, 1995)

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Affiliations

Research interests

Dwarf Galaxies

Dark Matter

Stellar populations in nearby galaxies

Near-field Cosmology

Location

Duffield - Upper - D103

Publications

  • Chiti, A, Frebel, A, Simon, J et al. 2021, 'An extended halo around an ancient dwarf galaxy', Nature Astronomy, vol. 5, pp. 392-400.
  • Marino, A, Milone, A, Renzini, A et al. 2021, 'Spectroscopy and Photometry of the Least Massive Type II Globular Clusters: NGC 1261 and NGC 6934', The Astrophysical Journal, 923, 22
  • Müller, O, Fahrion, K, Rejkuba, M et al. 2021, 'The properties of dwarf spheroidal galaxies in the Cen A group: Stellar populations, internal dynamics, and a heart-shaped HI ring', Astronomy and Astrophysics, vol. 645.
  • Müller, O, Pawlowski, M, Lelli, F et al. 2021, 'The coherent motion of Cen A dwarf satellite galaxies remains a challenge for LCDM cosmology', Astronomy and Astrophysics, 645, L5
  • Chiti, A, Frebel, A, Jerjen, H et al. 2020, 'Stellar Metallicities from SkyMapper Photometry I: A Study of the Tucana II Ultra-faint Dwarf Galaxy', The Astrophysical Journal, vol. 891, no. 1, pp. 1-18.
  • Milone, A, Marino, A, Da Costa, G et al. 2020, 'Multiple populations in globular clusters and their parent galaxies', Monthly Notices of the Royal Astronomical Society, vol. 491, no. 1, pp. 515-531.
  • Cordoni, G, Milone, A, Marino, A et al. 2020, 'Gaia and Hubble Unveil the Kinematics of Stellar Populations in the Type II Globular Clusters Omega Centauri and M22', The Astrophysical Journal, vol. 898, no. 2, p.147.
  • Fahrion, K, Müller, O, Rejkuba, M et al. 2020, 'Metal-poor nuclear star clusters in two dwarf galaxies near Centaurus A suggesting formation from the in-spiraling of globular clusters', Astronomy and Astrophysics, vol. 634, p. 53
  • Müller, O & Jerjen, H 2020, 'The abundance of dwarf galaxies around low-mass spiral galaxies in the Local Volume', Astronomy and Astrophysics, vol. 644, no. A91, p. 7.
  • Joo, S, Kyeong, J, Yang, S et al. 2019, 'RR Lyrae Stars in the Field of Sagittarius II', The Astrophysical Journal, vol. 875, no. 120, pp. 7pp.
  • Marino, A, Milone, A, Sills, A et al. 2019, 'Chemical Abundances along the 1G Sequence of the Chromosome Maps: The Globular Cluster NGC 3201', The Astrophysical Journal, vol. 887, no. 91, pp. 1-17.
  • For, B, Staveley-Smith, L, Westmeier, T et al. 2019, 'WALLABY early science - V. ASKAP H I imaging of the Lyon Group of Galaxies 351', Monthly Notices of the Royal Astronomical Society, vol. 489, no. 4, pp. 5723-5741.
  • Müller, O, Rejkuba, M, Pawlowski, M et al. 2019, 'The dwarf galaxy satellite system of Centaurus A', Astronomy and Astrophysics, vol. 629, pp. 1-20.
  • Conn, B, Jerjen, H, Kim, D et al. 2018, 'On the Nature of Ultra-faint Dwarf Galaxy Candidates. II. The Case of Cetus II', The Astrophysical Journal, vol. 857, no. 70, pp. 9pp.
  • Conn, B, Jerjen, H, Kim, D et al. 2018, 'On the Nature of Ultra-faint Dwarf Galaxy Candidates. I. DES1, Eridanus III, and Tucana V', The Astrophysical Journal, vol. 852, no. 68, pp. 19pp.
  • Chiti, A, Frebel, A, Ji, A et al. 2018, 'Chemical Abundances of New Member Stars in the Tucana II Dwarf Galaxy', The Astrophysical Journal, vol. 857, no. 74, pp. 13pp.
  • Marino, A, Yong, D, Milone, A et al. 2018, 'Metallicity Variations in the Type II Globular Cluster NGC 6934', The Astrophysical Journal, vol. 859, no. 2, pp. 1-20.
  • Joo, S, Kyeong, J, Yang, S et al. 2018, 'RR Lyrae Variables in the Crater II Dwarf Galaxy', The Astrophysical Journal, vol. 861, no. 1, pp. 1-18.
  • Milone, A, Marino, A, Di Criscienzo, M et al. 2018, 'Multiple stellar populations in Magellanic Cloud clusters - VI. A survey of multiple sequences and Be stars in young clusters', Monthly Notices of the Royal Astronomical Society, vol. 477, no. 2, pp. 2640-2663pp.
  • Muller, O, Rejkuba, M & Jerjen, H 2018, 'Distances from the tip of the red giant branch to the dwarf galaxies dw1335-29 and dw1340-30 in the Centaurus group', Astronomy and Astrophysics, vol. 615, p. 10.
  • Chiti, A, Frebel, A, Ji, A et al. 2018, 'Erratum: Chemical Abundances of New Member Stars in the Tucana II Dwarf Galaxy (vol 857, 74, 2018)', The Astrophysical Journal, vol. 860, no. 1, pp. -.
  • Lopez-Sanchez, A, Lagos, C, Young, T et al. 2018, 'The disc-averaged star formation relation for Local Volume dwarf galaxies', Monthly Notices of the Royal Astronomical Society, vol. 480, no. 1, pp. 210-222pp.
  • Muller, O, Jerjen, H & Binggeli, B 2018, 'The Leo-I group: new dwarf galaxy and ultra diffuse galaxy candidates', Astronomy and Astrophysics, vol. 615, pp. 13pp.
  • Chiti, A, Frebel, A, Ji, A et al 2018, 'Chemical Abundances of New Member Stars in the Tucana II Dwarf Galaxy', The Astrophysical Journal, 857, 74 (13pp).
  • Muller, O, Pawlowski, M, Jerjen, H et al 2018, 'A whirling plane of satellite galaxies around Centaurus A challenges cold dark matter cosmology', Science, vol. 359, no. 6375, pp. 534-537pp.
  • Muller, O, Jerjen, H & Binggeli, B 2017, 'New low surface brightness dwarf galaxies in the Centaurus group', Astronomy and Astrophysics, vol. 597, pp. 1-14pp.
  • Muller, O, Scalera, R, Binggeli, B et al. 2017, 'The M 101 group complex: New dwarf galaxy candidates and spatial structure', Astronomy and Astrophysics, vol. 602, pp. A119 (13pp).
  • Marino, A, Milone, A, Yong, D et al. 2017, 'Spectroscopy and Photometry of Multiple Populations along the Asymptotic Giant Branch of NGC 2808 and NGC 6121 (M4)', The Astrophysical Journal, vol. 843, no. 1, pp. 66 (16pp).
  • Milone, A, Marino, A, D'Antona, F et al 2017, 'Multiple stellar populations in Magellanic Cloud clusters - V. The split main sequence of the young cluster NGC 1866', Monthly Notices of the Royal Astronomical Society, vol. 465, no. 4, pp. 4363-4374pp.
  • Myeong, G C, Jerjen, H, Mackey, D, et al., 2017, 'Tidal Tails around the Outer Halo Globular Clusters Eridanus and Palomar 15', Astrophysical Journal Letters, vol. 840, no. 2, L25, 6 pp.
  • Kim, D, Jerjen, H, Mackey, D et al. 2016, 'KIM 3: AN ULTRA-FAINT STAR CLUSTER IN THE CONSTELLATION OF CENTAURUS', The Astrophysical Journal, vol. 820, no. 2, pp. 1-7.
  • Roderick, T, Jerjen, H, Da Costa, G et al. 2016, 'Structural analysis of the Sextans dwarf spheroidal galaxy', Monthly Notices of the Royal Astronomical Society, vol. 460, no. 1, pp. 30-43pp.
  • Roderick, T, Mackey, D, Jerjen, H et al. 2016, 'Extended stellar substructure surrounding the Boötes I dwarf spheroidal galaxy', Monthly Notices of the Royal Astronomical Society, vol. 461, no. 4, pp. 3702-3713.
  • Kim, D, Jerjen, H, Geha, M et al. 2016, 'Portrait of a Dark Horse: a Photometric and Spectroscopic Study of the Ultra-faint Milky Way Satellite Pegasus III', The Astrophysical Journal, vol. 833, no. 1, pp. 9pp.
  • Marino, A, Milone, A, Casagrande, L et al. 2016, 'Chemical abundances in the multiple sub-giant branch of 47 Tucanae: insights on its faint sub-giant branch component', Monthly Notices of the Royal Astronomical Society, vol. 459, no. 1, pp. 610-623.
  • Milone, A, Marino, A, Bedin, L et al. 2016, 'The binary populations of eight globular clusters in the outer halo of the Milky Way', Monthly Notices of the Royal Astronomical Society, vol. 455, no. 3, pp. 3009-3019.
  • Kim, S, Rey, S, Bureau, M et al. 2016, 'LARGE-SCALE FILAMENTARY STRUCTURES AROUND the VIRGO CLUSTER REVISITED', The Astrophysical Journal, vol. 833, no. 2, pp. 8pp.
  • Muller, O, Jerjen, H, Pawlowski, M et al. 2016, 'Testing the two planes of satellites in the Centaurus group', Astronomy and Astrophysics, vol. 595, no. November 2016, pp. 9pp.
  • Milone, A, Marino, A, D'Antona, F et al 2016, 'Multiple stellar populations in Magellanic Cloud clusters. IV. The double main sequence of the young cluster NGC 1755', Monthly Notices of the Royal Astronomical Society, vol. 458, no. 4, pp. 4368-4382
  • Milone, A, Bedin, L, Piotto, G et al. 2015, 'Multiple stellar populations in Magellanic Cloud clusters - III. The first evidence of an extended main sequence turn-off in a young cluster: NGC 1856', Monthly Notices of the Royal Astronomical Society, vol. 450, no. 4, pp. 3750-3764.
  • Pawlowski, M, McGaugh, S & Jerjen, H 2015, 'The new Milky Way satellites: Alignment with the VPOS and predictions for proper motions and velocity dispersions', Monthly Notices of the Royal Astronomical Society, vol. 453, no. 1, pp. 1047-1061.
  • Kim, D & Jerjen, H 2015, 'HOROLOGIUM II: A SECOND ULTRA-FAINT MILKY WAY SATELLITE IN THE HOROLOGIUM CONSTELLATION', Astrophysical Journal Letters, vol. 808, no. 2.
  • Crnojevic, D, Grebel, E, Ferguson, A et al 2015, 'Galaxy evolution through resolved stellar populations in the nearby Centaurus A group', Memorie Della Societa Astronomica Italiana, vol. 86, pp. 302-305.
  • Kim, D, Jerjen, H, Mackey, D et al. 2015, 'A Hero's Dark Horse: Discovery of an Ultra-faint Milky Way Satellite in Pegasus', Astrophysical Journal Letters, vol. 804, no. 2, pp. 5pp.
  • Milone, A, Marino, A, Piotto, G et al. 2015, 'The Hubble Space Telescope UV Legacy Survey of galactic globular clusters - II. The seven stellar populations of NGC 7089 (M2)', Monthly Notices of the Royal Astronomical Society, vol. 447, no. 1, pp. 927-938.
  • Kim, D & Jerjen, H 2015, 'A Hero's little horse: Discovery of a dissolving star cluster in Pegasus', The Astrophysical Journal, vol. 799, no. 1, pp. 73/1-8.
  • Kim, D, Jerjen, H, Milone, A et al. 2015, 'Discovery of a faint outer halo Milky Way star cluster in the southern sky', The Astrophysical Journal, vol. 803, no. 2, pp. 63/1-9.
  • Roderick, T, Jerjen, H, Mackey, D et al. 2015, 'Stellar Substructures around the Hercules Dwarf Spheroidal Galaxy', The Astrophysical Journal, vol. 804, no. 2, pp. 1-12.
  • Marino, A, Milone, A, Karakas, A et al 2015, 'Iron and s-elements abundance variations in NGC 5286: Comparison with 'anomalous' globular clusters and Milky Way satellites', Monthly Notices of the Royal Astronomical Society, vol. 450, pp. 815-845.
  • Milone, A, Marino, A, Piotto, G et al 2015, 'THE HUBBLE SPACE TELESCOPE UV LEGACY SURVEY of GALACTIC GLOBULAR CLUSTERS. III. A QUINTUPLE STELLAR POPULATION in NGC 2808', Astrophysical Journal, The, vol. 808, no. 1, pp. 51-73
  • Muller, O, Jerjen, H & Binggeli, B 2015, 'New dwarf galaxy candidates in the Centaurus group', Astronomy and Astrophysics, vol. 583, pp. 79-87.
  • Young, T, Jerjen, H, Lopez-Sanchez, A et al. 2014, 'Deep near-infrared surface photometry and properties of Local Volume dwarf irregular galaxies', Monthly Notices of the Royal Astronomical Society, vol. 444, no. 4, pp. 3052-3077.
  • Rejkuba, M, Harris, W, Greggio, L et al 2014, 'TRACING THE OUTER HALO IN A GIANT ELLIPTICAL TO 25 R-eff', Astrophysical Journal Letters, vol. 791, no. 1, p. 6.
  • Nicholls, D, Dopita, M, Sutherland, R et al. 2014, 'Metal-poor dwarf galaxies in the sigrid galaxy sample. II. the electron temperature-abundance calibration and the parameters that affect it', The Astrophysical Journal, vol. 790, no. 1, pp. 75/ 1-17.
  • Marino, A, Milone, A, Yong, D et al. 2014, 'The halo plus cluster system of the Galactic globular cluster NGC 1851(a similar to...)', Monthly Notices of the Royal Astronomical Society, vol. 442, no. 4, pp. 3044-3064.
  • Pawlowski, M, Famaey, B, Jerjen, H et al. 2014, 'Co-orbiting satellite galaxy structures are still in conflict with the distribution of primordial dwarf galaxies', Monthly Notices of the Royal Astronomical Society, vol. 442, no. 3, pp. 2362-2380.
  • Nicholls, D, Jerjen, H, Dopita, M et al. 2014, 'Nebular metallicities in two isolated local void dwarf galaxies', The Astrophysical Journal, vol. 780, no. 1.
  • Wykes, S, Intema, H, Hardcastle, M et al. 2014, 'Filaments in the southern giant lobe of Centaurus A: Constraints on nature and origin from modelling and GMRT observations', Monthly Notices of the Royal Astronomical Society, vol. 442, no. 4, pp. 2867-2882.
  • Milone, A, Marino, A, Bedin, L et al. 2014, 'The M 4 Core Project with HST-II. Multiple stellar populations at the bottom of the main sequence', Monthly Notices of the Royal Astronomical Society, vol. 439, no. 2, pp. 1588-1595.
  • Nicholls, D, Dopita, M, Sutherland, R et al. 2014, 'Metal-poor dwarf galaxies in the sigrid galaxy sample. I. H II region observations and chemical abundances', The Astrophysical Journal, vol. 786, no. 2, pp. 786/1-21.
  • Pak, M, Rey, S, Lisker, T et al. 2014, 'The properties of early-type galaxies in the Ursa Major cluster', Monthly Notices of the Royal Astronomical Society, vol. 445, no. 1, pp. 630-647.
  • Kim, S, Rey, S, Jerjen, H et al 2014, 'The extended virgo cluster catalog', Astrophysical Journal Supplement Series, vol. 215, no. 2, pp. 22/1-29.
  • Marino, A, Milone, A, Przybilla, N et al. 2014, 'Helium enhanced stars and multiple populations along the horizontal branch of NGC 2808: Direct spectroscopic measurements', Monthly Notices of the Royal Astronomical Society, vol. 437, no. 2, pp. 1609-1627.
  • Milone, A, Marino, A, Dotter, A et al 2014, 'Global and nonglobal parameters of horizontal-branch morphology of globular clusters', Astrophysical Journal, The, vol. 785, 21 (17pp)
  • Lianou, S, Grebel, E, Da Costa, G et al. 2013, 'Population gradients and photometric metallicities in early- and transition-type dwarf galaxies: Clues from the Sculptor group', The Astrophysical Journal, vol. 550, p. 10.
  • Jerjen, H, Da Costa, G, Willman, B et al. 2013, 'Main-sequence star populations in the virgo overdensity region', The Astrophysical Journal, vol. 769, no. 1, p. 11.
  • Piotto, G, Milone, A, Marino, A et al. 2013, 'Multi-wavelength Hubble Space Telescope photometry of stellar populations in NGC 288', The Astrophysical Journal, vol. 775, no. 1, p. 7.
  • Young, T, Horiuchi, S, Green, J et al. 2013, 'High-sensitivity mapping of ammonia emission in the Trumpler 14/Car I photodissociation region', Monthly Notices of the Royal Astronomical Society, vol. 435, no. 4, pp. 3568-3574.
  • Pawlowski, M, Kroupa, P & Jerjen, H 2013, 'Dwarf galaxy planes: The discovery of symmetric structures in the local group', Monthly Notices of the Royal Astronomical Society, vol. 435, no. 3, pp. 1928-1957.
  • Lopez-Sanchez, A, Koribalski, B, van Eymeren, J et al. 2012, 'The intriguing H i gas in NGC 5253: an infall of a diffuse, low-metallicity H i cloud?', Monthly Notices of the Royal Astronomical Society, vol. 419, no. 2, pp. 1051-1069.
  • Jerjen, H 2012, 'Galaxies on Sub-Galactic Scales', Publications of the Astronomical Society of Australia, vol. 29, no. 4, pp. 383-394.
  • Crnojevic, D, Grebel, E, Ferguson, A et al 2012, 'How Unique Is the Local Group? A Comparison to the Nearby Centaurus A Group', Galactic Archaeology: Near-Field Cosmology and the Formation of the Milky Way, ed. W. Aoki, M. Ishigaki, T. Suda, T. Tsujimoto, N. Arimoto, Astronomical Society of the Pacific, San Francisco, pp. 321-322pp.
  • Jerjen, H 2012, 'Dwarf elliptical galaxies: United and divided', 3rd JENAM Symposium - Dwarf Galaxies: Keys to Galaxy Formation and Evolution, JENAM 2010, Kluwer Academic Publishers, Lisbon, pp. 133-149.
  • Jerjen, H, 2012, 'Galaxies on Sub-Galactic Scales', Publications of the Astronomical Society of Australia, vol. 29, no. 4, pp. 383-394
  • Kirby, E M, Koribalski, B, Jerjen, H, López-Sánchez, A R, 2012, 'The Local Volume H I Survey: galaxy kinematics', Monthly Notices of the Royal Astronomical Society, vol. 420, no. 4, pp. 2924--2943.
  • Kirby, E, Koribalski, B, Jerjen, H et al 2012, 'The Local Volume Hi Survey: Galaxy kinematics', Monthly Notices of the Royal Astronomical Society, vol. 420, no. 4, pp. 2924-2943.
  • Rejkuba, M, Da Costa, G, Jerjen, H et al 2011, 'Discovery of RR Lyrae Stars in the Sculptor Group Dwarf Galaxies', European Astronomical Society Publications Series, vol. 48, pp. 61-62.
  • Crnojevic, D, Grebel, E, Cole, A et al 2011, 'Dwarf Galaxies Beyond Our Doorstep: the Centaurus Group', European Astronomical Society Publications Series, vol. 48, pp. 51-57.
  • Crnojevic, D, Rejkuba, M, Grebel, E et al 2011, 'Luminous AGB Stars beyond the Local Group: Tracers of Intermediate-age Populations in the Cen A Group', Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants, ed. F. Kerschbaum, T. Lebzelter, and R.F. Wing. San Francisco, Astronomical Society of the Pacific, San Francisco, United States, pp. 2pp.
  • Fadely, R, Willman, B, Geha, M et al. 2011, 'Segue 3: An Old, Extremely Low Luminosity Star Cluster in the Milky Way's Halo', The Astronomical Journal, vol. 142, no. 3, pp. A88-12.
  • Jerjen, H 2011, 'A close look at the Centaurus A group of galaxies: II. Intermediate-age populations in early-type dwarfs', Astronomy & Astrophysics, vol. 530, pp. -.
  • Nicholls, DC, Dopita, M & Jerjen, H 2011, 'Metal Abundances in Small Isolated Gas Rich Dwarf Galaxies', A Universe of Dwarf Galaxies, ed. M. Koleva, Ph. Prugniel and I. Vauglin, European Astronomical Society Publication Series, unknown, pp. 153-154.
  • Nicholls, DC, Dopita, M, Jerjen, H & Meurer, G 2011, 'The Small Isolated Gas-rich Irregular Dwarf (SIGRID) Galaxy Sample: Description and First Results**', Astronomical Journal, vol. 142, no. 3, pp. A83-14pp.
  • de Swardt, B, Kraan-Korteweg, R & Jerjen, H 2010, 'Photometric properties of six Local Volume dwarf galaxies from deep near-infrared observations', Monthly Notices of the Royal Astronomical Society, vol. 407, no. 2, pp. 955-968.
  • Da Costa, G, Rejkuba, M, Jerjen, H et al. 2010, 'Ancient Stars Beyond the Local Group: RR Lyrae Variables and Blue Horizontal Branch Stars in Sculptor Group Dwarf Galaxies', The Astrophysical Journal, vol. 708, no. 2, pp. L121-L125.
  • Gurovich, S, Freeman, K, Jerjen, H et al. 2010, 'The slope of the baryonic tully-fisher relation', The Astronomical Journal, vol. 140, no. 3, pp. 663-676.
  • Jerjen, H 2010, 'Dwarf cosmology with the Stromlo missing satellites survey', Advances in Astronomy, vol. 2010, p. 9.
  • Kroupa, P, Famaey, B, de Boer, K et al. 2010, 'Local-Group tests of dark-matter concordance cosmology: Towards a new paradigm for structure formation', Astronomy and Astrophysics, vol. 523, no. A32, p. 22.
  • Kroupa, P, Famaey, B, de Boer, K et al. 2010, 'Local-Group tests of dark-matter concordance cosmology: Towards a new paradigm for structure formation', Astronomy and Astrophysics, vol. 523, no. A32, pp. 22pp.
  • Da Costa, G, Jerjen, H, Bouchard, A et al 2008, 'ESO540-032: a Transition-Type Dwarf in the Sculptor Group', Galaxies in the Local Universe, ed. B S Koribalski, H Jerjen, Springer Science + Business Media, Berlin Germany, pp. 123-126.
  • Koribalski, B & Jerjen, H, eds, 2008, Galaxies in the Local Volume, Springer Science + Business Media, Berlin Germany.
  • Jerjen, H 2008, 'The Stromlo Missing Satellites Survey', Galaxies in the Local Universe, ed. B S Koribalski, H Jerjen, Springer Science + Business Media, Berlin Germany, pp. 187-190.
  • Walsh, S, Jerjen, H & Willman, B 2008, 'Bootes II: A Retrospective', Galaxies in the Local Universe, ed. B S Koribalski, H Jerjen, Springer Science + Business Media, Berlin Germany, pp. 191-193.
  • Kirby, E, Jerjen, H, Ryder, S et al 2008, 'Deepest Near-IR Surface Photometry of Galaxies in the Local Sphere of Influence', Galaxies in the Local Universe, ed. B S Koribalski, H Jerjen, Springer Science + Business Media, Berlin, pp. 49-52.
  • Da Costa, G, Grebel, E, Jerjen, H et al. 2009, 'Scl-dE1 GC1: An Extended Globular Cluster in a Low-Luminosity Dwarf Elliptical Galaxy', The Astronomical Journal, vol. 137, no. 5, pp. 4361-4367.
  • Bouchard, A, Da Costa, G & Jerjen, H 2009, 'The Environmental Influence on the Evolution of Local Galaxies', The Astronomical Journal, vol. 137, no. 2, pp. 3038-3052.
  • Mieske, S & Jerjen, H 2009, 'Near-field Cosmology with the VLT', Science with the VLT in the ELT Era, Springer, Netherlands, pp. 199-203.
  • Metz, M, Kroupa, P, Theis, C et al. 2009, 'Did the Milky Way Dwarf Satellites Enter The Halo as a Group?', The Astrophysical Journal, vol. 697, no. 1, pp. 269-274.
  • Metz, M, Kroupa, P & Jerjen, H 2009, 'Discs of satellites: the new dwarf spheroidals', Monthly Notices of the Royal Astronomical Society, vol. 394, no. 4, pp. 2223-2228.
  • Walsh, S, Willman, B & Jerjen, H 2009, 'The Invisibles: A Detection Algorithm to Trace the Faintest Milky Way Satellites', The Astronomical Journal, vol. 137, no. 1, pp. 450-469.
  • Tucker, E, Jerjen, H, Ryder, S et al. 2008, 'Deep Near-Infrared Surface Photometry of 57 Galaxies in the Local Sphere of Influence', The Astronomical Journal, vol. 136, no. Nov, pp. 1866-1888.
  • Walsh, S, Willman, B, Sand, D et al. 2008, 'Bootes II ReBooted: An MMT/MegaCam Study of an Ultrafaint Milky Way Satellite', The Astrophysical Journal, vol. 688, no. 1, pp. 245-253.
  • Warren, B, Jerjen, H & Koribalski, B 2007, 'The Minimum Amount of Stars a Galaxy Will Form', The Astronomical Journal, vol. 134, no. 5, pp. 1849-1862.
  • Seigar, M, Graham, A & Jerjen, H 2007, 'Intracluster light and the extended stellar envelopes of cD galaxies: an analytical description', Monthly Notices of the Royal Astronomical Society, vol. 378, no. 4, pp. 1575-1588.
  • Corsini, E, Aguerri, J, Debattista, V et al. 2007, 'The Bar Pattern Speed of Dwarf Galaxy NGC 4431', The Astrophysical Journal, vol. 659, no. 2, pp. L21-L24.
  • Bouchard, A, Jerjen, H, Da Costa, G et al. 2007, 'Interstellar Medium Disruption in the Centaurus A Group', The Astronomical Journal, vol. 133, no. 1, pp. 261-269.
  • Saviane, I & Jerjen, H 2007, 'NGC 5011C: An Overlooked Dwarf Galaxy in the Centaurus A Group', The Astronomical Journal, vol. 133, no. 4, pp. 1756-1762.
  • Metz, M, Jerjen, H & Kroupa, P 2007, 'The spatial distribution of the Milky Way and Andromeda satellite galaxies', Monthly Notices of the Royal Astronomical Society, vol. 374, no. 3, pp. 1125-1145.
  • Walsh, S, Jerjen, H & Willman, B 2007, 'A Pair of Bootes: A New Milky Way Satellite', The Astrophysical Journal, vol. 662, no. 2, pp. L83-L86.
  • Dunn, L & Jerjen, H 2006, 'First results from SAPAC: toward a three-dimensional picture of the Fornax cluster core', The Astronomical Journal, vol. 132, pp. 1384-95.
  • Warren, B, Jerjen, H & Koribalski, B 2006, 'Stellar and Gas Properties of High H 1 Mass-to-Light Ratio Galaxies in the Local Universe', The Astronomical Journal, vol. 131, pp. 2056-2073.
  • Soria, R, Graham, A, Fabbiano, G et al. 2006, 'Accretion and nuclear activity of quiescent supermassive black holes. II. Optical study and interpretation', The Astrophysical Journal, vol. 640, pp. 143-155.
  • Beaulieu, S, Freeman, K, Carignan, C et al. 2006, 'H I Detection of Two Dwarf S0 Galaxies in Nearby Groups: ESO 384-016 and NGC 59', The Astronomical Journal, vol. 131, pp. 325-331.
  • Rejkuba, M, Da Costa, G, Jerjen, H et al. 2006, 'Dwarf elliptical galaxies in Centaurus A group: stellar populations in AM 1339-445 and AM 1343-452', Astronomy and Astrophysics, vol. 448, pp. 983-999.
  • Wong, O, Ryan-Weber, E, Garcia-Appadoo, D et al. 2006, 'The Northern HIPASS catalogue - data presentation, completeness and reliability measures', Monthly Notices of the Royal Astronomical Society, vol. 371, pp. 1855-1864.
  • Soria, R, Fabbiano, G, Graham, A et al. 2006, 'Accretion and Nuclear Activity of Quiescent Supermassive Black Holes. I. X-Ray Study', The Astrophysical Journal, vol. 640, pp. 126-142.
  • Jerjen, H 2005, 'The impact of accurate distances to dwarf elliptical galaxies on cosmology', in Helmut Jerjen, Bruno Binggeli (ed.), Near-field Cosmology with Dwarf Elliptical Galaxies, Cambridge University Press, Cambridge, UK, pp. 322-330.
  • Metz, M, Kroupa, P & Jerjen, H 2005, 'Anistropies of the satellite systems around the Milky Way and Andromeda', in Helmut Jerjen, Bruno Binggeli (ed.), Near-field Cosmology with Dwarf Elliptical Galaxies, Cambridge University Press, Cambridge, UK, pp. 259-260.
  • Rekola, R, Jerjen, H & Flynn, C 2005, 'Charting the neighbourhood', in Helmut Jerjen, Bruno Binggeli (ed.), Near-field Cosmology with Dwarf Elliptical Galaxies, Cambridge University Press, Cambridge, UK, pp. 376-377.
  • Rekjkuba, M, Jerjen, H, Da Costa, G et al 2005, 'Near IR imaging of Centaurus group dwarf elliptical galaxies', in Helmut Jerjen, Bruno Binggeli (ed.), Near-field Cosmology with Dwarf Elliptical Galaxies, Cambridge University Press, Cambridge, UK, pp. 49-51.
  • Rekola, R, Jerjen, H & Flynn, C 2005, 'New distances of unresolved dwarf elliptical galaxies in the vicinity of the Local Group', Astronomy and Astrophysics, vol. 437, pp. 823-835.
  • Bouchard, A, Da Costa, G, Jerjen, H et al 2005, 'Neutral hydrogen in early-type dwarf galaxies of the Sculptor Group', in Helmut Jerjen, Bruno Binggeli (ed.), Near-field Cosmology with Dwarf Elliptical Galaxies, Cambridge University Press, Cambridge, UK, pp. 255-256.
  • Dunn, L & Jerjen, H 2005, 'SAPAC: a SBF analysis pipeline for the astronomical community', in Helmut Jerjen, Bruno Binggeli (ed.), Near-field Cosmology with Dwarf Elliptical Galaxies, Cambridge University Press, Cambridge, UK, pp. 365-367.
  • Jerjen, H & Binggeli, B, eds, 2005, Near-field Cosmology with Dwarf Elliptical Galaxies, Cambridge University Press, Cambridge, UK.
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