Zobrazeno 1 - 10
of 111
pro vyhledávání: '"Ponomareva, Anastasia A"'
Autor:
Šiljeg, Barbara, Adams, Elizabeth A. K., Fraternali, Filippo, Hess, Kelley M., Oosterloo, Tom A., Marasco, Antonino, Adebahr, Björn, Dénes, Helga, Lucero, Danielle M., Piña, Pavel E. Mancera, Moss, Vanessa A., Ponomareva, Anastasia A., van der Hulst, J. M.
Context. Understanding the dwarf galaxy population in low density environments is crucial for testing the LCDM cosmological model. The increase in diversity towards low mass galaxies is seen as an increase in the scatter of scaling relations such as
Externí odkaz:
http://arxiv.org/abs/2409.18825
Autor:
Pan, Hengxing, Jarvis, Matt J., Zhu, Ming, Ma, Yin-Zhe, Santos, Mario G., Ponomareva, Anastasia A., Heywood, Ian, Jing, Yingjie, Xu, Chen, Liu, Ziming, Chandola, Yogesh, Jing, Yipeng
We present a deep HI survey at L-band conducted with the Five-hundred-meter Aperture Spherical radio Telescope (FAST) over the COSMOS field. This survey is strategically designed to overlap with the MIGHTEE COSMOS field, aiming to combine the sensiti
Externí odkaz:
http://arxiv.org/abs/2408.16597
Autor:
Sinigaglia, Francesco, Rodighiero, Giulia, Elson, Ed, Bianchetti, Alessandro, Vaccari, Mattia, Maddox, Natasha, Ponomareva, Anastasia A., Frank, Bradley S., Jarvis, Matt J., Catinella, Barbara, Cortese, Luca, Roychowdhury, Sambit, Baes, Maarten, Collier, Jordan D., Ilbert, Olivier, Khostovan, Ali A., Kurapati, Sushma, Pan, Hengxing, Prandoni, Isabella, Rajohnson, Sambatriniaina H. A., Salvato, Mara, Sekhar, Srikrishna, Sharma, Gauri
We present the first measurement of HI mass of star-forming galaxies in different large scale structure environments from a blind survey at $z\sim 0.37$. In particular, we carry out a spectral line stacking analysis considering $2875$ spectra of colo
Externí odkaz:
http://arxiv.org/abs/2403.00734
Autor:
Jarvis, Matt J., Heywood, Ian, Jewell, Sophie M., Deane, Roger P., Klöckner, H. -R., Ponomareva, Anastasia A., Maddox, Natasha, Baker, Andrew J., Bianchetti, Alessandro, Hess, Kelley M., Roberts, Hayley, Rodighiero, Giulia, Ruffa, Ilaria, Sinigaglia, Francesco, Varadaraj, R. G., Whittam, I. H., Adams, Elizabeth A. K., Baes, Maarten, Murphy, Eric J., Pan, Hengxing, Vaccari, Mattia
We present the discovery of the most distant OH megamaser to be observed in the main lines, using data from the MeerKAT International Giga-Hertz Tiered Extragalactic Exploration (MIGHTEE) survey. At a newly measured redshift of $z = 0.7092$, the syst
Externí odkaz:
http://arxiv.org/abs/2312.04345
Autor:
Rey, Martin P., Orkney, Matthew D. A., Read, Justin I., Das, Payel, Agertz, Oscar, Pontzen, Andrew, Ponomareva, Anastasia A., Kim, Stacy Y., McClymont, William
Low-mass dwarf galaxies are expected to reside within dark matter haloes that have a pristine, `cuspy' density profile within their stellar half-light radii. This is because they form too few stars to significantly drive dark matter heating through s
Externí odkaz:
http://arxiv.org/abs/2309.00041
Autor:
Ponomareva, Anastasia A., Jarvis, Matt J., Pan, Hengxing, Maddox, Natasha, Jones, Michael G., Frank, Bradley S., Rajohnson, Sambatriniaina H. A., Mulaudzi, Wanga, Meyer, Martin, Adams, Elizabeth A. K., Baes, Maarten, Hess, Kelley M., Kurapati, Sushma, Prandoni, Isabella, Sinigaglia, Francesco, Spekkens, Kristine, Tudorache, Madalina, Heywood, Ian, Collier, Jordan D., Sekhar, Srikrishna
We present the first measurement of the HI mass function (HIMF) using data from MeerKAT, based on 276 direct detections from the MIGHTEE Survey Early Science data covering a period of approximately a billion years ($0 \leq z \leq 0.084 $). This is th
Externí odkaz:
http://arxiv.org/abs/2304.13051
Autor:
Namumba, Brenda, Román, Javier, Barroso, Jesus Falcon, Knapen, Johan H., Roger, Ianjamasimanana, Naluminsa, Elizabeth, Jozsa, Gyula I. G., Korsaga, Marie, Maddox, Natasha, Frank, Brad, Sikhosana, Sinenhlanhla, Legodi, Samuel, Carignan, Claude, Ponomareva, Anastasia A., Jarrett, Tom, Lucero, Danielle, Smirnov, Oleg M., van der Hulst, Thijs, Pisano, D. J., Malek, kasia, Marchetti, Lucia, Vaccari, Mattia, Jarvis, Matt, Baes, Maarten, Meyer, Martin, Adams, Elizabeth A. K., Delhaize, Jacinta, Chen, Hao, Rajohnson, Sambatriniaina, Kurapati, Sushma, Heywood, Ian, Verdes-Montenegro, Lourdes
The transformation and evolution of a galaxy is strongly influenced by interactions with its environment. Neutral hydrogen (\HI) is an excellent way to trace these interactions. Here, we present \HI\ observations of the spiral galaxy NGC~895, which w
Externí odkaz:
http://arxiv.org/abs/2303.09371
Autor:
Pan, Hengxing, Jarvis, Matt J., Santos, Mario G., Maddox, Natasha, Frank, Bradley S., Ponomareva, Anastasia A., Prandoni, Isabella, Kurapati, Sushma, Baes, Maarten, Piña, Pavel E. Mancera, Rodighiero, Giulia, Meyer, Martin J., Davé, Romeel, Sharma, Gauri, Rajohnson, Sambatriniaina H. A., Adams, Nathan J., Bowler, Rebecca A. A., Sinigaglia, Francesco, van der Hulst, Thijs, Hatfield, Peter W., Sekhar, Srikrishna, Collier, Jordan D.
We study the $M_{\rm HI}-M_{\star}$ relation over the last billion years using the MIGHTEE-HI sample. We first model the upper envelope of the $M_{\rm HI}-M_{\star}$ relation with a Bayesian technique applied to a total number of 249 HI-selected gala
Externí odkaz:
http://arxiv.org/abs/2210.04651
Autor:
Sinigaglia, Francesco, Rodighiero, Giulia, Elson, Ed, Vaccari, Mattia, Maddox, Natasha, Frank, Bradley S., Jarvis, Matt J., Oosterloo, Tom, Davé, Romeel, Salvato, Mara, Baes, Maarten, Bellstedt, Sabine, Bisigello, Laura, Collier, Jordan D., Cook, Robin H. W., Davies, Luke J. M., Delhaize, Jacinta, Driver, Simon P., Foster, Caroline, Kurapati, Sushma, Lagos, Claudia del P., Lidman, Christopher, Piña, Pavel E. Mancera, Meyer, Martin J., Mogotsi, K. Moses, Pan, Hengxing, Ponomareva, Anastasia A., Prandoni, Isabella, Rajohnson, Sambatriniaina H. A., Robotham, Aaron S. G., Santos, Mario G., Sekhar, Srikrishna, Spekkens, Kristine, Thorne, Jessica E., van der Hulst, Jan M., Wong, O. Ivy
We present the first measurements of HI galaxy scaling relations from a blind survey at $z>0.15$. We perform spectral stacking of 9023 spectra of star-forming galaxies undetected in HI at $0.23
Externí odkaz:
http://arxiv.org/abs/2208.01121
Autor:
Rajohnson, Sambatriniaina H. A., Frank, Bradley S., Ponomareva, Anastasia A., Maddox, Natasha, Kraan-Korteweg, Renée C., Jarvis, Matt J., Adams, Elizabeth A. K., Oosterloo, Tom, Baes, Maarten, Spekkens, Kristine, Adams, Nathan J., Glowacki, Marcin, Kurapati, Sushma, Prandoni, Isabella, Heywood, Ian, Collier, Jordan D., Sekhar, Srikrishna, Taylor, Russ
We present the observed HI size-mass relation of $204$ galaxies from the MIGHTEE Survey Early Science data. The high sensitivity of MeerKAT allows us to detect galaxies spanning more than 4 orders of magnitude in HI mass, ranging from dwarf galaxies
Externí odkaz:
http://arxiv.org/abs/2203.06149