Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Michael Ramolla"'
Autor:
N. Niedworok, Klaus Fuhrmann, Michael Ramolla, Klaus W. Hodapp, F. Pozo Nuñez, L. Kaderhandt, Rolf Chini
Publikováno v:
Astronomische Nachrichten. 337:621-626
Gliese 29 is a 7 to 8 Gyr old, southern Population I turnoff star with a large proper motion of 1″/yr. Using recent direct imaging observations with the 0.8 m Infrared Imaging System (IRIS) of the Universitatssternwarte Bochum near Cerro Armazones
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30deb4cd66583e838af51571eea6e66f
https://doi.org/10.1002/asna.201512309
https://doi.org/10.1002/asna.201512309
Autor:
Wolfram Kollatschny, Rolf Chini, Michael Ramolla, Klaus W. Hodapp, M. Murphy, Martin Haas, D. Chelouche, Shai Kaspi, Julia Blex, Catalina Sobrino Figaredo
Publikováno v:
The Astronomical Journal. 159:259
We monitored the z=0.158 quasar 3C273 between 2015 and 2019 in the optical (BVrz) and near-infrared (JHK) with the aim to perform dust reverberation mapping. Accounting for host galaxy and accretion disk contributions, we obtained pure dust light cur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fe9d4a70f05b184b52f27c707e18177
https://doi.org/10.3847/1538-3881/ab89b1
https://doi.org/10.3847/1538-3881/ab89b1
Autor:
A. Barr Dominguez, M. Hackstein, Ch. Fein, Rolf Chini, K. Thomsch, L. Kaderhandt, F. Pozo Nuñez, Michael Ramolla, N. Niedworok, Martin Haas, Ch. Westhues
Publikováno v:
Astronomische Nachrichten. 336:590-603
This paper is the second in a series describing the southern Galactic Disk Survey (GDS) performed at the Univer-sitatssternwarte Bochum near Cerro Armazones in Chile. Haas et al. (2012, Paper I) presented the survey design and the characteristics of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e847f22681879ba02488373c301bdb71
https://doi.org/10.1002/asna.201512195
https://doi.org/10.1002/asna.201512195
Autor:
M. Murphy, Roland Lemke, Rolf Chini, C. Westhues, A. Barr Domínguez, Michael Ramolla, M. Haas, F. Pozo Nuñez, Holger Drass
Publikováno v:
Astronomische Nachrichten. 334:1115-1120
The new 40cm Bochum Monitoring Telescope (BMT) has started routine operation at the Universitatssternwarte Bochum (USB), located near Cerro Armazones in Chile. It has a 41′ × 27′ field of view (FoV) and is equipped with B and V broad band filter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef0d8315e403420bdc5b33d4f433c5a6
https://doi.org/10.1002/asna.201311912
https://doi.org/10.1002/asna.201311912
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 437:2303-2306
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b739a189b10f09961f9d0d37d0c8b18
https://doi.org/10.1093/mnras/stt2046
https://doi.org/10.1093/mnras/stt2046
Autor:
M. Murphy, Michael Ramolla, Klaus W. Hodapp, Rolf Chini, C. Westhues, Angie Barr Domínguez, Martin Haas, M. Hackstein, Roland Lemke
Publikováno v:
SPIE Proceedings.
Since 2007, the Ruhr-Universit¨at Bochum (RUB) in Germany and Universidad Cat´olica del Norte (UCN) in Chile jointly operate the Universit¨atssternwarte der Ruhr-Universit¨at Bochum (USB), which is located in direct neighborhood of the future E-E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76e778f2f9ad7386d9747c8591813d1e
https://doi.org/10.1117/12.2234018
https://doi.org/10.1117/12.2234018
Autor:
P. Romano, Enrico Bozzo, Rolf Chini, L. M. Oskinova, Michael Ramolla, R. Walter, Maurizio Falanga, Varun Bhalerao, Luigi Stella, Sergio Campana, Antonios Manousakis, Carlo Ferrigno, Sylvain Chaty, Pragati Pradhan, John A. Tomsick
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2016, 596, ⟨10.1051/0004-6361/201629311⟩
ResearcherID
Astronomy and Astrophysics-A&A, 2016, 596, ⟨10.1051/0004-6361/201629311⟩
ResearcherID
In this paper we report on a long multi-wavelength observational campaign of the supergiant fast X-ray transient prototype IGR J17544-2619. A 150 ks-long observation was carried out simultaneously with XMM-Newton and NuSTAR, catching the source in an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad6838e5d089400d1fc227a4dad65682
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/44679
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/44679
Publikováno v:
Astronomische Nachrichten. 333:706-716
We are monitoring a 6° wide stripe along the southern Galactic disk simultaneously in the r and i bands, using a robotic 15-cm twin telescope of the Universitatsternwarte Bochum near Cerro Armazones in Chile. Utilising the telescope's 2.7° field of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bf3de7406afa7f6e38144e8eab56451
https://doi.org/10.1002/asna.201211717
https://doi.org/10.1002/asna.201211717
Autor:
M. W. Ochmann, Shai Kaspi, Martin Haas, Michael Ramolla, Wolfram Kollatschny, N. Schartel, M. Zetzl, Dirk Grupe, Doron Chelouche
Publikováno v:
Astronomy & Astrophysics. 618:A83
A strong outburst in the X-ray continuum and a change of its Seyfert spectral type was detected in HE 1136-2304 in 2014. The spectral type changed from nearly Seyfert 2 type (1.95) to Seyfert 1.5 type in comparison to previous observations taken ten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d050a386b6f1098f3d130b148f350930
https://doi.org/10.1051/0004-6361/201732506
https://doi.org/10.1051/0004-6361/201732506
Autor:
Franz-Josef Hambsch, A. Barr Dominguez, L. Kaderhandt, Klaus W. Hodapp, Ch. Westhues, Ch. Fein, P. Ábrahám, Martin Haas, Ágnes Kóspál, Attila Moór, Rolf Chini, F. Pozo Nuñez, M. Hackstein, Michael Ramolla
We monitored the recent FUor 2MASS J06593158-0405277 (V960 Mon) since November 2009 at various observatories and multiple wavelengths. After the outburst by nearly 2.9 mag in $r$ around September 2014 the brightness gently fades until April 2015 by n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a77a27b20f564b2e24efb54a1c2d1acb
http://arxiv.org/abs/1510.06612
http://arxiv.org/abs/1510.06612