Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Seibert, Mark"'
Autor:
Sextl, Eva, Kudritzki, Rolf-Peter, Burkert, Andreas, Ho, I-Ting, Zahid, H. Jabran, Seibert, Mark, Battisti, Andrew J., Madore, Barry F., Rich, Jeffrey A.
We analyze TYPHOON long slit absorption line spectra of the starburst barred spiral galaxy NGC 1365 obtained with the Progressive Integral Step Method covering an area of 15 square kpc. Applying a population synthesis technique, we determine the spat
Externí odkaz:
http://arxiv.org/abs/2311.01140
Autor:
Chen, Qian-Hui, Grasha, Kathryn, Battisti, Andrew J., Kewley, Lisa J., Madore, Barry F., Seibert, Mark, Rich, Jeff A., Beaton, Rachael L.
Bars play an important role in mixing material in the inner regions of galaxies and stimulating radial migration. Previous observations have found evidence for the impact of a bar on metallicity gradients but the effect is still inconclusive. We use
Externí odkaz:
http://arxiv.org/abs/2212.10751
Autor:
Oakes, Elias K., Hoyt, Taylor J., Freedman, Wendy L., Madore, Barry F., Tran, Quang H., Cerny, William, Beaton, Rachael L., Seibert, Mark
Publikováno v:
ApJ, 929, 116 (2022)
We determine three independent Population II distance moduli to the Fornax dwarf spheroidal (dSph) galaxy, using wide-field, ground-based $VI$ imaging acquired with the Magellan-Baade telescope at Las Campanas Observatory. After subtracting foregroun
Externí odkaz:
http://arxiv.org/abs/2204.09699
Autor:
Driver, Simon P., Bellstedt, Sabine, Robotham, Aaron S. G., Baldry, Ivan K., Davies, Luke J., Liske, Jochen, Obreschkow, Danail, Taylor, Edward N., Wright, Angus H., Alpaslan, Mehmet, Bamford, Steven P., Bauer, Amanda E., Bland-Hawthorn, Joss, Bilicki, Maciej, Bravo, Matias, Brough, Sarah, Casura, Sarah, Cluver, Michelle E., Colless, Matthew, Conselice, Christopher J., Croom, Scott M., de Jong, Jelte, D'Eugenio, Franceso, De Propris, Roberto, Dogruel, Burak, Drinkwater, Michael J., Dvornik, Andrej, Farrow, Daniel J., Frenk, Carlos S., Giblin, Benjamin, Graham, Alister W., Grootes, Meiert W., Gunawardhana, Madusha L. P., Hashemizadeh, Abdolhosein, Haussler, Boris, Heymans, Catherine, Hildebrandt, Hendrik, Holwerda, Benne W., Hopkins, Andrew M., Jarrett, Tom H., Jones, D. Heath, Kelvin, Lee S., Koushan, Soheil, Kuijken, Konrad, Lara-Lopez, Maritza A., Lange, Rebecca, Lopez-Sanchez, Angel R., Loveday, Jon, Mahajan, Smriti, Meyer, Martin, Moffett, Amanda J., Napolitano, Nicola R., Norberg, Peder, Owers, Matt S., Radovich, Mario, Raouf, Mojtaba, Peacock, John A., Phillipps, Steven, Pimbblet, Kevin A., Popescu, Cristina, Said, Khaled, Sansom, Anne E., Seibert, Mark, Sutherland, Will J., Thorne, Jessica E., Tuffs, Richard J., Turner, Ryan, van der Wel, Arjen, van Kampen, Eelco, Wilkins, Steve M.
In Galaxy And Mass Assembly Data Release 4 (GAMA DR4), we make available our full spectroscopic redshift sample. This includes 248682 galaxy spectra, and, in combination with earlier surveys, results in 330542 redshifts across five sky regions coveri
Externí odkaz:
http://arxiv.org/abs/2203.08539
Autor:
Hoyt, Taylor J., Beaton, Rachael L., Freedman, Wendy L., Jang, In Sung, Lee, Myung Gyoon, Madore, Barry F., Monson, Andrew J., Neeley, Jillian R., Rich, Jeffery A., Seibert, Mark
The primary goal of the Carnegie Chicago Hubble Program (CCHP) is to calibrate the zero-point of the Type Ia supernova (SN Ia) Hubble Diagram through the use of Population II standard candles. So far, the CCHP has measured direct distances to 11 SNe
Externí odkaz:
http://arxiv.org/abs/2101.12232
Autor:
Hoadley, Keri, Martin, Christopher, Metzger, Brian D., Seibert, Mark, McWilliam, Andrew, Shen, Ken J., Neill, James D., Stefansson, Gudmundur, Monson, Andrew, Schaefer, Bradley E.
Stellar mergers are a brief-lived but common phase in the evolution of binary star systems. Among the many astrophysical implications of these events include the creation of atypical stars (e.g. magnetic stars, blue stragglers, rapid rotators), inter
Externí odkaz:
http://arxiv.org/abs/2011.09589
Autor:
Kourkchi, Ehsan, Tully, R. Brent, Eftekharzadeh, Sarah, Llop, Jordan, Courtois, Helene M., Guinet, Daniel, Dupuy, Alexandra, Neill, James D., Seibert, Mark, Andrews, Michael, Chuang, Juana, Danesh, Arash, Gonzalez, Randy, Holthaus, Alexandria, Mokelke, Amber, Schoen, Devin, Urasaki, Chase
Publikováno v:
2020, ApJ, 902:145
We present the distances of 9792 spiral galaxies lying within 15,000 km/s using the relation between luminosity and rotation rate of spiral galaxies. The sample is dominantly, but not exclusively, drawn from galaxies detected in the course of the ALF
Externí odkaz:
http://arxiv.org/abs/2009.00733
Autor:
Jang, In Sung, Hoyt, Taylor, Beaton, Rachael, Freedman, Wendy L., Madore, Barry F., Lee, Myung Gyoon, Neeley, Jillian R., Monson, Andrew J., Rich, Jeffrey A., Seibert, Mark
In the nearby galaxy NGC 4258, the well-modeled orbital motion of H$_2$O masers about its supermassive black hole provides the means to measure a precise geometric distance. As a result, NGC 4258 is one of a few "geometric anchors" available to calib
Externí odkaz:
http://arxiv.org/abs/2008.04181
Autor:
Kourkchi, Ehsan, Tully, R. Brent, Anand, Gagandeep S., Courtois, Helene M., Dupuy, Alexandra, Neill, James D., Rizzi, Luca, Seibert, Mark
Publikováno v:
2020, ApJ, 896, 3
This study is a part of the Cosmicflows-4 project with the aim of measuring the distances of more than ~10,000 spiral galaxies in the local universe up to ~15,000 km/s. New HI linewidth information has come primarily from the Arecibo Legacy Fast ALFA
Externí odkaz:
http://arxiv.org/abs/2004.14499
Autor:
Neeley, Jillian R., Marengo, Massimo, Freedman, Wendy L., Madore, Barry F., Beaton, Rachael L., Hatt, Dylan, Hoyt, Taylor, Monson, Andrew J., Rich, Jeffrey A., Sarajedini, Ata, Seibert, Mark, Scowcroft, Victoria
RR Lyrae stars have long been popular standard candles, but significant advances in methodology and technology have been made in recent years to increase their precision as distance indicators. We present multi-wavelength (optical $UBVR_cI_c$ and Gai
Externí odkaz:
http://arxiv.org/abs/1910.01773