Results 21 to 30 of about 67,078 (219)

Dwarf Galaxies with the Highest Concentration Are Not Thicker than Ordinary Dwarf Galaxies

The Astrophysical Journal, 2023
The formation mechanism of high-concentration dwarf galaxies is still a mystery. We perform a comparative study of the intrinsic shape of nearby low-mass galaxies with different stellar concentration.
Lijun Chen, Hong-Xin Zhang, Zesen Lin, Guangwen Chen, Bojun Tao, Zhixiong Liang, Zheyu Lin, Xu Kong   +7 more
doaj   +1 more source

Target Selection and Sample Characterization for the DESI LOW-Z Secondary Target Program

The Astrophysical Journal, 2023
We introduce the DESI LOW- Z Secondary Target Survey, which combines the wide-area capabilities of the Dark Energy Spectroscopic Instrument (DESI) with an efficient, low-redshift target selection method.
Elise Darragh-Ford, John F. Wu, Yao-Yuan Mao, Risa H. Wechsler, Marla Geha, Jaime E. Forero-Romero, ChangHoon Hahn, Nitya Kallivayalil, John Moustakas, Ethan O. Nadler, Marta Nowotka, J. E. G. Peek, Erik J. Tollerud, Benjamin Weiner, J. Aguilar, S. Ahlen, D. Brooks, A. P. Cooper, A. de la Macorra, A. Dey, K. Fanning, A. Font-Ribera, S. Gontcho A Gontcho, K. Honscheid, T. Kisner, Anthony Kremin, M. Landriau, Michael E. Levi, P. Martini, Aaron M. Meisner, R. Miquel, Adam D. Myers, Jundan Nie, N. Palanque-Delabrouille, W. J. Percival, F. Prada, D. Schlegel, M. Schubnell, Gregory Tarlé, M. Vargas-Magaña, Zhimin Zhou, H. Zou   +41 more
doaj   +1 more source

A Comparison of Outflow Properties in AGN Dwarfs versus Star-forming Dwarfs

The Astrophysical Journal, 2023
Feedback likely plays a crucial role in resolving discrepancies between observations and theoretical predictions of dwarf galaxy properties. Stellar feedback was once believed to be sufficient to explain these discrepancies, but it has thus far failed to
Archana Aravindan, Weizhe Liu, Gabriela Canalizo, Sylvain Veilleux, Thomas Bohn, Remington O. Sexton, David S. N. Rupke, Vivian U   +7 more
doaj   +1 more source

A Stellar Mass Threshold for Quenching of Field Galaxies

, 2012
We demonstrate that dwarf galaxies (10^7 < M_stellar < 10^9 Msun) with no active star formation are extremely rare (
Aihara, Balogh, Behroozi, Bell, Blanton, Blanton, Blanton, Blanton, Blanton, Blanton, Brown, Bryan, Gabor, Geha, Giovanelli, Grcevich, J. L. Tinker, Karachentseva, Kewley, Lisker, Ludlow, M. Geha, M. R. Blanton, Peng, Peng, R. Yan, Salim, Tinker, Walsh, Wang, Weisz, Willick, Woo, Wuyts, Yan, Yan, Yang, Zehavi   +37 more
core   +1 more source

The rotation curves shapes of late-type dwarf galaxies [PDF]

, 2008
We present rotation curves derived for a sample of 62 late-type dwarf galaxies that have been observed as part of the Westerbork HI Survey of Spiral and Irregular Galaxies (WHISP) project.
Begeman, Begum, Blais-Ouellette, Bosma, Bosma, Bottema, Broeils, Bullock, Casertano, Catinella, Corradi, Côté, de Blok, de Blok, de Blok, de Blok, Ford, García-Ruiz, Garrido, Hunter, J. M. van der Hulst, Kent, Kent, Kregel, Kuzio de Naray, Marchesini, McGaugh, Navarro, Navarro, Noordermeer, Persic, Persic, Power, Puche, R. A. Swaters, R. Sancisi, Rhee, Rubin, Sancisi, Sicotte, Sicotte, Simon, Spekkens, Spekkens, Swaters, Swaters, Swaters, Swaters, Swaters, Swaters, Swaters, T. S. van Albada, Tully, van den Bosch, van den Bosch, Verheijen   +55 more
core   +2 more sources

The Dwarf Galaxy Population of the Dorado group down to Mv=-11 [PDF]

, 2000
We present V and I CCD photometry of suspected low-surface brightness dwarf galaxies detected in a survey covering ~2.4 deg^2 around the central region of the Dorado group of galaxies.
Binggeli B., Binggeli B., Cláudia Mendes de Oliveira, de Block W., Drinkwater M. J., Eleazar R. Carrasco, Infante L., Irwin M., Leopoldo Infante, Lorrimer S. J., Michael Bolte, Shakhbazian R. K.   +11 more
core   +2 more sources

Dwarf galaxies beyond our doorstep: the Centaurus A group [PDF]

, 2010
The study of dwarf galaxies in groups is a powerful tool for investigating galaxy evolution, chemical enrichment and environmental effects on these objects.
A. Koch, A.A. Cole, Bouchard, Cole, Crnojević, D. Crnojević, Dalcanton, Dohm-Palmer, Dotter, E.K. Grebel, G. Da Costa, Grebel, H. Jerjen, Jerjen, Karachentsev, Karachentsev, M. Rejkuba, Marigo, Mateo, McQuinn, Melbourne, Rejkuba, Sharina, Tolstoy, Weisz   +24 more
core   +3 more sources

HST UV Spectroscopy of the Dwarf Starburst Galaxy Pox 186

The Astrophysical Journal, 2023
Studying the galaxies responsible for reionization is often conducted through local reionization-era analogs; however, many of these local analogs are too massive to be representative of the low-mass star-forming galaxies that are thought to play a ...
Noah S. J. Rogers, Claudia M. Scarlata, Evan D. Skillman, Nathan R. Eggen, Anne E. Jaskot, Vihang Mehta, John M. Cannon   +6 more
doaj   +1 more source

Star formation histories of dwarf galaxies in the FIRE simulations: dependence on mass and Local Group environment [PDF]

, 2019
We study star formation histories (SFHs) of $\simeq500$ dwarf galaxies (stellar mass $M_\ast = 10^5 - 10^9\,M_\odot$) from FIRE-2 cosmological zoom-in simulations.
Boylan-Kolchin, Michael, Bullock, James S., Chan, T. K., El-Badry, Kareem, Faucher-Giguere, Claude-Andre, Feldmann, Robert, Fitts, Alex, Garrison-Kimmel, Shea, Graus, Andrew, Hayward, Christopher, Hopkins, Phillip F., Keres, Dusan, Samuel, Jenna, Sanderson, Robyn, Wetzel, Andrew, Wheeler, Coral   +15 more
core   +4 more sources

Environment Matters: Predicted Differences in the Stellar Mass–Halo Mass Relation and History of Star Formation for Dwarf Galaxies

The Astrophysical Journal
We are entering an era in which we will be able to detect and characterize hundreds of dwarf galaxies within the Local Volume. It is already known that a strong dichotomy exists in the gas content and star formation properties of field dwarf galaxies ...
Charlotte R. Christensen, Alyson M. Brooks, Ferah Munshi, Claire Riggs, Jordan Van Nest, Hollis Akins, Thomas R. Quinn, Lucas Chamberland   +7 more
doaj   +1 more source