#hip41378 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #hip41378, aggregated by home.social.
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This is the spectroscopic transit of a #planet with an orbital period of 1.5 YEARS !! #HIP41378 🪐
In case you missed the great paper led by @sgrouffal (#ProudAdvisor), arXived over the summer, here is a recap'.
The planet HIP41378 f is a Saturn-sized transiting planet with an orbital period of 542 days. It means we can observe its transit only once every 1.5 years - it's actually once every 3 years from the ground as the host star is too close to the Sun (as seen from the Earth) every other transits.
With such a long orbital period and a nearly circular orbit, the transit event lasts 19 hours (!). Hence, from the ground, any observer could only observe a tiny fraction of the transit. To overcome this issue, back in 2022, we set up a worldwide collaboration of almost all high-resolution radial-velocity spectrographs across the globe. Over the same night, all the instruments observed the target HIP41378 at the time of planet'f transit, allowing us to detect the Rossiter-McLaughlin (RM) effect.
The RM effect is measuring the planet's orbital obliquity, i.e. the angle between the orbital plane and the spin axis of the star. While this angle is ~0º in the solar system, for HIP41378 it reaches Ψ=~52º.
[1/2]
#Science #Space #Exoplanet #Astrophysics #Astronomy #telescope
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This is the spectroscopic transit of a #planet with an orbital period of 1.5 YEARS !! #HIP41378 🪐
In case you missed the great paper led by @sgrouffal (#ProudAdvisor), arXived over the summer, here is a recap'.
The planet HIP41378 f is a Saturn-sized transiting planet with an orbital period of 542 days. It means we can observe its transit only once every 1.5 years - it's actually once every 3 years from the ground as the host star is too close to the Sun (as seen from the Earth) every other transits.
With such a long orbital period and a nearly circular orbit, the transit event lasts 19 hours (!). Hence, from the ground, any observer could only observe a tiny fraction of the transit. To overcome this issue, back in 2022, we set up a worldwide collaboration of almost all high-resolution radial-velocity spectrographs across the globe. Over the same night, all the instruments observed the target HIP41378 at the time of planet'f transit, allowing us to detect the Rossiter-McLaughlin (RM) effect.
The RM effect is measuring the planet's orbital obliquity, i.e. the angle between the orbital plane and the spin axis of the star. While this angle is ~0º in the solar system, for HIP41378 it reaches Ψ=~52º.
[1/2]
#Science #Space #Exoplanet #Astrophysics #Astronomy #telescope
-
This is the spectroscopic transit of a #planet with an orbital period of 1.5 YEARS !! #HIP41378 🪐
In case you missed the great paper led by @sgrouffal (#ProudAdvisor), arXived over the summer, here is a recap'.
The planet HIP41378 f is a Saturn-sized transiting planet with an orbital period of 542 days. It means we can observe its transit only once every 1.5 years - it's actually once every 3 years from the ground as the host star is too close to the Sun (as seen from the Earth) every other transits.
With such a long orbital period and a nearly circular orbit, the transit event lasts 19 hours (!). Hence, from the ground, any observer could only observe a tiny fraction of the transit. To overcome this issue, back in 2022, we set up a worldwide collaboration of almost all high-resolution radial-velocity spectrographs across the globe. Over the same night, all the instruments observed the target HIP41378 at the time of planet'f transit, allowing us to detect the Rossiter-McLaughlin (RM) effect.
The RM effect is measuring the planet's orbital obliquity, i.e. the angle between the orbital plane and the spin axis of the star. While this angle is ~0º in the solar system, for HIP41378 it reaches Ψ=~52º.
[1/2]
#Science #Space #Exoplanet #Astrophysics #Astronomy #telescope
-
This is the spectroscopic transit of a #planet with an orbital period of 1.5 YEARS !! #HIP41378 🪐
In case you missed the great paper led by @sgrouffal (#ProudAdvisor), arXived over the summer, here is a recap'.
The planet HIP41378 f is a Saturn-sized transiting planet with an orbital period of 542 days. It means we can observe its transit only once every 1.5 years - it's actually once every 3 years from the ground as the host star is too close to the Sun (as seen from the Earth) every other transits.
With such a long orbital period and a nearly circular orbit, the transit event lasts 19 hours (!). Hence, from the ground, any observer could only observe a tiny fraction of the transit. To overcome this issue, back in 2022, we set up a worldwide collaboration of almost all high-resolution radial-velocity spectrographs across the globe. Over the same night, all the instruments observed the target HIP41378 at the time of planet'f transit, allowing us to detect the Rossiter-McLaughlin (RM) effect.
The RM effect is measuring the planet's orbital obliquity, i.e. the angle between the orbital plane and the spin axis of the star. While this angle is ~0º in the solar system, for HIP41378 it reaches Ψ=~52º.
[1/2]
#Science #Space #Exoplanet #Astrophysics #Astronomy #telescope
-
This is the spectroscopic transit of a #planet with an orbital period of 1.5 YEARS !! #HIP41378 🪐
In case you missed the great paper led by @sgrouffal (#ProudAdvisor), arXived over the summer, here is a recap'.
The planet HIP41378 f is a Saturn-sized transiting planet with an orbital period of 542 days. It means we can observe its transit only once every 1.5 years - it's actually once every 3 years from the ground as the host star is too close to the Sun (as seen from the Earth) every other transits.
With such a long orbital period and a nearly circular orbit, the transit event lasts 19 hours (!). Hence, from the ground, any observer could only observe a tiny fraction of the transit. To overcome this issue, back in 2022, we set up a worldwide collaboration of almost all high-resolution radial-velocity spectrographs across the globe. Over the same night, all the instruments observed the target HIP41378 at the time of planet'f transit, allowing us to detect the Rossiter-McLaughlin (RM) effect.
The RM effect is measuring the planet's orbital obliquity, i.e. the angle between the orbital plane and the spin axis of the star. While this angle is ~0º in the solar system, for HIP41378 it reaches Ψ=~52º.
[1/2]
#Science #Space #Exoplanet #Astrophysics #Astronomy #telescope
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Out of the 13 spectrographs that participated in the worldwide campaign:
- 1 got clouds and did not observe
- 1 got a serious damage on the primary mirror and is off for a couple months
- 11 secured data✅✅✅✅✅✅✅✅✅✅✅❌❌
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Out of the 13 spectrographs that participated in the worldwide campaign:
- 1 got clouds and did not observe
- 1 got a serious damage on the primary mirror and is off for a couple months
- 11 secured data✅✅✅✅✅✅✅✅✅✅✅❌❌
-
Out of the 13 spectrographs that participated in the worldwide campaign:
- 1 got clouds and did not observe
- 1 got a serious damage on the primary mirror and is off for a couple months
- 11 secured data✅✅✅✅✅✅✅✅✅✅✅❌❌
-
Out of the 13 spectrographs that participated in the worldwide campaign:
- 1 got clouds and did not observe
- 1 got a serious damage on the primary mirror and is off for a couple months
- 11 secured data✅✅✅✅✅✅✅✅✅✅✅❌❌
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2 weeks ago, we were observing the rare transit of the #exoplanet #HIP41378 f. It was one of the largest ground-based observing campaign on an exoplanet so far.
Today, we did our first #zoom call with the PIs (Principle Investigators) of the spectroscopic data, in order to decide the strategy for data reduction, analysis and #publication. Another zoom is schedule later this week for the photometric campaign.
The data are so great that we believe we have room for 4+ #papers.
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2 weeks ago, we were observing the rare transit of the #exoplanet #HIP41378 f. It was one of the largest ground-based observing campaign on an exoplanet so far.
Today, we did our first #zoom call with the PIs (Principle Investigators) of the spectroscopic data, in order to decide the strategy for data reduction, analysis and #publication. Another zoom is schedule later this week for the photometric campaign.
The data are so great that we believe we have room for 4+ #papers.
-
2 weeks ago, we were observing the rare transit of the #exoplanet #HIP41378 f. It was one of the largest ground-based observing campaign on an exoplanet so far.
Today, we did our first #zoom call with the PIs (Principle Investigators) of the spectroscopic data, in order to decide the strategy for data reduction, analysis and #publication. Another zoom is schedule later this week for the photometric campaign.
The data are so great that we believe we have room for 4+ #papers.
-
2 weeks ago, we were observing the rare transit of the #exoplanet #HIP41378 f. It was one of the largest ground-based observing campaign on an exoplanet so far.
Today, we did our first #zoom call with the PIs (Principle Investigators) of the spectroscopic data, in order to decide the strategy for data reduction, analysis and #publication. Another zoom is schedule later this week for the photometric campaign.
The data are so great that we believe we have room for 4+ #papers.
-
If you want to get some news on the #HIP41378 system that I observed last weekend, you shall follow @sgrouffal.
She is doing a #PhD thesis with me on the #PLATO space mission from the European #Space agency #ESA. She is also working on the analysis of exquisite data of #HIP41378 taken with the very large telescope #VLT, in #Chile.
She is also the artist who produced this great #video of the system 🤩
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If you want to get some news on the #HIP41378 system that I observed last weekend, you shall follow @sgrouffal.
She is doing a #PhD thesis with me on the #PLATO space mission from the European #Space agency #ESA. She is also working on the analysis of exquisite data of #HIP41378 taken with the very large telescope #VLT, in #Chile.
She is also the artist who produced this great #video of the system 🤩
-
If you want to get some news on the #HIP41378 system that I observed last weekend, you shall follow @sgrouffal.
She is doing a #PhD thesis with me on the #PLATO space mission from the European #Space agency #ESA. She is also working on the analysis of exquisite data of #HIP41378 taken with the very large telescope #VLT, in #Chile.
She is also the artist who produced this great #video of the system 🤩
-
If you want to get some news on the #HIP41378 system that I observed last weekend, you shall follow @sgrouffal.
She is doing a #PhD thesis with me on the #PLATO space mission from the European #Space agency #ESA. She is also working on the analysis of exquisite data of #HIP41378 taken with the very large telescope #VLT, in #Chile.
She is also the artist who produced this great #video of the system 🤩
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Wow, this campaign on #HIP41378 f has been incredible ! I can tell you it's a great success. I am receiving many emails from colleagues across the #world reporting me they managed to observe the #transit. Now will start the long process of reducing / analysing / publishing the data.
Stay tuned.
I hope you enjoyed being informed about this campaign.
Next rendez-vous with #HIP41378 is planned for early January, with the transit of planet d that will be observed by #CHEOPS 🛰️ .
-
Wow, this campaign on #HIP41378 f has been incredible ! I can tell you it's a great success. I am receiving many emails from colleagues across the #world reporting me they managed to observe the #transit. Now will start the long process of reducing / analysing / publishing the data.
Stay tuned.
I hope you enjoyed being informed about this campaign.
Next rendez-vous with #HIP41378 is planned for early January, with the transit of planet d that will be observed by #CHEOPS 🛰️ .
-
Wow, this campaign on #HIP41378 f has been incredible ! I can tell you it's a great success. I am receiving many emails from colleagues across the #world reporting me they managed to observe the #transit. Now will start the long process of reducing / analysing / publishing the data.
Stay tuned.
I hope you enjoyed being informed about this campaign.
Next rendez-vous with #HIP41378 is planned for early January, with the transit of planet d that will be observed by #CHEOPS 🛰️ .
-
Wow, this campaign on #HIP41378 f has been incredible ! I can tell you it's a great success. I am receiving many emails from colleagues across the #world reporting me they managed to observe the #transit. Now will start the long process of reducing / analysing / publishing the data.
Stay tuned.
I hope you enjoyed being informed about this campaign.
Next rendez-vous with #HIP41378 is planned for early January, with the transit of planet d that will be observed by #CHEOPS 🛰️ .
-
Wow, this campaign on #HIP41378 f has been incredible ! I can tell you it's a great success. I am receiving many emails from colleagues across the #world reporting me they managed to observe the #transit. Now will start the long process of reducing / analysing / publishing the data.
Stay tuned.
I hope you enjoyed being informed about this campaign.
Next rendez-vous with #HIP41378 is planned for early January, with the transit of planet d that will be observed by #CHEOPS 🛰️ .
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@AlexSanterne Merci pour l'explication et la petite simulation. Je viens d'apprendre quelque chose 😁 est ce qu'un spectre de transmission d'#HIP41378 a été tenté durant le transit ?
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@AlexSanterne Merci pour l'explication et la petite simulation. Je viens d'apprendre quelque chose 😁 est ce qu'un spectre de transmission d'#HIP41378 a été tenté durant le transit ?
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@AlexSanterne Merci pour l'explication et la petite simulation. Je viens d'apprendre quelque chose 😁 est ce qu'un spectre de transmission d'#HIP41378 a été tenté durant le transit ?
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@AlexSanterne Merci pour l'explication et la petite simulation. Je viens d'apprendre quelque chose 😁 est ce qu'un spectre de transmission d'#HIP41378 a été tenté durant le transit ?
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The #Rossiter-#McLaughlin effect is also called the spectroscopic transit. Since the #star is rotating, one side is coming towards us and is blue-shifted while the other side is moving away from us and is red-shifted. As the planet is crossing the stellar disk, it blocks a part of the blue-, then red-shifted part. The Rossiter-McLaughlin is a radial velocity anomaly during transit.
GIF from my Phd student Salomé GROUFFAL (LAM / AMU / CNES / Institut origines).
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The #Rossiter-#McLaughlin effect is also called the spectroscopic transit. Since the #star is rotating, one side is coming towards us and is blue-shifted while the other side is moving away from us and is red-shifted. As the planet is crossing the stellar disk, it blocks a part of the blue-, then red-shifted part. The Rossiter-McLaughlin is a radial velocity anomaly during transit.
GIF from my Phd student Salomé GROUFFAL (LAM / AMU / CNES / Institut origines).
-
The #Rossiter-#McLaughlin effect is also called the spectroscopic transit. Since the #star is rotating, one side is coming towards us and is blue-shifted while the other side is moving away from us and is red-shifted. As the planet is crossing the stellar disk, it blocks a part of the blue-, then red-shifted part. The Rossiter-McLaughlin is a radial velocity anomaly during transit.
GIF from my Phd student Salomé GROUFFAL (LAM / AMU / CNES / Institut origines).
-
The #Rossiter-#McLaughlin effect is also called the spectroscopic transit. Since the #star is rotating, one side is coming towards us and is blue-shifted while the other side is moving away from us and is red-shifted. As the planet is crossing the stellar disk, it blocks a part of the blue-, then red-shifted part. The Rossiter-McLaughlin is a radial velocity anomaly during transit.
GIF from my Phd student Salomé GROUFFAL (LAM / AMU / CNES / Institut origines).
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Just woke up from a crazy #night observing #HIP41378 with so many instruments. Quick updated status (from what I just red):
- photometry: so far it seems only @hubble86 got a good weather during the expected ingress 🤞
- spectroscopy: data from #CARMENES / #CalarAlto, #HARPS-N / #TNG & #ESPRESSO / #ESO are in my mailbox. ✅No news yet from the US-based observatories (and India who haven't started observing yet).
We are still IN TRANSIT.
-
Just woke up from a crazy #night observing #HIP41378 with so many instruments. Quick updated status (from what I just red):
- photometry: so far it seems only @hubble86 got a good weather during the expected ingress 🤞
- spectroscopy: data from #CARMENES / #CalarAlto, #HARPS-N / #TNG & #ESPRESSO / #ESO are in my mailbox. ✅No news yet from the US-based observatories (and India who haven't started observing yet).
We are still IN TRANSIT.
-
Just woke up from a crazy #night observing #HIP41378 with so many instruments. Quick updated status (from what I just red):
- photometry: so far it seems only @hubble86 got a good weather during the expected ingress 🤞
- spectroscopy: data from #CARMENES / #CalarAlto, #HARPS-N / #TNG & #ESPRESSO / #ESO are in my mailbox. ✅No news yet from the US-based observatories (and India who haven't started observing yet).
We are still IN TRANSIT.