Zobrazeno 1 - 10
of 923
pro vyhledávání: '"Postma, J."'
Autor:
George, Koshy, Poggianti, B. M., Omizzolo, A., Vulcani, B., Côté, P., Postma, J., Smith, R., Jaffe, Y. L., Gullieuszik, M., Moretti, A., Subramaniam, A., Sreekumar, P., Ghosh, S. K., Tandon, S. N., Hutchings, J. B.
The assembly of galaxy clusters is understood to be a hierarchical process with a continuous accretion of galaxies over time, which increases the cluster size and mass. Late-type galaxies that fall into clusters can undergo ram-pressure stripping, fo
Externí odkaz:
http://arxiv.org/abs/2409.10586
Autor:
Boselli, A., Serra, P., de Gasperin, F., Vollmer, B., Amram, P., Edler, H. W., Fossati, M., Consolandi, G., Cote, P., Cuillandre, J. C., Ferrarese, L., Gwyn, S., Postma, J., Boquien, M., Braine, J., Combes, F., Gavazzi, G., Hensler, G., Miville-Deschenes, M. A., Murgia, M., Roediger, J., Roehlly, Y., Smith, R., Zhang, H. X., Zabel, N.
Publikováno v:
A&A 676, A92 (2023)
We present the first results of a 21 cm HI line pilot observation carried out with MeerKAT in preparation for the ViCTORIA project, an untargeted survey of the Virgo galaxy cluster. The extraordinary quality of the data in terms of sensitivity and an
Externí odkaz:
http://arxiv.org/abs/2306.12751
Autor:
R, Rakhi, Santhosh, Geethika, Joseph, Prajwel, George, Koshy, Subramanian, Smitha, Kavila, Indulekha, Postma, J., Duc, Pierre-Alain, Côté, Patrick, Cortese, Luca, Ghosh, S. K., Subramaniam, Annapurni, Tandon, Shyam, Hutchings, John, Wesley, P Samuel, Bharadwaj, Aditya, Niroula, Neeran
NGC 5291, an early-type galaxy surrounded by a giant HI ring, is believed to be formed from collision with another galaxy. Several star forming complexes and tidal dwarf galaxies are distributed along the collisional ring which are sites of star form
Externí odkaz:
http://arxiv.org/abs/2304.07244
Autor:
George, Koshy, Poggianti, B. M., Tomičić, Neven, Postma, J., Côté, P., Fritz, J., Ghosh, S. K., Gullieuszik, M., Hutchings, J. B., Moretti, A., Omizzolo, A., Radovich, M., Sreekumar, P., Subramaniam, A., Tandon, S. N., Vulcani, B.
Spiral galaxies undergo strong ram-pressure effects when they fall into the galaxy cluster potential. As a consequence, their gas is stripped to form extended tails within which star formation can happen, giving them the typical jellyfish appearance.
Externí odkaz:
http://arxiv.org/abs/2212.02423
Autor:
Rampazzo, R., Mazzei, P., Marino, A., Bianchi, L., Postma, J., Ragusa, R., Spavone, M., Iodice, E., Ciroi, S., Held, E. V.
We are investigating the SF in galaxies of the actively evolving Dorado group where signatures of interactions and merging events are revealed by optical and radio observations in both ETGs and LTGs. Our previous Ha+[NII] study, probing ~10 Myrs time
Externí odkaz:
http://arxiv.org/abs/2206.01578
Autor:
Ghosh, S. K., Tandon, S. N., Singh, S. K., Shelat, D. S., Tahlani, P., Singh, A. K., Srinivasan, T. P., Joseph, P., Devaraj, A., George, K., Mohan, R., Postma, J., Stalin, C. S.
We describe a versatile pipeline for processing the data collected by the Ultra-Violet Imaging Telescope (UVIT) on board Indian Multi-wavelength astronomical satellite AstroSat.The UVIT instrument carries out simultaneous astronomical imaging through
Externí odkaz:
http://arxiv.org/abs/2203.07693
Autor:
Boselli, A., Fossati, M., Longobardi, A., Kianfar, K., Dametto, N. Z., Amram, P., Anderson, J. P., Andreani, P., Boissier, S., Boquien, M., Buat, V., Consolandi, G., Cortese, L., Côté, P., Cuillandre, J. C., Ferrarese, L., Galbany, L., Gavazzi, G., Gwyn, S., Hensler, G., Hutchings, J., Peng, E. W., Postma, J., Roediger, J., Roehlly, Y., Serra, P., Trinchieri, G.
Publikováno v:
A&A 659, A46 (2022)
As part of the VESTIGE survey, a blind narrow-band Ha+[NII] imaging survey of the Virgo cluster carried out with MegaCam at the CFHT, we discovered 8 massive lenticular galaxies with prominent ionised gas emission features in their inner (few kpc) re
Externí odkaz:
http://arxiv.org/abs/2111.06635
We report the discovery of a bright, compact ultraviolet source at a projected separation of 1.1~kpc from the known active galactic nucleus (AGN) in Mrk~766 based on Astrosat/UVIT observations. We perform radial profile analysis and derive the UV flu
Externí odkaz:
http://arxiv.org/abs/2101.07537
Autor:
Ghosh, S. K., Joseph, P., Kumar, A., Postma, J., Stalin, C. S., Subramaniam, A., Tandon, S. N., Barve, I. V., Devaraj, A., George, K., Girish, V., Hutchings, J. B., Kamath, P. U., Kathiravan, S., Lancelot, J. P., Leahy, D., Mahesh, P. K., Mohan, R., Nagabhushana, S., Pati, A. K., Rao, N. Kameswara, Sankarasubramanian, K., Sreekumar, P., Sriram, S.
Over the last 5 years, UVIT has completed observations of more than 500 proposals with ~ 800 unique pointings. In addition, regular planned monitoring observations have been made and from their analysis various key parameters related to in orbit perf
Externí odkaz:
http://arxiv.org/abs/2012.13525
Autor:
Rampazzo, R., Mazzei, P., Marino, A., Bianchi, L., Ciroi, S., Held, E. V., Iodice, E., Postma, J., Ryan-Weber, E., Spavone, M., Uslenghi, M.
Dorado is a nearby (17.69 Mpc) strongly evolving galaxy group in the Southern Hemisphere. We are investigating the star formation in this group. This paper provides a FUV imaging of NGC 1533, IC 2038 and IC 2039, which form a substructure, south west
Externí odkaz:
http://arxiv.org/abs/2012.10306