#Astrophysicist interested in the binary stars, especially symbiotics. Currently a postdoc at IAC Tenerife 🇮🇨🇪🇸. Proud father & husband.
Czech Republic
Joined April 2009
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Dr. Jaroslav Merc retweeted
So long and thanks for all the fish! I just observed my last star this morning... #GaiaDPAC and @esa Gaia teams will do their best to make some great data releases from all the data I gathered! #GaiaDR4 in 2026, #GaiaDR5 around the end of the decade. Keep posted for our news items today at 10:00 CET.
Dr. Jaroslav Merc retweeted
The skies above Paranal are at risk from a proposed industrial megaproject.
This would be located in the vicinity of ESO's Observatory. If constructed, it would irreparably impact astronomical observations.
Read more: eso.org/public/news/eso2501/
📷 ESO/P. Horálek
Dr. Jaroslav Merc retweeted
V404 Cyg, the prototypical black hole x-ray binary, is a triple!
caltech.edu/about/news/first…
Dr. Jaroslav Merc retweeted
💫Research led by the IAC reveals how binary stars change their stellar dance with age.
🛰️With data from @ESAGaia, #Kepler and #TESS by @NASAExoplanets
✍️Published in @AandA_journal and selected as @esa Gaia Image of the Week.
+Info⬇️
iac.es/en/outreach/news/stud…
Dr. Jaroslav Merc retweeted
💫Un estudio liderado por el IAC revela cómo las estrellas binarias cambian su danza estelar con la edad
🛰️Con datos de @ESAGaia, #Kepler y #TESS de @NASAExoplanets
✍️Publicado en @AandA_journal y seleccionado como Gaia Image of the Week de @esa
+Info⬇️
iac.es/es/divulgacion/notici…
Dr. Jaroslav Merc retweeted
Today, the #GaiaMission celebrates 10 years of science operations. Over the course of these years, Gaia scanned across 256 billion objects, taking over 3 trillion CCD measurements. Celebrate this milestone with us! Full story on Gaia's celebration: cosmos.esa.int/web/gaia/iow_…
Our paper led by @seismic_Paul featured as the ESA Gaia Image of the week!
cosmos.esa.int/web/gaia/iow_…
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Dr. Jaroslav Merc retweeted
Nova T Coronae Borealis will become a new star in out our night sky soon. Read more below about this generational cosmic event!
A Nova eruption will make a "new star" in our night sky soon! @MSUNatSci @michiganstateu asked our very own Dr. @Elias17Aydi who researches novae, about this cosmic event, what it means for astronomers, and how you can enjoy it! Read the full article here:
natsci.msu.edu/news/2024-04-…
Dr. Jaroslav Merc retweeted
We are thrilled to announce that the second SONG science workshop will be held on Tenerife @IAC_Astrofisica
September 18-20, 2024
meetings.iac.es/song24/
We wave the registration fee for the first forty participants and cover for the hotel for a number of junior researches.
Dr. Jaroslav Merc retweeted
Gaia spots Milky Way's most massive black hole of stellar origin! It's 33 solar masses, dormant, 2nd closest to Earth at ~2000 light years away, part of a wide binary with an old giant star, with estimated age of 11 Gyr: youtu.be/cU00B-6DeSQ #GaiaBH3 cosmos.esa.int/web/gaia/iow_…
Dr. Jaroslav Merc retweeted
Stay tuned for results from an intermediate Gaia Collaboration paper tomorrow Tuesday 16 April 2024! #GaiaDPAC is currently processing and validating the data that will be published in #GaiaDR4, which is not expected before the end of 2025. cosmos.esa.int/web/gaia
Dr. Jaroslav Merc retweeted
Quite a few recent (two today!) ATels on ASAS-SN discoveries or using ASAS-SN data:
astronomerstelegram.org/?rea…
astronomerstelegram.org/?rea…
astronomerstelegram.org/?rea…
#VariableUniverse
Dr. Jaroslav Merc retweeted
Special Session 41 at the #EAS2024Padova is dedicated to
#Diversity for the advancement of #science
We are thrilled to see your abstracts for talks and e-posters on this important topic that relates to all of us!
Webpage & abstracts (by March 4)
eas.unige.ch/EAS_meeting/ses…
Dr. Jaroslav Merc retweeted
Symposium 8 at the @EAS_meeting 2024 presents the first meeting, dedicated to #asteroseismology of #binaryStars!
We are thrilled to see your abstracts for talks and e-posters on the fusion of those two exciting topics!
Webpage & abstracts (by March 4)
eas.unige.ch/EAS_meeting/ses…
1) Our paper on short-term accretion induced variability of symbiotic binaries, observed by @NASA_TESS, has been accepted in Astronomy & Astrophysics! You can already find it on arXiv. In this thread, I highlight a few key information from our research.
arxiv.org/abs/2312.16126
6) Beyond the flickering, our work unveiled periodic signals in a few cases. The highlight? In Z And, the periodicity was previously attributed to the rotation of the magnetic white dwarf. We observed a significant change of approximately 80 seconds over a 25-year time span!
7) Finally, let me express gratitude to my collaborators on this project, @seismic_Paul, Savita Mathur, and Rafael García. Special thanks to @IAC_Astrofisica for hosting me as a part of their early-career visitor program, where the majority of this work took shape.
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